Windslabs are widespread and continue to be reactive to human triggering given the right terrain feature. 3 size 1.5 slides were triggered at Balu Pass yesterday.
Feb 27 interface is down 80cm+ and continues to give sudden planar results in field tests. The layer consists of crusts on solar aspects and decomposing surface hoar in isolated locations.
Ripe cornices have been failing over the past several days resulting in some large slides. Avoid exposure to this overhead hazard.
This problem was most active in the Maligne and surrounding Jasper area where the average snow pack is shallow but is proving much less active in the Columbia Icefield area.
Uniform wind slab has formed on most lee alpine and tree line slopes and cross-loaded features.
The mid-pack facets remain weak, especially in thin or rocky areas. Avoid steep or unsupported terrain, and watch for signs of instability such as whumpfing and cracking.
Now that the sun is higher in the sky, buried suncrust becomes more of a problem. Presently there are several crusts buried on S and W aspects, all with 50-100 cm overlying them. Dig, look and test these layers before committing to any solar slopes.
Over the past seven days we're received 45 cm of light snow, so it won't take much wind to create small pockets of drifted windslabs in areas on the leeward side of ridge crests at higher elevations.
Over the past seven days we're received 45 cm of light snow, so it won't take much wind to create small pockets of drifted windslabs in areas on the leeward side of ridge crests at higher elevations.
Now that the sun is higher in the sky, buried suncrust becomes more of a problem. Presently there are several crusts buried on S and W aspects, all with 50-100 cm overlying them. Dig, look and test these layers before committing to any solar slopes.
A touchy storm slab sits on a crust in the lower alpine(below ~2500m) down to treeline. This slab is catching riders off guard and is easily triggered on convex rolls.
Windslabs are widespread in the upper alpine and continue to be reactive to human triggering given the right terrain feature. Ripe cornices have been failing over the past several days. Avoid exposure to this overhead hazard.
Feb 27 interface is down 80cm+ and continues to give sudden planar results in field tests. The layer consists of crusts on solar aspects and decomposing surface hoar in isolated locations.
This problem was most active in the Maligne and surrounding Jasper area where the average snow pack is shallow but is proving much less active in the Columbia Icefield area.
Uniform wind slab has formed on most lee alpine and tree line slopes and cross-loaded features.
Storm slabs are variable in distribution and thickness, but currently exist on many lee slopes. Use particular caution on steeper slopes, and consider the consequences of your terrain choices.
The mid-pack facets remain weak, especially in thin or rocky areas. Avoid steep or unsupported terrain, and watch for signs of instability such as whumpfing and cracking.
Now that the sun is higher in the sky, buried suncrust becomes more of a problem. Presently there are several crusts buried on S through E aspects, with 30-70 cm overlying them. This problem is most significant in the south Kootenay region.
30-50 cms of new snow over the last few days sits on buried wind slabs from last weeks storm.&nbsp; Although these windslabs are becoming more stubborn, if triggered they could step down to the deeper weak layers.
30-50 cms of new snow over the last few days sits on buried wind slabs from last weeks storm.  Although these windslabs are becoming more stubborn, if triggered they could step down to the deeper weak layers.
Now that the sun is higher in the sky, buried suncrust becomes more of a problem. Presently there are several crusts buried on S through E aspects, with 30-70 cm overlying them.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Convective flurries have created a 30cm storm slab. It is most reactive where it sits on a crust. This slab is catching riders off guard and is easily triggered on convex rolls. </span><span class="s_2823317B">When the sun comes out this afternoon this slab will be very reactive!</span><span class="s_AA239
Windslabs are widespread in the upper alpine and continue to be reactive to human triggering given the right terrain feature. Ripe cornices have been failing over the past several days. Avoid exposure to this overhead hazard.
This problem was most active in the Maligne and surrounding Jasper area where the average snow pack is shallow but is proving much less active in the Columbia Icefield area.
Uniform wind slab has formed on most lee alpine and tree line slopes and cross-loaded features.
The mid-pack facets remain weak, especially in thin or rocky areas. Avoid steep or unsupported terrain, and watch for signs of instability such as whumpfing and cracking.
Now that the sun is higher in the sky, buried suncrust becomes more of a problem. Presently there are several crusts buried on S through E aspects, with 30-70 cm overlying them. This problem is most significant in the south Kootenay region.
Cornices are large and fragile right now. Numerous have been triggered by explosives and skiiers in the last few days and have triggered slabs on the slopes below. Heads up as the sun destabilizes them further over the next few days.
Now that the sun is higher in the sky, buried suncrust becomes more of a problem. Presently there are several crusts buried on S through E aspects, with 30-70 cm overlying them.
Cornices are large and fragile right now. Numerous have been triggered by explosives and skiiers in the last few days and most have triggered slabs on the slopes below. Heads up as the sun destabilizes them further over the next few days.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Tests, and recent avalanches in the region, continue to show that a layer down 75 to 100 is </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/RB4%28WB%29%20dn%2075cm.JPG" target="_blank"><span class="s_9255B882">triggerable by light loads</span></a><span class="s_AA239A9B"> (that's you). If triggered this layer is</span><a href="https://www.facebook.com/ParksMountainSafety/videos/vb.145133538869977/957537630962893/?type=2&amp;theater" target="_blank"><span class="s_9255B882"> likely to propagate</span></a><span class="s_AA239A9B"> into large avalanches. This layer is of most concern on solar aspects.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">A 30-50cm deep storm slab has formed. It is expected to become increasingly reactive due to the strong solar. In addition, on solar aspects it overlies a sun crust which provides a sliding surface. On lee, N'ly slopes soft windslabs may exist. </span><span class="s_28233
Large cornices exist on many ridges. Rapid changes, from very cold overnight to being beat on by strong solar may cause them to fail. A falling cornice is likely to trigger deeper layers and cause large avalanches.
The mid-pack facets remain weak, especially in thin or rocky areas. Avoid steep or unsupported terrain, and watch for signs of instability such as whumpfing and cracking.
Now that the sun is higher in the sky, buried suncrust becomes more of a problem. Presently there are several crusts buried on S through E aspects, with 30-70 cm overlying them. This problem is most significant in the south Kootenay region.
Cornices are large and fragile right now. Numerous cornices have been triggered by explosives and skiers in the last few days stepping down into deeper layers on the slopes below. Heads up as the sun destabilizes them further over the next few days.
Now that the sun is higher in the sky, buried suncrust becomes more of a problem. Presently there are several crusts buried on S through E aspects, with 30-70 cm overlying them.
Cornices are large and fragile right now. Numerous have been triggered by explosives and skiiers in the last few days and most have triggered slabs on the slopes below. Heads up as the sun destabilizes them further over the next few days.
This problem was most active in the Maligne and surrounding Jasper area where the average snow pack is shallow but is proving much less active in the Columbia Icefield area.
Uniform wind slab has formed on most lee alpine and tree line slopes and cross-loaded features.
A 30-50cm deep storm slab has formed. It is expected to become increasingly reactive due to the strong solar. In addition, on solar aspects it overlies a sun crust which provides a sliding surface. On lee features, watch for touchy wind slabs.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Tests, and recent avalanches in the region, continue to show that a layer down 75 to 100 is </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/RB4%28WB%29%20dn%2075cm.JPG" target="_blank"><span class="s_9255B882">triggerable by light loads</span></a><span class="s_AA239A9B"> (that's you). If triggered this layer is</span><a href="https://www.facebook.com/ParksMountainSafety/videos/vb.145133538869977/957537630962893/?type=2&amp;theater" target="_blank"><span class="s_9255B882"> likely to propagate</span></a><span class="s_AA239A9B"> into large avalanches. This layer is of most concern on solar aspects.
Large cornices exist on many ridges. Rapid changes, from very cold overnight to being beat on by strong solar may cause them to fail. A falling cornice is likely to trigger deeper layers and cause large avalanches.
Clear skies and high solar input will cause natural avalanches on solar aspects Saturday. These can provide enough mass to trigger persistent and deep persistent weak layers (listed below) causing larger avalanches.
Avalanches on buried suncrusts with facets have been seen on solar aspects within the last few days. Presently there are several crusts buried on S through E aspects, with 40-100 cm overlying them.
Deeper facet layers remain weak, especially in thin or rocky areas. Avoid steep or unsupported terrain, and watch for signs of instability such as whumpfing and cracking.
This problem may still be a concern in the Whistler/Portal Creek area. It appears to be inactive in the Maligne and Icefields areas.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Uniform wind slab has formed on most lee alpine and tree line slopes and cross-loaded features.
Expect loose wet avalanches on solar aspects as the day heats up. These may trigger persistent slabs where buried crusts exist.
Now that the sun is higher in the sky, buried suncrust becomes more of a problem. Presently there are several crusts buried on S through E aspects, with 50-100 cm overlying them. We do not have many observations of this currently.
They are big and mean this time of the season, and as the day heats up they like to fall off. Even on their own they can have significant mass.
The potential to trigger fast moving sluffs will persist on shaded aspects for a day or two.
Occurrences of cornice failures triggering persistent weak layers are on the rise.  Daytime warming and solar radiation increase the sensitivity of this avalanche problem. Avoid slopes (and run-out zones) that are subject to overhead hazard.
Buried crusts are creating persistent instabilities on solar aspects.  Storm snow sits on a crust down 30-50cm. February crust is down 80-120cm and still has surface hoar crystals on top in some places. Locate and test these layers before committing.
Intense spring sun coupled with rising freezing levels can trigger loose wet avalanches with the potential to run far. This is a classic &quot;step-down&quot; scenario where a small releases could trigger storm slabs and buried persistent weak layers.
This problem may still be a concern in the Whistler/Portal Creek area. It appears to be inactive in the Maligne and Icefields areas.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
First indicators of this problem showing up. Easy enough to avoid but, larger slides, triggered in the deep weaknesses can easily become a significant issue for groups traveling in the valley bottoms or run outs.
A mild inversion Sunday with a chance of rain and a poor recovery into Monday could cause surface events. These could provide enough mass to trigger persistent and deep persistent weak layers (listed below) causing larger avalanches.
Avalanches on buried crusts with facets have been seen on solar aspects within the last few days. Presently there are several crusts buried with 40-100 cm overlying them.
Deeper facet layers remain weak, especially in thin or rocky areas. Avoid steep or unsupported terrain and be very conservative with large terrain features. A great deal of variability exists. Dig a lot of holes and use your probe to get information
Expect loose wet avalanches at low elevations and on solar aspects with inversion conditions and a poor overnight recovery into Monday with the chance of rain. Loose wet avalanches may trigger persistent slabs where buried crusts exist.
Now that the sun is higher in the sky, buried crusts becomes more of a problem. Presently there are several crusts buried on S through E and W aspects, with 50-100 cm overlying them. We do not have many observations of this currently.
There are large cornices at this point in the season. With warming expected do not expose yourself to this hazard or the avalanches they may trigger.
Ripe cornices are sporadically failing triggering persistent weak layers.  Freezing levels are forecast to rise to 2500m keeping cornices touchy today.  Avoid slopes below these overhead hazards.
Buried crusts and associated weak layers have created persistent instabilities on solar aspects.  Recent storm snow sits on top of crusts 30-50cm down.  Feb 27 interface down 80-120cm still producing sudden planar results.  Take the time to evaluate.
Avalanches on buried crusts with facets have been seen on solar aspects within the last few days. Presently there are several crusts buried with 40-100 cm overlying them.
Deep facet layers remain weak, especially in thin or rocky areas. Avoid steep or unsupported terrain and be very conservative with large terrain features. A great deal of variability exists.
This problem may still be a concern in the Whistler/Portal Creek area. It appears to be inactive in the Maligne and Icefields areas.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
First indicators of this problem showing up. Easy enough to avoid but, larger slides, triggered in the deep weaknesses can easily become a significant issue for groups traveling in the valley bottoms or run outs.
Now that the sun is higher in the sky, buried crusts becomes more of a problem. Presently there are several crusts buried on S through E and W aspects, with 50-100 cm overlying them. We do not have many observations of this currently.
There are large cornices at this point in the season. With warming expected, do not expose yourself to this hazard or the avalanches they may trigger.
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</style><p class="p_CC664AAA"><span class="s_2823317B">Southwest winds</span><span class="s_AA239A9B"> have picked up this morning </span><span class="s_2823317B">gusting to 51 kph</span><span class="s_AA239A9B">. This will be actively creating </span><span class="s_2823317B">windslab </span><span class="s_AA239A9B">with the 7cm of new snow and promoting </span><span class="s_2823317B">rapid cornice growth </span><span class="s_AA239A9B">which could trigger </span><span class="s_2823317B">natural cornice fall</span><span class="s_AA239A9B">. Avoid slopes below these overhead hazards
Buried crusts and associated weak layers have created persistent instabilities on solar aspects. Recent storm snow sits on top of crusts 30-50cm down. Feb 27 interface down 80-120cm still producing sudden planar results. Take the time to evaluate.
This problem is still a concern in the Whistler/Portal Creek area. This, along with most recent rain means this area will be in very poor shape for travel.&nbsp;
First indicators of this problem showing up. Easy enough to avoid but, larger slides, triggered in the deep weaknesses can quickly become a significant issue for groups traveling in the valley bottoms or run outs.
Avalanches on buried crusts with facets have been seen on solar aspects within the last few days. Presently there are several crusts buried with 40-100 cm overlying them.
Deep facet layers remain weak, especially in thin or rocky areas. Avoid steep or unsupported terrain and be very conservative with large terrain features. A great deal of variability exists.
Large cornices on lee aspects are very fragile. Pay attention to what is above you.
Several buried suncrusts exist in the upper pack on on S through E and W aspects. Pay attention to these crusts as they may be potential sliding layers.
Large cornices exist on lee aspects. Several cornice falls have been observed recently. Minimize your exposure&nbsp; to these hazards and the avalanches they may trigger.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Previous SW winds have created soft slabs</span><span class="s_2823317B"> </span><span class="s_AA239A9B">in the alpine</span><span class="s_2823317B"> </span><span class="s_AA239A9B">and promoted </span><span class="s_2823317B">rapid cornice growth. </span><span class="s_AA239A9B">Cornice failure has the potential to trigger deeper layers in the snowpack. Avoid spending time underneath these beasts &amp; give a wide berth on ridges.
Buried crusts and associated weak layers have created persistent instabilities on solar aspects. Recent storm snow sits on top of crusts 30-50cm down. Feb 27 interface down 80-120cm still producing sudden planar results. Take the time to evaluate.
This problem is still a concern in the Whistler/Portal Creek area. This, along with most recent rain means this area will be in very poor shape for travel.
First indicators of this problem showing up. Easy enough to avoid but, larger slides, triggered in the deep weaknesses can quickly become a significant issue for groups traveling in the valley bottoms or run outs.
With snowfall and wind in the forecast storm slabs may develop in the coming days. These will not likely bond well initially to the widespread crust that is currently on the surface.
Deep facet layers remain very weak, especially in thin or rocky areas. Avoid large open slopes, steep slopes (&gt;30 degrees) and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
Avalanches on buried crusts with facets have been seen on sun exposed slopes within the last few days. Presently there are several crusts buried with 40-100 cm overlying them.
Spring is cornice season - meaning that they are large, and warm temperatures make them weak. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail. If you need to travel under cornices - move quickly.
Several buried suncrusts exist in the upper pack on on S through E and W aspects. Dig down to look for and test these crusts before committing to any big slopes - we were surprised by a buried suncrust just last week.
Spring is cornice season - meaning that they are large, and warm temperatures make them weak. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail. If you need to travel under cornices - move quickly.
Buried crusts have created persistent instabilities on solar aspects. Recent storm snow sits on top of crusts 30-50cm down. The crust of most concern is the Feb 27 interface down 70-120cm, which is still producing sudden planar results.
The late March cornices are large. Keep an eye on them and avoid exposing your party to these looming overhead hazards.
Deep facet layers remain very weak, especially in thin or rocky areas. Avoid large open slopes, steep slopes (&gt;30 degrees) and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
Avalanches on buried crusts with facets have been seen on sun exposed slopes within the last few days. Presently there are several crusts buried with 40-100 cm overlying them.
Cornices are large, and warm temperatures make them weak. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below.&nbsp; If you need to travel under cornices - move quickly.
Several buried suncrusts exist in the upper pack on on S through E and W aspects. Dig down to look for and test these crusts before committing to any big slopes - we were surprised by a buried suncrust just last week.
Cornices are large, and warm temperatures make them weak. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices - move quickly.
This problem is still most concerning and most active in the Whistler/Portal Creek area.
First indicators of this problem showing up. Easy enough to avoid but, larger slides, triggered in the deep weaknesses can quickly become a significant issue for groups traveling in the valley bottoms or run outs.
The overnight snow has formed a storm slab at ridge-top and cross-loaded lee features. These pockets will likely be easy to &quot;pop&quot; out by the weight of a person.
Buried crusts have created persistent instabilities on solar aspects. The crust of most concern is the Feb 27 interface down 70-120cm, which is still producing sudden planar results.
Deep facet layers remain very weak, especially in thin or rocky areas. Avoid large open slopes, steep slopes (&gt;30 degrees) and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
Cornices are large, and warm temperatures make them weak. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below. If you need to travel under cornices - move quickly.
Several buried suncrusts exist in the upper pack on S, E and W aspects although we have not had a chance to look for them for over one week. Dig down to look for these yourself, as we were surprised by a buried suncrust just last week.
Cornices are large, and warm temperatures make them weak. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices - move quickly.
This problem has been most active in the Whistler/Portal Creek area but is widespread through the forecast region and when triggered, always goes big.
First indicators of this problem showing up. Easy enough to avoid but, larger slides, triggered in the deep weaknesses can quickly become a significant issue for groups traveling in the valley bottoms or run outs.
Daily doses of 10-15cm is building a deep storm slab. Combined with sustained SW winds, slabs will be deeper on lee and cross-loaded features. Yesterday storm slabs were easy to trigger on convexities and wind loaded features. Expect the same today.
A series of crusts on solar aspects, buried up to 1.2 m deep, remain a concern. Tests generally take a hard force but continue to produce sudden planar results. This suggests that smaller avalanches, or cornice failures, may trigger large avalanches.
This problem has been most active in the Whistler/Portal Creek area but is widespread through the forecast region. When triggered, it will be big with serious consequences. Warm and sunny conditions will increase this danger.
Some cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.
With winds tapering toward the end of Friday's storm windloaded pockets may be difficult to detect.
Windslabs will likely begin to develop with Sundays wind.
Deep facet layers remain very weak, especially in thin or rocky areas. Avoid large open slopes, steep slopes (&gt;30 degrees) and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
Cornices are large, and warm temperatures make them weak. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below. If you need to travel under cornices - move quickly.
Several buried suncrusts exist in the upper pack on S, E and W aspects although we have not had a chance to look for them for over one week. Dig down to look for these yourself, as we were surprised by a buried suncrust just last week.
Cornices are large, and warm temperatures make them weak. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices - move quickly.
A touchy storm slab exists, with 30-50cm over a crust. On lee and cross-loaded features it's up to 1m deep. Yesterday skiers easily to triggered several size 2's and one size 3. They occurred in predictable places; steep slopes with a convexity.
A series of crusts on solar aspects, buried up to 1.2 m deep, remain a concern. Tests generally take a hard force but continue to produce sudden planar results. This suggests that smaller avalanches, or cornice failures, may trigger large avalanches.
This problem has been most active in the Whistler/Portal Creek area but is widespread through the forecast region. When triggered, it will be big with serious consequences. Warm and sunny conditions will increase this danger.
Some cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.
Deep facet layers remain very weak, especially in thin or rocky areas. Avoid large open slopes, steep slopes (&gt;30 degrees) and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
Cornices are large, and warm temperatures make them weak. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below. If you need to travel under cornices - move quickly.
Several buried suncrusts exist in the upper pack on S, E and W aspects although we have not had a chance to look for them for over one week. Dig down to look for these yourself, as we were surprised by a buried suncrust just last week.
Cornices are large, and warm temperatures make them weak. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices - move quickly.
A touchy storm slab exists, with 30-50cm over a crust. On lee and cross-loaded features it's up to 1m deep. On Friday skiers easily triggered several size 2's and one size 3. They occurred in predictable places; steep slopes with a convexity.
A series of crusts on solar aspects, buried up to 1.2 m deep, remain a concern. Tests generally take a hard force but continue to produce sudden planar results. This suggests that smaller avalanches, or cornice failures, may trigger large avalanches.
Large cornices are an ongoing concern with warmer temperatures. Even small cornice failures can trigger large avalanches.
Deep facet layers remain very weak, especially in thin or rocky areas. Avoid large open slopes, steep slopes (&gt;30 degrees) and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
Cornices are large. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below. If you need to travel under cornices - move quickly.
This problem has been most active in the Whistler/Portal Creek area but is widespread through the forecast region. When triggered, it will be big with serious consequences. Warm and sunny conditions will increase this danger.
Some cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.
Several buried suncrusts exist in the upper pack on S, E and W aspects although we have not had a chance to look for them for over one week. Dig down to look for these yourself, as we were surprised by a buried suncrust just last week.
Cornices are large. Ensure you give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices - move quickly.
These will be largest, and most widespread, on S and W aspect lee slopes at Alpine and Treeline elevations. However, new snow may also overload small buried wind slabs that exist near ridges, lee to previous SW winds.
Expect natural Loose Dry avalanches from cliffy terrain lee to NE winds during the storm. Human triggered sluffing in more sheltered steep terrain will remain likely throughout the forecast period.
A touchy storm slab exists, with 30-50cm over a crust. On lee and cross-loaded features it's up to 1m deep. On Friday skiers easily triggered several size 2's and one size 3. They occurred in predictable places; steep slopes with a convexity.
A series of crusts on solar aspects, buried up to 1.2 m deep, remain a concern. Tests generally take a hard force but continue to produce sudden planar results. This suggests that smaller avalanches, or cornice failures, may trigger large avalanches.
Large cornices are an ongoing concern with warmer temperatures and the strong March sunshine. Even small cornice failures can trigger large avalanches.
This problem has been most active in the Whistler/Portal Creek area but is widespread through the forecast region. When triggered, it will be big with serious consequences. Warm and sunny conditions will increase this danger.
Some cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.
Several buried suncrusts exist in the upper pack on S, E and W aspects. These crust are variable by nature and are likely responsible for the slab activity in the area. Heating may make these slabs more sensitive later this week.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
Deep facet layers remain very weak, especially in thin or rocky areas. Avoid large open slopes, steep slopes (&gt;30 degrees) and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below. If you need to travel under cornices, move quickly and think twice if there is significant heating.
These will be widespread, but most prevalent on S and W aspect lee slopes at Alpine and Treeline elevations. Sensitivity will increase with slope angle, and especially if temperatures approach 0 degrees, and/or / during strong sun.
On Wednesday and Thursday, warming temperatures, and some sun, will persuade the mountains to shed their new load of snow. Natural Loose Wet avalanches will be likely out of steep terrain, and may run far/fast on a crust.
A series of crusts on solar aspects, buried up to 1.2 m deep, remain a concern. Tests generally take a hard force but continue to produce sudden planar results. This suggests that smaller avalanches, or cornice failures, may trigger large avalanches.
Large cornices are an ongoing concern with warmer temperatures and the strong March sunshine. Even small cornice failures can trigger large avalanches.
Deep facet layers remain very weak, especially in thin or rocky areas. Avoid large open slopes, steep slopes (&gt;30 degrees) and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
Daytime heating is expected to be intense for the next few days. Get an early start and be done your day early.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below. If you need to travel under cornices, move quickly and think twice if there is significant heating.
This problem is becoming more active. When triggered, it will be big with serious consequences. Warm and sunny conditions will increase this danger. Steep sun facing rocks, cornice failures, and loose avalanches from above are waking up this problem.
Increase occurrence of cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.
This activity has largely been seen out of fairly extreme terrain with solar heating over the weekend however it was very easy to push the new snow off of buried crusts as it was warming up today. Be careful with terrain traps like cliffs and gullies
Several buried suncrusts exist in the upper pack on S, E and W aspects. These crust are variable by nature and are likely responsible for the slab activity in the area. Heating may make these slabs more sensitive later this week.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
Temps were warm overnight and the weak surface crust will break down quickly. Snow on N-E aspects at higher elevations that previously remained dry will deteriorate with warm temps today. Travel early and be very cautious as the snow becomes moist.
The strong solar will weaken cornices, which are very large on many ridges. Cornice failures are likely triggers for deeply buried weak layers and can trigger large avalanches.
Intense solar and warm temps could wake up deeply buried weak layers. Recent tests on these crusts indicate that they will likely take a heavy trigger like a cornice fall or another avalanche, but if triggered very large avalanches are possible.
Deep facet layers remain very weak, especially in thin or rocky areas. Avoid large open slopes, steep slopes (&gt;30 degrees) and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
This problem is widespread, and expect slush style avalanches to be running in gullies, from cliffs and on steep slopes facing the sun.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below. If you need to travel under cornices, move quickly and think twice if there is significant heating.
Wet snow avalanches will be running in most steep gully features, near cliff bands and on steep slopes.
Several buried suncrusts exist in the upper snowpack, and slab avalanches can be expected on these crusts as the heat penetrates the snowpack over the next few days.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
This problem is becoming more active. When triggered, it will be big with serious consequences. Warm and sunny conditions will increase this danger. Steep sun facing rocks, cornice failures, and loose avalanches from above are waking up this problem.
Increase occurrence of cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.
ont-weight: bold;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">Temps were above zero overnight at all of our weather stations &amp; got up to </span><span class="s_2823317B">+8 at 1900m</span><span class="s_AA239A9B">! Without an overnight freeze the snowpack will lose its strength &amp; </span><span class="s_2823317B">very destructive avalanches are possible</span><span class="s_AA239A9B">. Travel early &amp; </span><span class="s_2823317B">be cautious as the snow becomes moist
t-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_2823317B">Solar and warm temps will weaken cornices</span><span class="s_AA239A9B">, which are very large on many ridges. Cornice failures are likely triggers for deeply buried weak layers.&nbsp; There has been a number of near misses recently where people have gotten too close to cornice edges.
Intense solar and warm temps could wake up deeply buried weak layers. Recent tests on these crusts indicate that they will likely take a heavy trigger like a cornice fall or another avalanche, but if triggered very large avalanches are possible.
Deep facet layers remain very weak, especially in thin or rocky areas. Avoid large open slopes, steep slopes (&gt;30 degrees) and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
This problem is widespread, and expect slush style avalanches to be running in gullies, from cliffs and on steep slopes facing the sun.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below. If you need to travel under cornices, move quickly and think twice if there is significant heating.
Wet snow avalanches will be running in most steep gully features, near cliff bands and on steep slopes.
Several buried suncrusts exist in the upper snowpack, and slab avalanches can be expected on these crusts as the heat penetrates the snowpack over the next few days.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
A surface crust will break down on low elevation and solar slopes by midday Friday, and everywhere else by Saturday. Watch for moist or wet snow surfaces - these mean Loose wet activity is likely. Avoid exposure to steep terrain above.
Wet slabs may occur in isolated areas. These are more likely on slopes catching lots of sun, but may release several hours after the peak warming or solar input.
This problem is becoming more active. When triggered, it will be big with serious consequences. Warm and sunny conditions will increase this danger. Steep sun facing rocks, cornice failures, and loose avalanches from above are on going.
Increase occurrence of cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.
This problem will increase with forecasted warm temps and intense solar radiation. The danger rating will rapidly increase particularly on thin snowpack zones and sun facing slopes. Loose avalanches can initiate larger avalanches below.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Above freezing overnight temps mean that the snowpack will destabilize quickly once the sun hits a slope. Be very conscious of the aspects you are exposed to; even if you are in the shade the start zone above you may be cooking in the sun.</span><span class="s_28233
Very warm temperatures and strong solar may weaken large cornices that exist along many ridges. Cornice failures are likely triggers for deeply buried weak layers and may trigger very large avalanches.
Intense solar and warm temps could wake up deeply buried weak layers. Recent tests on these crusts indicate that they will likely take a heavy trigger like a cornice fall or another avalanche, but if triggered very large avalanches are possible.
This could again be a problem below treeline as the freezing level will be only drop to around 2000 tonight or if the sun were to come out and break down the surface crusts.
The snow pack remains warm after the past couple of days. There are several buried suncrusts exist in the upper snowpack and it remains possible to trigger these layers once the surface crusts break down with any prolonged heating from the sun.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
Deep facet layers remain very weak &amp; stressed by the recent heat. Give it some time - continue to avoid large open slopes, steep slopes and be wary that you can trigger this problem from a long distance away - the slab is stiff and it propagates far.
If the sun comes out, the snow pack is warm and will rapidly deteriorate and expect slush style avalanches to be running in gullies, from cliffs and on steep slopes facing the sun or in below treeline terrain.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below. If you need to travel under cornices, move quickly and think twice if there is significant heating.
This problem is becoming more active. When triggered, it will be big with serious consequences. Warm and sunny conditions will increase this danger. Steep sun facing rocks, cornice failures, and loose avalanches from above are on going.
Increase occurrence of cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.
The problem will remain active over the weekend with freezing levels reaching 2,400m. The danger rating will increase particularly on thin snowpack zones if the sun comes out or rain occurs. Loose avalanches can initiate larger avalanches below.
A weak temperature inversion last night prevented the moist surface snow from refreezing. The upper snowpack will destabilize quickly with daytime warming. If the sun continues to shine today, southern aspects will be particularity vulnerable.
Very warm temperatures may weaken large cornices that exist along many ridges. Sagging cornices may have thinly-bridged cracks to windward which pose a serious hazard. Cornice failures can trigger deeply buried weak layers leading to large slides.
Warm temps could wake up deeply buried weak layers. Recent tests on these crusts indicate that they will likely take a heavy trigger like a cornice fall or another avalanche, but if triggered very large avalanches are possible.
Deep facet layers remain weak &amp; stressed by the recent heat and will take a bit of time to adjust.  This layer will be harder to trigger due to the recent activity, but be cautious in thin snowpack areas.
If the sun comes out, the snow pack is warm and will rapidly deteriorate and expect slush style avalanches to be running in gullies, from cliffs and on steep slopes facing the sun or in below treeline terrain.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger avalanches below. If you need to travel under cornices, move quickly and think twice if there is significant heating.
Less solar input expected Sunday, but watch around steep, rocky areas/gullies if the sun pokes out.
The snow pack remains warm after the past couple of days. There are several buried suncrusts exist in the upper snowpack and it remains possible to trigger these layers once the surface crusts break down with any prolonged heating from the sun.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
This problem is active. When triggered, it will be big with serious consequences. Warm and sunny conditions will increase this danger. Steep sun facing rocks, cornice failures, and loose avalanches from above are on going.
The problem will remain active over the weekend with freezing levels reaching 2,400m. The danger rating will increase particularly on thin snowpack zones. Loose avalanches can initiate larger avalanches below. 
Increase occurrence of cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.
Warm temps and 3mm of rain last night prevented the moist surface snow from refreezing. The upper snowpack will destabilize quickly with daytime warming. If the sun continues to shine today, southern aspects will be particularity vulnerable.
Very warm temperatures may weaken large cornices that exist along many ridges. Cornice size &amp; extent can is difficult to asses and should be done cautiously giving a wide margin.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Warm temps could wake up deeply buried weak layers. Recent tests on these crusts indicate that they will likely take a heavy trigger like a cornice fall or another avalanche, but if triggered very large avalanches are possible.
Deep facet layers remain weak &amp; stressed by the recent heat and will take a bit of time to adjust. This layer will be harder to trigger due to the recent activity, but be cautious in thin snowpack areas.
If the sun comes out, the snow pack is warm and will rapidly deteriorate and expect loose and wet avalanches to be running in gullies, from cliffs and on steep slopes facing the sun or in below treeline terrain.
Watch steep, rocky areas/gullies if the sun comes out.
The snow pack remains warm after the past couple of days. There are several buried sun crusts in the upper snowpack and it remains possible to trigger these layers once the surface crusts break down with any prolonged heating from the sun.
Sensitivity of these storms slabs will vary depending on the underlying bed surface.  Be especially cautious in areas where the new snow overlies a crust.
Watch for moist or wet surface snow - this means avalanche activity is more likely.
Warm overnight temps and forecasted light rain will increase the danger of this problem on Monday.  Shallow areas are likely trigger spots. Cornice falls could also act as a trigger. Consequences would be severe.
Be observant of overnight freezing temperatures relative to degree of surface freezing.
Increase occurrence of cornice failures are being noted. It can act as a large trigger initiating deep weaknesses plus their sheer mass, whether or not it initiates an avalanche, would be like being hit by a car.
Prolonged above 0 temps and 3mm of rain yesterday prevented the moist surface snow from refreezing. A treeline profile yesterday showed all temps were above zero &amp; this AM's rain could rapidly destabilize the already weak snowpack.&nbsp;
Very warm temperatures may weaken large cornices that exist along many ridges. New snow and moderate ridgetop winds will also add fresh growth. Cornice size &amp; extent can is difficult to asses and should be done cautiously giving a wide margin.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Warm temps could wake up deeply buried weak layers. Recent tests on these crusts indicate that they will likely take a heavy trigger like a cornice fall or another avalanche, but if triggered very large avalanches are possible.
Cooling temperatures will reduce the likelihood of triggering this problem. Shallow areas are likely trigger spots.
Cornice failures are becoming more frequent lately.  New snow and moderate West winds will increase size.
Deep facet layers remain weak especially in thin snowpack areas. This layer will be harder to trigger as temperatures cool and but be cautious in large steep terrain especially when temperatures increase during the later part of the day.
When the sun comes out and the surface crusts break down, the snow pack will rapidly deteriorate. Expect loose wet avalanches to run in gullies, from cliffs and on steep slopes facing the sun during the later parts of the day.
Watch for loose wet avalanches on steep slopes, gullies and rocky areas on solar aspects when the sun comes out, and on all aspects at lower elevations with daytime warming.
This is becoming less of an issue with the cooler temperatures, but several buried sun crusts exist in the upper snowpack and it remains possible to trigger these layers once the surface crusts break down during any prolonged heating from the sun.
Storms slabs will have formed overnight with the new snow and winds. Given the warm temp's, they will be stubborn to trigger, but be looking for them as you head onto the lee side of ridges.
Lower elevation tests show an isothermal snowpack. While temp's have dropped overnight, brief glimpses of a strong April sun can be enough to trigger loose avalanches. These loose slides have the potential to entrain a lot of mass and be destructive.
Step-down avalanche potential exists with the many crusts buried in the upper metre. Tests on these crusts indicate that it will likely take a heavy load to trigger them, like a cornice fall or another avalanche. Expect large avalanches if they move!
Cooling temperatures will reduce the likelihood of triggering this problem. Shallow areas are likely trigger spots.
New surface windslab developing with moderate to strong S-Swly winds. Look for these on northerly aspects at ridge top and open areas.
Cornice failures are becoming more frequent lately. New snow and moderate West winds will increase size.
Strong southerly winds continue to redistribute the new snow into lee features, especially in the high alpine where temp's are a little cooler. At higher elevations, these slabs will be touchier than lower down.
Step-down avalanche potential exists with the many crusts buried in the upper metre, especially on solar aspects. It will take a heavy load to trigger them, like a cornice fall or another avalanche. Expect large avalanches if they move!
Deep facet layers remain weak especially in thin snowpack areas. On Thursday be cautious in large steep terrain especially when temperatures increase during the later part of the day as skies clear&nbsp; and temperatures rise.&nbsp;
Freezing levels will spike to 3300 m on Thursday as the ridge of high pressure settles in.&nbsp; In the afternoon any steep slopes should be avoided when the crust on top of the snowpack melts. Start early and finish early!
We have seen numerous cornice failures in the past week during periods of warm temperatures, some of which have triggered large slabs on the slopes below. Minimize your time under these at this time of the year.
There are several buried sun crusts exist in the upper snowpack and it remains possible to trigger these layers once the surface crusts break down during any prolonged heating from the sun.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
Rising temperatures will increase the likelihood of triggering this problem. Shallow areas are likely trigger spots.
Large hanging cornices will weaken with rising temperatures. Use caution traveling below or near them.
The snowpack is generally warm and weak; we have yet to undergo a true melt-freeze cycle due to ongoing warm overnight temps. Strong solar and very warm temps are forecast and loose wet avalanches are expected.
A ~30cm deep storm slab has developed and sits on a crust. Sustained winds will have built deeper pockets on lee slopes and in cross-loaded areas. These are likely to exist in areas where skiers/boarders are searching for skiable snow.
Huge cornices along ridges will be weakened by the strong sun today and continued above freezing temps. A chunk of cornice tumbling down-slope is a concern in itself, but cornices failures also provide a heavy trigger and may trigger large avalanches
Deep facet layers remain weak especially in thin snowpack areas. Hot and sunny conditions on Friday preclude afternoon travel in steep areas.
In the afternoon any steep slopes should be avoided when the crust on top of the snowpack melts. Start early and finish early!
We have seen numerous cornice failures in the past week during periods of warm temperatures, some of which have triggered large slabs on the slopes below. Minimize your time under these at this time of the year.
The forecasted hot sunny weather on Friday will be a trigger for this problem on all aspects and elevations.
The freezing level is rising to 3500 m tomorrow.  We are expecting to see loose wet avalanches on most slopes.
Large hanging cornices will weaken with rising temperatures. Use caution traveling below or near them.
There are several buried sun crusts exist in the upper snowpack and it remains possible to trigger these layers once the surface crusts break down during any prolonged heating from the sun.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
We have yet to undergo a true melt-freeze cycle due to warm overnight temps and the snowpack is generally weak. It doesn't take long for the strong solar and very warm temps to break down the weak surface crust. Loose wet avalanches are expected.
A ~30cm deep storm slab has developed and sits on a crust. Sustained winds will have built deeper pockets on lee slopes and in cross-loaded areas. These are likely to exist in areas where skiers/boarders are searching for skiable snow.
Huge cornices along ridges will be weakened by the strong sun today and continued above freezing temps. A chunk of cornice tumbling down-slope is a concern in itself, but cornices failures also provide a heavy trigger and may trigger large avalanches
Cool temperatures over the weekend will reduce this problem but caution advised on slopes if hot sunny conditions are experienced.
Cornice failures is possible.  Avoid slopes with cornices overhead.
Deep facet layers remain weak especially in thin snowpack areas.
In the afternoon any steep slopes should be avoided when the crust on top of the snowpack melts. Expect this predominantly at lower elevations and on sun exposed slopes for the weekend. Start early and finish early!
Avoid steep slopes or gullies as the day heats up and the crust on top of the snowpack melts. Plan to finish early over the next few days.
There are several buried sun crusts exist in the upper snowpack and it remains possible to trigger these layers once the surface crusts break down during any prolonged heating from the sun.
Don't expose yourself to steep slopes on Saturday or Monday, unless there is a solid surface freeze.  If you're sinking in to boot top, it's past time to go home!
Glide cracks have been developing quickly on many slopes.  Avoid entering or travelling anywhere below these slopes.  Glide avalanche timing is difficult to predict. Glide avalanches are always large and destructive
We have yet to undergo a true melt-freeze cycle due to warm overnight temps and the snowpack is generally weak. It doesn't take long for the strong solar and very warm temps to break down the weak surface crust. Loose wet avalanches are expected.
Strong solar input and daytime warming have created a wet slab problem. These slabs can be triggered from loose point releases or they can fail seemingly unprompted in the form of a large glide release.
Huge cornices along ridges will be weakened by the strong sun today and continued above freezing temps. A chunk of cornice tumbling down-slope is a concern in itself, but cornices failures also provide a heavy trigger and may trigger large avalanches
Deep facet layers remain weak especially in thin snowpack areas.
In the afternoon any steep slopes should be avoided when the crust on top of the snowpack melts. Expect this predominantly at lower elevations and on sun exposed slopes on Sunday. Start early and finish early!
We have seen numerous cornice failures in the past week during periods of warm temperatures, some of which have triggered large slabs on the slopes below. Minimize your time under these at this time of the year.
Avoid steep slopes or gullies as the day heats up and the crust on top of the snowpack melts. Plan to finish early over the next few days.
There are several buried sun crusts exist in the upper snowpack and it remains possible to trigger these layers once the surface crusts break down during any prolonged heating from the sun.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
Assume this will continue to linger for the time being.
Cornice failures is possible. Avoid slopes with cornices overhead.
It doesn't take long for the strong solar and very warm temps to break down the weak surface crust. Loose wet avalanches are expected.
Strong solar input and daytime warming have created a wet slab problem. These slabs can be triggered from loose point releases or they can fail seemingly unprompted in the form of a large glide release.
Huge cornices along ridges will be weakened by the strong sun today and continued above freezing temps. A chunk of cornice tumbling down-slope is a concern in itself, but cornices failures also provide a heavy trigger and may trigger large avalanches
Will be an issue for the rest of the season, most typically on solar aspects.
Assume this will continue to linger for the time being.
Cornice failures is possible. Avoid slopes with cornices overhead.
Deep facet layers remain weak especially in thin snowpack areas and may be triggered during the hotter parts of the day.
Any steep slopes should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. We expect this to occur mostly at lower elevations and on sun exposed alpine slopes on Monday. Start early and finish early!
We have seen numerous cornice failures in the past week during periods of warm temperatures. Some of these have triggered large slabs on the slopes below. Minimize your time under cornices at this time of the year, especially later in the day.
Any steep slopes should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. We expect this to occur mostly at lower elevations and on sun exposed alpine slopes on Monday. Start early and finish early!
There are several buried sun crusts exist in the upper snowpack and it remains possible to trigger these layers once the surface crusts break down during any prolonged heating from the sun.
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
It doesn't take long for the strong solar and very warm temps to break down the weak surface crust. Loose wet avalanches are expected.  Be especially careful in terrain traps below treeline where even a small slide could bury or push you around.
Strong solar input and daytime warming have created a wet slab problem. These slabs can be triggered from loose point releases or they can fail seemingly unprompted in the form of a large glide release.  Avoid overhead exposure to glide cracks!
Cornices along ridges will be weakened by the strong sun and warm temps. Serac fall has also been observed recently. Pieces of cornice or ice tumbling down are concerns in their own right, but these can trigger larger avalanches once on the slope. 
These may occur naturally, and be triggered by humans, during daytime warming on Tuesday. Watch your exposure, especially during sunny breaks. They should become unlikely later in the week.
Keep these in mind during daytime warming, particularly on Tuesday.
Wet Slab avalanche timing is unpredictable. Although becoming unlikely late in the week, any Wet Slab avalanche will be large and destructive. Cracks in the slope (Glide cracks) are strong indicators of Wet Slab potential.
All avalanche terrain should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. We expect this to occur mostly at lower elevations and on sun exposed alpine slopes. Start early and finish early!
Deep facet layers remain weak especially in thin snowpack areas and may be triggered during the hotter parts of the day.
We have seen numerous cornice failures in the past week during periods of warm temperatures. Some of these have triggered large slabs on the slopes below. Minimize your time under cornices at this time of the year, especially later in the day.
Any steep slopes should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. We expect this to occur mostly at lower elevations and on sun exposed alpine slopes on Monday. Start early and finish early!
Cornices are large. Give them a wide berth on ridge crests, as they can pull back a long way when they fail and may trigger an avalanche below. If you need to travel under cornices, move quickly but think twice if there is significant heating.
It doesn't take long for the strong solar &amp; warm temps to break down the weak surface crust. Loose wet avalanches are expected. Be especially careful on S aspects &amp; in terrain traps below treeline where even small slides could bury or push you around
Strong solar input and daytime warming have created a wet slab problem. These slabs can be triggered from loose point releases or they can fail seemingly unprompted in the form of a large glide release. Avoid overhead exposure to glide cracks!
Cornices along ridges will be weakened by the sun &amp; warm temps. Serac fall from glaciers has also been observed recently. Pieces of cornice or ice crashing down are concerns in their own right but these can trigger larger avalanches once on the slope
All avalanche terrain should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. Cloud cover may reduce the likelihood of this on Wednesday.
Deep facet layers remain weak especially in thin snowpack areas and may be triggered during the hotter parts of the day.
Any steep slopes should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. We expect this to occur mostly at lower elevations and on sun exposed alpine slopes on Monday. Start early and finish early.
It doesn't take long for the strong solar &amp; warm temps to break down the weak surface crust. Loose wet avalanches are expected. Be especially careful on S aspects &amp; in terrain traps below treeline where even small slides could bury or push you around
Strong solar input and daytime warming have created a wet slab problem. These slabs can be triggered from loose point releases or they can fail seemingly unprompted in the form of a large glide release. Avoid overhead exposure to glide cracks!
Cornices along ridges will be weakened by the sun &amp; warm temps. Serac fall from glaciers has also been observed recently. Pieces of cornice or ice crashing down are concerns in their own right but these can trigger larger avalanches once on the slope
All avalanche terrain should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. Cloud cover may reduce the likelihood of this on Thursday.
Deep facet layers remain weak especially in thin snowpack areas and may be triggered during the hotter parts of the day.
Any steep slopes should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating.&nbsp; Crusts remained intact on Wednesday except at lower elevations. Start early and finish early.
During periods of sun on solar aspects during the heat of the day loose wet avalanches are possible. Minimize your exposure to these slopes. Sometimes loose wet avalanches entrain significant mass and are quite dangerous.
All avalanche terrain should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. Cloud cover may reduce the likelihood of this on Thursday.
Deep facet layers remain weak especially in thin snowpack areas and may be triggered during the hotter parts of the day.
Any steep slopes should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. Crusts remained intact on Thursday to 1600m. Start early and finish early.
Watch for a cycle of loose wet avalanches in the new snow. Size will be dependant on snowfall amount. On Friday this will mainly be on sunny slopes; heat on Saturday and Sunday may spread this problem to higher/shadier terrain.
These will be largest and most widely distributed in the Alpine. in the alpine, and will be especially sensitive when they first receive sun (Friday or Saturday).
Cornices are likely to start failing naturally again with high temperatures through the weekend. Make an extra effort to avoid any overhead exposure to cornices on Sunday.
A strong surface crust exists, and with good timing spring &quot;corn&quot; skiing can be had when the surface starts to break down. However, if the crust has completely broken down loose wet avalanches will be easy to trigger and can entrain significant mass.
All avalanche terrain should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. This is possible to TL Saturday but very likely into the ALP and on North aspects Sunday with strong heating expected
Deep facet layers remain weak especially in thin snowpack areas and may be triggered during the hotter parts of the day. Sunday expect these slabs to become active especially on high North aspects that have yet to be heated to the forecast temps.
Watch for cornices to become active Sunday through Monday as the freezing levels reach their highest point yet this spring.
All avalanche terrain should be avoided later in the day when the crust on top of the snowpack breaks down due to daytime heating. This is possible to TL Saturday but very likely into the ALP and on North aspects Sunday with strong heating expected
Watch for cornices to become active Sunday through Monday as the freezing levels reach their highest point yet this spring.
At ridgecrests and on lee features, pockets of windslab are hidden by 10-20cm of powder. These wind slabs may be triggered by skiers and snowboarders.
A crust buried up to 1m deep may become increasingly reactive over the weekend and be hard to predict. Test results show variability: in some areas it is unreactive and in others it may be triggered by light loads (you!) and produce large avalanches.
The concern is mainly for steep, shallow terrain where faceting is likely above the crust.&nbsp;
Forecast snow and wind might make a crust buried up to 1m deep more reactive and unpredictable. Test results show variability: in some areas it is unreactive and in others it may be triggered by light loads (you!) and produce large avalanches.
We are expecting up to 30cm of snow by Sunday. This will add to ~20cm of powder sitting on the surface. Expect sluffing and loose avalanches to be triggered when skiing steep slopes. The loose snow also hides tree wells; buddy up!
Pockets of windslab at ridgecrests and on lee features are buried under low density snow and may be hard to identify.
Weakening of the surface snow has allowed the wind to easily trigger these sluffs in the lee of alpine ridges in very steep terrain. Climbers and skiers that are pushing into terrain that could be affected by these events should keep them in mind.
Weakening of the surface snow has allowed the wind to easily trigger these sluffs in the lee of alpine ridges in very steep terrain. Climbers and skiers that are pushing into terrain that could be affected by these events should keep them in mind.
Open lee features have new and possibly very reactive windslabs. Avoid traveling through these features.
Moderate winds and significant snowfall should be creating sensitive storm slabs in the alpine and open areas at treeline.
20cm of storm snow so far with another 10cm expected by Sunday. This is in addition to the 20cm of soft snow on the old snow surface. Loose snow avalanches can be expected in steeper terrain.
Storm snow loading on top of the persistent slab/Nov crust could make this deep slab more reactive. Field tests so far show variability with areas that are unreactive and others where light loads may trigger slides on this layer.
There seems to be quite variable reports of wind slab development, from touchy around Lake Louise to smaller and more stubborn n the Sunshine area. Watch locally for their development.
New snow and wind will mean spindrift in the short term, especially for ice climbers in gullies.
Watch for fresh wind slabs from the new snow and SW winds.&nbsp; These may be reactive in the short term until the cold weather arrives.
New snow and wind will mean spindrift in the short term, especially for ice climbers in gullies.
Open lee slopes featuring new and possibly very reactive wind-slabs. Best to avoid traveling through these features.
Fresh windslab has formed with reports of cracking, whumphing and remote triggering possible in surface layers at and above treeline. Human triggering is occurring. Loose dry sluffing will also be an issue to contend with.
Newly formed storm slabs should be treated as susceptible to human triggering. Once triggered it may overload the Nov 13 crust layer resulting in large avalanches.
Upwards of 60cm of loose dry snow has fallen. Sluff management will be essential for safe travel. Watch for others above and below you. Sluffs may overload storm and windslabs given the right location.
This condition would be found mainly on open lee slopes or cross-loaded gullies. Avoid traveling through or underneath these features.
Hard to get a solid handle on this problem, but with 30 cm of new snow and a lot of NE wind today, wind slabs should be expected. Reverse loading creates challenges as things can be backwards, so make careful observations of how the snow is loaded.
30 cm of light, dry snow will be sluffing and creating much unpleasant spindrift for ice climbers.
Hard to get a solid handle on this problem, but with 30 cm of new snow and a lot of NE wind today, wind slabs should be expected. Reverse loading creates challenges as things can be backwards, so make careful observations of how the snow is loaded.
30 cm of light, dry snow will be sluffing and creating much unpleasant spindrift for ice climbers.
While natural avalanche activity is tapering off, human triggered avalanches are still likely. Our new storm slab sits on previous wind slabs, combined this avalanche problem has the potential to step down to the Nov 13 Crust. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Upwards of 80cm of loose dry snow has fallen. Sluff management will be essential for safe travel. Watch for others above and below you. Sluffs have the potential to push a rider into a tree well or other terrain trap.
This condition would be found mainly on open lee slopes or cross-loaded gullies. Avoid traveling through or underneath these features.
Surprisingly very little wind slab formation in the Lake Louise back country today. Areas to watch for are the immediate lee near ridge top.
30 cm of light, dry snow will be sluffing and creating much unpleasant spindrift for ice climbers. This problem will become less of a concern as the storm snow settles and the cold temperatures set in.
Surprisingly very little wind slab formation in the Lake Louise back country today. Areas to watch for are the immediate lee near ridge top.
30 cm of light, dry snow will be sluffing and creating much unpleasant spindrift for ice climbers. This problem will become less of a concern as the storm snow settles and the cold temperatures set in.
Human triggered avalanches are likely in the new storm slab, which also sit on previous wind slabs. Combined, these two slabs could step down to the Nov 13 Crust, triggering a persistent slab.&nbsp; </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Sluffs have the potential to push a rider into a tree well or other terrain traps. With the recent arrival of 80cm of loose dry snow, sluff management will be essential for safe travel. Watch for others above and below you.
Surprisingly very little wind slab formation. Areas to watch for are the immediate lee near ridge top.
Lots of loose storm snow available to release out of steep gully's and head walls. The slightest winds can trigger this problem.
This condition would be found mainly on open lee slopes or cross-loaded gullies. At lower elevations use caution on classic trouble spots like moraine features, and larger open slopes with convexities.&nbsp;
Surprisingly very little wind slab formation. Areas to watch for are the immediate lee near ridge top.
Lots of loose storm snow available to release out of steep gully's and head walls. The slightest winds can trigger this problem.
Variable gusting winds have created windslab in the alpine. Expect cornices and crossloaded features lower on slopes to be reactive aswell.&nbsp;  Stay observant&nbsp; and approach wind loaded areas carefully.
Found mainly on open lee slopes and cross-loaded gullies. At lower elevations use caution on classic trouble spots like moraine features and larger open slopes with convexities.
Cold temps promoting facetting of upper snow pack. Expect loose dry avalanches from steep terrain.
Buried windslabs may still be triggerable. Expect fresh windslab development as winds increase Friday into Saturday.
Dominant issue in the snowpack is the November 12 crust (down 30-70 cm). This crust is evident throughout the region and has started to become reactive on south aspects in the Lake Louise area.
Dominant issue in the snowpack is the November 12 crust (down 30-70 cm). This crust is evident throughout the region and has started to become reactive on south aspects in the Lake Louise area.
Variable gusting winds have created windslab at ridge top in exposed areas. Expect cornices and crossloaded features lower on slopes to be reactive aswell. Stay observant and approach wind loaded areas carefully.
Cold temps promoting facetting of upper snow pack. Expect loose dry avalanches from steep terrain.
Found mainly on open lee slopes and cross-loaded gullies. At lower elevations use caution on classic trouble spots like moraine features and larger open slopes with convexities.
The dominant issue in the snowpack is the November 12 crust (down 30-70 cm). This crust is evident throughout the region and has started to become reactive on south aspects.
The dominant issue in the snowpack is the November 12 crust (down 30-70 cm). This crust is evident throughout the region and has started to become reactive on south aspects.
Variable gusting winds have created hard wind slabs at ridge top, in exposed areas, and on all aspects. Expect cornices and cross-loaded features lower on slopes to be reactive. Stay observant and approach wind loaded areas carefully.
Cold temps promoting facetting of upper snow pack. Expect loose dry avalanches from steep terrain.
Found mainly on open lee slopes and cross-loaded gullies. At lower elevations use caution on classic trouble spots like moraine features and larger open slopes with convexities.
The dominant issue in the snowpack is the November 12 crust (down 30-70 cm). This crust is evident throughout the region and has started to become reactive especially on South aspects just above tree line.
The dominant issue in the snowpack is the November 12 crust (down 30-70 cm). This crust is evident throughout the region and has started to become reactive especially on South aspects just above tree line.
Moderate to strong winds have created hard windslabs in exposed areas at and above treeline, and on all aspects. Cornices, unsupported features and steep cross-loaded terrain should be avoided. Evaluate wind loaded terrain before committing to it.
Cold temps promoting facetting of upper snow pack. Expect loose dry avalanches from steep terrain.
The Nov crust is down 40-90cm and is beginning to facet out, and loose strength and cohesion. There has been recent activity on this layer and requires respect.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
The dominant issue in the snowpack is the November 12 crust (down 30-70 cm). This crust is evident throughout the region and has started to become reactive especially on South aspects just above tree line. Use caution with this developing  layer.
As the surface snow rots with the cold temperatures, natural and human triggered sluffs are becoming more likely and have the ability to run quite far in steep terrain. Climbers and skiers in confined features such as gullies should beware.
The dominant issue in the snowpack is the November 12 crust (down 30-70 cm). This crust is evident throughout the region and has started to become reactive especially on South aspects just above tree line. Use caution with this developing layer.
As the surface snow rots with the cold temperatures, natural and human triggered sluffs are becoming more likely and have the ability to run quite far in steep terrain. Climbers and skiers in confined features such as gullies should beware.
This problem began developing on Saturday afternoon, and will increase during Sunday with forecast strong winds.  There is plenty of low-density snow available for transport.
This will mainly be a problem on Sunday as wind moves low-density snow around.
Widespread wind slabs formed last week during the transition to arctic air.  The bond of these slabs continues to improve with field tests giving resistant results.  Steeper cross loaded and unsupported terrain features should be avoided.&nbsp;
Cold temps promoting facetting of upper snow pack. Expect loose dry avalanches from steep terrain.
The Nov crust is down 40-90cm and is beginning to facet out, and lose strength and cohesion. There has been recent activity on this layer and requires respect.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
As the surface snow rots with the cold temperatures, natural and human triggered sluffs are becoming more likely and have the ability to run quite far in steep terrain. Climbers and skiers in confined features such as gullies should be wary of this.
The November 12 crust (down 30-80 cm) is evident throughout the region and has been reactive especially on South aspects just above tree line. Use caution with this layer on large slopes.
As the surface snow rots with the cold temperatures, natural and human triggered sluffs are becoming more likely and have the ability to run quite far in steep terrain. Climbers and skiers in confined features such as gullies should be wary of this.
The November 12 crust (down 30-80 cm) is evident throughout the region and has been reactive especially on South aspects just above tree line. Use caution with this layer on large slopes.
Thin, fresh, soft windslab resides on top of hard slab formed when arctic air moved in. Depending on location the hard slab may be just at ridge top or extend further down slope.
The surface snow is faceting rapidly and becoming weak, resulting in large sluffs developing in steep and/or confined terrain. Be very wary of your exposure above and below, and remember to ski off fall line to manage any sluffs growing behind you.
The Nov 12 crust has weak snow all around it, and is a suspect and dangerous layer. Although it's reactivity seems to have abated during the current cold snap, we expect it to awaken again with additional load and warmer temperatures (one-day).
The surface snow is faceting rapidly and becoming weak, resulting in large sluffs developing in steep and/or confined terrain. Be very wary of your exposure above and below, and remember to ski off fall line to manage any sluffs growing behind you.
The Nov 12 crust has weak snow all around it, and is a suspect and dangerous layer. Although it's reactivity seems to have abated during the current cold snap, we expect it to awaken again with additional load and warmer temperatures (one-day).
Cold temps promoting facetting of upper snow pack. Expect loose dry avalanches from steep terrain.
The Nov crust is down 40-90cm and is beginning to facet out, lose strength and cohesion. There has been recent activity on this layer and requires respect.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
This problem is most widespread in the alpine, where new snow totals are highest; but has also been noted in steep ice climbing areas Below Treeline. Skiers, use caution in steep terrain; Climbers, use caution around gullies, and avoid during wind.
Pay attention for stiffer feeling snow beneath your skis near changes in the terrain.  During Thursdays weather event, expect to see this problem switch to South &amp; West facing slopes, and to increase rapidly in size.
Thin, stubborn windslabs on the surface hide the hard windslabs formed by the cold Arctic air moving in. The hard slabs are prevalent near ridge tops or further downslope in valleys that acted as a wind funnel for the cold air flow.
The surface snow is faceting rapidly and becoming weak, resulting in sluffs developing in steep and/or confined terrain. Be wary of your exposure above and below, and remember to ski off fall line to manage sluffs lurking behind you.
The Nov 12 crust has weak facets all around it and forecasters are monitoring closely. Although it's reactivity seems to have abated during the current cold snap, we expect it to awaken again with additional load and warmer temperatures.
The surface snow is faceting rapidly and becoming weak, resulting in large sluffs developing in steep and/or confined terrain. Be very wary of your exposure above and below, and remember to ski off fall line to manage any sluffs growing behind you.
The Nov 12 crust has weak snow all around it, and is a suspect and dangerous layer. Although it's reactivity seems to have abated during the current cold snap, we expect it to awaken again with additional load and warmer temperatures (one-day).
Cold temps promoting facetting of upper snow pack. Expect loose dry avalanches from steep terrain.
Report of a remotely triggered size 1.5 windslab and extensive scouring in the alpine. Intense ridgetop transport observed on field trip today in the Columbia Icefield area likely producing some new windslabs in the alpine.
The Nov crust is down 40-90cm and is beginning to facet out, lose strength and cohesion. There has been recent activity on this layer and requires respect.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Hard wind slabs are prevalent near ridge-crests or in alpine cross-loaded features. The biggest concern with these hard slabs would be cutting a small pocket and riding it over steep, unforgiving terrain.
Report of a remotely triggered size 1.5 windslab from Monday. Intense ridgetop transport and scouring from North winds observed on Tuesday's field trip in the Icefield area likely producing some new windslabs in the alpine.
Cold temps promoting facetting of upper snow pack causing it to loose internal cohesion. Expect loose dry avalanches from steep terrain.
The Nov crust is down 40-90cm and is beginning to facet out, lose strength and cohesion. There has been recent activity on this layer and requires respect. Consequences would be severe if triggered.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
The surface snow is faceting rapidly and becoming weak, resulting in sluffs developing in steep and/or confined terrain. Ice climbers should be prepared for sluffing and spindrift and be wary of their exposure from above and below.
The surface snow is faceting rapidly and becoming weak, resulting in sluffs developing in steep and/or confined terrain. Be very wary of your exposure above and below, and remember to ski off fall line to manage any sluffs growing behind you.
The Nov 12 crust has weak snow all around it, and is a suspect and dangerous layer. Although it's reactivity seems to have abated during the current cold snap, we expect it to awaken again with additional load and warmer temperatures (one-day).
Wind slabs are currently a problem in the Alpine in Western Areas, and on all snowy slopes in Eastern areas.&nbsp; Watch for this problem to move to S and W facing slopes if we see moderate NE winds Thursday-Friday.
Hard wind slabs are prevalent near ridge-crests or in alpine cross-loaded features. The biggest concern with these hard slabs would be cutting a small pocket and riding it over steep, unforgiving terrain.
Cold temperatures have facetted the surface snow. In sheltered steep terrain this light facetted snow has potential move quickly and knock a rider off their feet. Plan your run accordingly in steep, exposed spots or above terrain traps.
Cold temps have weakened the snow clinging to steep terrain, and as a result shedding and sluffing should be expected.
Although this layer has been dormant, it is still a concern and is widespread between 2100-2600m.
The surface snow is facetted and weak, resulting in large sluffs in steep terrain. Sluffs are picking up mass and running fairly far. Pay attention to terrain traps where snow can accumulate into deeper deposits.
Forecasted winds for Friday and Saturday may create fresh wind slabs.
The surface snow is facetted and weak, resulting in large sluffs in steep terrain. Sluffs are picking up mass and running fairly far. Pay attention to terrain traps where snow can accumulate into deeper deposits.
Forecasted winds for Friday and Saturday may create fresh wind slabs.
Fresh wind slabs are prevalent near ridge-crests or in alpine cross-loaded features and reactive where unsupported.&nbsp; The biggest concern with these would be cutting a small pocket and riding it over steep, unforgiving terrain.
Cold temperatures have facetted the surface snow. In sheltered steep terrain this light facetted snow has potential move quickly and knock a rider off their feet. Plan your run accordingly in steep, exposed spots or above terrain traps.
Cold temps have weakened the snow clinging to steep terrain, and as a result shedding and sluffing should be expected.
Although this layer has been dormant, it is still a concern and is widespread between 2100-2600m.
The surface snow is facetted and weak, resulting in large sluffs in steep terrain. Sluffs are picking up mass and running fairly far. Pay attention to terrain traps where snow can accumulate into deeper deposits.
Forecasted winds for Friday and Saturday may create fresh wind slabs.
Fresh wind slabs are prevalent near ridge-crests or in alpine cross-loaded features and reactive where unsupported. The biggest concern with these would be cutting a small pocket and riding it over steep, unforgiving terrain.
Cold temps have weakened the snow clinging to steep terrain, and as a result shedding and sluffing should be expected.
Although this layer has been dormant, it is still a concern and is widespread between 2100-2600m.
The surface snow is facetted and weak, resulting in large sluffs in steep terrain. Sluffs are picking up mass and running fairly far. Pay attention to terrain traps where snow can accumulate into deeper deposits.
Moderate to strong winds today have added to the wind slab in the alpine. The alpine snowpack is highly variable with wind affect ranging from impenetrable hard slab to loose faceted snow. Identifying this avalanche problem may be challenging.
The low density snow that has made for great skiing lately is being blown to many places. With Extreme winds, watch for Wind Slabs in unusual places. New snowfall on Monday will increase this problem. These may be hidden by more snowfall on Tuesday.
Freshly formed windslabs brought on by moderate S'ly winds and light snowfall should be watched for in the immediate lee of ridges and alpine terrain features.  These slabs will hide hard slabs formed during the arctic high pressure.
Snow clinging to the mountain sides continues to shed from the steep terrain and sluffing and entrainment should be expected.
It's windy. So, expect to find windslab developing in the immediate Lee of slopes and ridge tops.
Although this layer has been dormant, it is still a concern and is widespread between 2100-2600m.
The surface snow is facetted and weak allowing for wind triggered large sluffs in steep terrain. These sluffs are picking up mass and running far. Pay attention to terrain traps where snow can accumulate into deeper deposits.
Strong winds have added to the wind slab problem. By now the alpine snowpack is highly variable ranging from impenetrable hard slab to loose faceted snow. Probe often to determine the extent of the wind slabs and avoid them in steep terrain.
The surface snow is facetted and weak allowing for wind triggered large sluffs in steep terrain. These sluffs are picking up mass and running far. Pay attention to terrain traps where snow can accumulate into deeper deposits.
Strong winds have added to the wind slab problem. By now the alpine snowpack is highly variable ranging from impenetrable hard slab to loose faceted snow. Probe often to determine the extent of the wind slabs and avoid them in steep terrain.
30cm of storm snow is settling over a very weak old surface of facetted  snow. The surface slab will be sensitive to human and natural triggering especially in areas of wind effect as it overloads the weak layer.
Sunday afternoon we were already observing loose dry snow sluffing as the weak old snow surface was overloaded.  Add another 30cm overnight and these slides could entrain enough mass to be an issue for skiers and riders.
48 hours of intense ridgetop transport due to strong SW winds has created new windslabs, reactive to skier traffic. Numerous natural avalanches were observed from a variety of aspects, particularly alpine gulley features and planar NE slopes.
The depth of this crust is now highly variable, and may as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential with this new loading pattern.
Although there has been extensive scouring, the weak facets will likely continue to shed from steep rocky terrain.
New snow and strong winds have created a reactive wind slab on exposed slopes in the alpine and tree line. This new slab sits over a very faceted snowpack creating a weak interface. Natural and skier trigger avalanches to size 2 were reported today.
Combinations of new snow and loose facets are contributing to this problem, expect sluffing out of steep alpine slopes and gullies. These sluffs are picking up mass and running far.
New snow and strong winds have created a reactive wind slab on exposed slopes in the alpine and tree line. This new slab sits over a very faceted snowpack creating a weak interface. Natural and skier trigger avalanches to size 2 were reported today.
Combinations of new snow and loose facets are contributing to this problem, expect sluffing out of steep alpine slopes and gullies. These sluffs are picking up mass and running far.
50cm of storm snow with strong gusting winds is sitting over a very weak old surface of facetted snow. Cracking and whumphing was observed yesterday from groups out skiing. With additional snowload and settlement the surface slab will remain touchy
Where the new snow is unconsolidated heavy sloughing is expected. Add another 10cm of new snow today and in steep terrain these slides could entrain enough mass to be an issue for skiers and riders.
72 hours of intense ridgetop transport due to strong SW winds has created windslabs. Numerous natural avalanches were observed from a variety of aspects, particularly alpine gulley features and planar NE slopes.
The depth of this crust is now highly variable, and may as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential with this new loading pattern.
Although there has been extensive scouring, the weak facets will likely continue to shed from steep rocky terrain.
New snow and strong winds have created a windslab on exposed slopes in the alpine and tree line that could be easilly skier triggered. This new slab sits over a very faceted snowpack creating a weak interface.
New snow and strong winds have created a windslab on exposed slopes in the alpine and tree line that could be easily skier triggered. This new slab sits over a very faceted snowpack creating a weak interface.
~80cm of storm snow is settling into a slab. It sits on a weak and reactive layer of facets and spotty surface hoar. Yesterday skiers accidentally triggered a storm slab avalanche, partially burying a member of the group. Human triggering is likely.
With ~80cm of light new snow available for transport, sustained SW winds will have loaded lee slopes.  In windloaded areas, deeper slabs are expected to bond poorly to the facetted snow beneath it. Avoid slopes that have been loaded by wind.
Where the new snow is unconsolidated heavy sloughing is expected. In steep terrain these slides could entrain enough mass to be an issue for skiers and riders.
Intense ridgetop transport due to strong SW winds has created windslabs. Numerous natural avalanches were observed from a variety of aspects, particularly alpine gulley features and planar NE slopes.
The depth of this crust is now highly variable, and may as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential with this new loading pattern.
New snow and strong winds have created a windslab on exposed slopes in the alpine and tree line that could be easilly skier triggered. This new slab sits over a very faceted snowpack creating a weak interface.
New snow and strong winds have created a windslab on exposed slopes in the alpine and tree line that could be easily skier triggered. This new slab sits over a very faceted snowpack creating a weak interface.
80cm of storm snow is settling into a slab. The storm snow is poorly bonded to a reactive layer of facets and spotty surface hoar.
Lots of light new snow and sustained SW winds will have loaded lee slopes forming stiffer slabs. Wind slabs are poorly bonded to facetted snow below. A field team confirmed that these slabs were touchy around ridges and in areas of cornice growth.
Where the new snow is unconsolidated heavy sloughing is expected. In steep terrain these slides could entrain enough mass to be an issue for skiers and riders.
Strong winds have created a mosaic of snow depths across the landscape. These slabs will vary greatly in their triggering sensitivity requiring each slope to be carefully evaluated. The only rule of thumb to keep in mind is caution is advised.
The depth of this crust is now highly variable, and may be as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential with this new loading pattern.
New snow and strong winds have created a wind-slab on exposed slopes in the alpine and tree line that could be easily skier triggered. This new slab sits over a very faceted snowpack creating a weak interface.
New snow and strong winds have created a wind-slab on exposed slopes in the alpine and tree line that could be easily skier triggered. This new slab sits over a very faceted snowpack creating a weak interface.
Cold temperatures have kept recent storm snow light and powdery, but slab properties are beginning to form. The slab sits on the December 18 facet/ surface hoar down 50-60cm. Stability tests show that the storm slab is reactive to skier loads.
Strong SW winds during the last storm loaded lee slops and formed stiffer slabs. Wind slabs are poorly bonded to facetted snow below. A field team confirmed that these slabs were touchy around ridges and in areas of cornice growth.
Strong winds have created a mosaic of snow depths across the landscape. These slabs will vary greatly in their triggering sensitivity requiring each slope to be carefully evaluated. The only rule of thumb to keep in mind is caution is advised.
The depth of this crust is now highly variable, and may be as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential.
New snow and strong winds have created  wind-slabs on exposed slopes that can be easily triggered. These slabs sit over a very faceted snowpack creating a weak interface that will last for some time. 
New snow and strong winds have created slabs on in many areas above tree line that can be easily triggered. These slabs sit over a weaker faceted layer creating a weak interface that will last for some time.
Nearby operations have reported these failing in the middle of the snowpack, and in some cases stepping down to ground. They are most likely to be triggered in thin Rocky areas, which are more widespread in the Eastern areas of the Park.
These are more widespread than usual, existing on most aspects and elevations due to the intensity of previous winds. They will be hard to spot under new snowfall. New Wind Slabs will build with forecast Strong Westerlies on Monday.
Recent storm snow has been slow to form a slab in part due to cold temps. Slab properties are starting to form.  The slab rests on the Dec 18 facet/surface hoar layer down 50-60cm.  Stability tests show that the storm slab is reactive to skier loads.
Moderate to strong SW winds during this past week's storm formed soft slabs on lee features.  Field tests Thursday confirmed the slabs were reactive to skier loads around ridges.  These slabs may be hidden by Friday's snowfall.
New snow and strong winds have created wind-slabs on exposed slopes that can be easily triggered. These slabs sit over a very faceted snowpack creating a weak interface that will last for some time.
New snow amounts have slowly piled up, especially in Eastern areas with the influence of an up-slope flow. The weak Dec 19 facets do not provide much support for this snow and once a sluff is initiated in steep terrain, it can run a long distance
Strong winds have created a mosaic of snow depths across the landscape. These slabs will vary greatly in their triggering sensitivity requiring each slope to be evaluated carefully.
The depth of this crust is now highly variable, and may be as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential.
New snow and strong winds have created wind-slabs on exposed slopes that can be easily triggered. These slabs sit over a very faceted snowpack creating a weak interface that will last for some time.
New snow amounts have slowly piled up, especially in Eastern areas with the influence of an up-slope flow. The weak Dec 19 facets do not provide much support for this snow and once a sluff is initiated in steep terrain, it can run a long distance
Nearby operations have reported these failing in the middle of the snowpack, and in some cases stepping down to ground. They are most likely to be triggered in thin rocky areas, which are more widespread in the Eastern areas of the Park.
These are more widespread than usual, existing on most aspects and elevations due to the intensity of previous winds. They will be hard to spot under new snowfall. New Wind Slabs will build with forecast Strong Westerlies on Monday.
Strong SW wind during last week's storm formed windslab in the immediate lee of ridges and cross loaded features. Field tests Thursday confirmed the slabs could be reactive to skier loads around ridges.These slabs may be hidden by Friday's snowfall.
The recent storm snow has been slow to form a slab in part due to continued cool temperatures. Slab properties are starting to form and this is a concern given the Dec 18th facet/surface hoar weak layer down 50-60cm.
Strong winds have created a mosaic of snow depths across the landscape. These slabs will vary greatly in their triggering sensitivity requiring each slope to be evaluated carefully.
The depth of this crust is now highly variable, and may be as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential.
New snow and strong winds have created wind-slabs on exposed slopes that can be easily triggered. These slabs sit over a very faceted snowpack creating a weak interface that will last for some time.
New snow amounts have slowly piled up, especially in Eastern areas with the influence of an up-slope flow. The weak Dec 19 facets do not provide much support for this snow and once a sluff is initiated in steep terrain, it can run a long distance
New snow and strong winds have created wind-slabs on exposed slopes that can be easily triggered. These slabs sit over a very faceted snowpack creating a weak interface that will last for some time.
New snow amounts have slowly piled up, especially in Eastern areas with the influence of an up-slope flow. The weak Dec 19 facets do not provide much support for this snow and once a sluff is initiated in steep terrain, it can run a long distance
The recent storm snow has been slow to form a slab in part due to continued cool temperatures. Slab properties are starting to form and this is a concern given the Dec 18th facet/surface hoar weak layer down 50-60cm.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Previous strong winds have created a mosaic of snow depths across the landscape. These slabs will vary greatly in their sensitivity to triggering and requiring each slope to be evaluated carefully.
The depth of this crust is now highly variable, and may be as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential.
Up to 30cm of recent new snow from last week sits on top of a layer of facets (Dec 19 layer). The interface between the new and old snow is poorly bonded, resulting in many recent avalanches.
Up to 30cm of recent new snow from last week sits on top of a layer of facets (Dec 19 layer). The interface between the new and old snow is poorly bonded, resulting in many recent avalanches.
The snow from the past week has been slow to form a slab in part due to continued cool temperatures and little wind. Slab properties are now starting to form and this is a concern, given the poor bond to the Dec 18th facet layer down 50-60cm.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Plenty of unconsolidated powder lies on the snow surface. On steeper terrain, it has been observed to be moving fast and could push a person over a cliff.
Strong winds have created a mosaic of snow depths across the landscape. These slabs will vary greatly in their sensitivity to triggering and requiring each slope to be evaluated carefully.
The depth of this crust is now highly variable, and may be as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential.
Wind slabs up to 60cm+ from last week sit on top of a weak layer of facets (Dec 19 layer). This interface is poorly bonded, resulting in many recent avalanches. Some fresh snow overnight and strong winds are adding to this problem.
Wind slabs up to 60cm+ from last week sit on top of a weak layer of facets (Dec 19 layer). This interface is poorly bonded, resulting in many recent avalanches. Some fresh snow overnight and strong winds are adding to this problem.
Nearby operations have reported these failing in the middle of the snowpack, and in some cases stepping down to ground. They are most likely to be triggered in thin rocky areas, which are more widespread in the Eastern areas of the Park.
These are more widespread than usual, existing on most aspects and elevations due to the intensity of previous winds. They will be hard to spot under new snowfall. New Wind Slabs will build with forecast Strong Westerlies on Monday.
Up to 30cm of snow fell in the last 24hrs at treeline. Combined with SW winds, expect deep loaded pockets to exist on lee slopes. This new slab has buried a surface hoar layer that was spotty in its distribution and may catch people by surprise.
The weak, facetted snow from the cold snap in early December is now buried ~70-100cm. The slab over this layer is developing, and as the load on this layer grows it may become increasingly reactive.
In areas sheltered from the wind there is a lot of amazing, low density powder. Expect sluffing when skiing steeper pitches. With all the loose, light snow a small avalanche may pick up mass especially in more confined gully type terrain features.
Strong winds have created a mosaic of snow depths across the landscape. These slabs will vary greatly in their sensitivity to triggering and requiring each slope to be evaluated carefully.
The depth of this crust is now highly variable, and may be as deep as 1m in lee areas that have received significant loading due to strong SW winds. Careful evaluation of this interface is essential.
Wind slabs up to 60cm from last week sit on top of a weak layer of facets (Dec 19 layer). This interface is poorly bonded, resulting in many recent avalanches. This weak, faceted layer will persist for some time.
Fresh wind slabs 20-40 cm thick have formed in the lees of alpine features. These will be touchy in the short term with the current snow and wind forecast. Once initiated, they may trigger a persistent slab on the Dec.19th facets.
Wind slabs up to 60cm from last week sit on top of a weak layer of facets (Dec 19 layer). This interface is poorly bonded, resulting in many recent avalanches. This weak, faceted layer will persist for some time.
Fresh wind slabs 20-40 cm thick have formed in the lees of alpine features. These will be touchy in the short term with the current snow and wind forecast. Once initiated, they may trigger a persistent slab on the Dec.19th facets.
Up to 30cm of snow fell in the last 24hrs at treeline with another 15-25 expected today &amp; tonight. This new snow combined with mod gusting strong S winds has built a fresh reactive windslab in the Alpine that has potential to propagate widely.
Windslabs will vary in sensitivity to triggering.  Evaluate each slope carefully.
Recent large avalanches have been reported on this layer as snow load increases.
Wind slabs up to 60cm from last week sit on top of a weak layer of facets (Dec 19 layer). This interface is poorly bonded, resulting in many recent avalanches. This weak, faceted layer will persist for some time.
Thick wind slabs have formed in the lees of alpine features. These will be touchy in the short term with the current snow and wind forecast. Once initiated, they may trigger a persistent slab on the Dec.19th facets.
ICE CLIMBERS - watch out for large sluff in gullied routes as there is a lot of loose snow being blow around by the wind.
Wind slabs up to 60cm from last week sit on top of a weak layer of facets (Dec 19 layer). This interface is poorly bonded, resulting in many recent avalanches. This weak, faceted layer will persist for some time.
Thick wind slabs have formed in the lees of alpine features. These will be touchy in the short term with the current snow and wind forecast. Once initiated, they may trigger a persistent slab on the Dec.19th facets.
ICE CLIMBERS - watch out for large sluff in gullied routes as there is a lot of loose snow being blow around by the wind.
50cm storm snow in 48hrs with flurries expected today. The storm snow has buried a spotty surface hoar layer to dig and look for. The new load will take a few days to stabilize.
50cm of storm snow in 48hrs. The snowfall has been accompanied by moderate gusting to strong S winds has built a fresh reactive windslab in the alpine that has potential for wide propagation.
60cm of new snow from the past week sit on top of a weak layer of facets (Dec 19 layer). This interface is poorly bonded, resulting in many recent avalanches. This weak, faceted layer will persist for some time.
Thick wind slabs have formed in the lees of alpine features. These will be touchy in the short term with the current snow and wind forecast. Once initiated, they may trigger a persistent slab on the Dec.19th facets.
60cm of new snow from this past week sit on top of a weak layer of facets (Dec 19 layer). This interface is poorly bonded, resulting in many recent avalanches. This weak, faceted layer will persist for some time.
Thick wind slabs have formed in the lees of alpine features. These will be touchy in the short term with the current snow and wind forecast. Once initiated, they may trigger a persistent slab on the Dec.19th facets.
Hard slab conditions make triggering less likely.
This layer will weaken with the predicted cold weather.
These will be found on North and East aspects on Saturday, with lots of recent snow available as fetch. The main problem will move to immediate lees on South and West aspects on Sunday and Monday, as wind directions reverse to the North-East.
Nearby areas have seen these failing in the midpack facets in thicker areas and in loose sugary facets near the ground in thinner areas. They are most likely to be triggered in thin rocky areas, with variable snowpack depth.
60+ cm of new snow in the last 72 hours at tree line has created storm slabs most reactive at tree line and in the Alpine. The storm slab also stepped down to the Dec 18th interface yesterday on steep shallow southerly aspects with artillery control.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Moderate to strong winds have created wind slabs on all aspects, most reactive in the Alpine. These hidden slabs could be hiding under the new storm snow and have the potential to step down to deeper storm slabs
The Dec 19 facet interface is 30 to 100cm down. This interface is poorly bonded, resulting in many recent avalanches. This weak, faceted layer will persist for some time.
Thick wind slabs have formed in the lees of alpine features. Once initiated, they may trigger a persistent slab on the Dec.19th facets. As temperatures drop this week, expect this problem to become less reactive.
The Dec 19 facet interface is 30 to 100cm down. This interface is poorly bonded, resulting in many recent avalanches. This weak, faceted layer will persist for some time.
Thick wind slabs have formed in the lees of alpine features. Once initiated, they may trigger a persistent slab on the Dec.19th facets. As temperatures drop this week, expect this problem to become less reactive.
Hard slab conditions make triggering less likely.
This layer will weaken with the cold weather.
Moderate to strong winds, first from the S Friday and now from the N-NE, have redistributed 60cm+ of recent storm snow. Dec18 Facet interface down 80cm  is a major feature of the snowpack and should not be discounted in your evaluation.
Since Thursday we have received 60cm+ snow at 1900m elevation which is settling into a slab. Expect the forming slab to be most reactive at and above TL. The storm slab did step down to the Dec 18th interface with artillery and explosive control.
Cold temperatures and hard slab conditions make triggering less likely.&nbsp; Triggering from shallow spots a possibility.
This layer will weaken with cold temperatures.
Pay close attention to the texture of the snow surface as you are traveling, and watch out for dense, wind drifted snow which could indicate the presence of a wind slab. Areas near ridge crests or sides of gullies are obvious places to find these.
The bottom of the snowpack is weak and facetted, and will remain this way for the foreseeable future. Right now there is not much of a cohesive slab overlying this weak foundation, but it is still advisable to avoid large avalanche start zones.
Pay close attention to the texture of the snow surface as you are traveling, and watch out for dense, wind drifted snow which could indicate the presence of a wind slab. Areas near ridge crests or sides of gullies are obvious places to find these.
These are touchy, especially to the immediate lee of ridges. Look for these on the opposite side of features from normal. The storm snow will be slow to stabilize, due to cold temperatures. Wind Slab problems may develop on Wednesday.
The weak midpack facet layer is widespread, but highly variable slab thickness and sensitivity makes these hard to evaluate. These are difficult to trigger, but may be large. Rocky, wind-exposed areas are most suspect.
Christmas holiday storm snow has been redistributed first by strong S'ly winds last week now by N-E mod-strong winds. Watch for reverse loading on exposed terrain in the alpine and at treeline. Look for the Dec 18th layer and stay off convexities.
Arctic temperatures faceting the surface snow causing it to loose cohesion and release loose dry avalanches in steep alpine rocky terrain. Some have enough mass to be concern particularly to ice-climbers in confined terrain.
Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots remains a possibility.
This layer will weaken with cold temperatures. Weak facets continue to develop above and below the November crust found 20-40cm above the ground.
Pay close attention to the texture of the snow surface as you are traveling. Watch out for dense, wind drifted snow which could indicate the presence of a wind slab. Areas near ridge crests or sides of gullies are obvious places to find these.
The bottom of the snowpack is weak and facetted, and will remain this way for the foreseeable future. In most areas there is not much of a cohesive slab overlying this weak foundation, but it is still advisable to avoid large avalanche start zones.
Pay close attention to the texture of the snow surface as you are traveling, and watch out for dense, wind drifted snow which could indicate the presence of a wind slab. Areas near ridge crests or sides of gullies are obvious places to find these.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> In areas with less than 150cm of snow the weak mid pack facets from early December remain. This is a concern wherever a cohesive slab of recent snow sits on top of this weakness. Wind loaded areas are the primary concern. </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://www.avalanche.ca/map?panel=mountain-information-network-submissions%2F630bb3ce-cf74-4a00-a783-4a1dc6c63d74" target="_blank"><span class="s_9255B882">See Monday's profile here.</span></a><span class="s_AA239
">There is continued potential for skiers/boarders to trigger wind slabs in exposed areas at treeline/alpine elevations. These may step down to persistent weak layers. Fresh wind slabs on southerly aspects appear to be more reactive.
Arctic temperatures faceting the surface snow causing it to loose cohesion and release loose dry avalanches in steep alpine rocky terrain. Particularly concerning for ice-climbers in confined terrain.
Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots remains a possibility.
It is less clear where this layer remains. Shallow areas are weakening and breaking down this layer by faceting with cold temps. Be diligent in your snowpack investigation.
Wind slabs up to 40 cm thick exist in the alpine and some treeline locations. Even a small wind slab has the potential to step down into the weak facetted mid-pack resulting in a bigger avalanche.
The mid and lower pack is weak and facetted, and will remain this way for the foreseeable future. This layer is most concerning in areas where a cohesive slab overlies this weak foundation.
Wind slabs exist in alpine and some treeline locations. Watch for these wind slabs as you transition into alpine terrain.
In areas with less than 150cm of snow the weak mid pack facets from early December remain. This is a concern wherever a cohesive slab of recent snow sits on top of this weakness. Wind loaded areas are the primary concern.
">Widespread windslabs exist in exposed areas. These windslabs exist in unusual areas due to reverse loading by strong N'ly winds. Be especially cautious in areas where the consequences of even a small avalanche would be serious, such as over cliffs.
Wind slabs up to 40 cm thick exist in the alpine and some treeline locations. Even a small wind slab has the potential to step down into the weak facetted mid-pack resulting in a bigger avalanche.
The mid and lower pack is weak and facetted, and will remain this way for the foreseeable future. This layer is most concerning in areas where a cohesive slab overlies this weak foundation.
Wind slabs exist in alpine and some treeline locations. Watch for these wind slabs as you transition into alpine terrain.
In areas with less than 150cm of snow the weak mid pack facets from early December remain. This is a concern wherever a cohesive slab of recent snow sits on top of this weakness. Wind loaded areas are the primary concern.
Arctic temperatures faceting the surface snow causing it to lose cohesion and release loose dry avalanches in steep alpine rocky terrain. Particularly concerning for ice-climbers in confined terrain.
Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots remains a possibility.
The weak mid-pack facet layer is widespread, but&nbsp; the slab over it is variable. These may be&nbsp; difficult to trigger but&nbsp; are high consequence. Avoid large uniform features, shallow trigger points, and watch for slab properties in the upper snowpack.
">Widespread, touchy windslabs exist in exposed areas. These windslabs exist in unusual areas due to reverse loading by strong N'ly winds. Be especially cautious where the consequences of even a small avalanche would be serious, such as over cliffs.
Wind slabs up to 40 cm thick exist in the alpine and some treeline locations. Even a small wind slab has the potential to step down into the weak facetted mid-pack resulting in a bigger avalanche.
The mid and lower pack is weak and facetted, and will remain this way for the foreseeable future. This layer is most concerning in areas where a cohesive slab overlies this weak foundation.
Wind slabs exist in alpine and some treeline locations. Watch for these wind slabs as you transition into alpine terrain.
In areas with less than 150cm of snow the weak mid pack facets from early December remain. This is a concern wherever a cohesive slab of recent snow sits on top of this weakness. Wind loaded areas are the primary concern.
Arctic temperatures faceting the surface snow causing it to lose cohesion and release loose dry avalanches in steep alpine rocky terrain. Particularly concerning for ice-climbers in confined terrain.
Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots remains a possibility.
">Widespread, touchy wind slabs exist in exposed areas. These wind slabs exist in unusual areas due to reverse loading by strong N winds. Be especially cautious where the consequences of even a small avalanche would be serious, such as over cliffs.
The weak facet layer is isolated to thin snowpack areas where the presence of any slab over these crystals would spell concern. Avoid thin snowpack areas, use caution with large uniform features, and consider the potential for shallow trigger points.
Old windslabs are likely to be encountered in many areas TL and above and deserve respect, especially if they overly facets. West winds are forming fresh slabs along TL ridgecrests and in lee areas of the alpine with the snow that fell last weekend.
Wind slabs up to 40 cm thick exist in the alpine and some treeline locations. Even a small wind slab has the potential to step down into the weak facetted mid-pack resulting in a bigger avalanche.
The mid and lower pack is weak and facetted, and will remain this way for the foreseeable future. This layer is most concerning in areas where a cohesive slab overlies this weak foundation.
Wind slabs exist in alpine and some treeline locations. Watch for these wind slabs as you transition into alpine terrain.
In areas with less than 150cm of snow the weak mid pack facets from early December remain. This is a concern wherever a cohesive slab of recent snow sits on top of this weakness. Wind loaded areas are the primary concern.
Loose snow avalanches in gullied terrain can have larger consequences.
Arctic temperatures faceting the surface snow causing it to lose cohesion and release loose dry avalanches in steep alpine rocky terrain. Particularly concerning for ice-climbers in confined terrain.
Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots remains a possibility.
">Previous reverse loading has left behind wind slabs and firm wind pressed snow in the Alpine and at Tree line. Most of the skier triggered avalanches reported have been on Southerly aspects in shallow areas of the Alpine.
Faceting the surface snow causing it to lose cohesion and release loose dry avalanches in steep alpine rocky terrain. Particularly concerning for ice-climbers in confined terrain.
Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots remains a possibility.
Wind slabs exist in alpine and some treeline locations. Watch for these wind slabs as you transition into alpine terrain.
In areas with less than 150cm of snow the weak mid pack facets from early December remain. This is a concern wherever a cohesive slab of recent snow sits on top of this weakness. Wind loaded areas are the primary concern.
Wind slabs up to 40 cm thick exist in the alpine and some treeline locations. Even a small wind slab has the potential to step down into the weak facetted mid-pack resulting in a bigger avalanche.
The mid and lower pack is weak and facetted, and will remain this way for the foreseeable future. This layer is most concerning in areas where a cohesive slab overlies this weak foundation.
Reverse loading has left behind windslab and wind pressed snow in the alpine and at treeline.  Most of the skier triggered avalanches have been on Southerly aspects in shallow areas in the alpine.
Faceting of the surface snow is causing it to lose cohesion and release loose dry avalanches in steep terrain. Particularly concerning for ice-climbers in confined terrain.
Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots or in loaded gullies remains a possibility.
Natural and human triggering has tapered off in recent days, but forecasters still have little confidence and feel there is a high degree of variability across the forecast region. Where winbslabs exist be especially cautious.
Avoid thin snowpack areas, use caution with large uniform features, and consider the potential for shallow trigger points.
Windslabs that formed in immediate lees from previous West winds are now buried but may still be triggerable.
In areas with less than 150cm of snow the weak mid-pack facets from December remain. This is a concern wherever a more cohesive slab of snow sits on top of this weakness. Tree line or wind loaded areas seem to be the primary concern.
Windslab and wind effected snow is widespread from reverse loading winds over Christmas holidays. Pockets of slab reside on the Dec 26th surface hoar layer. Most recent skier triggered slides have been on S'ly aspects in shallow areas in the alpine.
Natural and human triggering has tapered off in recent days, but forecasters still have little confidence and feel there is a high degree of variability across the forecast region. Where winbslabs exist be especially cautious.
Small windslabs and loose snow avalanches can be triggered in the recent storm snow. The main concern is in areas where significant terrain traps exist. Take extra caution when traveling around cliffs and steep gullies.
Faceting of the surface snow is causing it to lose cohesion and release loose dry avalanches in steep terrain. 10-15cm of new snow will add to this problem. This is concerning for ice-climbers in confined terrain.
Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots or in loaded gullies remains a possibility. Winds shifting from the North will develop new slabs on Southerly slopes.
In areas with less than 150cm of snow the weak mid-pack facets from December remain. This is a concern wherever a more cohesive slab of snow sits on top of this weakness. Tree line or wind loaded areas seem to be the primary concern.
Small windslabs and loose snow avalanches are expected to be reactive for the next few days. The main concern for this problem is in areas with significant terrain traps. Take extra precautions when traveling around cliffs and steep gullies.
Overnight winds will have whipped the new snow around and created reactive soft slabs in alpine and tree-line lee features. These new slabs sit on old, widespread windslabs, which hide spotty surface hoar.
Various wind directions over the past 72hrs have created windslab on most aspects Treeline and above and rests upon a weak, faceted snowpack. Recent natural activity observed in steep cross loaded gullies.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Cold temps have facetted the snowpack and is causing it to lose cohesion and release loose dry avalanches in steep terrain.&nbsp; The 10-15cm of new snow will add to this problem. This is concerning for ice-climbers and skiers in confined/exposed terrain.
Winds from the north have created hard wind slabs in many areas, and these are reverse from normal locations. These slabs are hard to trigger, with a single person, but if they go it will be a dense piece of snow to ride.
The lower half of the snowpack is garbage, and will be for the distant future. Facets, crusts and depth hoar make for a very unsupported base for the snowpack. Large, avalanche prone features are out for now.
Winds from the north have created hard wind slabs in many areas, and these are reverse from normal locations. These slabs are hard to trigger, with a single person, but if they go it will be a dense piece of snow to ride.
Facets buried on Dec 19 are down 50-70 cm in some locations. This is a concern wherever a more cohesive slab of snow sits on top of this weakness. Tree line or wind loaded areas seem to be the primary concern.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> New storm snow with a little wind has created touchy Storm Slabs on many treeline and alpine slopes, especially likely in wind-exposed areas. </span><span class="s_2823317B">This will change to a Wind Slab problem</span><span class="s_AA239A9B"> (see below) as soon as winds are visibly transporting snow.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">This problem will </span><span class="s_2823317B">replace </span><span class="s_AA239A9B">the Storm Slab problem as soon as winds arrive. Rising temperatures will accelerate slab development. Monitor winds closely, watch for signs of wind affect, and avoid lee slopes if snow is blowing.
A weak layer of facets in the middle of the snowpack will be trying to adjust to new loading from recent snowfall, and forecast wind transport. A Moderate, Sudden Planar result in a snowpack test on Tuesday indicates potential for human triggering.
Stubborn windslabs are present in alpine lee features (ridge-crests, cross-loading gullies). These new slabs sit on old, widespread windslabs, which hide spotty surface hoar.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Winds from the north have created hard wind slabs in many areas, and these are reverse from normal locations. These slabs are hard to trigger, with a single person, but if they go it will be a dense piece of snow to ride.
The lower half of the snowpack is garbage, and will be for the distant future. Facets, crusts and depth hoar make for a very unsupported base for the snowpack. Large, avalanche prone features are out for now.
Winds from the north have created hard wind slabs in many areas, and these are reverse from normal locations. These slabs are hard to trigger, with a single person, but if they go it will be a dense piece of snow to ride.
Facets buried on Dec 19 are down 50-70 cm in some locations. This is a concern wherever a more cohesive slab of snow sits on top of this weakness. Tree line or wind loaded areas seem to be the primary concern.
Various wind directions over the past 72hrs have created windslab on most aspects at treeline and above and rests upon a weak, faceted snowpack. Recent natural activity observed in steep cross loaded gullies.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Cold temps have facetted the snowpack and is causing it to lose cohesion and release loose dry avalanches in steep terrain. The 10-15cm of new snow will add to this problem. This is concerning for ice-climbers and skiers in confined/exposed terrain.
Stubborn windslabs are present on alpine features (ridge-crests, cross-loading gullies). These new slabs are variable in distribution so assess each slope independently. They will be most reactive on convex rolls and in unsupported terrain.
Variable winds have created a complex situation of cross and, reverse loaded features through the region. Stripped ribs, ridge-tops, and open features threaten to push users into areas where the snow is over-loaded and created layered wind-slabs.&nbsp;
The faceted snowpack continues to lose cohesion and release loose dry avalanches from steep terrain. This is concerning for ice-climbers and skiers in confined/exposed terrain.
Winds from the north have created hard wind slabs in many areas, and these are reverse from normal locations. These slabs are hard to trigger, with a single person, but if they go it will be a dense piece of snow to ride.
The lower half of the snowpack is garbage, and will be for the distant future. Facets, crusts and depth hoar make for a very unsupported base for the snowpack. Large, avalanche prone features are out for now.
Winds from the north have created hard wind slabs in many areas, and these are reverse from normal locations. These slabs are hard to trigger, with a single person, but if they go it will be a dense piece of snow to ride.
Facets buried on Dec 19 are down 50-70 cm in some locations. This is a concern wherever a more cohesive slab of snow sits on top of this weakness. Tree line or wind loaded areas seem to be the primary concern.
Stubborn windslabs exist on alpine features(ridge-crests, cross-loading gullies) from mod SW winds. These slabs are variable in distribution so assess each slope independently. They will be most reactive on convex rolls and in unsupported terrain.
Winds from the north have created hard wind slabs in many areas, and these are reverse from normal locations. These slabs are hard to trigger, with a single person, but if they go it will be a dense piece of snow to ride.
The lower half of the snowpack is garbage, and will be for the distant future. Facets, crusts and depth hoar make for a very unsupported base for the snowpack. Large, avalanche prone features are out for now.
Winds from the north have created hard wind slabs in many areas, and these are reverse from normal locations. These slabs are hard to trigger, with a single person, but if they go it will be a dense piece of snow to ride.
Facets buried on Dec 19 are down 50-70 cm in some locations. This is a concern wherever a more cohesive slab of snow sits on top of this weakness. Wind loaded areas seem to be the primary concern.
Variable winds have created a complex situation of cross and, reverse loaded features through the region. Stripped ribs, ridge-tops, and open features threaten to push users into areas where the snow is over-loaded and created layered wind-slabs.
The faceted snowpack continues to lose cohesion and release loose dry avalanches from steep terrain. This is concerning for ice-climbers and skiers in confined/exposed terrain.
Facets in the midpack have produced sporadic test results, and loads in thin Alpine areas could trigger Deep Persistent Slabs on a Depth Hoar/Crust combo near the bottom of the snowpack. Near-zero temps may increase sensitivity of these layers.
Strong, gusty Westerly winds have caused variable distribution of hard Wind Slabs in open areas - pay attention on all aspects.  This problem also exists Below Treeline in the Front (Eastern) Ranges and near the Waterton Lakes.
Stubborn windslabs exist on alpine features(ridge-crests, cross-loading gullies) from mod SW winds. These slabs are variable in distribution so assess each slope independently. They will be most reactive on convex rolls and in unsupported terrain.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B"> </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Winds from the north have created hard wind slabs in many areas, and these are reverse from normal locations. These are becoming harder to initiate, and will likely not be a problem in a few days time.
The lower half of the snowpack is garbage, and will be for the distant future. Facets, crusts and depth hoar make for a very unsupported base of the snowpack. These are also harder to initiate, but will cause a large avalanche if triggered.
Winds from the north have created hard wind slabs in many areas, at alpine and tree line elevations. These slabs are hard to trigger, with a single person. This is becoming less likely to initiate and will likely phase out soon.
Facets buried on Dec 19 are down 50-70 cm in some locations. This is a concern wherever a more cohesive slab of snow sits on top of this weakness. Wind loaded areas seem to be the primary concern.
Variable winds have created a complex situation of cross and, reverse loaded features through the region. Stripped ribs, ridge-tops, and open features threaten to push users into areas where the snow is over-loaded and created layered wind-slabs.
The faceted snowpack has little cohesion producing loose dry avalanches in steep terrain. This is concerning for ice-climbers and skiers in confined/exposed terrain.
Thin stiff windslabs exist along ridge crests and cross loaded features formed by moderate SW winds. These slabs are variable in distribution so take time to assess slopes independently. Avoid convex rolls and unsupported terrain.
Variable winds have created a situation of cross and, reverse loaded features through the region. Stripped ribs, ridge-tops, and open features threaten to push users into areas where the snow has formed new windslabs.
The lower half of the snowpack is garbage, and will be for the distant future. Facets, crusts and depth hoar make for a very unsupported base of the snowpack. These are also harder to initiate, but will cause a large avalanche if triggered.
Facets buried on Dec 19 are down 50-70 cm in some locations. This is a concern wherever a more cohesive slab of snow sits on top of this weakness. Wind loaded areas seem to be the primary concern.
Weak faceted layers from previous cold temps in the mid and lower snowpack remain a concern, particularly in shallow snowpack areas where facetting is more pronounced and triggering is more likely.
Thin stiff windslabs exist along ridge crests and cross loaded features formed by moderate SW winds. These slabs are variable in distribution so take time to assess slopes independently. Avoid convex rolls and unsupported terrain.
The lower half of the snowpack is weak, consisting of facets, decomposing crusts, and depth hoar. Any slab sitting above this should be considered suspect. While these slabs may be difficult to trigger, the result could be a large avalanche.
The lower half of the snowpack is weak, consisting of facets, decomposing crusts, and depth hoar. Any slab sitting above this should be considered suspect. While these slabs may be difficult to trigger, the result could be a large avalanche.
Forecasted snow amounts expected to be 10 to 30cms over the next 24 hours. Regardless of volume, this snow will fall on to a variety of surface forms (rocks, small surface hoar; facets, or hard windslabs).
If triggered, potential for large destructive avalanches incorporating the season's snowpack.
15 cm of new snow in the last 24 hrs falls with moderate S winds is building a new slab.  Steady snowfall over the next few days will add load to this developing slab which sits on a weak layer of facets and surface hoar. 
This new snow buries, potentially hiding, an old variable windslab that can still be reactive. These slabs are variable in distribution so take time to assess slopes independently.
Forecasted snow amounts expected to be 10 to 30cms over the next 48 hours. New slabs expected to be touchy in lee terrain, particularly on North Easterly terrain at upper elevations.
Concern for new snow overloading the season's weak faceted basal layers.
There has been 25 cm of new snow at treeline and up to 50cm in alpine. Some cracking in storm snow was observed on Tuesday. Additional snow is expected on Wednesday. This storm snow will take several days to settle out.
Recent moderate to strong SW winds have redistributed storm snow creating wind slabs in alpine and some treeline locations.
Recent storm snow is sluffing out of steep terrain. Ice climbers in particular should be paying attention to this problem.
The midpack in most areas is weak and facetted. Any slab sitting overtop of this weakness should be considered suspect. While these slabs may be difficult to trigger, the result could be a large avalanche.
Moderate to strong south and sw winds have scoured the alpine and created some new windslabs in alpine and some treeline features.
35cm of new snow was accompanied by moderate S winds. This has created a new storm slab that is poorly bonded to a weak layer of facets and surface hoar. This slab will be reactive at all elevation bands, especially with the warm temp's today.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
The midpack in most areas is weak and facetted. Any slab sitting overtop of this weakness should be considered suspect. While these slabs may be difficult to trigger, the result could be a large avalanche.
Moderate to strong south and sw winds have scoured the alpine and created some new windslabs in alpine and some treeline features.
There has been 25 cm of new snow at treeline and up to 50cm in alpine. Some cracking in storm snow was observed on Tuesday. Additional snow is expected. This storm snow will take several days to settle out.
Recent moderate to strong SW winds have redistributed storm snow creating wind slabs in alpine and some treeline locations.
Recent storm snow is sluffing out of steep terrain. Ice climbers in particular should be paying attention to this problem.
The interface between the new and old slabs could be touchy.
Storm slabs may be present  especially at tree-line.  The weight of this may overload the weak facets below.
Concern for new snow overloading the season's weak faceted basal layers.
50cm of new snow, accompanied by moderate southerly winds and warming temperatures, has created a new storm slab . The slab is poorly bonded to a weak layer of facets and surface hoar. This slab is widespread and reactive.
Cross-loaded gullies and ridgeline features will be especially sensitive to human triggering.
Isolated locations where this layer is persisting. Has morphed into depth hoar in many areas.
The midpack in most areas is weak and facetted. Any slab sitting overtop of this weakness should be considered suspect and there is a high level of uncertainty around this layer.
Recent winds  ranging from East to SW have created some new windslabs in alpine and treeline features. In some cases, these have been observed to provide enough weight to step down to the deep persistent layer, causing a larger avalanche.
40cm of new snow has settled into slabs with the warm and humid weather. These will be most reactive at lower elevations in steep (35+ degree) terrain where they sit over facets. Cooling temperatures over the next few days should slow activity.
Recent moderate to strong SW winds have redistributed storm snow creating wind slabs in alpine locations.
50cm of new snow, accompanied by moderate southerly winds and warming temperatures, has created a new storm slab . The slab is poorly bonded to a weak layer of facets and surface hoar. This slab is widespread and may become more reactive in the sun.
The midpack in most areas is weak and facetted. Any slab sitting overtop of this weakness should be considered suspect and there is a high level of uncertainty around this layer.
Recent winds ranging from East to SW have created some new windslabs in alpine and treeline features. In some cases, these have been observed to provide enough weight to step down to the deep persistent layer, causing a larger avalanche.
Any loaded alpine features will be especially sensitive to human triggering.
Isolated locations where this layer is persisting. Has morphed into depth hoar in many areas.
40cm of new snow has settled into slabs with the warm and humid weather. These will be most reactive at lower elevations in steep (35+ degree) terrain where they sit over facets. Cooling temperatures over the next few days should slow activity.
Recent moderate to strong SW winds have redistributed storm snow creating wind slabs in alpine locations.
Due to the depth of the weak layers, trigger points are isolated but the consequence would be high. Shallow areas, rocky areas, and areas with Variable snowpack depth should be avoided. This problem may also exist Below Treeline in the Front Ranges.
40 to 60cm of storm snow last week with warm temperatures and strong winds created a storm slab. This layer will need time to heal and bond to older surfaces like near surface faceting and wind slabs. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
The midpack in most areas is weak and facetted. Any slab sitting overtop of this weakness should be considered suspect and there is a high level of uncertainty around this layer.
Recent winds ranging from East to SW have created some new windslabs in alpine and treeline features. In some cases, these have been observed to provide enough weight to step down to the deep persistent layer, causing a larger avalanche.
40cm of new snow has settled into slabs with the warm and humid weather. These will be most reactive at lower elevations in steep (35+ degree) terrain where they sit over facets. Cooling temperatures over the next few days should slow activity.
Recent moderate to strong SW winds have redistributed storm snow creating wind slabs in alpine locations.
Any loaded alpine features will be especially sensitive to human triggering.
Isolated locations where this layer is persisting. Has morphed into depth hoar in many areas.
Storm slabs are most volatile near ridge crest and terrain exposed to the wind and lee features. Evaluate each slope independently, avoid steep, shallow, unsupported terrain, cornices and terrain traps.
Main concern is for cross loaded gully features and steep rocky convexities on lee aspects where fresh windslabs are present.
The weak lower snowpack is susceptible to triggering in lee areas that have been recently loaded by SW winds and last week's snow.
Moderate to strong SW winds with the storm that ended Dec 19 created wind slabs in specific alpine locations.
The midpack in most areas is weak and facetted. Any slab sitting overtop of this weakness should be considered suspect and there is a high level of uncertainty and variability concerning this layer.
Recent winds ranging from East to SW have created some new windslabs in alpine and treeline features. In some cases, these have been observed to provide enough weight to step down to the deep persistent layer, causing a larger avalanche.
Persistent slabs are most volatile near ridge crest, shallow areas and lee features. Down flow winds in the Sir Don Range have been observed. This layer overlies a variety of interfaces from surface facets to wind slabs.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Due to the depth of the weak layers triggering is unlikely, but the consequence would be high. Avoid shallow rocky areas in big open terrain. This problem may also exist Below Treeline in the Front Ranges.
Watch for fresh Wind Slabs to develop as winds increase later in the week.
Main concern is for cross loaded gully features and steep rocky convexities on lee aspects where fresh windslabs are present.
The weak lower snowpack is susceptible to triggering in lee areas that have been recently loaded by SW winds and last week's snow.
The midpack in most areas is weak and facetted. Any slab sitting overtop of this weakness should be considered suspect. There is a high level of uncertainty and variability concerning this layer.
Small windslabs persist in lee alpine areas. Watch for these wind slabs as you approach ridge-tops and cross-loaded features.
Lingering windslabs exist from last weeks stronger winds. Watch for these windslabs as you transition into alpine terrain.
Last weeks storm snow has settled into a 20-40 cm slab. This slab is starting to settle out, but snowpit tests show this layer to be reactive in some locations, particularly around treeline where surface hoar has been found.
Wind slabs are present at ridge-top and on cross-loaded alpine features. They overlay a variety of old surfaces, from facets to surface hoar to old wind slabs. They are most reactive in shallow, thin snowpack areas.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Main concern is for cross loaded gully features and steep rocky convexities on lee aspects where fresh windslabs are present.
The weak lower snowpack is susceptible to triggering in lee areas that have been recently loaded by SW winds and last week's snow.
The midpack in most areas is weak and facetted. Any slab sitting overtop of this weakness should be considered suspect. There is a high level of uncertainty and variability concerning this layer.
Last weeks storm snow has settled into a 20-40 cm slab. This slab is starting to settle out, but snowpit tests show this layer to be reactive in some locations, particularly around treeline where surface hoar has been found.
Various moderate to hard shears have been identified in the mid-pack. Although hard to trigger, if you find the sweet spot there is potential for larger avalanches.
Wind slabs exist at ridge-top and on cross-loaded alpine features. They overlay a variety of surfaces, and are of most concern on steep terrain where the consequences of even a small avalanche are high, such as over cliffs and terrain traps.
Main concern is for cross loaded gully features and steep rocky convexities on lee aspects where fresh windslabs are present.
The weak lower snowpack is susceptible to triggering in lee areas that have been recently loaded by SW winds and last week's snow.
Due to the depth of the weak layers triggering is unlikely, but the consequence would be high. Avoid shallow rocky areas in big open terrain. This problem may also exist Below Treeline in the Front Ranges.
Watch for fresh Wind Slab development as the winds increase in to the weekend.
The mid and lower snowpack is weak, with both facets and surface hoar buried and producing shears. The tipping point is whether or not there is a cohesive slab overlying these layers. Pay close attention to the slab properties in the upper snowpack.
Because the snowpack is so weak, we don't trust any avalanche starting zones. Avoid steep areas where avalanches can start, and think carefully if you cross tracks or run out zones. Continued conservative choices will remain important for some time.
Wind slabs exist at ridge-top and on cross-loaded alpine features. They overlie a variety of surfaces, and are of most concern on steep terrain where the consequences of even a small avalanche are high, such as over cliffs and terrain traps.
Because the snowpack is so weak, we don't trust any avalanche starting zones. Avoid steep areas where avalanches can start, and think carefully if you cross tracks or run out zones. Continued conservative choices will remain important for some time.
The mid and lower snowpack is weak, with both facets and surface hoar buried and producing shears. The tipping point is whether or not there is a cohesive slab overlying these layers. Pay close attention to the slab properties in the upper snowpack.
Big open alpine features, especially with a solar aspect, should be avoided.  Recent natural avalanche activity on these slopes is expected to continue. 
The weak lower snowpack is susceptible to triggering.
Wind slabs exist at ridge-top and on cross-loaded alpine features. They overlie a variety of surfaces, and are of most concern on steep terrain where the consequences of even a small avalanche are high, such as over cliffs and terrain traps.
Because the snowpack is so weak, we don't trust any avalanche starting zones. Avoid steep areas where avalanches can start, and think carefully if you cross tracks or run out zones. Continued conservative choices will remain important for some time.
The mid and lower snowpack is weak with facets producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces easy to moderate shears. Pay close attention to the slab properties overlying these layers
Big open alpine features, especially with a solar aspect, should be avoided. Recent natural avalanche activity on these slopes is expected to continue.
The weak lower snowpack is susceptible to triggering.
Wind slabs exist at ridge-top and on cross-loaded alpine features. They sit atop a variety of surfaces and are most concerning on steep terrain where the consequences of even a small avalanche are high.
The snowpack is so weak, we don't trust slopes where a slab sits over the deeper weak layers. Avoid steep slopes with this structure. Continued conservative choices will remain important for some time.
New wind slabs have been reactive in the Lake Louise region near ridge top in the last 24 hours. These will likely remain reactive in the short term while winds speeds stay elevated.
Big open features should be avoided. Recent natural avalanche activity on these slopes is expected to continue.
Wind loading and shedding from steep faces, especially concerning for ice climbers.
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Pay close attention to the slab properties overlying these layers.
New slabs will be reactive in the short term while wind speeds remain elevated.&nbsp; Watch locally for their formation in exposed lee and cross-loaded areas.&nbsp;
Due to the depth of the weak layers triggering is unlikely, but the consequence would be high. Avoid shallow rocky areas in big open terrain. This problem may also exist Below Treeline in the Front Ranges.
Expect small pockets of fresh Wind Slab in lees.
Incoming new snow will not likely bond well to previous surfaces.&nbsp; Watch for fast running sluffs in steep terrain if snowfall amounts exceed 10cm.
Wind slabs exist at ridge-top and on cross-loaded alpine and treeline features.  Given the right location they may be triggered by skiers.  They are of most concern in high consequence locations such as steep terrain.
The snowpack is weak. Slopes where a slab sits over the deeper weak layers should be treated as suspect. Avoid steep slopes with this structure. Continued conservative choices will remain important for some time.
Continued strong to extreme wind and light amounts of new snow continue to form slabs in lees areas. These will remain reactive in the short term while winds speeds stay elevated.
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Pay close attention to the slab properties overlying these layers.
New touchy slabs will be reactive in the short term while wind speeds remain elevated. Watch locally for their formation in exposed lee and cross-loaded areas.
Big open features and climbs with significant overhead hazard should be avoided as the weak bond between layers strengthens.
Wind loading and shedding from steep faces, especially concerning for ice climbers.
Wind slabs exist at ridge-top and on cross-loaded alpine and treeline features. Given the right location they may be triggered by skiers. They are of most concern in high consequence locations such as steep terrain.
The snowpack is weak. Slopes where a slab sits over the deeper weak layers should be treated as suspect. Avoid steep slopes with this structure. Continued conservative choices will remain important for some time.
Strong to extreme South and West winds combined with 5 to 10 cm of new snow continue to form slabs in lees areas Monday. These are likely to remain reactive for some time after the winds abate
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Increased slab development overlying these layers is likely with recent winds.
Fresh windslabs exist in the immediate lees and will remain reactive for some time after the winds abate.
Newly formed wind slabs from the recent strong wind event have had minimal time to start bonding. Below ridge crests, cross-loaded features and any wind loaded area are suspect for human triggering.
The snowpack is weak. Slopes where a slab sits over the deeper weak layers should be treated as suspect. Until we get some rounding or compression, the snowpack is going to remain fragile to input.
Strong to extreme South and West winds combined with 5 to 10 cm of new snow continue to form slabs in lees areas Monday. These are likely to remain reactive for some time after the winds abate.
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Increased slab development overlying these layers is likely with recent winds.
Fresh windslabs exist in the immediate lees and will remain reactive for some time after the winds abate.
Thin pockets of Wind Slab are expected to be hard and unreactive in wind exposed areas, but may be soft enough to trigger in typically sheltered areas. The problem may switch to S and W aspects if we get more snowfall than forecast with NE winds.
Although it has been several weeks since natural activity was last seen on the deeply buried December Facets / November Crust, the consequences of triggering a large avalanche from just the wrong shallow, faceted spot, could be dire.
Recent windloading has created windslab on all aspects in the alpine. On south and west aspects the windslab will become easier to trigger with solar warming. Evidence of this windslab is widespread, obvious &amp; it will take more time to become stable
The snowpack is weak. Slopes where a slab sits over the deeper weak layers should be treated as suspect. Until we get some rounding or compression, the snowpack is going to remain fragile to input.
Activity on new wind slabs has slowed down due to colder temperatures, but watch for them in steep exposed areas at upper elevations. Up until 2 days ago there was quite a bit of wind slab avalanche activity.
Big open features and climbs with significant overhead hazard should be avoided until the weak bond between layers strengthens.
Wind loading and shedding from steep faces, especially concerning for ice climbers.
Big open features and climbs with significant overhead hazard should be avoided until the weak bond between layers strengthens.
Wind loading and shedding from steep faces, especially concerning for ice climbers.
Big open features, cross-loaded gulleys and ice climbs below significant overhead hazard should be avoided as the weak bond between layers strengthens.
Faceted snow may be triggered on steep solar aspects.
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Increased slab development overlying these layers is likely with recent winds.
Wind slabs exist in the immediate lees which are decreasing in sensitivity to triggering.
Recent windloading has created windslab and fragile cornices in the alpine. The wind slab will be most reactive on convex or unsupported rolls. On south and west aspects the windslab will become easier to trigger with solar warming.
The snowpack is weak. Slopes where a slab sits over the deeper weak layers should be treated as suspect. Until we get some rounding or compression, the snowpack is going to remain fragile to any input. Expect the hazard to rise with incoming snow.
Big open features, cross-loaded gulleys and ice climbs below significant overhead hazard should be treated cautiously.
Faceted snow is easily triggered and can grow quickly by entraining surrounding snow.
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Increased slab development overlying these layers is likely with recent winds.
Previous strong to extreme winds left behind a variety of surface conditions, from hard wind slabs to complete scouring near ridge crests. Wind slabs will be most reactive on lee terrain features or cross loaded areas.
The snowpack is weak. Slopes where a slab sits over the deeper weak layers should be treated as suspect. Increasing load and further slab development will make these slabs more sensitive through the weekend.
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Slab development will make triggering these layers more likely this weekend.
New snow is reverse loading on weak surface facets or surface hoar. These new slabs will bond poorly.&nbsp; Last week's slab from M to S winds are still suspect.&nbsp; Big open features and cross-loaded gulleys should be avoided until storm passes.
Faceted snow&nbsp; on ledges and above ice climbs can be easily triggered and can grow quickly by entraining surrounding snow especially in gulley features.
This problem will grow throughout the forecast period, and may be widespread. Pay attention to obvious signs of instability, do snowpack tests on representative slopes, and only expose one at a time. Conservative decision-making is essential.
Deeply buried Persistent weak layers from a cold winter have produced few results in recent testing, but are now being heavily loaded. In sheltered/windward terrain, this is the first large load on these layers. Avoid previously shallow areas.
Storm slabs are forming over a weak old snow surface that developed during the recent cold clear weather. Freshly formed slabs will be more sensitive to human triggering in wind exposed terrain.
The snowpack is weak. Slopes where a slab sits over the deeper weak layers should be treated as suspect. Increasing load and further slab development will make these slabs more sensitive Sunday and Monday.
Small in size currently, watch locally for their formation and the bed surface they are lying on.  There are wind layers, facets, surface hoar and sun crust depending on location.  If there is increased E wind, watch for reverse loading.
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Current slab development will make triggering these layers more likely.
Currently small in size, watch locally for their formation and the bed surface below. This can be facets, wind layers, surface hoar, or sun crust. As there is an easterly component, if there are increased winds watch for reverse loading.
New snow is reverse loading on weak surface facets or surface hoar. These new slabs will bond poorly. Last week's slab from M to S winds are still suspect. Big open features and cross-loaded gulleys should be avoided until storm passes.
Faceted snow on ledges and above ice climbs can be easily triggered and can grow quickly by entraining surrounding snow especially in gulley features.
Expect widespread sensitive windslab in exposed terrain at and above treeline. The slab will be hidden by last night's storm snow making it harder to detect. These slabs reside on a variety of weak surfaces and are susceptible to human triggering.
Deeply buried Persistent weak layers from a cold winter have produced few results in recent testing, but are now being heavily loaded. In sheltered/windward terrain, this is the first large load on these layers. Avoid previously shallow areas.
Loose Dry avalanches will fail naturally in steep areas.
The snowpack is weak. Slopes where a slab sits over the deeper weak layers should be treated as suspect. Increasing load and further slab development will make these slabs more sensitive Monday and Tuesday.
Small in size currently, watch locally for their formation and the bed surface they are lying on. There are wind layers, facets, surface hoar and sun crust depending on location.
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Current slab development will make triggering these layers more likely.
Currently small in size, watch locally for their formation and the bed surface below. This can be facets, wind layers, surface hoar, or sun crust. Watch for reverse loading where east winds are present.
Wind and storm slabs have produced many avalanches of late, up to size 3.5! Storm slabs were hair triggered yesterday on the west end of the park averaging size 1.5 at and below TL. Saturday a wind slab was triggered on a solar asp sliding on a crust 
Moderate NE winds have transported 10cm of storm snow onto south westerly slopes building windslab. These new slabs will bond poorly. Last week's slab from M to S winds are still suspect. Big open features and cross-loaded gulleys should be avoided.
10cm of storm snow over facets can be easily triggered and grow quickly by entraining surrounding snow especially in gulley features.
This is a weak and difficult to predict problem. We expect it to become more reactive now with more load, and once triggered may cause large avalanches running into the lower elevations. Avoid all big avalanche terrain.
We suspect this problem exists at the higher elevations, but do not yet have a real observation of it.&nbsp; With the current fresh snow available for transport, only a very small increase in winds speed will create wind slabs.
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears. Current slab development will make triggering these layers more likely.
We suspect this problem exists at the higher elevations, but do not yet have a real observation of it.  With the current fresh snow available for transport, only a very small increase in winds speed will create wind slabs.
30cm of storm snow overlies a variety of surfaces to which it may bond poorly. Skiers have triggered small, unsupported slopes. As the snow settles and forms a slab expect it to become more reactive and capable of propagating into larger avalanches.
N'ly winds at ridgetop, and downflow winds in valley bottoms and drainages have changed the landscape, forming drifts and windslabs in unusual places. Be especially cautious on S'ly aspects where reverse loading has formed windslabs on a suncrust.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
This is a weak and difficult to predict problem. We expect it to become more reactive with more load (Thurs), and once triggered may cause large avalanches running into the lower elevations.
Soft wind-slabs exist at high elevation. Additionally, forecasters noticed wind-slabs in lee areas with a West aspect due to the N and E wind during the last storm.
The generally weak, facetted mid pack is producing moderate to hard shears. In the upper snowpack around treeline a buried layer of surface hoar produces variable shears.
Soft wind slabs were observed by forecasters today in the alpine. Of particular interest was the observation of soft slabs in West facing lee areas produced from recent E and N wind.
Moderate NE winds have transported 10cm of storm snow onto south westerly slopes building windslab. These new slabs will bond poorly. Last week's slab from M to S winds are still suspect. Big open features and cross-loaded gulleys should be avoided.
10cm of storm snow over facets can be easily triggered and grow quickly by entraining surrounding snow especially in gulley features.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">30cm of storm snow sits on a variety of surfaces to which it may bond poorly (</span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Profiles/20170207%20Balu%20Pass.png" target="_blank"><span class="s_9255B882">check out this snow profile</span></a><span class="s_AA239A9B">). As the snow forms a slab, and with new load from the storm expect it to become more reactive and capable of propagating into larger avalanches
N'ly winds at ridgetop, and downflow winds in drainages have changed the landscape, forming windslabs in unusual places. Be especially cautious on S'ly aspects where reverse loading has formed windslabs on a suncrust.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Expect rapid Wind Slab development with incoming weather system.
Weak layers from a cold winter have produced few results in recent testing, but are now being heavily loaded, time will tell when the tipping point is reached for these to come back to life.
This is a weak and difficult to predict problem. We expect it to become more reactive with more load (Thurs), and once triggered may cause large avalanches running into the lower elevations.
Fresh wind slabs can be expected with the new snow and strong forecasted winds.
The persistent weak layer in the mid-pack may waken up with the additional storm snow and the warming temperatures forecasted for Thursday.
New snow and strong forecasted winds will create new wind slabs in alpine and treeline regions.
Strong SW winds building windslab with recent storm snow and expected to bond poorly.
Forecasted storm snow (~30cm) will fall over a poorly bonded, weak snow pack. Small sluffs have potential to entrain a lot of mass and grow in size quickly.
The Jan 17 interface or deeper layers might be woken up with the forecasted heavy snowfall and would result in large avalanches.
Heavy loading from recent storms has created widespread storm slabs. With more snow and wind for today, natural avalanches on this layer are likely. This is a problem to avoid today, staying clear of large open avalanche terrain above tree line.
With 15cm of new snow overnight and 18cm on the way today, expect to see loose dry avalanches occurring naturally from steep terrain. Even steep open lines below tree line will require some sluff management today.
Expect drifted snow to be deeper than 100 cm in leeward areas on Friday and very susceptible to human triggering. Give avalanche terrain a wide berth and remember that any fracture lines my extend further that you expect.
This problem is likely to &quot;wake up&quot; during this storm, resulting in large avalanches that could potentially run full path. Avoid avalanche terrain on Friday. and remember to watch out for overheard slopes and gullies.
Expect drifted snow to be deeper than 100 cm in leeward areas on Friday and very susceptible to human triggering. Give avalanche terrain a wide berth and remember that any fracture lines my extend further that you expect.
This problem is likely to &quot;wake up&quot; during this storm, resulting in large avalanches that could potentially run full path. Avoid avalanche terrain on Friday. and remember to watch out for overheard slopes and gullies.
Moderate SW winds building windslab with recent storm snow and expected to bond poorly.
The Jan 17 interface or deeper layers might be woken up with the forecasted heavy snowfall and would result in large avalanches.
Widespread reactive storm slabs have formed. If triggered they have potential to run full path. Natural avalanche activity will taper off leaving slabs primed for human triggering.
45cm storm snow in last 48hrs and another 5cm on the way.  Expect to see loose dry avalanches occurring naturally in steep terrain.  Even steep open lines below treeline will require some sluff management today.
Strong Westerly winds have plenty of snow to move around at Treeline and above.  Combined with warm temperatures, wind slabs will be growing in size.  This problem will be most reactive on Saturday.&nbsp; These may be hard and stubborn in the alpine.
Likelihood of Storm Slabs in previous storm snow will decrease somewhat during the forecast period; however, they may be slow to bond with old surfaces, and can be surprising deep.
Several large avalanches have been observed from previously shallow terrain, where storm snow fell on large facets.  Observations have been limited; it is possible that Persistent slabs may be triggered in deeper areas also.
Expect drifted snow to be deeper than 100 cm in leeward areas on Saturday and very susceptible to human triggering. Give avalanche terrain a wide berth and remember that fracture lines may extend further that you expect.
Wind loading has resulted in numerous loose dry avalanches over the last 24 hours out of steep cliffs and gullies. Ice climbers in particular should avoid any climbs in avalanche terrain until this activity dies down.
The new snow has created a touchy slab over the weak facets at all elevations, resulting in many avalanches that could potentially run full path. Avoid avalanche terrain on Saturday and remember to watch out for overhead slopes and gullies.
Expect drifted snow to be deeper than 100 cm in leeward areas on Saturday and very susceptible to human triggering. Give avalanche terrain a wide berth and remember that fracture lines may extend further that you expect.
Wind loading has resulted in numerous loose dry avalanches over the last 24 hours out of steep cliffs and gullies. Ice climbers in particular should avoid any climbs in avalanche terrain until this activity dies down.
The new snow has created a touchy slab over the weak facets at all elevations, resulting in many avalanches that could potentially run full path. Avoid avalanche terrain on Saturday and remember to watch out for overhead slopes and gullies.
30-40cm of storm snow with warming temps has promoted fast settlement, forming a touchy storm slab.
Moderate to strong SW winds building windslab with recent storm snow and expected to bond poorly.
Avalanches initiated within the storm snow were stepping down to deeper layers and in some cases gouging to ground in thin snowpack areas.
ont-weight: bold;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">Widespread reactive storm slabs have formed from previous heavy snowfall and strong winds overnight! </span><span class="s_2823317B">If triggered they have potential to run full path</span><span class="s_AA239A9B">. Natural avalanche activity will taper off leaving slabs primed for human triggering.
The Jan 25th sun crust is buried down approx 60cm. Previous to the storm it was whumphing, showing easy sudden results and reactive to human triggering. If the storm slab is triggered it has the potential to step down and trigger this layer.
Expect drifted snow to be deeper than 100 cm in leeward areas on Sunday and very susceptible to human triggering over the next few days. Give avalanche terrain a wide berth as fracture lines may extend further that you expect.
The new snow has created a touchy slab over the weak facets at all elevations, resulting in many avalanches that could potentially run full path, of which there have been numerous examples.
Wind loading has resulted in numerous loose dry avalanches over the last 48 hours out of steep cliffs and gullies. This problem will remain Sunday as wind speeds stay elevated.
Expect drifted snow to be deeper than 100 cm in leeward areas on Saturday and very susceptible to human triggering. Give avalanche terrain a wide berth and remember that fracture lines may extend further that you expect.
The new snow has created a touchy slab over the weak facets at all elevations, resulting in many avalanches that could potentially run full path.
Wind loading has resulted in numerous loose dry avalanches over the last 48 hours out of steep cliffs and gullies. Ice climbers in particular should avoid any climbs in avalanche terrain until this activity dies down.
Strong SW winds building windslab with recent storm snow.&nbsp; Avalanche cycle continues on alpine lee slopes.
30-40cm of storm snow has formed a touchy storm slab.
Avalanches initiated within the storm snow may step down to deeper layers and in some cases gouging to ground in thin snowpack areas.
ont-weight: bold;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">Widespread reactive storm slabs have formed from previous heavy snowfall and strong winds overnight! </span><span class="s_2823317B">If triggered they have potential to run full path</span><span class="s_AA239A9B">. Reports came in of whumphing &amp; low elevation slabs releasing below treeline yesterday.
The Jan 25th sun crust is buried down approx 60cm. Previous to the storm it was whumphing, showing easy sudden results and reactive to human triggering. If the storm slab is triggered it has the potential to step down and trigger this layer.
Extreme SW winds building windslab with recent storm snow.
Avalanches initiated within the storm snow may step down to deeper layers and in some cases gouging to ground in thin snowpack areas.
Strong-Extreme Westerly winds are depositing snow further down slope than one might expect. Be cautious as you transition into wind affected snow.
While deep Storm Slabs from last weeks heavy snowfall have gained some strength over the past few days, this weeks warm temperatures may increase the likelyhood of triggering them.
Several large avalanches have been observed from previously shallow terrain, where storm snow fell on large facets. Observations have been limited; it is possible that Persistent slabs may be triggered in deeper areas also.
Strong to extreme wind on Sunday has created fresh wind-slabs that are ripe for human triggering. Give avalanche terrain a wide berth as fracture lines may extend further that you expect.
The new snow has created a touchy slab over the weak facets at all elevations, resulting in many avalanches that could potentially run full path, of which there have been numerous examples.
Strong to extreme wind from the SW on Sunday has re-loaded lee areas with fresh wind slabs that are ripe for human triggering. Give avalanche terrain a wide berth and remember that fracture lines may extend further that you expect.
The new snow has created a touchy slab over the weak facets at all elevations, resulting in many avalanches that could potentially run full path.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Widespread reactive storm slabs have formed from previous heavy snowfall and strong winds overnight! </span><span class="s_2823317B">If triggered they have potential to run full path</span><span class="s_AA239A9B">. Reports came in of whumphing &amp; low elevation slabs releasing below treeline yesterday.
The Jan 25th sun crust is buried down approx 60cm. Previous to the storm it was whumphing, showing easy sudden results and reactive to human triggering. If the storm slab is triggered it has the potential to step down and trigger this layer.
Hard touchy windslab in the alpine and open tree-line features showing very serious potential for wide propagation in connected features.
Avalanches initiated within the storm snow may step down to deeper layers and in some cases gouging to ground in thin snowpack areas.
Strong to extreme winds from the SW have created wind slabs and fragile cornices that are ripe for triggering. Give avalanche terrain a wide berth and remember that fracture lines may extend further that you expect with hard slabs in alpine areas.
The recent snow has created a touchy slab over the weak facets at all elevations. Avalanches that have run full path have been observed in many areas.
Strong to extreme wind on Sunday created wind-slabs and cornices that are ripe for triggering. Slabs are becoming firmer in high start zones. Give avalanche terrain a wide berth as fracture lines may extend further that you expect.
The new snow has created a touchy slab over the weak facets at all elevations. Avalanches could potentially run full path. We are seeing avalanche activity for the first time this season in many different areas.
The storm slab may become more sensitive to human triggering with rising freezing level to 2400m.  The other item to contend with will be the sun's  input on steep solar aspects warming the surface slab.
The Jan 25th sun crust is buried down approx 60cm.  Before last week's storm it was giving easy sudden planar results and was reactive to human triggering.  If the storm slab releases it has the potential to step down to this deeper weak layer.
Steep solar aspects are waking up today with thin surface point releases already being observed in Grizzly Bowl.  A good day to minimize exposure to solar aspects.
Hard touchy windslab in the alpine and open tree-line features showing very serious potential for wide propagation in connected features.
Avalanches initiated within the storm snow may step down to deeper layers and in some cases gouging to ground in thin snowpack areas.
Strong to extreme wind on Sunday created wind-slabs and cornices that are ripe for triggering. Slabs are becoming firmer in high start zones. Give avalanche terrain a wide berth as fracture lines may extend further that you expect.
The new snow has created a touchy slab over the weak facets at all elevations. Avalanches could run full path. We are seeing avalanche activity for the first time this season in many different areas.
Strong to extreme winds from the SW have created wind slabs and fragile cornices that are ripe for triggering. Give avalanche terrain a wide berth and remember that fracture lines may extend further that you expect with hard slabs in alpine areas.
The recent snow has created a touchy slab over the weak facets at all elevations. Avalanches that have run full path have been observed in many areas.
The January 25th sun crust, weak layer is buried down approx 60cm.  Before last week's storm it was giving easy sudden planar results and was reactive to human triggering.  Warming surface layers may reawaken this layer today.
Moderate S-SW winds were moving snow along alpine ridges yesterday. Expect fresh windslab along the immediate lee of alpine wind exposed features.
Hard touchy windslab in the alpine and open tree-line features showing very serious potential for wide propagation in connected features.
Avalanches initiated within the storm snow may step down to deeper layers and in some cases gouging to ground in thin snowpack areas.
Strong to extreme wind on Sunday created wind-slabs and cornices that are ripe for triggering. Slabs are becoming firmer in high start zones. Give avalanche terrain a wide berth as fracture lines may extend further that you expect.
The new snow has created a touchy slab over the weak facets at all elevations. Avalanches could run full path. We are seeing avalanche activity for the first time this season in many different areas.
Strong to extreme winds from the SW have created wind slabs and fragile cornices that are ripe for triggering. Give avalanche terrain a wide berth and remember that fracture lines may extend further that you expect with hard slabs in alpine areas.
The recent snow has created a touchy slab over the weak facets at all elevations. Avalanches that have run full path have been observed in many areas.
While deep Storm Slabs from last weeks heavy snowfall have gained strength, they sit over a facet-crust combo on solar slopes below 2100m, and over facets (slowly strengthening) in sheltered/treed areas. If triggered, these may be destructive.
New snowfall accompanied by Strong SW wind on Thursday through Friday morning could build fresh wind slabs on lee slopes, 15-40cm thick, &amp; more likely to be reactive where they sit over a sun/temperature crust - most likely East &amp; South-East aspects.
Several large avalanches were observed last week, all in the front ranges and/or in windward terrain, where storm snow fell on large facets in a shallow snowpack.
Weak layers in the top meter include sun crust on solar slopes and pockets of surface hoar. Snowpack tests have been finding isolated sudden planar results, making them hard to predict. With the added load of rain/heavy snow they may be more reactive
Moderate S-SW winds continue to load lee slopes in the alpine. They are most likely to exist on N'ly aspects in the alpine where you might be hunting for dry snow. Watch for touchy windslabs along the immediate lee of alpine wind exposed features.
The new snow has buried and is adding to last weekend's windslab in the alpine and open tree-line features.&nbsp; These slabs are showing the potential for wide propagation in connected features.
Avalanches initiated within the storm snow may step down to deeper layers and in some cases gouging to ground in thin snowpack areas.
Fresh Storm Slabs are forming, specifically lee to SW winds. These overlie a widespread, stubborn older slab (70cm thick). This sits on a facet-crust combo on solar aspects below 2100m, and on hollow facets (slowly healing) in sheltered/treed areas.
Several large avalanches have been observed in the front ranges and/or windward terrain, where storm snow fell on shallow facets over ground. Rain on Thursday triggered an avalanche on the basal facets, in a shallow snowpack area Below Treeline.
Fresh snow and moderate SW winds have created touchy windslabs in alpine and open terrain near treeline.
The recent storm snow has created a touchy slab over the weak faceted midpack at all elevations. Avalanches could run full path. Extra caution is warranted until&nbsp; the snowpack has adjusted to this extra load.
Fresh snow and recent wind has created fresh wind slabs in alpine and open terrain near treeline.
The recent snow has created a touchy slab over several weak interfaces in the mid-pack. Avalanches that have run full path have been observed in many areas.
Strong southerly winds (up to 84km/h) blew throughout the overnight period creating touchy wind slabs on northerly aspects and exposed areas above tree line.
Weak layers in the top meter include sun crust on solar slopes and pockets of surface hoar. Snowpack tests show isolated sudden planar results, making them hard to predict. With the added load of rain/heavy snow they may be more reactive.
Fresh snow and recent wind has created fresh wind slabs in alpine and open terrain near treeline,
The recent snow has created a touchy slab over several weak interfaces in the mid-pack. Avalanches that have run full path have been observed in many areas over the past week.
Fresh snow and moderate SW winds have created touchy windslabs in alpine and open terrain near treeline.
The recent storm snow has created a touchy slab over the weak faceted midpack at all elevations. Avalanches on this layer could run full path. Extra caution is warranted until the snowpack has adjusted to this extra load.
Widespread shooting cracks and whumphing was noted by the forecasting team as this layer fails.&nbsp; Especially sensitive in the Portal Creek area.
The new snow has buried and is adding to last weekend's windslab in the alpine and open tree-line features.
Strong southerly winds (up to 84km/h) blew yesterday creating touchy wind slabs on northerly aspects and exposed areas above tree line.
Weak layers in the top meter include sun crust on solar slopes and pockets of surface hoar. Snowpack tests show isolated sudden planar results, making them hard to predict. With the added load of rain/heavy snow they may be more reactive.
There is a thick slab over a structurally weak snowpack at all elevations. Likely areas of triggering would be from thin parts of a slope at treeline and above which can propagate to deeper areas and cause a large avalanche.
Previous fresh snow and moderate SW winds have created windslabs which have been most reactive in alpine areas. 
The recent snow has created a thick slab over several weak interfaces in the mid-pack. Dig down to see how the recent storm snow is bonding to the layer below, and choose conservative terrain features. 
Recent snow and recent wind has created wind slabs in the alpine, which are slowly losing reactivity due to cooler temperatures.
Widespread whumphing and shooting cracks in previously un-skied terrain. Recent natural activity up to Sz 3 failing on the weak faceted snowpack.
25cm HST and moderate SW winds have added to the windslab problem in the alpine and open tree-line features.
A 70cm slab of previous storm snow sits on a crust below 2000m, and/or facets. These are widespread, but hard to trigger. Dig in safe areas on adjacent slopes, do snowpack tests and gain more information, before entering into consequential terrain.
Several large avalanches have been observed in the front ranges and/or windward terrain, where storm snow fell on shallow facets over ground. Rain on Thursday triggered an avalanche on the basal facets, in a shallow snowpack area Below Treeline.
Strong southerly winds from 2 days ago created wind slabs on northerly aspects and exposed areas above tree line. These are settling and bonding to the upper snowpack, but need careful consideration as you first enter the slope at the top.
Weak layers in the top meter include sun crust on solar slopes and pockets of surface hoar. Tests show isolated sudden planar results, making them hard to predict. Be cautious in shallow snowpack areas (ridge-crests) where triggering is more likely.
Widespread whumphing and shooting cracks in previously un-skied terrain. Recent natural activity up to Sz 3 failing on the weak faceted snowpack.
25cm HST and moderate SW winds have added to the windslab problem in the alpine and open tree-line features.
There is a thick slab over a structurally weak snowpack at all elevations. Likely areas of triggering are in thin parts of a slope at tree line and above where a failure can propagate to deeper areas and cause large avalanches.
Winds from several days ago have created firm wind slabs which are now buried. Probe for these especially near ridge crests and in cross loaded features. These are becoming less reactive but should still be part of your decision making process.
A thick slab of more recent snow sits over several weak facet interfaces in the mid and lower snow pack. Dig down to see how the recent snow is bonding to the layer below, and choose conservative terrain features.
Recent snow and wind has created wind slabs in the alpine which are now buried by fresh snow. These are becoming less reactive but should still be on your radar. Probe often to find them, especially near ridge crests and in cross loaded areas.
Strong S winds from several days ago left wind slabs at ridge-top and on exposed alpine features. These are bonding to the upper snowpack but are still reactive on unsupported features. Brief sunny breaks may wake up these slabs on the buried crusts.
Weak layers in the top meter include sun crust on solar slopes and pockets of surface hoar. Tests show isolated sudden planar results, making them hard to predict. Be cautious in shallow snowpack areas (ridge-crests) where triggering is more likely.
There is a thick slab over a structurally weak snowpack at all elevations. Likely areas of triggering are in thin parts of a slope or rocky outcrops at tree line and above where a failure can propagate to deeper areas and cause large avalanches.
Small isolated new wind slabs are present in the alpine. Winds from several days ago have also created firm wind slabs which are now buried. Probe for these buried hard layers especially near ridge crests and in cross loaded features.
A thick slab of more recent snow sits over several weak facet interfaces in the mid and lower snow pack where ever the snowpack is thin. Dig down to see if these facets are present and if so choose conservative terrain features.
Thin wind slabs are present in the alpine due to the fresh snow. There are also buried wind slabs that are becoming less reactive but should still be on your radar. Probe to find them, especially near ridge crests and in cross loaded areas.
Widespread whumphing and shooting cracks in previously un-skied terrain. Recent natural activity up to Sz 3 failing on the weak faceted snowpack.
25cm HST and moderate SW winds have added to the windslab problem in the alpine and open tree-line features.
Last week's strong S winds have left wind slabs at ridge top and on wind exposed terrain. The slabs appear to be bonding to the upper snowpack but may still be reactive on unsupported features. These slabs will be hidden by recent snowfall.
Weak layers in the top meter include sun crusts on S'ly aspects and pockets of surface hoar on N'ly aspects. Field tests show isolated sudden planar results, making the weak layers hard to predict. Be careful in thin snowpack locations.
Widespread whumphing and shooting cracks in previously un-skied terrain. Recent natural activity and remote triggering of this weakness resulted in avalanches up to size 3 failing on the weak faceted snowpack.
Previous 25cm snow and moderate SW winds have added to the windslab problem in the alpine and open tree-line features.
There is a thick slab over a structurally weak snowpack at all elevations. Likely areas of triggering are in thin parts of a slope or rocky outcrops at tree line and above where a failure can propagate to deeper areas and cause large avalanches.
Small isolated new wind slabs are present in the alpine. Winds from several days ago have also created firm wind slabs which are now buried. Probe for these buried hard layers especially near ridge crests and in cross loaded features.
A thick slab of more recent snow sits over several weak facet interfaces in the mid and lower snow pack where ever the snowpack is thin. Dig down to see if these facets are present and if so choose conservative terrain features.
Thin wind slabs are present in the alpine due to the fresh snow. There are also buried wind slabs that are becoming less reactive but should still be on your radar. Probe to find them, especially near ridge crests and in cross loaded areas.
Recent snowfall has been heaviest near the divide and tapers quickly as you move East. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Be extra cautious in areas where the new snow is deepest.
Freshly formed soft windslab can be expected along the immediate lee of ridge lines and alpine cross winded features.
Widespread whumphing and shooting cracks in previously un-skied terrain. Recent natural activity and remote triggering of this weakness resulted in avalanches up to size 3 failing on the weak faceted snowpack. Caution is recommended.
Previous 25cm snow and moderate SW winds have added to the windslab problem in the alpine and open tree-line features.
There is a thick slab over a structurally weak snowpack at all elevations. Likely areas of triggering are in thin parts of a slope or rocky outcrops at tree line and above where a failure can propagate to deeper areas and cause large avalanches.
Small isolated new wind slabs are present in the alpine. Winds from several days ago have also created firm wind slabs which are now buried. Probe for these buried hard layers especially near ridge crests and in cross loaded features.
A thick slab of more recent snow sits over several weak facet interfaces in the mid and lower snow pack where ever the snowpack is thin. Dig down to see if these facets are present and if so choose conservative terrain features.
Thin wind slabs are present in the alpine due to the fresh snow. There are also buried wind slabs that are becoming less reactive but should still be on your radar. Probe to find them, especially near ridge crests and in cross loaded areas.
Freshly formed soft wind slabs can be expected along the immediate lee of ridge lines and alpine cross winded features.
A crust buried last Sunday could act as a bed surface, if slab properties are enabled with daytime heating on solar aspects. Loose dry avalanches are also possible.
Widespread whumphing and shooting cracks in previously un-skied terrain. Recent natural activity and remote triggering of this weakness resulted in avalanches up to size 3 failing on the weak faceted snowpack. Caution is recommended.
Previous 25cm snow and moderate SW winds have added to the windslab problem in the alpine and open tree-line features.
There is a thick slab over a structurally weak snowpack in most areas. Likely areas of triggering are in thin parts of a slope or rocky outcrops at tree line and above. A failure can propagate to deeper areas and cause large avalanches.
A variable snowpack exist ranging from quite strong in the Takakkaw Falls area to somewhat weaker around Emerald Lake. Several weak facet interfaces exist in the mid-pack. Dig down and assess these layers prior to committing to any bigger terrain.
Soft wind slabs can be expected along the immediate lee of ridge lines and alpine cross winded features.
Be conservative with your terrain choices, especially when entering larger, steeper features. Dig down to see where the Jan. weak layer is and how it is reacting locally. We are still unsure about distribution of this layer within the region.
Widespread whumphing and shooting cracks in previously un-skied terrain. Recent natural activity and remote triggering of this weakness resulted in avalanches up to size 3 failing on the weak faceted snowpack. Caution is recommended.
Windslabs have developed and will persist as the weather remains static. Potentially overlying buried surface hoar from Feb 10 so be vigilant particularly in the alpine and open tree-line features.
There is a thick slab over a structurally weak snowpack in most areas. Likely areas of triggering are in thin parts of a slope or rocky outcrops at tree line and above. A failure can propagate to deeper areas and cause large avalanches.
Winds on Saturday will build Wind Slabs lee to Westerly winds. How quickly, and to what extent, is a question of how strong &amp; long the wind blows. There is plenty of snow available for transport - avalanches may be Large.
Visible wind transport observed this morning from an overnight spike in winds has created fresh windslab along the immediate lee of ridge lines and alpine cross loaded features.
Widespread whumphing and shooting cracks in previously un-skied terrain. It seems to be improving but suspect pockets of weakness waiting for the trigger.&nbsp;
The previous windslabs has evolved into a persistent slab buried under 5-10cm of new snow. It potentially overlies a buried surface hoar from Feb 10 but hard to locate. Be vigilant particularly in sheltered spots preserving the buried surface hoar.
There is a thick slab over a structurally weak snowpack in most areas. Likely areas of triggering are in thin parts of a slope or rocky outcrops at tree line and above. A failure can propagate to deeper areas and cause large avalanches.
Gusty west winds on Saturday have created small wind slabs in the alpine with sluffing in steep gullies.
Be conservative with your terrain choices, especially when entering larger, steeper features. Dig down to see where the January weak layer is and how it is reacting locally. We are still unsure about distribution of this layer within the region.
Gusty West winds have been moving the new snow around and creating thin wind slabs at treeline and above. Sluffing in steep gullies was also observed on Saturday.
Moderate winds from the South yesterday have switched to more Northerly this morning.  Expect windslab to be present on both aspects and use caution as you transition to ridge top or mid slope lee features.
New low density snow is sluffing fast in steep unsupported terrain. It has the potential to knock a rider off their feet or push them into a terrain trap.
Whumphing is occurring in un-skied terrain. It seems to be improving but suspect pockets of weakness just waiting for the trigger. Cold temperatures continue to promote facetting.&nbsp;
Persistent slabs are buried under 5-10cm of new snow. It potentially overlies a buried surface hoar from Feb 10 but difficult to locate. Be vigilant particularly in sheltered spots where buried surface hoar may be lurking.
The mid January layer down 50 to 60 cm is a concern above 1700m as the surface crusts dissipate. Dig to test here. In the alpine use caution in shallow areas where the December Facets remain a concern 60cm or less above the ground. Probe to test here
Gusty West winds on Saturday moved around the new snow creating thin wind slabs isolated to the immediate lees.
There is a thick slab over a structurally weak snowpack in most areas. Likely areas of triggering are in thin parts of a slope or rocky outcrops at tree line and above. A failure can propagate to deeper areas and cause large avalanches.
Gusty west winds on Saturday have created small wind slabs in the alpine with sluffing in steep gullies.
Winds mid-week will build fresh Slabs on East facing lees. There is plenty of snow available for transport - avalanches may be Large.
Be cautious as you approach ridges and avoid exposure to run-out zones with cornices above.
Mod winds out of the south and recently out of the north have likely formed wind slabs below ridge crests on all aspects.
Sluffing in top 10-20cm, specific to steep terrain 35-40deg+
There is a thick slab over a structurally weak snowpack in most areas. Avoid thin parts of a slope or rocky outcrops at tree line and above. A failure can propagate to deeper areas and cause large avalanches.
Conditions have improved since last week, and the likelihood of triggering an avalanche is reduced - however, weak layers still exist and entry into any start zone areas should be based upon knowledge of the snowpack conditions on that slope.
Whumphing is occurring in un-skied terrain. It seems to be improving but suspect pockets of weakness just waiting for the trigger. Cold temperatures continue to promote facetting.
Persistent slabs are buried under 5-10cm of new snow. It potentially overlies a buried surface hoar from Feb 10 but difficult to locate. Be vigilant particularly in sheltered spots where buried surface hoar may be lurking.
Recent winds have been shifting from S'ly to N'ly, forming pockets of windslab in unusual places. If triggered they are likely to be small, but occur in the type of terrain where a fall caused by even a small avalanche could have high consequences.
There is a thick slab over a structurally weak snowpack in most areas. Avoid thin parts of a slope or rocky outcrops at tree line and above. A failure can propagate to deeper areas and cause large avalanches.
West wind (mod to strong) and light snowfall amounts will create wind-slabs in lee areas at tree-line and above starting Tuesday evening. There is uncertainty as to how touchy these slabs will be.
Conditions have improved since last week, and the likelihood of triggering an avalanche is reduced - however, weak layers still exist and entry into any start zone areas should be based upon knowledge of the snowpack conditions on that slope.
Light snowfall and an increase in wind from the west is expected to build wind slabs in lee areas at tree line and above. There is uncertainty as to how touchy these slabs will be.
Whumphing is occurring in un-skied terrain. Suspect pockets of weakness just waiting for the trigger particularly shallow spots. Cold temperatures continue to promote facetting weakening an already weak mid pack and base.&nbsp;
Persistent slabs are buried under 10cm of snow. It potentially overlies a buried surface hoar from Feb 10 but it's difficult to locate. Be vigilant particularly in sheltered spots where buried surface hoar may be lurking.
New snow and continued wind-transport have added to the wind slab problem. There have been close calls recently, and although likely to be small, wind slabs are most likely in terrain where a fall caused by an avalanche could have high consequences.
There is a thick slab over a structurally weak snowpack in most areas. Avoid thin parts of a slope or rocky outcrops at tree line and above. A failure can propagate to deeper areas and cause large avalanches.
Conditions have improved since last week, and the likelihood of triggering an avalanche is reduced - however, weak layers still exist and entry into any start zone areas should be based upon knowledge of the snowpack conditions on that slope.
Thin windslabs are building on lee aspects.
Trigger possible from shallow spots.
Persistent slabs are buried under the light snow that has accumulated.&nbsp; Be vigilant particularly in sheltered spots where buried surface hoar may be lurking.
Storm slabs will continue to build through the forecast period.
Now buried, previous soft Wind Slabs may be difficult to detect.
Primarily a concern in steep sheltered terrain.
New snow and continued wind-transport have created storm slabs. In isolate locations, the storm snow conceals existing wind slabs. Ongoing precipitation and wind activity could enable these slabs to step down and trigger deeper instabilities.
With increased load and strong to extreme winds, expect rapid wind loading and failure of new wind slabs. These may be enough of a trigger in certain places to step down to deep persistent layers causing bigger avalanches.
There is a thick slab over a structurally weak snowpack in most areas. Avoid thin parts of a slope or rocky outcrops at tree line and above. We may see increased natural activity through the storm on Friday and Saturday.
In the short term, expect heavy sloughing in alpine gullies and avoid overhead hazard.
Windslabs are building on lee aspects and will increase in reactively throughout the day on Friday.
Trigger possible from shallow spots.
Persistent slabs are buried under the light snow that has accumulated. Be vigilant particularly in sheltered spots where buried surface hoar may exist.
With strong winds and fresh snow, expect new wind slabs to form and fail during the forecast storm. If triggered these may step down to where weaker layers are present, especially at treeline.
Overall there is decent bridging over weaker persistent layers in the alpine, but larger triggers may wake these up. At treeline and below these persistent layers are more prominent and are down 50-70cm. 
In the short term, watch for heavy sloughing in gullies and terrain traps. This could be especially true on the ice climbs around the Field area.
Over 40cm of new snow in the past 3 days has been combined with strong southerly winds to create widespread and touchy storm slabs.  Ongoing precipitation and wind activity could enable these slabs to step down and trigger deeper instabilities.
Loose natural and skier triggered sluffs are almost certain today as snow and wind hammer Rogers Pass. The size, power and hazard posed by these slides depends directly on terrain characteristics like slope angle, terrain traps, and run out hazards.
With strong winds and fresh snow, new wind slabs and sensitive cornices are forming. If triggered these may step down to the deep persisitent layers.
In deeper snowpack areas found in the alpine, there is decent bridging over weaker persistent layers. Use caution in thin areas in the alpine as well as at treeline and below where human triggering remains possible.
In the short term expect loose snow to fail easily in steep terrain. Use caution in confined features or around terrain traps like cliffs. This could be especially true on the ice climbs around the Field area.
New snow and strong SW winds are forming fresh windslabs and sensitive cornices. If these fail they could provide enough of a load to trigger deep persistent layers resulting in large avalanches.
There is a thick slab over a structurally weak snowpack in most areas. Avoid thin parts of a slope or rocky outcrops at tree line and above. We may see increased natural activity through the storm on Friday and Saturday.
Watch for the new snow to fail easily in steep terrain. Use caution in confined features and around terrain traps such as cliffs.
Large volumes of snow are being blown around on Friday as this is written.  Due to Extreme SW winds, the slabs this creates may be lower on the slope than you would usually expect. Don't be surprised! Transition carefully into any open terrain.
In some locations, buried Wind Slabs sit unsteadily on 5-10cm of small facets. There is plenty of uncertainty about where these exist; however, they are most likely at Treeline, and are touchy on steep S and SW aspects where facets overlie a crust.
Reactive storms slabs are building and may be up to 50cm thick by Saturday morning. If triggered these are likely to trigger deeper instabilities producing larger avalanches.
Under the additional load of ongoing snow large avalanches are expected from this layer.
Loose snow avalanche can be expected from all steep rocky features which may then channel into gulleys or trigger deeper avalanches from open slopes.
Over 65cm of new snow in the past 3 days has been combined with strong southerly winds to create widespread and touchy storm slabs. These slabs may step down and trigger deeper instabilities.
Loose natural and skier triggered sluffs are almost certain today as snow and wind hammer Rogers Pass. The size, power and hazard posed by these slides depends directly on terrain characteristics like slope angle, terrain traps, and run out hazards.
45cm of storm snow is forming a soft slab at treeline and above. It will remain very reactive to triggering for the next 24 hours. Where stronger winds in the alpine have transported the snow it may be up to 60cm thick.
Loose snow avalanche can be expected from all steep rocky features which may then channel into gulleys or trigger deeper avalanches from open slopes.
Increased loading above this layer from the recent storm snow has produced number releases up to size 3. These are mostly from the alpine and treeline elevations and are running down to the valley bottoms.
Gusty Southwest winds have been moving the new snow around and sluffing in steep gullies was observed on Saturday. Use caution in confined gullies or above terrain traps.
20-40cm of new snow with moderate to strong winds have formed new winds slabs above treeline and rapid cornice development. Human triggering will be likely for the next day or two.
Be conservative with your terrain choices, especially when entering larger, steeper features. Dig down to see if the January surface hoar or the December facets are present and take appropriate precautions if they are.
20-40cm of new snow and strong SW winds have forming fresh wind slabs and sensitive cornices above treeline. If these fail they could provide enough of a load to trigger deep persistent layers resulting in large avalanches.
There is a thick slab over a structurally weak snowpack in most areas. Avoid thin parts of a slope or rocky outcrops at tree line and above. We are seeing increased natural activity as a result of the new snow including remote triggering.
Watch for the new snow to fail easily in steep terrain. Use caution in confined features and around terrain traps such as cliffs and gullies.
Widespread storm slabs were observed to fail at all elevations yesterday. Treat all slopes that have not failed as suspect. Keep your route to supported terrain with eyes open for natural or human-triggered avalanches.
Plenty of unconsolidated powder is available for sluffing in steep terrain. The deeper the sluff, the more power it contains to push a person into a terrain trap or over cliffs.
Fresh Storm Slabs will likely form this week with snow and moderate wind in the forecast.
New snow may be hiding Wind Slabs formed by previous South West winds. Don't be surprised! Transition carefully into any open terrain.
There is uncertainty about the distribution of this layer, it is suspected to be most reactive at Treeline, on steep S and SW aspects where facets overlie a crust.
40cm of storm snow is forming a soft slab at treeline and above. It will remain reactive to triggering for the next few days. Where stronger winds in the alpine have transported the snow it may be up to 60cm thick.
Increased loading above this layer from the recent storm snow has produced a number of releases up to size 3. These are mostly from the alpine and treeline elevations and are running down to the valley bottoms.
Increased loading on this layer from the recent storm snow has produced a number of releases up to size 3. Triggering is mostly likely from shallower locations around rocky terrain.
20-40cm of new snow has developed a storm slab in the alpine and at tree line, failure of this layer could provide enough of a load to trigger deep persistent layers resulting in large avalanches.
There is a thick slab over a structurally weak snowpack in most areas. Avoid thin parts of a slope or rocky outcrops at tree line and above. We are seeing increased natural activity as a result of the new snow including remote triggering.
20-40cm of new snow has settled into a reactive storm slab. Human triggering will be likely for the next day or two.
Be conservative with your terrain choices, especially when entering larger, steeper features. Dig down to see if the January surface hoar or the December facets are present and take appropriate precautions if they are.
Widespread storm slabs were observed to fail at all elevations yesterday. Treat all slopes that have not failed as suspect. Field teams yesterday noted low elevation slabs below treeline were still reactive aswell.
Strong South winds during the storm creating widespread wind slab in the alpine and fresh cornices at ridgetop.  Exercise caution as you approach ridgetop or convex rolls and be aware of any other groups above you.
40cm of storm snow is forming a soft slab at treeline and above. It will remain reactive to triggering for the next few days. Where stronger winds in the alpine have transported the snow it may be up to 60cm thick.
Increased loading above this layer from the recent storm snow has produced a number of releases up to size 3. These are mostly from the alpine and treeline elevations and are running down to the valley bottoms.
Increased loading on this layer from the recent storm snow has produced a number of releases up to size 3. Triggering is mostly likely from shallower locations around rocky terrain.
A 50 cm slab of storm snow is touchy and very sensitive to triggers. Avoid any avalanche starting zones, as this slab appears to be widespread. Fracture lines have been spreading into adjacent terrain, so mind your exposure carefully.
The entire upper half of the snowpack overlies a structurally weak base. Avoid thin parts of a slope or rocky outcrops at tree line and above. where triggering of this problem is most likely.
A 50 cm slab of storm snow is touchy and very sensitive to triggers. Avoid any avalanche starting zones, as this slab appears to be widespread. Fracture lines have been spreading into adjacent terrain, so mind your exposure carefully.
Several buried persistent weak layers exist in the middle of the snowpack - ensure that you know if they exist or not in your area, and the only way to check for this is to dig a test snow profile, find the layer, then test its strength,.
Widespread storm slabs were observed to fail at all elevations Sunday.  The storm slab needs time to bond to the old snow surface. Features that have not failed should be given a very cautious approach. 
Strong S winds during the storm created widespread wind slab in the alpine and fresh cornice at ridge top. Be vigilant when approaching ridgelines and avoid convex features.
40cm of storm snow is forming a soft slab at treeline and above. It will remain reactive to triggering for the next few days. Where stronger winds in the alpine have transported the snow it may be up to 60cm thick.
Increased loading above this layer from the recent storm snow has produced a number of releases up to size 3. These are mostly from the alpine and treeline elevations and are running down to the valley bottoms.
Increased loading on this layer from the recent storm snow has produced a number of releases up to size 3. Triggering is mostly likely from shallower locations around rocky terrain.
A 50 cm slab of storm snow continues to be reactive. Avoid any avalanche starting zones, as this slab appears to be widespread. Fracture lines have been spreading into adjacent terrain, so mind your exposure carefully.
The entire upper half of the snowpack overlies a structurally weak base. Avoid thin parts of a slope or rocky outcrops at tree line and above. where triggering of this problem is most likely.
A 50 cm storm slab has been very reactive in recent avalanche control . Avoid any avalanche starting zones, as this slab appears to be widespread. Fracture lines have been spreading into adjacent terrain, so mind your exposure carefully.
Several buried persistent weak layers exist in the middle of the snowpack - ensure that you know if they exist or not in your area, and the only way to check for this is to dig a test snow profile, find the layer, then test its strength,.
Storm slab formation has been widespread and through all elevations. However its susceptibility to human triggering is highly variable. The bond to the old snow surface of crusts and facets is questionable.
Moderate to strong S winds have continued to transport snow at upper elevations forming soft slabs along the immediate lee of ridges and cross winded features.  These may be sensitive to human triggering.
45cm of storm snow from March 3 has evolved into a soft slab and melded in many locations to the midpack below. South TL aspects the new snow was found resting on a decomposing surface hoar layer on a crust about 30cm down. It tested unstable.
March 3rd 45cm of new snow load produced size 3's. This activity has subsided. They were from the alpine and treeline elevations running to valley bottoms. One should consider it a concern if the persistent slab above is initiated and steps down. 
A 50 - 60 cm slab of storm snow continues to be reactive and is widespread at upper elevations. Fracture lines have been spreading into adjacent terrain, so mind your exposure carefully.
The entire upper half of the snowpack overlies a structurally weak base. Avoid thin parts of a slope or rocky outcrops at tree line and above. where triggering of this problem is most likely.
A 50 - 60 cm storm slab has been very reactive in recent avalanche control, and this slab appears to be widespread. Fracture lines have been spreading into adjacent terrain, so mind your exposure carefully.
Several buried weak layers in the middle of the snowpack are gaining strength over time as they become bridged, especially in the deeper areas closer to the Wapta.  Dig down to see if they are present on your line, and how they are reacting.
Storm Slabs exist on Thursday, but will grow in size and sensitivity on Friday, and will remain primed for human triggering on Saturday. Pay special attention to slopes lee to SW winds - these winds will build touchy slabs on lee slopes.
Moderate to strong S winds transported snow at upper elevations forming soft slabs along the immediate lee of ridges and cross winded features. Skiers were able to trigger wind slabs on immediate lee features yesterday.
Buried crusts on solar aspects are hidden under the march snow. A snow profile yesterday on a south aspect showed the storm snow bonding to the crust, however skiers were able to trigger slab avalanches on this layer earlier in the week.
50cm of dry snow from the past week is being blown into cohesive windslabs at higher elevations. Expect these to react easily to triggers, and keep your distance from avalanche starting zones. We have seen long propagations up to 400m this past week.
The entire snowpack is built upon a structurally weak base, which produces very large avalanches when triggered. There is tremendous uncertainty with this sort of condition, and the only way to hedge against it is to avoid the big avalanche terrain.
60cm of dry snow from the past week is being blown into cohesive windslabs at higher elevations. Expect these to react easily to triggers, and keep your distance from avalanche starting zones. We have seen long propagations up to 400m this past week.
45cm of storm snow from March 3 has evolved into a soft slab and melded in many locations to the midpack below. South TL aspects the new snow was found resting on a decomposing surface hoar layer on a crust about 30cm down. It tested unstable.
March 3rd 45cm of new snow load produced size 3's. This activity has subsided. They were from the alpine and treeline elevations running to valley bottoms. One should consider it a concern if the persistent slab is initiated and steps down.
Incremental loading this week + 15cm of new snow last night and warming temps today is producing a touchy storm. This storm slab can step down to deeper layers and run full path, which has already occurred this am in the HWY corridor!</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Buried crusts on solar aspects are hidden under the march snow. Skiers were able to trigger slab avalanches on this layer earlier in the week and yesterday.
50cm of dry snow from the past week is being blown into cohesive windslabs at higher elevations. Expect these to react easily to triggers, and keep your distance from avalanche starting zones. We have seen long propagations up to 400m this past week.
The entire snowpack is built upon a structurally weak base, which produces very large avalanches when triggered. There is tremendous uncertainty with this sort of condition, and the only way to hedge against it is to avoid the big avalanche terrain.
SE winds are creating slab on lee aspects and firming it up on windward aspects. March 3rds 45cm of low density snow is available for transport. It may be overtop a decomposed SH layer on CR 30cm down on South TL aspects.&nbsp;
Persistent mid-pack slab condition has been developing all season. Various wind and facet layers exist. Spatial variability exists with thick and thin snowpack areas.  </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Natural activity has subsided but don't let your guard down. It remains a major concern with a extremely weak base of depth hoar. Trigger spots would be shallow zones or a step down effect if upper layers are initiated.
60cm of dry snow from the past week is being blown into cohesive windslabs at higher elevations. Expect these to react easily to triggers, and keep your distance from avalanche starting zones. We have seen long propagations up to 400m this past week.
Storm Slabs will be touchy. Pay special attention to Treeline and Alpine slopes lee to SW winds - slabs will continue to grow on these slopes. Avoid steep slopes where wind transported snow is being deposited.
There is uncertainty about the distribution of this layer, it is suspected to be most reactive at Treeline, on steep S and SW aspects where facets overlie a crust.
Steady snowfall this week (+15cm of new snow again last night) and warming temps today have produced a touchy storm. Yesterday this storm slab was able to step down to deeper layers and ran full path.
Buried crusts on South and West aspects are hidden under the march snow. Skiers were able to trigger slab avalanches on this layer earlier in the week.&nbsp; Take time to assess the how the snow is bonding when moving onto solar aspects
50-60cm of dry snow from the past week is being blown into cohesive wind slabs at higher elevations. Warmer temperatures will help settle these out and become less reactive, but it may take a few days for the snowpack to fully adjust to the new load.
The entire snowpack is built upon a structurally weak base, which produces very large avalanches when triggered. There is tremendous uncertainty with this sort of condition, and the only way to hedge against it is to avoid the big avalanche terrain.
Many observations of new cornices formed this week failing as temperatures rise with wide propagations of up to 300m. In some cases this has triggered slabs below and caused larger avalanches. Expect the same for Sunday.&nbsp;
S-ly winds are creating slab on lee aspects and firming it up on windward aspects. Trigger and you're very likely to initiate deeper instabilities and really wreak your day.
Persistent mid-pack slab condition continuing to surprise, and not the good kind of surprise! Like triggering an unseen overhead feature; Surprise!
Natural activity has subsided but don't let your guard down. It remains a major concern with a extremely weak base of depth hoar. Trigger spots would be shallow zones or a step down effect if upper layers are initiated.
60-70cm of dry snow from the past week has been blown into cohesive wind slabs at higher elevations. These are losing sensitivity, but the snowpack will take a few days to fully adjust to the load.
Many cornice failures observed Saturday from warming temperatures. Some of these were pulling out slabs below to cause larger avalanches.&nbsp; Expect the same for Sunday.
Steady snowfall this week (70cm in 3 days) and warming temps today have produced a touchy storm. Yesterday this storm slab was able to step down to deeper layers and ran full path.
Buried crusts on South and West aspects are hidden under the March snow. Skiers were able to trigger slab avalanches on this layer earlier in the week. Recent storm snow has a high potential to dig down and trigger these deeper slabs.
Warm temperatures, moderate to strong southerly winds, and plenty of snow for transport are building large cornices at ridge-top. The fresh cornices will be very fragile and could trigger deep slabs.
60-80cm of dry snow from the past week is being blown into cohesive wind slabs at higher elevations. Warmer temperatures will help settle these out and become less reactive, but it may take a few days for the snowpack to fully adjust to the new load.
The entire snowpack is built upon a structurally weak base, which can produce very large avalanches. Recently, large deep persistent slabs have been observed, suggesting that likelihood of triggering is increasing.
SW winds creating slabs on lee and pressing snow on windward aspects. May be overtop decomposed SH layer on CR 30cm down on South TL aspects.
Natural activity has subsided but don't let your guard down. It remains a major concern with a extremely weak base of depth hoar. Trigger spots would be shallow zones or a step down effect if upper layers are initiated.
Persistent mid-pack slab condition continuing to surprise but not the good kind of surprise! Like triggering an unseen overhead feature; Surprise!
Significant snowfall accumulations from the past month are currently stressing the middle and lower snowpack.  Persistent weak layers will be further tested as the temperatures rise in to the middle of the week.
60-70cm of dry snow from the past week has been blown into cohesive wind slabs at higher elevations. These windslabs have potential to be touchy in places.
Steady snowfall this week (70cm in 3 days) and warming temps today have produced a touchy storm. Yesterday this storm slab was very reactive and resulted in numerous full path avalanches.
Buried crusts on South and West aspects are hidden under the March snow. Skiers were able to trigger slab avalanches on this layer earlier in the week. Recent storm snow has a high potential to dig down and trigger these deeper slabs.
A 40-50cm cohesive windslab exists at higher elevations, and in specific wind effected areas near treeline. This slab reacts easily to tests and its expected that skiers could trigger it.
The entire snowpack is built upon a structurally weak base, which can produce very large avalanches. Recently, large deep persistent slabs have been observed. This situation will be slow to improve.
A 40-50cm cohesive windslab exists at higher elevations, and in specific wind effected areas near treeline. This slab reacts easily to tests and its expected that skiers could trigger it.
Expect an increase in loose wet surface avalanches particularly when the sun comes out, temperatures remain warm, or rain occurs. Rising freezing levels will increase this danger at all elevations. Use caution around terrain traps.
SW winds creating slabs on lee and pressing snow on windward aspects. May be overtop decomposed SH layer on CR 30cm down on South TL aspects.
Natural activity has subsided but don't let your guard down. It remains a major concern with a extremely weak base of depth hoar. Trigger spots would be shallow zones or a step down effect if upper layers are initiated.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> 80cm of recent snowfall and warming temps yesterday and today are forming a </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/20170313%20Mounds.JPG" target="_blank"><span class="s_9255B882">reactive storm slab</span></a><span class="s_AA239A9B">. Numerous full path avalanches have occurred in the last 48hrs.
Buried crusts on solar aspects are hidden under our recent storm snow. Skiers were able to trigger slab avalanches on this layer earlier in the week. Avalanches triggered in the storm snow have a high probability to overload this layer.
The entire snowpack is built upon a structurally weak base, which is producing very large avalanches. Large deep persistent slabs have been observed on Tuesday and some are running into the valley bottom.
A 40-50cm cohesive windslab exists at higher elevations, and in wind effected areas near treeline. This slab reacts easily to tests and is producing avalanches now.
A 40-50cm cohesive windslab exists at higher elevations, and in specific wind effected areas near treeline. This slab reacts easily to tests and is producing avalanches on Tuesday.
Expect an increase in loose surface avalanches particularly as more snow is arriving and rain in valley. Once storm passes, it will become active particularly when the sun comes out. Use caution around terrain traps.
SW winds creating slabs on lee and pressing snow on windward aspects. May be overtop decomposed SH layer on CR 30cm down on South TL aspects.
Natural activity expected and will be a major concern with the extremely weak base of depth hoar. Trigger spots would be shallow zones or a step down effect if upper layers are initiated.
Old storm slabs were settling before Tuesdays precipitation, but increased load from further loading means it is worthwhile digging to test this slab. New snowfall with SW wind &amp; warm temps will create fresh, reactive storm slabs on lee slopes.
Significant ongoing snowfall accumulations, combined with sustained warm temperatures are currently stressing facets in the lower snowpack, and a crust in the mid snowpack.
The recent storm snow is rapidly settling into a touchy storm slab, sensitive to both natural and human triggering. The slabs may be more touchy on recently loaded lee features.
Several persistent weak layers are in the upper snowpack. There is step down potential for storm slab releases to dig down to these layers resulting in large dangerous avalanches.
The entire snowpack is built upon a structurally weak base, which is producing very large avalanches. Large deep persistent slabs have been observed and some are running into the valley bottom.
A 40-50cm cohesive windslab exists at higher elevations, and in wind effected areas near treeline. This slab reacts easily to tests and continues to produce avalanches
Up to 20cm has fallen in the past 24hrs and is bonding poorly to last weeks snow. Soft slabs up to size 2 have been running to the valley bottom and in some cases are believed to trigger deeper releases.
With additional snow loading, rain  and warm temperatures this problem has become reactive producing full path releases 
A 40-50cm cohesive windslab exists at higher elevations, and in specific wind effected areas near treeline. This slab reacts easily to tests and is producing avalanches.
Substantial snow and rain fell over the last 6 days! Rain on new snow then more new snow is a perfect combination for avalanches! Once commenced these storm slabs can step down to deeper layers in the snow pack, resulting in full depth avalanches.
Rain soaked snow yesterday will have penetrated deep into the snowpack, lubricating the deeper persistent layers of concern. As the storm slabs fail above these layers it will easily step down to the Feb 28th interface and deeper.
The entire snowpack is built upon a structurally weak base, which has been overloaded by new snow and previous rain.  Large deep persistent slabs have been observed and are running well into avalanche runouts.
Wind slabs over 1m deep exist at higher elevations, and in wind effected areas near treeline. This slab reacts easily to tests and continues to produce avalanches
In the short term with this much snow hanging around sluffing in steep terrain and gullies will be occurring. 
Several buried weak layers in the middle of the snowpack are being reactive again during this avalanche cycle. Avoid avalanche terrain now.
Wind slabs up to 1meter deep exists at higher elevations, and in specific wind effected areas near treeline. Expect these to continue growing with additional inputs.
With all the new snow kicking around gullies and steep terrain will be sluffing over the short term.
New snowfall with SW wind &amp; warm temps will create fresh, reactive storm slabs on lee slopes. Expect these avalanches to be largest near the divide, including Cameron Lake area.&nbsp; Heavy snowfall is possible in Western areas on Saturday.
Significant ongoing snowfall accumulations, combined with sustained warm temperatures are currently stressing facets in the lower snowpack, and a crust in the mid snowpack.
Up to 20cm has fallen in the past 24hrs and is bonding poorly to last weeks snow. Soft slabs up to size 2 have been running to the valley bottom and in some cases are believed to trigger deeper releases.
Additional loading on a weak base is producing large natural avalanches.
Heavy precipitation combined with wind and warm temperatures have formed reactive storm slabs at all elevations. Although natural avalanche activity has subsided, these slabs remain triggerable by human loads!
Persistent deep layers made a triumphant return during our most recent avalanche cycle and they remain a cause for concern. As surface instabilities fail, avalanches can easily step down weak layers from late February.
The entire snowpack is built upon a structurally weak base, which has been overloaded by new snow and previous rain. This problem will remain touchy with the next incoming storm Saturday.
Wind slabs over 1m deep exist at higher elevations, and in wind effected areas near treeline. This slab reacts easily to tests and continues to produce avalanches
Several buried weak layers in the middle of the snowpack have become reactive again this week and should remain that way through this weekend.  Once triggered, these will be very large in magnitude. 
Wind slabs up to 1 meter deep exist at higher elevations, and in specific wind effected areas near treeline. Expect these to continue growing with additional inputs.
40cm of storm snow over the week has formed a dangerous windslab. Wide crowns up to 2m deep have been seen from Maligne to Parkers area. Strong to extreme SW winds and warm temps will keep this layer very active.
The widespread observations of large and deep avalanches indicates strongly that many of these events are from this instability. Increased loading and warm temperatures will keep this layer active.
Heavy precipitation combined with wind and warm temperatures have formed reactive storm slabs at all elevations. Added snowfall from last night and today will see these slabs become more active once again.
Arial';font-style: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><a href="https://www.facebook.com/ParksMountainSafety/photos/a.1122932427756745.1073741905.145133538869977/1250972184952768/?type=3&amp;theater" target="_blank"><span class="s_9255B882">Persistent deep layers</span></a><span class="s_AA239A9B"> made a triumphant return during our most recent avalanche cycle and they remain a cause for concern. As surface instabilities fail, avalanches can easily step down to weak layers from late February.
40cm of storm snow over the week has formed a dangerous windslab. Wide crowns up to 2m deep have been seen from Maligne to Parkers area. Strong to extreme SW winds and warm temps will keep this layer very active.
The widespread observations of large and deep avalanches indicates strongly that many of these events are from this instability. Increased loading and warm temperatures will keep this layer active.
The entire snowpack is built upon a structurally weak base, which has been overloaded by new snow and previous rain. Large avalanches are reaching historical run outs and crossing cross country ski trails.
Wind slabs over 1m deep exist at higher elevations, and in wind effected areas near treeline. This slab reacts easily to tests and continues to produce avalanches. Correspondingly cornices have grown significantly and are fragile.
Several buried weak layers in the middle of the snowpack have become reactive again this week and should remain that way through this weekend. Once triggered, these will be very large in magnitude.
Wind slabs over 1m deep exist at higher elevations, and in wind effected areas near treeline. This slab reacts easily to tests and continues to produce avalanches. Correspondingly, cornices have grown significantly and are fragile.
New snowfall with SW wind &amp; warm temps has created fresh, reactive storm slabs on lee slopes. Expect these avalanches to be largest near the divide, including Cameron Lake area.
Recent warm temperatures &amp; heavy snowfall has added stress to facets in the lower snowpack, and a crust in the mid snowpack that may have overlying facets in isolated areas. It will take days for temperatures to cool deep within the snowpack.
Heavy snowfall and extreme SW winds formed reactive storm slabs at tree-line and alpine elevations. These overlie various weak interfaces in the upper snowpack and need time to readjust to the new load.
Arial';font-style: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><a href="https://www.facebook.com/ParksMountainSafety/photos/a.1122932427756745.1073741905.145133538869977/1250972184952768/?type=3&amp;theater" target="_blank"><span class="s_9255B882">Persistent deep layers</span></a><span class="s_AA239A9B"> made a triumphant return during our most recent avalanche cycle and they remain a cause for concern. As surface instabilities fail, avalanches can easily step down to weak layers from late February, or deeper in shallow areas.
The week's worth of warm snow with constant SW winds has built up some very large cornices along ridge-tops. These beasts should be considered fragile and they would be a HUGE trigger to start a large avalanche.
50+cm of storm snow over the week has formed a dangerous windslab. Wide crowns up to 2m deep have been seen from Maligne to Parkers area. Moderate to strong SW winds and warm temps will keep this layer very active.
The widespread observations of large and deep avalanches indicates strongly that many of these events are from this instability. Increased loading and warm temperatures will keep this layer active.
The entire snowpack is built upon a structurally weak base, which has been overloaded by new snow and previous rain. Large avalanches are reaching historical run outs and crossing cross country ski trails.
Wind slabs over 1m deep exist at higher elevations, and in wind affected areas near treeline. This slab reacts easily to tests and continues to produce avalanches. Correspondingly, cornices have grown significantly and are fragile.
Several buried weak layers in the middle of the snowpack have become reactive again as they have been overloaded by recent snow and rain. Large avalanches are reaching historical run outs and crossing cross country ski trails.
Wind slabs over 1m deep exist at higher elevations and in wind affected areas near treeline. These slabs react easily to tests and continues to produce avalanches. Correspondingly, cornices have grown significantly and are fragile.
ont-weight: bold;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">Heavy snowfall and extreme SW winds formed reactive storm slabs at tree-line and alpine elevations. These overlie various weak interfaces in the upper snowpack and need time to readjust to the new load. </span><span class="s_2823317B">Strong solar warming</span><span class="s_AA239A9B"> today will test this slab.
Arial';font-style: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><a href="https://www.facebook.com/ParksMountainSafety/photos/a.1122932427756745.1073741905.145133538869977/1250972184952768/?type=3&amp;theater" target="_blank"><span class="s_9255B882">Persistent deep layers</span></a><span class="s_AA239A9B"> made a triumphant return during our most recent avalanche cycle and they remain a cause for concern. As surface slabs fail, avalanches can easily step down to weak layers from late February, or deeper in shallow areas.
Abundant warm snow with constant SW winds has built up some very large cornices along ridge-tops. These beasts are fragile, HUGE triggers with the potential to start large avalanches. They will become even more fragile with solar warming today.
The entire snowpack is built upon a structurally weak base of facets. Large avalanches are reaching historical run outs and crossing valley bottom trails. Avoid exposure to overhead hazard and stick to moderate angled supported terrain.
Wind slabs over 1m deep exist at higher elevations, and on ridges near tree line. This slab is still reactive in tests and can produce avalanches. Cornices have also grown significantly and are fragile. Avoid all areas with recent wind effect.
Several buried weak layers in the middle and lower parts of the snowpack have become reactive again as they have been overloaded by recent snow and rain. Large avalanches are reaching historical run outs and crossing valley bottom trails.
Wind slabs over 1m deep exist at higher elevations and at ridge crests near tree line. These slabs are still reactive in tests and could produce avalanches. Cornices have also grown significantly and are fragile. Avoid areas with wind effect.
60cm of storm snow over the week has formed a dangerous windslab. Wide crowns up to 2m and a km long have been seen across the range. In shallow areas several of these stepped to ground. All are running a long way into the valley.
Large cornices on lee features some visibility detaching. Those that have released are triggering large avalanches from alpine terrain
The widespread observations of large and deep avalanches indicates strongly that many of the weekends avalanches went on this layer particularly where the snowpack is shallow and in rocky start zones.
It will take time for the storm slabs to stabilize. Snowpack tests in the region yesterday show that it is still reactive, and N'ly winds overnight will have reverse loaded lee slopes potentially re-awakening slabs in those areas.
It is an impressive and humbling time to be traveling in the back-country. Very large avalanches have been occurring, even logging mature timber. The scary thing is, these large avalanches continue to occur sporadically and are very hard to predict.
Lots of snow combined with strong winds rapidly added to cornices. Cornice failures continue to be observed daily, and have been the trigger for many large deep avalanches.
60cm of storm snow over the past week has formed a dangerous windslab. Wide crowns up to 2m and a km long have been seen across the range. In shallow areas several of these stepped to ground. All are running a long way into the valley.
Large cornices on lee features some visibility detaching. Those that have released are triggering large avalanches from alpine terrain
The widespread observations of large and deep avalanches indicates strongly that many of the weekends avalanches went on this layer particularly where the snowpack is shallow and in rocky start zones.
The entire snowpack is built upon a structurally weak base of facets. Large avalanches are reaching historical run outs and crossing valley bottom trails. Avoid exposure to overhead hazard and stick to moderate angled supported terrain.
Wind slabs over 1m deep exist at higher elevations, and on ridges near tree line. This slab is still reactive in tests and can produce avalanches. Cornices have also grown significantly and are fragile. Avoid all areas with recent wind effect.
Several buried weak layers in the middle and lower parts of the snowpack have become reactive again as they have been overloaded by recent snow and rain. Large avalanches are reaching historical run outs and crossing valley bottom trails.
Wind slabs over 1m deep exist at higher elevations and at ridge crests near tree line. These slabs are still reactive in tests and could produce avalanches. Cornices have also grown significantly and are fragile. Avoid areas with wind effect.
These still exist in steep Alpine terrain, on lee aspects away from the wind, where warm heavy snow on Saturday fell on colder snow below. These are largest along the borders of Montana and BC (blame them!), as snowfall was heaviest in the West.
A crust down 1m (to Treeline, and higher on solar aspects) and Facets in the bottom 1/3rd of the snowpack, are slowly adjusting to recent heavy loading. Human triggering of large, destructive avalanches remains Possible, in the wrong terrain.
With a lot of new snow available for transport and winds shifting directions, expect wind-slabs to have formed in many areas. If triggered they may step down to deeper layers. Overloaded cornices have been failing and triggering very large avalanches
It is an impressive and humbling time to be traveling in the back-country. Very large avalanches have been occurring, even logging mature timber. These large avalanches continue to occur sporadically and are very hard to predict.
60cm of storm snow over the past week has formed a dangerous and unpredictable windslab. Crowns up to 2m deep and a km long have been seen. Several of these stepped to ground and ran into the valley.
Large cornices on lee features with some visibly detached. Those that may release would likely trigger a large avalanche. Give them a wide berth.
The widespread observations and explosive work creating large and deep avalanches indicates that many went on this deep layer particularly where the snowpack is shallow and in rocky start zones. Involvement in one would be fatal consequences.
Large avalanches continue to run to the valley bottoms and cross popular trails. We show this problem as being below treeline not because you can trigger an avalanche, but because you can be hit by one from above.&nbsp; Watch out for overhead hazard!
Wind loading was occurring through the day on Wednesday, and we expect fresh windslabs to be forming at higher elevations. Some speculate that today's wind loading was the trigger for a very large avalanche near Bow Hut.
Several buried weak layers in the middle and lower parts of the snowpack have become reactive again as they have been overloaded by recent snow and rain. Large avalanches are reaching historical run outs and crossing valley bottom trails.
Wind slabs over 1m deep exist at higher elevations and at ridge crests near tree line. These slabs are still reactive in tests and could produce avalanches. Cornices have also grown significantly and are fragile. Avoid areas with wind effect.
Strong winds overnight have continued to transport new snow to lee features above treeline. Newly formed wind slabs may be poorly bonded to last week's storm snow and may step down to deeper layers if triggered. 
The month of March has been characterized by heavy loading of new snow and rain. These events have created an instable snowpack that is verging on a tipping point. Deep weak layers have been failing sporadically leading to large avalanches.
Large cornices on lee features with some visibly detached. Those that may release would likely trigger a large avalanche. Give them a wide berth.
Significant snow is available for transport at treeline and above as witnessed at the Icefields today.&nbsp; Avalanche to size 2.5 have been observed and may step down to deeper layers&nbsp; running far into the valley below. Bonding appears to be improving.
The lower snowpack is riddled with weaknesses particularly where the&nbsp; snow&nbsp; is shallow over rocky terrain.&nbsp; Today a&nbsp; large cornice failure triggered a size 3 slab on a NE treeline feature. Debris is running far into the valley bottom.
Recent winds overnight have formed isolated wind slabs on lee features above treeline. Wind slabs may be poorly bonded to last week's storm snow and may step down to deeper layers if triggered.
The month of March has been characterized by heavy loading of new snow and rain.  After an intense avalanche cycle, the snow pack is still stabilizing. Deep weak layers have been failing sporadically leading to large avalanches.
Natural activity is starting to taper, but the snowpack is still very weak. Most days this week, we have seen large avalanches running to valley bottom on this layer. Don't expose yourself to any avalanche terrain that hasn't recently avalanched.
Wind loading was occurring through the day on Thursday, and fresh windslabs have formed at higher elevations. These windslabs are easy to trigger and will likely be enough load to trigger a larger avalanche.
Several buried weak layers in the middle and lower parts of the snowpack have been reactive in the last week as they were overloaded by snow and rain. Many large avalanches have run to historical run outs and crossed valley bottom trails.
Moderate to strong winds SW and W winds over the last 24 hours are adding to the cornices and load on alpine slopes. These fresh windslabs have been touchy in immediate lees and could be the trigger needed for a bigger avalanche.
Natural activity is starting to taper, but the snowpack is considered very suspect right now. Large avalanches initiating TL and above have recently run to valley bottom with crowns up to 2m + deep and several hundred meters in length.
Wind transport was significant Thursday and has continued to a lesser extent Friday. Expect the fresh slabs that have formed at higher elevations to be easy to trigger. Expect the new growth on cornices to be fragile.
Natural activity is starting to taper, but the snowpack is considered very suspect right now. Large avalanches initiating TL and above have recently run to valley bottom with crowns up to 2m + deep and several hundred meters in length.
Wind transport was significant Thursday and has continued to a lesser extent Friday. Expect the fresh slabs that have formed at higher elevations to be easy to trigger. Expect the new growth on cornices to be fragile.
Large cornices on lee features with some visibly detached and looking precarious. Those that have released are triggering large avalanches from alpine terrain. Give them a wide berth.
The lower snowpack is weak with a crust from November surrounded by loose facets and depth hoar. This weakness is most developed in shallow snow with rocky terrain. A cornice failure triggered a size 3 on a NE treeline feature near Parkers ridge.
Snow is being transported at treeline and above. Slabs exist near ridge tops and open treeline spots. Avalanches to size 2.5 have been observed. Lower elevation features such as glacial moraines have slid to size 2 in isolated areas.
A crust down 1m (up to Treeline, and higher on solar aspects), and Facets in the bottom 1/3rd of the snowpack, are persisting as weak layers to be respected. These could be triggered by cornice falls, or by human triggered in isolated areas.
Pockets of Wind Slab can be found in the Alpine and at Treeline. Due to Extreme, gusty winds these may be lower on the slope than you expect. New snow and wind on Friday night will hide the old windslabs, and create reactive new wind slabs.
Moderate winds and 10-15 cm of new snow have formed isolated wind slabs on lee features above treeline. Wind slabs may be poorly bonded to last week's storm snow and may step down to deeper layers if triggered.
The month of March has been characterized by heavy loading of new snow and rain. After an intense avalanche cycle, the snow pack is still stabilizing. Deep weak layers have been failing sporadically leading to large avalanches.
Natural activity has decreased, but the snowpack is considered very suspect right now. Large avalanches initiating TL and above have recently run to valley bottom with crowns up to 2m + deep. Suspect increase reactive with solar inputs.
Wind transport continues to load lees features. Expect the fresh slabs that have formed at higher elevations to be easy to trigger. Expect the new growth on cornices to be fragile.
Natural activity is starting to taper, but the snowpack is considered very suspect right now. Large avalanches initiating TL and above have recently run to valley bottom with crowns up to 2m + deep and several hundred meters in length.
Wind transport was significant Thursday and has continued to a lesser extent Friday. Expect the fresh slabs that have formed at higher elevations to be easy to trigger. Expect the new growth on cornices to be fragile.
The deep persistent slab can be triggered by travelers from shallow or weak locations or naturally from large loads such as cornice failure or windslab avalanches.&nbsp; On Mar 25, skiers triggered a sz 3 on this layer.
Windslabs exist at treeline and above on lee aspects. No recent natural activity has been observed however human triggering is possible.
Large cornices on ridge top lee features.&nbsp; Recent cornice failure has triggered large avalanches from alpine terrain.
Moderate winds and 10-15 cm of new snow have formed isolated wind slabs on lee features in the alpine. Wind slabs may be poorly bonded to last week's storm snow and may step down to deeper layers if triggered.
The month of March has been characterized by heavy loading of new snow and rain. After an intense avalanche cycle, the snow pack is still stabilizing. Deep weak layers have been failing sporadically leading to large avalanches.
Windslabs building at treeline and above on lee aspects and while thin on Sunday afternoon, it is sensitive to triggering.
The deep persistent slab can be triggered by travelers from shallow or weak locations or naturally from large loads such as cornice failure or windslab avalanches. On Mar 25, skiers triggered a sz 3 on this layer.
Large cornices on ridge top lee features. Recent cornice failure has triggered large avalanches from alpine terrain.
Natural activity has decreased, but the snowpack has a weak base and is still very suspect right now. Any avalanche triggered on this deep facet layer will be large. Large avalanches initiating in the alpine have recently run to valley bottom.
Wind transport continues near ridge crests in the alpine and the new growth on cornices appears to be quite fragile. Avoid areas with recent wind loading and terrain threatened by cornices.
Natural activity is starting to taper, but the snowpack is considered very suspect right now. Large avalanches initiating TL and above have recently run to valley bottom with crowns up to 2m + deep and several hundred meters in length.
Wind transport has continued at ridge crests creating wind slabs in immediate lee ares and new fragile growth on cornices. Avoid areas with fresh wind slabs or with cornice hazard overhead.
Building windslab at tree line and above on lee aspects. It's a continuous problem that requires constant attention in order to ensure your safety and/or riding quality. 
The deep persistent slab can be triggered by travelers from shallow or weak locations or naturally from large loads such as cornice failure or windslab avalanches. On Mar 25, skiers triggered a sz 2.5 in a consistently shallow area at tree line.
Large cornices on ridge top lee features. Their sheer mass is a problem. Recent cornice failures have been generally small (a few tons or so;) but are consistently triggering large deep persistent slab avalanches in alpine terrain.
The snowpack is stabilizing after last week's cycle, and now we are left with a classic low probability, high consequence problem. Natural avalanches have mostly ceased, but triggering is still possible - especially from large loads like cornices.
There has been an increasing frequency of cornice failures this past week. Be wary of this as we transition into spring (cornice season). They are a hazard underfoot on ridge crests, and from overhead if you travel below one. GIve them a wide berth.
Natural activity has decreased, but the snowpack has a weak base and remains quite suspect. Continue to approach avalanche terrain with suspicion and avoid most large slopes steep enough to slide. Human triggering remains likely in specific areas.
There has been an increasing frequency of cornice failures this past week. Be wary of this as we transition into spring (cornice season). They are a hazard underfoot on ridge crests, and from overhead if you travel below one. GIve them a wide berth.
Facets in the bottom 1/3rd of the snowpack are persisting as a weak layer to be respected. These could easily be triggered by cornice falls, or by the weight of a person in isolated areas.
Pockets of Wind Slab can be found in lee areas in the Alpine and at Treeline. Further wind slab development is expected on Wednesday, with wind and snow in the forecast.
Cornices are very large right now and can fail unpredictably - if this happens persistent weak layers deep in the snowpack can be triggered, resulting in very large avalanches.
Natural activity has decreased, but the snowpack has a weak base and remains quite suspect. Continue to approach avalanche terrain with suspicion and avoid most large slopes steep enough to slide. Human triggering remains likely in specific areas.
There has been an increasing frequency of cornice failures this past week. Be wary of this as we transition into spring (cornice season). They are a hazard underfoot on ridge crests, and from overhead if you travel below one. GIve them a wide berth.
New snow and strong West wind will create soft wind slabs in the alpine. The touchiness of the windslabs is uncertain as of Tuesday afternoon.
Building windslab at tree line and above on lee aspects. It's a continuous problem that requires constant attention in order to ensure your safety and riding quality.
Large cornices on ridge top lee features. Their sheer mass is a problem. Recent cornice failures have been generally small (a few tons or so;) but are consistently triggering large deep persistent slab avalanches in alpine terrain.
The deep persistent slab can be triggered by travelers from shallow or weak locations or naturally from large loads such as cornice failure or windslab avalanches. On Mar 25, skiers triggered a sz 2.5 in a consistently shallow area at tree line.
The snowpack is stabilizing after last week's cycle, and now we are left with a classic low probability, high consequence problem. Natural avalanches have mostly ceased, but triggering is still possible - especially from large loads like cornices.
There has been an increasing frequency of cornice failures this past week. Be wary of this as we transition into spring (cornice season). They are a hazard underfoot on ridge crests, and from overhead if you travel below one. GIve them a wide berth.
New snow and strong West wind will create windslabs at high elevations. The touchiness of the wind slabs is uncertain as of Tuesday afternoon.
Lots of uncertainty in the alpine currently with limited field observations. We should apply a significant margin of safety when assessing terrain, giving convexities and tension areas of the snow pack a wide berth.
Cornices are very large right now and can fail unpredictably - if this happens persistent weak layers deep in the snowpack can be triggered, resulting in very large avalanches.
Building windslab at tree line and above on lee aspects. It's a continuous problem that requires constant attention in order to ensure your safety and riding quality.
Large cornices on ridge top lee features. Their sheer mass is a problem. Recent cornice failures have been generally small (a few tons or so;) but are consistently triggering large deep persistent slab avalanches in alpine terrain.
The deep persistent slab can be triggered by travelers from shallow or weak locations or naturally from large loads such as cornice failure or windslab avalanches.
The snowpack throughout the region has a weak base and remains suspect. Approach all avalanche terrain with suspicion and exercise conservative route choices. The&nbsp; natural avalanche cycle has ended but human triggered avalanches are still possible.
Fresh wind slabs have been reported on lee aspects in the alpine.
There has been an increasing frequency of cornice failures this past week. Be wary of this as we transition into spring (cornice season).
The snowpack is stabilizing after last week's cycle, and now we are left with a classic low probability, high consequence problem. Natural avalanches have mostly ceased, but triggering is still possible - especially from large loads like cornices.
There has been an increasing frequency of cornice failures this past week. Be wary of this as we transition into spring (cornice season).
Fresh wind slabs can be expected in the alpine.
If triggered storm slabs have the potential to step down to deeper layers buried in March or February. Mild temperatures are helping to heal our storm slab problem, as this process occurs the slab properties also increase over any buried weak layer!
Cornices are very large right now and can fail unpredictably - if this happens persistent weak layers deep in the snowpack can be triggered, resulting in very large avalanches.
The snowpack throughout the region has a weak base and remains suspect. Approach all avalanche terrain with suspicion and exercise conservative route choices.  This problem will persist for the foreseeable future.
There has been an increasing frequency of cornice failures this past week. Warmer temperatures and solar input Friday will promote failures of large cornices which can trigger deeper instabilities. 
We wont likely see a great freeze Friday morning, and looks like we may see a decent amount of sun, especially in the East part of the region (Banff).  Watch locally for the amount of warming as we start the transition into spring conditions. 
Large cornices on ridge top lee features. Their sheer mass is a problem. Recent cornice failures have been generally small (a few tons or so;) but are consistently triggering large deep persistent slab avalanches in alpine terrain.
The deep persistent slab can be triggered by travelers from shallow or weak locations or naturally from large loads such as cornice failure or windslab avalanches.
The snowpack is stabilizing after last week's cycle, and now we are left with a classic low probability, high consequence problem. Natural avalanches have mostly ceased, but triggering is still possible - especially from large loads like cornices.
There has been an increasing frequency of cornice failures this past week. Be wary of this as we transition into spring (cornice season).
A decent freeze is possible in the Little Yoho region, but the forecast for clearing skies will heat up solar aspects as we transition slowly into spring.&nbsp;
Wind slabs formed by SW winds on Thursday will be difficult to detect under Fridays new snow. Fresh wind slabs will likely form with SW winds forecast for the weekend.
Facets in the bottom 1/3rd of the snowpack are persisting as a weak layer to be respected. These could be triggered by large triggers such as cornice falls and wind slab avalanches.
Warm temps overnight and new snow will insulate the moist upper snowpack at treeline and below. When the sun comes out today, expect avalanche activity to increase on solar asps with potential for wet slabs or glide avalanches.
If triggered storm slabs have the potential to step down to deeper layers buried in March or February. The warmth from solar heating today will make this slab more reactive.
Cornices are very large right now and can fail unpredictably - if this happens persistent weak layers deep in the snowpack can be triggered, resulting in very large avalanches.
The snowpack throughout the region has a weak base and remains suspect. Approach all avalanche terrain with suspicion and exercise conservative route choices. This problem will persist for the foreseeable future.
With the forecast winds and new snow we expect new wind slabs to form in the alpine and cornice growth to increase. Watch for fresh wind loading near ridge crests, and avoid areas exposed to cornices.
The snowpack is stabilizing after the last avalanche cycle, and now we are left with a low probability, high consequence problem. Natural avalanches have mostly ceased, but triggering is still possible - especially from large loads like cornices.
If the new snow and strong West winds come through as forecast, we will likely see new wind slabs forming and increased cornice growth on Saturday. Treat lee areas with caution and avoid terrain with large cornices overhead until the winds ease.
Large cornices on ridge top lee features continue to build with strong SW winds. Their sheer mass is a problem. Recent alpine releases have resulted in large slab avalanches.
The deep persistent slab can be triggered by travelers from shallow or weak locations or naturally from large loads such as cornice failure or windslab avalanches.
Strong&nbsp; SW winds in the alpine have produced wind slabs from recent snow fall. These will be most reactive at upper elevations near ridge features. If triggered they may step down to deep basal weakness.
10 cm of heavy snow with winds gusting to 40 kph will bond poorly to the moist snow surface after yesterdays warm temps.&nbsp; If triggered storm slabs have the potential to step down to deeper layers buried in March or February.
Cornices are very large right now and can fail unpredictably - if this happens persistent weak layers deep in the snowpack can be triggered, resulting in very large avalanches.
The snowpack throughout the region has a weak base and remains suspect. Approach all avalanche terrain with suspicion and exercise conservative route choices. This problem will persist for the foreseeable future.
Fragile new cornice growth and small fresh windslabs have formed with the recent storm.
The snowpack is stabilizing after the last avalanche cycle, and now we are left with a low probability, high consequence problem. Natural avalanches have mostly ceased, but triggering is still possible - especially from large loads like cornices.
Fragile new cornice growth and small fresh windslabs have formed with the recent storm.
New windslab formed by recent SW winds could be reactive and if triggered, could step down to the deep persistent slab.
Cornice failure is hard to predict but is more likely with inputs like solar radiation and wind-loading.
This problem is unlikely to disappear.  It can be triggered by large loads like cornice fall or windslab failure.  Human triggering is most likely from shallow spots or on steep unsupported slopes.
20-30 cm of heavy snow with moderate winds have formed storm slabs that need time to bond to the underlying moist snow surface. If triggered, these storm slabs have the potential to step down to deeper layers buried in March or February.
Cornices are very large right now and can fail unpredictably - if this happens persistent weak layers deep in the snowpack can be triggered, resulting in very large avalanches.
The snowpack throughout the region has a weak base and remains suspect. Approach all avalanche terrain with suspicion and exercise conservative route choices. This problem will persist for the foreseeable future.
New cornice growth and small fresh windslabs have formed with the recent storm specific to immediate lees in the alpine..
The snowpack is stabilizing after the last avalanche cycle, and now we are left with a low probability, high consequence problem. Natural avalanches have mostly ceased, but triggering is still possible - especially from large loads like cornices.
Fragile new cornice growth and small fresh windslabs have formed with the recent storm.
New windslab formed by recent SW winds could be reactive and if triggered, could step down to the deep persistent slab.
Cornice failure is hard to predict but is more likely with inputs like solar radiation and wind-loading.
This problem is unlikely to disappear. It can be triggered by large loads like cornice fall or windslab failure. Human triggering is most likely from shallow spots or on steep unsupported slopes.
The weekend's storm snow has been redistributed into widespread wind slabs in the alpine and open tree-line features. These slabs were reactive to light loads yesterday and will need time to bond to the underlying interface.
The large cornices hanging on the ridge-lines are fragile and they pack a monster punch if they fail on the slopes below. These massive triggers have the potential to trigger deeper layers and cause very large avalanches.
New snow over old crusty surfaces will likely produce small natural avalanches with daytime warming and/or solar input.
Wind slabs which formed on Sunday will be difficult to detect. Expect new wind slab development later in the forecast period as temperatures warm and winds increase.
Prolonged solar radiation and rising freezing levels with weaken the snowpack on South and West aspects, especially around steep and rocky areas.
Cornice failure is hard to predict but is more likely with inputs like solar radiation and wind-loading.
This problem is unlikely to disappear. It can be triggered by large loads like cornice fall or windslab failure. Human triggering is most likely from shallow spots or on steep unsupported slopes.
The snowpack throughout the region has a weak base and remains suspect. Approach all avalanche terrain with suspicion and exercise conservative route choices. This problem will persist for the foreseeable future.
Cornices are big and we are getting regular reports of cornices failing. A large cornice fall could trigger a bigger avalanche on the slope below.
The snowpack is stabilizing after the last avalanche cycle, and now we are left with a low probability, high consequence problem. Natural avalanches have mostly ceased, but triggering is still possible - especially from large loads like cornices.
Cornices are big and we are getting regular reports of cornices failing. A large cornice fall could trigger a bigger avalanche on the slope below.
Last weekend's storm snow has been redistributed into widespread soft windslab in the alpine down to treeline. These slabs need time to bond to the old snow surface. They may prove more reactive with prolonged solar input.
Large cornices hanging along lee ridge lines are fragile and pack a major punch if they fail onto the slopes below. Cornices have potential to trigger deeper weak layers and cause very large avalanches. Solar input will increase chance of failure.
Cornice failure is hard to predict but is more likely with inputs like solar radiation and wind-loading.
This problem is unlikely to disappear. It can be triggered by large loads like cornice fall or windslab failure. Human triggering is most likely from shallow spots or on steep unsupported slopes.
The snowpack throughout the region has a weak base and remains suspect. Approach all avalanche terrain with suspicion and exercise conservative route choices. This problem will persist for the foreseeable future.
Cornices are big and we are getting regular reports of cornices failing. A large cornice fall could trigger a bigger avalanche on the slope below.
The snowpack is stabilizing after the last avalanche cycle, and now we are left with a low probability, high consequence problem. Natural avalanches have mostly ceased, but triggering is still possible - especially from large loads like cornices.
Cornices are big and we are getting regular reports of cornices failing. A large cornice fall could trigger a bigger avalanche on the slope below.
SW winds continue to redistribute snow onto alpine lee slopes forming soft slab. Look for soft slab in the immediate lee of ridges and crossloaded features. Light surface wind effect is widespread above treeline.
Cornices are large and are failing sporadically and almost daily. These large triggers are capable of triggering persistent weak layers resulting in large slides.
Expect wind-slab formation by current strong SW winds particularly off alpine ridges and cross-loaded gullies. If triggered, could step down to the deep persistent slab.
Cornice failure is hard to predict but is more likely with inputs like solar radiation and wind-loading. Some very large cornices out there.
This problem is unlikely to disappear. It can be triggered by large loads like cornice fall or wind-slab avalanche. Human triggering is most likely from shallow spots or on steep unsupported slopes.
Expect fresh slab development with snow and wind forecast for Friday.
Cornices are large and continue to build with warm temps and wind. Incoming rain on Friday may be the trigger that causes cornices to fail. These will have plenty of new snow to entrain and may trigger wind slabs. Be aware of what is above you.
Dry snow persists on north aspects at upper elevations, watch for loose dry avalanches in steep north facing terrain.
Persistent weak layers deep in the snowpack continue to cause uncertainty, despite the surface layers being remarkably strong. Continue to avoid exposure to large slopes. Patience is a virtue as we wait for a melt/freeze cycle to change anything.
April is cornice season, and we are getting regular reports of cornices failing. Mature cornices can propagate much further than you expect, so give them a wide margin when traveling on ridges and get up early and hurry if you must travel below them.
The snowpack is generally unstable, despite the strong feel of the surface layers. This next warm-up will again test the snowpack and we expect increased avalanche activity over the next several days. Patience is a virtue with this kind of problem.
April is cornice season, and we are getting regular reports of cornices failing. Mature cornices can propagate much further than you expect, so give them a wide margin when traveling on ridges and get up early and hurry if you must travel below them.
Soft slabs overlie a series of strong crusts in most areas. As freezing levels rise this slab is expected to be increasingly reactive. These slabs will be deepest in areas that have been wind-loaded.
Huge cornices loom at ridgetop and have been failing unpredictably. When they drop they provide large triggers for deep, persistent weak layers. The resulting avalanches have been observed to run well into the valley bottoms.
This problem will persist. It can be triggered by large loads such as cornice failures. Triggering is most likely from shallow spots or on steep unsupported slopes. Friday's warm temperatures and snow may be pushing it closer to the tipping point.
Cornice failure is hard to predict but is more likely with inputs like solar radiation, warm temperatures, and wind-loading. Some very large cornices out there so give them a wide berth.
The snowpack is generally unstable, despite the strong feel of the surface layers. This warm-up is again testing the snowpack and we expect increased avalanche activity. Patience is a virtue with this kind of problem.
April is cornice season, and we are getting regular reports of cornices failing and triggering deep slabs. Mature cornices can propagate much further than you expect, so give them a wide margin when traveling on ridges. Travel early.
April is cornice season, and we are getting regular reports of cornices failing. Mature cornices can propagate much further than you expect, so give them a wide margin when traveling on ridges and get up early and hurry if you must travel below them.
Persistent weak layers deep in the snowpack continue to cause uncertainty, despite the surface layers being remarkably strong. Continue to avoid exposure to large slopes. Patience is a virtue as we wait for a melt/freeze cycle to change anything.
Incoming snow and wind will likely form slabs. These will become particularly touchy if snowfall turns to rain.
New snow over old crusty surfaces will likely produce small natural avalanches with daytime warming or when rainfall commences.
Cornices are large and continue to build with warm temps and wind. Incoming rain/snow on Friday may be the trigger that causes cornices to fail, which may in turn trigger deep persistent weak layers in large open terrain.
20cm of moist snow overlies a crust everywhere other than high elevation N'ly aspects. Winds have been shifting directions and will have formed deeper pockets on lee slopes. Rising freezing levels and continued loading will make them more reactive.
Cornices dropping and smaller avalanches have recently triggered deep, persistent weak layers. The resulting avalanches have been observed to run well into the valley bottoms. With continued loading during the storm likelihood will increase.
This problem will persist. Activity has subsided but with all the variables beyond our control, keep this on your radar. It can be triggered by large loads such as cornice failures or human triggered from shallow spots or steep unsupported slopes.
Cornice failure is hard to predict. Some very large cornices are out there so wise to give them a wide berth.
The snowpack is generally unstable, despite the strong feel of the surface layers. This layer remains reactive in snowpack test and can produced large avalanches. Patience is a virtue with this kind of problem.
April is cornice season, and we are getting regular reports of cornices failing and triggering deep slabs. Mature cornices can propagate much further than you expect, so give them a wide margin when traveling on ridges.
April is cornice season, and we are getting regular reports of cornices failing. Mature cornices can propagate much further than you expect, so give them a wide margin when traveling on ridges and get up early and hurry if you must travel below them.
Persistent weak layers deep in the snowpack continue to cause uncertainty, despite the surface layers being remarkably strong. Continue to avoid exposure to large slopes. Patience is a virtue as we wait for a melt/freeze cycle to change anything.
30cm of moist snow overlies a crust everywhere other than high elevation N'ly aspects. Winds have been shifting directions and will have formed deeper pockets on lee slopes. Rising freezing levels and continued loading will make them more reactive.
Cornices dropping and smaller avalanches have recently triggered deep, persistent weak layers. The resulting avalanches have been observed to run well into the valley bottoms. With continued loading during the storm likelihood will increase.
This problem will persist. Activity has subsided but, need to keep this on your radar. It can be triggered by large loads such as cornice failures or human triggered from shallow spots or steep unsupported slopes.
Cornice failure is hard to predict. Some very large cornices are out there so wise to give them a wide berth.
The snowpack is generally unstable, despite the strong feel of the surface layers. This layer remains reactive in snowpack test and can produced large avalanches. Patience is a virtue with this kind of problem.
April is cornice season, and we are getting regular reports of cornices failing and triggering deep slabs. Mature cornices can propagate much further than you expect, so give them a wide margin when traveling on ridges.
Newly formed windslabs developed saturday morning, Load was specific to lees features and up to 40cm thick. Reports of several skier triggered slabs to size 1.5 Saturday.
The snowpack is generally unstable, despite the strong feel of the surface layers. This layer remains reactive in snowpack test and can produced large avalanches. Patience is a virtue with this kind of problem.
April is cornice season, and we are getting regular reports of cornices failing and triggering deep slabs. Mature cornices can propagate much further than you expect, so give them a wide margin when traveling on ridges.
Newly formed windlslab isolated to lee slopes in the alpine. Reports of skier triggered avalanches to size 1.5.
30cm of moist snow overlies a crust everywhere other than high elevation N'ly aspects. Winds have been shifting directions and will have formed deeper pockets on lee slopes. These slabs are reactive to human triggering.
Cornices and smaller avalanches have recently triggered deep, persistent weak layers. The resulting avalanches have been observed to run well into the valley bottoms. With daytime warming, the likelihood will increase.
Watch for isolated pockets of slab in alpine lee and crossloaded areas.
The snowpack is generally unstable, despite the strong feel of the surface layers. This layer remains reactive in snowpack test and can produced large avalanches. Patience is a virtue with this kind of problem.
April is cornice season, and we are getting regular reports of cornices failing and triggering deep slabs. Mature cornices can propagate much further than you expect, so give them a wide margin when traveling on ridges.
This problem will persist. Activity has subsided but, need to keep this on your radar. It can be triggered by large loads such as cornice failures or human triggered from shallow spots or steep unsupported slopes.
Cornice failure is hard to predict. Some very large cornices are out there so wise to give them a wide berth.
The snowpack is generally unstable, despite the strong feel of the surface layers. This layer remains reactive in snowpack test and can produced large avalanches. Patience is a virtue with this kind of problem.
April is cornice season, and we are getting regular reports of cornices failing and triggering deep slabs. Mature cornices can propagate much further than you expect, so give them a wide margin when traveling on ridges.
New storm snow needs time to bond to the underlying firm temp crusts. Where winds have redistributed it in lee features, expect the slabs to be reactive to light human loads, especially at ridge-top, over convexities, and large planar alpine slopes.
Large cornices guard the high alpine ridges and are HUGE. If these fail, due to direct sun, human loading, or wind loading, they could dig down into the snowpack and trigger deep persistent slabs. Always keep an eye on the high alpine ridges.
The snowpack is slowly gaining strength, but the weak basal facets continue to produce sudden collapse results and can produce large avalanches with large triggers. Stick to planar, supported slopes with a deeper snowpack if entering steep terrain.
April is cornice failure season, and we continue to get reports of cornices failing and triggering deep slabs. Mature cornices can also break much further back than you expect, so give them a wide margin when traveling on ridges.
Another 5-10cm of snow is forecast for Tuesday so we expect to see sluffing out of steep alpine and tree line terrain as this new snow arrives. We may also see a few small wind slabs near ridge crests so enter lee loaded terrain with caution.
The snowpack is slowly gaining strength however the basal facets remain a concern in thin snowpack areas and large triggers could create big avalanches on these facets.  Use caution in steep terrain and avoid thin snowpack areas when possible. 
April is cornice failure season, and we are getting regular reports of cornices failing and triggering deep slabs. Mature cornices can break much further back than you expect, so give them a wide margin when traveling on ridges.
Another 10-15cm of snow is forecast on Tuesday. If this arrives we expect to see sluffing steep alpine and tree line terrain, and possibly some isolated wind slabs in immediate lee areas of the alpine. Use caution if entering lee loaded areas.
The deep instability could be triggered by large loads such as a cornice failure or a surface avalanche. Human triggering is most likely from shallow spots or on steep unsupported slopes.
Cornice failure is hard to predict but likelihood increases with sun, warm temperatures, and wind-loading. There are some very large cornices out there. Wise to give them a wide berth.
In most areas the storm slab overlies a crust, which provides a good sliding layer if the slab is triggered. On lee features that have been windloaded, deeper pockets may be more reactive to human triggering.
HUGE cornices guard the high alpine ridges and they keep growing. If they fail due to direct sun, human loading, or wind loading, they could trigger deep persistent slabs. Even if they don't, that bus sized chunk trundling down is concern in itself.
The snowpack is slowly gaining strength, but the weak basal facets continue to produce sudden collapse results and can produce large avalanches with large triggers. Stick to planar, supported slopes with a deeper snowpack if entering steep terrain.
April is cornice failure season, and we continue to get reports of cornices failing and triggering deep slabs. Mature cornices can also break much further back than you expect, so give them a wide margin when traveling on ridges.
The snowpack is slowly gaining strength however the basal facets remain a concern in thin snowpack areas and large triggers could create big avalanches on these facets. Use caution in steep terrain and avoid thin snowpack areas when possible.
April is cornice failure season, and we are getting regular reports of cornices failing and triggering deep slabs. Mature cornices can break much further back than you expect, so give them a wide margin when traveling on ridges.
The deep instability could be triggered by large loads such as a cornice failure or a surface avalanche. Human triggering is most likely from shallow spots or on steep unsupported slopes.
Cornice failure is hard to predict but likelihood increases with sun, warm temperatures, and wind-loading.There are some very large cornices out there. Wise to give them a wide berth.
Storm slabs are most volatile where they overlie a crust on solar aspects. Recent wind loading has redistributed the storm snow, leaving behind isolated pockets of wind slabs. lower elev should have seen a crust recovery last night.
Cornices are always unpredictable! However we are seen cornices fail in the HWY corridor and in the back country on a semi regular basis. With minimal natural triggers today, back country enthusiasts would be the likely trigger.
The snowpack is gaining strength, but the weak basal facets continue to produce sudden collapse results and can produce large avalanches with large triggers. Stick to planar, supported slopes with a deeper snowpack if entering steep terrain.
April is cornice failure season, and we continue to get reports of cornices failing and triggering deep slabs. Mature cornices can also break much further back than you expect, so give them a wide margin when traveling on ridges.
The snowpack is gaining strength however the basal facets remain a concern in thin snowpack areas and large triggers could create big avalanches on these facets. Use caution in steep terrain and avoid thin snowpack areas when possible.
April is cornice failure season, and we are getting regular reports of cornices failing and triggering deep slabs. Mature cornices can break much further back than you expect, so give them a wide margin when traveling on ridges.
The deep instability could be triggered by large loads such as a cornice failure or a surface avalanche. Human triggering is most likely from shallow spots or on steep unsupported slopes.
Cornice failure is hard to predict but likelihood increases with sun, warm temperatures, and wind-loading.There are some very large cornices out there. Wise to give them a wide berth.
New snow arrives in the alpine on Thursday. Rising winds Thursday into Friday will create storm slabs on lee slopes, which may be reactive where they overlie hard crusts.
Cornices remain impressively large, and will increase in size and sensitivity with forecast snow, warmth and wind on Thursday.
Moderate gusting to strong winds from the NE this morning and last night are building wind slabs in the alpine and at the upper end of treeline. Winds are forecast to switch today to the SW and stay in the moderate range.
Storm slabs are most volatile where they overlie a crust on solar aspects. 50+cm of new snow accompanied by warm temperatures and wind fell over the last week in the alpine and upper end of tree line.
Cornices are always unpredictable! However we are seen cornices fail in the HWY corridor and in the back country on a semi regular basis. With naturals triggers easing, back country enthusiasts would be the likely trigger.
The snowpack is gaining strength, but the weak basal facets continue to produce sudden collapse results and can produce large avalanches with large triggers. Stick to planar, supported slopes with a deeper snowpack if entering steep terrain.
April is cornice failure season, and we continue to get reports of cornices failing and triggering deep slabs. Mature cornices can also break much further back than you expect, so give them a wide margin when traveling on ridges.
These are small in size and will be short in duration as a problem, but storm slabs were being triggered in numerous alpine locations Thursday.  On solar aspects these may be sitting on a sun crust. 
The snowpack is gaining strength, however the facets deeper in the snowpack remain a concern in thin alpine areas and where a cornice could trigger the slope. These facets do exist in isolated treeline areas, but are not currently a problem.
April is cornice failure season, and this is the biggest concern for triggering deeper layers until we get some real spring heat. Mature cornices can break much further back than you expect, so give them a wide margin when traveling on ridges.
These will be small and size and will not last long as an avalanche problem, but watch for their formation around alpine terrain traps, or over large cliffs. On solar aspects these may be sitting over a sun crust.
The deep instability could be triggered by large loads such as a cornice failure or a surface avalanche. Human triggering is most likely from shallow spots or on steep unsupported slopes.
Cornice failure is hard to predict.&nbsp; Wise to give them a wide berth.
Winds have switched around to the SW and are building and redistributing surface wind slabs in alpine and tree-line lee features. These slabs may be quite sensitive to trigger if they sit upon a firm sun or temperature crust.
There are multiple crusts in the upper metre of the snowpack, each providing a smooth sliding layer if avalanches dig down and trigger the deeper layers. Solar aspects are the biggest concern with day-time warming and a powerful April sun.
The cornices are as big as they are going to get. Predicting their failure is tricky, but warming, heavy intense loading, or direct sun will weaken them. They have triggered some very large natural avalanches in and near Rogers Pass recently.
15 cm of new snow with moderate SW winds will create reactive alpine windslab on lee slopes.&nbsp; If triggered, these could step down to the deep persistent slab resulting in very large avalanches.
The deep instability could be triggered by large loads such as a cornice failure or a surface avalanche. Human triggering is most likely from shallow spots or on steep unsupported slopes.
New snow and wind will increase the likelihood of cornice failure.
The snowpack is gaining strength, but the weak basal facets continue to produce sudden collapse results and can produce large avalanches with large triggers. Stick to planar, supported slopes with a deeper snowpack if entering steep terrain.
West winds will add fragile new growth to the mature cornices that exist throughout the range. These are a fall hazard while traveling on ridges and a significant overheard hazard to travelers below them. Wind, warm temps or sun may cause failures.
Up to 40cm of recent snow has been available to transport by West winds. Skiers could easily trigger windslabs local to ridges Friday. With more wind and more snow in the forecast, expect these slabs to remain touchy through Sunday.
The snowpack is gaining strength, however the facets deeper in the snowpack remain a concern in thin alpine areas and where a cornice could trigger the slope. These facets do exist in isolated treeline areas, but are not currently a problem.
West winds will add fragile new growth to the mature cornices that exist throughout the range. These are a fall hazard while traveling on ridges and a significant overheard hazard to travelers below them. Wind, warm temps or sun may cause failures.
Up to 40cm of recent snow has been available to transport by West winds. Skiers could easily trigger windslabs local to ridges Friday. With more wind and more snow in the forecast, expect these slabs to remain touchy through Sunday.
Winds have switched around to the SW and are redistributing snow and building wind slabs in alpine and tree-line lee features. These slabs may be quite sensitive to trigger if they sit upon a firm sun or temperature crust.
The cornices are as big as they are going to get. Predicting their failure is tricky, but warming, heavy intense loading, or direct sun will weaken them. They have triggered some very large natural avalanches in and near Rogers Pass recently.
Moderate to strong west winds with new snow have created soft slabs in the alpine. Skier triggering will remain likely through Sunday. Use caution if entering steep lee loaded areas and expect sluffing in steep gullies until the winds ease off.
Moderate to strong west winds have been rapidly building cornices over the past two days. Minimize your time underneath these and remember that a cornice failure could also trigger the deep persistent slab on the basal facets.
The snowpack is gaining strength, but the weak basal facets continue to produce sudden collapse results and can produce large avalanches with large triggers. Stick to planar, supported slopes with a deeper snowpack if entering steep terrain.
Moderate to strong west winds with new snow have created soft slabs in the alpine. Skier triggering will remain likely through Sunday. Use caution if entering steep lee loaded areas and expect sluffing in steep gullies until the winds ease off.
Moderate to strong west winds have been rapidly building cornices over the past two days. Minimize your time underneath these and remember that a cornice failure could also trigger the persistent slab in thin snowpack areas.
The snowpack is gaining strength, however the facets deeper in the snowpack remain a concern in thin alpine areas and where a cornice could trigger the slope. These facets do exist in isolated treeline areas, but are not currently a problem.
Mod SW winds has reactive alpine windslab on lee slopes. If triggered, these could step down to the deep persistent slab resulting in very large avalanches.
The deep instability could be triggered by large loads such as a cornice failure or a surface avalanche. Human triggering is most likely from shallow spots or on steep unsupported slopes.
Rapid warming in temperature or intense solar will increase the likelihood of cornice failure.
Storm Slab pockets exist lee to West and SW winds, especially immediately behind ridge crests, outcrops, and islands of trees (&quot;immediate lees&quot;). It is possible a person or solar radiation could trigger these. This problem will lessen over time.
Cornices growth has continued. Periods of intense solar radiation will increase the chance of these failing naturally. Of course, they are most likely to break if walked upon.
Loose Wet avalanches are possible on steep slopes on SUNDAY, as strong April Sun warms recent, soft surface snow. Expect this to be most pronounced were the most new snow lies: Easterly aspects/upper elevations in the Western portions of the park.
Successive waves of precipitation have arrived with strong southerly winds in the alpine. The storm snow seems to be bonding well to an existing crust (Nov. 26), but pockets of wind slab remain a concern. Human triggering of wind slabs is possible.
Natural avalanche activity has tapered, but it is still possible to trigger a large avalanche in this layer. Slab avalanches have been most commonly triggered ~ 2400m where the Nov. 23rd crust fades out.
Up to 50cm of recent snow has been blown into windslabs in the alpine. These have been reactive to ski cuts, but are still soft and predictable at this point.
Natural avalanche activity has tapered, but it is still possible to trigger this layer if you hit it in the right spot. We are most concerned about this above ~ 2400m where the Nov. 23rd crust fades out.
Up to 50cm of recent snow has been blown into windslabs in the alpine. These have been reactive to ski cuts, but are still soft and predictable at this point.
wind slabs continue building at ridge tops and if triggered, has the potential to step down to the deeper instability.
The steady accumulation of new snow is settling into a reactive storm slab. It will be most reactive at ridgetop and in steep unsupported terrain. Expect avalanches to be run fast and to the bottom of run-outs. Be aware of overhead exposure!
Wind slabs continue building at ridge tops and if triggered, has the potential to step down to the deeper instability.
Natural avalanche activity has tapered, but concern remains for human triggering of the weak snow on this layer. Previously, slab avalanches have been triggered above ~ 2400m where the Nov. 23rd crust fades out. Shallow alpine areas warrant caution.
Up to 50cm of recent snow is available for transport TL and above. So far only light, gusting moderate, SW winds have created soft slabs and wind effect but watch for this to change as winds shift to the NW Sunday and then increase on Monday.
Natural avalanche activity has tapered, but concern remains for human triggering of the weak snow on this layer. Previously, slab avalanches have been triggered above ~ 2400m where the Nov. 23rd crust fades out. Shallow alpine areas warrant caution.
Up to 50cm of recent snow is available for transport TL and above. So far only light, gusting moderate, SW winds have created soft slabs and wind effect but watch for this to change as winds shift to the NW Sunday and then increase on Monday.
Settling new snow and wind at ridgetop has created a reactive soft slab.&nbsp; Compression tests yesterday showed shears in the storm snow down 15 &amp; 30cm. In steep alpine terrain avalanches may run to the bottom of run-outs. Be aware of overhead exposure!
Natural avalanche activity has tapered, but concern remains for human triggering of the weak snow on this layer. Previously, slab avalanches have been triggered above ~ 2400m where the Nov. 23rd crust fades out. Shallow alpine areas warrant caution.
Up to 50cm of recent snow is available for transport TL and above. So far only light, gusting moderate, SW winds have created soft slabs and wind effect but watch for this to change as the winds increase from the NW on Monday.
Natural avalanche activity has tapered, but concern remains for human triggering of the weak snow on this layer. Previously, slab avalanches have been triggered above ~ 2400m where the Nov. 23rd crust fades out. Shallow alpine areas warrant caution.
Up to 50cm of recent snow is available for transport TL and above. So far only light, gusting moderate, SW winds have created soft slabs and wind effect but watch for this to change as the winds increase from the NW on Monday.
Wind slabs are present on lee aspects.&nbsp; Bond strength of these slabs to the snowpack below is uncertain.&nbsp;
50cm of low density storm snow is been redistributed by moderate winds in the alpine and exposed areas at treeline. Winds have been variable over the past several days but the predominate flow is now from the NW, moderate gusting to strong at times.
50cm of low density storm snow has delivered excellent riding conditions. For the most part sluff accumulation is manageable but use caution if you are stepping out into steeper, committing terrain.
Natural avalanche activity has tapered, but concern remains for human triggering on the weak snow on this layer. Previously, slab avalanches have been triggered above ~ 2400m where the Nov. 23rd crust fades out. Shallow alpine areas warrant caution.
Up to 50cm of recent snow is available for transport TL and above. 
Natural avalanche activity has tapered, but concern remains for human triggering on the weak snow on this layer. Previously, slab avalanches have been triggered above ~ 2400m where the Nov. 23rd crust fades out. Shallow alpine areas warrant caution.
Up to 50cm of recent snow is available for transport TL and above.
Wind slabs are present on lee aspects. Bond strength of these slabs to the snowpack below is uncertain.
50cm of low-density storm snow is been redistributed by moderate winds in the alpine and exposed areas at treeline. Wind slabs have been quite variable and will be most volatile on unsupported, convex terrain features.
1681A555">Solar warming today could trigger loose dry avalanches on steep solar aspects. This avalanche problem will peak on Thursday and Friday, with freezing levels forecasted to reach 3000m!
Natural avalanche activity has tapered, but concern remains for human triggering on the weak snow on this layer. Previously, slab avalanches have been triggered above ~ 2400m where the Nov. 23rd crust fades out. Shallow alpine areas warrant caution.
Recent moderate to strong winds have created variable windslabs in exposed alpine areas along the divide. These are mostly stubborn, but because they are of variable stiffness, they are difficult to manage on skis
Wind slabs are present on lee aspects. Bond strength of these slabs to the snowpack below is uncertain.
Natural avalanche activity has tapered, but concern remains for human triggering on the weak snow on this layer. Previously, slab avalanches have been triggered above ~ 2400m where the Nov. 23rd crust fades out. Shallow alpine areas warrant caution.
Recent moderate to strong winds have created variable windslabs in exposed alpine areas along the divide. These are mostly stubborn, but because they are of variable stiffness, they are difficult to manage on skis
Last week's storm snow has been redistributed by moderate winds at and above treeline. These slabs may become more reactive with solar input and rising freezing levels.
Solar input and rising freezing levels are expected to result in loose dry slides on steeper solar aspects today. This problem will peak on Thursday and Friday with freezing levels reaching mountain top.
Natural avalanche activity has tapered however, shallow alpine areas warrant caution. Also, forecasters are uncertain as to how the Oct 31 layer will react to rising freezing levels on Thursday.
Recent moderate to strong winds have created variable windslabs in exposed alpine areas along the divide. These are mostly stubborn, but because they are of variable stiffness.
Natural avalanche activity has tapered however, shallow alpine areas warrant caution. Also, forecasters are uncertain as to how the Oct 31 layer will react to rising freezing levels on Thursday.
Recent moderate to strong winds have created variable windslabs in exposed alpine areas along the divide. These are mostly stubborn, but because they are of variable stiffness.
Although this deeply buried crust, on which this weakness beds, is widespread we think that it will be at its most reactive on solar facing slopes. Thursdays weather is abnormally warm and its effect on the snowpack will be to destabilize it.
Wind slabs are present on lee aspects. Bond strength of these slabs to the snowpack below is uncertain. The warm temperatures on Thursday will likely trigger avalanches which will step down to deeper layers in the snowpack
Solar input and unusually high temperatures are expected to result in loose moist slides on steeper solar aspects today. Larger loose slides have the potential to entrain snow and step down to deeper persistent layers. Don't be caught off guard.
Natural avalanche activity has tapered however, shallow alpine areas warrant caution. Uncertainty around the Oct 31 layer remains especially with the temperature inversion changing conditions at upper elevations. Be wary of warming in start zones.
Recent moderate to strong winds have created variable windslabs in exposed alpine areas along the divide. These may become more sensitive to triggering with warmer temperatures.
Natural avalanche activity has tapered however, shallow alpine areas warrant caution. Uncertainty around the Oct 31 layer remains especially with the temperature inversion changing conditions at upper elevations. Be wary of warming in start zones.
Recent moderate to strong winds have created variable windslabs in exposed alpine areas along the divide. These may become more sensitive to triggering with warmer temperatures.
Solar triggering of loose dry avalanches is occurring in steep terrain. The entraining snow may have the volume to knock ice climbers off their stances. 
Solar triggering is possible on steep south facing slopes creating large full path avalanches.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">This is day 2 of a strong </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/20171208%20Inversion.jpg" target="_blank"><span class="s_9255B882">alpine temperature inversion</span></a><span class="s_AA239A9B"> and very little cloud cover at higher elevations. Solar input and warm temps will cause loose slides on steep solar aspects. Larger slides may trigger early-season persistent crust layers.
Natural avalanche activity has tapered, however shallow alpine areas warrant caution. Uncertainty around the Halloween layer remains especially with the warmer temperatures changing conditions at upper elevations.
Natural avalanche activity has tapered, however shallow alpine areas warrant caution. Uncertainty around the Halloween layer remains especially with the warmer temperatures changing conditions at upper elevations.
Solar triggering of loose avalanches is occurring in steep terrain. The entraining snow has enough volume to knock ice climbers off or bury you in a terrain trap. Reactivity increases with afternoon sun.
Solar triggering is possible on steep south facing slopes creating large avalanches.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">The strong </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/20171208%20Inversion.jpg" target="_blank"><span class="s_9255B882">alpine temperature inversion</span></a><span class="s_AA239A9B"> continues bringing above zero temps to the alpine. The warm temps, with a nudge from strong solar input, will cause loose slides on steep S &amp; W aspects.  Rock outcrops will heat up fastest with the sun's rays.
Solar triggering of loose avalanches may occur in steep terrain. The entraining snow may have enough volume to knock ice climbers off or bury you in a terrain trap. Reactivity increases with afternoon sun.
Solar triggering is possible on steep south facing slopes.
Some uncertainty around the possibility for triggering the Halloween layer remains but we are not seeing any avalanches at this point. The most likely trouble spots would be steep alpine areas where a hard surface slab sits over the weaker facets.
Some uncertainty around the possibility for triggering the Halloween layer remains but we are not seeing any avalanches at this point. The most likely trouble spots would be steep alpine areas where a hard surface slab sits over the weaker facets.
A temperature inversion continues to bring above zero temps to the alpine. The warm temps, with a nudge from strong solar input, can cause loose avalanches on steep S and W aspects. Rock outcrops will heat up fastest with the sun's rays.
Some uncertainty for triggering the Halloween layer remains but we have come through a warm period and a lot of skier testing produced no activity over the past five days.&nbsp; These slabs still deserve respect in steep and shallow areas.
Some uncertainty for triggering the Halloween layer remains but we have come through a warm period and a lot of skier testing produced no activity over the past five days. These slabs still deserve respect in steep and shallow areas.
Solar triggering is possible on steep south facing slopes.
A temperature inversion continues to bring above zero temps to the alpine. The warm temps, with a nudge from strong solar input, can cause loose avalanches on steep S and W aspects. Rock outcrops will heat up fastest with the sun's rays.
Heavy loads , like&nbsp; natural cornice releases might trigger this deep instability.
Some uncertainty for triggering various mid-pack layers remain, but we have come through a warm period and a lot of skier testing produced no activity over the past five days. These slabs still deserve respect in steep and shallow areas.
Some uncertainty for triggering various mid-pack layers remain, but we have come through a warm period and a lot of skier testing produced no activity over the past five days. These slabs still deserve respect in steep and shallow areas.
A temperature inversion continues to bring above zero temps to the alpine. The warm temps, with a nudge from strong solar input, can cause loose avalanches on steep S and W aspects. Rock outcrops will heat up fastest with the sun's rays.
Heavy loads , like natural cornice releases might trigger this deep instability.
Limited daytime heating and solar input today will minimize the likelihood of natural avalanches. Watch your sluff in steep unsupported terrain, and above terrain traps.
Heavy loads , like natural cornice releases might trigger this deep instability.
Heavy loads , like natural cornice releases might trigger this deep instability.
After a long dry spell, 10cm of new snow has fallen on a crust on solar aspects and widespread surface hoar. The surface hoar layer will be reactive today around treeline where buried crystals are large. Small skier triggered slides are very likely.
Heavy loads might trigger this deep instability.
After a long dry spell, 10cm of new snow has fallen on a crust on solar aspects and widespread surface hoar. Small skier triggered slides are very likely today and will run fast &amp; far!
Heavy loads like a cornice failure might trigger this deep instability.
ont-weight: bold;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">After a long dry spell, 15cm of new snow has fallen on </span><span class="s_2823317B">widespread surface hoar. </span><span class="s_AA239A9B">Another 25 is expected today! As this new snow settles into a cohesive slab, expect to see avalanche hazard spike! Also expect sluff to be heavy and fast!
Windslabs are just starting to develop in lee alpine areas. Touchiness will depend locally on snow amounts and wind velocity.
Windslabs are just starting to develop in lee alpine areas. Touchiness will depend locally on snow amounts and wind velocity.
Incoming new snow and wind will initially cause small sluffs out of steep terrain.
ont-weight: bold;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">After a long dry spell, 40cm of new snow has fallen on </span><span class="s_2823317B">widespread surface hoar.  </span><span class="s_AA239A9B">As this new snow settles into a cohesive slab, expect to see it become more reactive.  SW winds in the 30-45kph range have built windslab in the alpine.
10-30 cms of new snow from Sunday night has formed soft slabs that are reactive in steep alpine lee areas. Touchiness will depend locally on snow amounts and wind speeds.
10-30 cms of new snow from Sunday night has formed soft slabs that are reactive in steep alpine lee areas. Touchiness will depend locally on snow amounts and wind speeds.
20-30 cm of loose, dry snow fell on sunday night. It landed on very weak facets and surface hoar and will sluff easily in steep terrain.&nbsp; Ice climbers should pay special attention where the consequences of a sluff can be severe.
Yesterday's storm snow is settling into a slab. It will be reactive in windy areas in the Alpine and exposed areas at Tree Line. Steep solar asp will be problematic, as there will be a crust under our slab and a Surface Hoar/Facet combo BTL.
Strong NE winds will easily transport the 25 cm of recent snow into windslabs on S and W aspects (backwards from usual). Avoid freshly wind loaded rolls and slopes and study the snowpack distribution from this upslope storm.
Climbers in steep gullies be prepared for spindrift and loose snow running down the climb. Put in lots of ice screws. Any avalanches will likely be small, but could knock you off your feet.
Strong NE winds will easily transport the 25 cm of recent snow into windslabs on S and W aspects (backwards from usual). Avoid freshly wind loaded rolls and slopes and study the snowpack distribution from this upslope storm.
Climbers in steep gullies be prepared for spindrift and loose snow running down the climb. Put in lots of ice screws. Any avalanches will likely be small, but could knock you off your feet.
Recent storm snow continues to settle into a slab.  Expect the slab to be increasingly sensitivity as you transition into wind effected terrain. Steeper solar slopes harbor a thin crust layer below the storm snow and a facet surface hoar combo BTL.
Moderate gusting to strong N-NE winds have been forming reverse loaded windslab in wind exposed areas at and above treeline.  These slabs may have surface hoar or crust underneath leading them to be sensitive to human triggering.
60cm of new snow sits on a variety of weak layers. Expect an increase in avalanches as the new snow settles and is moved around by the wind.
Strong NE winds will easily transport the 25 cm of recent snow into windslabs on S and W aspects (backwards from usual). Avoid freshly wind loaded rolls and slopes and study the snowpack distribution from this upslope storm.
Climbers in steep gullies be prepared for spindrift and loose snow running down the climb. Put in lots of ice screws. Any avalanches will likely be small, but could knock you off your feet.
The winds have been a bit unpredictable and gusty. Plumes in Yoho yesterday from the north and from the east. Yoho Blow likely to build winslabs on low elevation ice climbs.
Climbers in steep gullies be prepared for spindrift and loose snow running down the climb. Put in lots of ice screws. Any avalanches will likely be small, but could knock you off your feet.
Even with the low danger rating, still be vigilant for small pockets of soft windslab particularly at upper elevation ridgetops.
Recent storm snow is shifting into a settled persistent slab. Expect the slab to be increasingly sensitivity as you transition into wind effected terrain. Steeper solar slopes harbor a thin crust layer below slab and a facet surface hoar combo BTL.
Mod gusting to strong N-NE winds Tuesday formed reverse loaded windslab in wind exposed areas at and above treeline. These slabs may have surface hoar or crust underneath leading them to be sensitive to human triggering.
There has been very little new snow since the end of November (15cm). This drought interface, down 10cm, is the layer of concern. Remain vigilant by avoiding small pockets of windslab particularly at upper elevation ridge tops.
Strong winds have scoured wind exposed terrain down to valley bottom. Wind slab could likely be found on immediate lee slopes.
Isolated wind slabs are present in the alpine, however there is lots of snow available for transport. Pay attention to local winds as conditions can change quickly if the winds pick up.
Isolated wind slabs are present in the alpine, however there is lots of snow available for transport. Pay attention to local winds as conditions can change quickly if the winds pick up.
Recent storm snow is settling into a persistent slab. Expect the slab to be increasingly sensitivity as you transition into steep and/or wind effected terrain. Solar aspects harbor a thin crust layer below the slab and a facet surface hoar combo BTL.
20-40km/hr N-NE winds are forming reverse loaded wind slab in wind exposed areas at and above tree line. These slabs may have surface hoar or crust underneath leading them to be sensitive to human triggering.
Isolated wind slabs are present in the alpine, however there is lots of snow available for transport. Pay attention to local winds as conditions can change quickly if the winds pick up.
There has been very little new snow since the end of November (15cm). This drought interface, down 10cm, is the layer of concern. Remain vigilant by avoiding small pockets of windslab particularly at upper elevation ridge tops.
Isolated wind slabs are present in the alpine, however there is lots of snow available for transport. Pay attention to local winds as conditions can change quickly if the winds pick up.
Recent storm snow is settling into a persistent slab. Expect the slab to be more sensitive as you transition into steep and/or wind effected terrain.&nbsp; South and West aspects have a thin crust layer below the slab and a facet/surface hoar combo BTL.
Moderate variable winds are forming reverse loaded wind slabs in wind exposed areas in the Alpine and at tree line. These slabs may have surface hoar or crust underneath leading them to be sensitive to human triggering.
Wind slabs are present in the alpine, especially in lee areas. So far reports have found these to only about 20cm thick, but pay attention to local winds as conditions can change quickly if they pick up.
This problem should decrease as the winds die down, but climbers especially should watch wind transport above their climbs in alpine terrain. There is still lots of available snow for transport.
Isolated wind slabs are present in the alpine, especially in lee areas.&nbsp; So far reports are that these aren't yet thicker than 20cm, but pay attention to local winds as conditions can change quickly if they pick up.
This should be come less of a problem as the winds decrease, but climbers especially should monitor wind transport in the alpine.&nbsp; Avalanches haven't been running far but there is lots of snow for transport.
Small amounts of recent snow has been blown into thin windslabs over the Dec 18 drought layer. These slabs will be found mainly over crusts or wind effect however surface hoar and facets were buried as well and would warrant more caution.
Recent storm snow is settling into a persistent slab which sits on the Dec 15 surface hoar. Expect the slab to be more sensitive as you transition into steep and/or wind effected terrain. Solar aspects have a thin crust layer below the slab.
15-35km/hr variable winds are forming pockets of wind slab in exposed areas in the alpine and at tree line. These slabs may have surface hoar or crust underneath, leading them to be sensitive to human triggering.
Small amounts of recent snow has been blown into thin windslabs over the Dec 18 drought layer. These slabs will be found mainly over crusts or wind effect however surface hoar and facets were buried as well and would warrant more caution.
Wind slabs are present in alpine lee areas. So far these have been small and slow to move when triggered, but they could be a concern in steep confined terrain.
The cold temperatures are facetting the surface snow and allowing loose dry avalanches to run further than expected in steep terrain. So far they are still very small, but stay aware of this in confined gullies or when skiing steep terrain.
Wind slabs are present in alpine lee areas. So far these have been small and slow to move when triggered, but they could be a concern in steep confined terrain.
The cold temperatures are facetting the surface snow and allowing loose dry avalanches to run further than expected in steep terrain. So far they are still very small, but be aware of this in confined gullies like ice climbs or in steep ski terrain.
40-50cm of snow is settling into a persistent slab which sits on the Dec 15 surface hoar. Expect the slab to be more reactive as you transition into steep and/or wind effected terrain. Solar aspects have a thin crust layer below the slab.
Recent variable winds formed pockets of wind slab in the alpine and exposed areas at tree line on all aspects. These slabs may have surface hoar or crust underneath, leading them to be sensitive to human triggering.
Strong winds have scoured wind exposed terrain down to valley bottom. Wind slabs could likely be found on immediate lee slopes at all elevations.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B"> </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Small amounts of recent snow has been blown into thin windslabs over the Dec 18 drought layer. These slabs will be found mainly over crusts or wind effect however surface hoar and facets were buried as well and would warrant more caution.
Wind slabs are present in alpine lee areas. So far these have been small and slow to move when triggered, but they could be a concern in steep confined terrain.
The cold temperatures are facetting the surface snow and allowing loose dry avalanches to run further than expected in steep terrain. So far they are still very small, but stay aware of this in confined gullies or when skiing steep terrain.
Wind slabs are present in alpine lee areas. So far these have been small and slow to move when triggered, but they could be a concern in steep confined terrain.
The cold temperatures are facetting the surface snow and allowing loose dry avalanches to run further than expected in steep terrain. So far they are still very small, but stay aware of this in confined gullies or when skiing steep terrain.
30-50cm of snow is settling into a persistent slab which sits on the Dec 15 surface hoar. Expect the slab to be more reactive as you transition into steep and/or wind effected terrain. Solar aspects have a thin crust layer below the slab.
Variable winds formed pockets of wind slab in the alpine and exposed areas at tree line on all aspects. These slabs may have surface hoar or crust underneath, leading them to be sensitive to human triggering.
Isolated pockets persist by are becoming less and less reactive with ongoing cold temps.
Wind slabs are present in alpine lee areas. So far these have been small and slow to move when triggered, but they could be a concern in steep confined terrain.
The cold temperatures are facetting the surface snow and allowing loose dry avalanches to run further than expected in steep terrain. So far they are still very small, but stay aware of this in confined gullies or when skiing steep terrain.
Wind slabs are present in some alpine lee areas. So far these have been small, but they could be a concern in steep confined terrain.
The cold temperatures are facetting the surface snow and allowing loose dry avalanches to run further than expected in steep terrain. So far they are still very small, but be aware of this in confined gullies or when skiing steep terrain.
30-50cm of snow is settling into a persistent slab which sits on the Dec 15 surface hoar. Expect the slab to be more reactive as you transition into steep and/or wind effected terrain. Solar aspects have a thin crust layer below the slab.
Variable winds formed pockets of wind slab in the alpine and exposed areas at tree line on all aspects. These slabs may have surface hoar or crust underneath, leading them to be sensitive to human triggering.
Reports of small windslabs continue to come from the ski resorts teams - isolated to near rocky areas. These have been small but running a fair way down the path.
The cold temperatures are facetting the surface snow and allowing loose dry avalanches to run further than expected in steep terrain. Manage your sluffs if skiing steep terrain and heads up for big spindrift if climbing in gullies.
Reports of small windslabs continue to come from the ski resorts teams - isolated to near rocky areas. These have been small but running a fair way down the path.
The cold temperatures are facetting the surface snow and allowing loose dry avalanches to run further than expected in steep terrain. Manage your sluffs if skiing steep terrain and heads up for big spindrift if climbing in gullies.
Isolated pockets persist by are becoming less and less reactive with ongoing cold temps.
Variable winds formed wind slab in the alpine and exposed areas at tree line on all aspects. These slabs may have surface hoar or crust underneath, small lenses may be sensitive to human triggering.
40cm+ of snow is settling into a persistent slab which sits on the Dec 15 surface hoar. Expect the slab to possibly be reactive on steep unsupported and/or wind effected terrain. Solar aspects have a thin crust layer below the slab.
The cold temperatures have facetted the surface snow, and once initiated can travel far.&nbsp; Manage your sluffs if skiing steep terrain and heads up for big spindrift if climbing in gullies.
The cold temperatures have facetted the surface snow, and once initiated can travel far. Manage your sluffs if skiing steep terrain and heads up for big spindrift if climbing in gullies.
Isolated pockets will persist in typical areas of the Alpine like ridge tops, exposed features, or ledges above ice climbs.
With 20cm of new cold dry powder, natural and human triggered avalanches are expected in steep terrain. It is possible for small loose avalanches to trigger deeper instabilities, especially near ridge lines or where Dec 15 surface hoar is preserved.
The December 15 surface hoar layer is widespread around treeline and buried 60cm. Cold temps have kept the slab from gaining cohesion, but it may be reactive on steep unsupported and/or wind affected terrain.
The cold temperatures have facetted the surface snow, and once initiated these sluffs can pick up mass and travel far. A heads up for big sluffs if you are climbing in gullies with steep terrain above, or skiing steep lines.
The cold temperatures have facetted the surface snow, and once initiated these sluffs can pick up mass and travel far. A heads up for big sluffs if you are climbing in gullies with steep terrain above, or skiing steep lines.
Isolated pockets of hardslab found in the typical areas of the Alpine like ridge tops, exposed features, or ledges above ice climbs. These may have been buried by a few cm and will be a bit harder to detect
Deep surface snow with little cohesion is draped across the park.  A puff of wind, spike of sun, or your own wading could be enough to set it in motion.
Exposed areas saw wind transport Thursday night, and may do on Friday night also - just enough to set up isolated storm slabs in unusual (South and West facing) lee features.  These could be reactive; particularly on Saturday, and during midday sun.
The 30cms of recent storm snow will remain touchy for loose avalanches in steep terrain. With all the available fetch, strong Northerly winds will have created soft slabs on lee slopes.&nbsp; Avalanches will have the potential to reach runouts today.
The December 15 surface hoar layer is widespread around treeline and buried 60cm. Cold temps have kept the slab from gaining cohesion, but it may be reactive on steep unsupported and/or wind affected terrain.
The cold temperatures have facetted the surface snow, and once initiated these sluffs can pick up mass and travel far. A heads up for big sluffs if you are climbing in gullies with steep terrain above, or skiing steep lines.
So far these are small in size as they are just forming, but most wind slabs formed will be lying over facets and may run far. 
The cold temps have facetted the surface snow, and once initiated these sluffs can pick up mass and travel far. A heads up for big sluffs if you are climbing in the bigger gully features in Field with steep terrain above, or skiing steep lines.
So far these are small in size as they are just forming, but most wind slabs formed will be lying over facets and may run far.
Isolated pockets of hardslab found in the typical areas of the Alpine like ridge tops, exposed features, or ledges above ice climbs. These may have been buried by&nbsp; up to 10 cm and will be a bit harder to detect.
The 25cms of recent storm snow along with the available fetch and recent strong winds will have created pockets of slab on lee slopes. Based on observations yesterday, avalanches have the potential to reach out into runout zones.
The December 15 surface hoar layer is widespread around treeline and buried 60cm. Cold temps have kept the slab from gaining cohesion, but it may be reactive on steep unsupported and/or wind affected terrain.
The cold temperatures have facetted the surface snow, and once initiated these sluffs can pick up mass and travel far. A heads up for big sluffs if you are climbing in gullies with steep terrain above, or skiing steep lines.
So far these are small in size as they are just forming, but most wind slabs formed will be lying over facets and may run far.
The cold temperatures have facetted the surface snow, and once initiated these sluffs can pick up mass and travel far. A heads up for big sluffs if you are climbing in gullies with steep terrain above, or skiing steep lines.
So far these are small in size as they are just forming, but most wind slabs formed will be lying over facets and may run far.
The 25cms of recent storm snow along with the available fetch and recent strong winds will have created pockets of slab on lee slopes. Based on observations Dec 30, avalanches have the potential to reach out into runout zones.
The December 15 surface hoar layer is widespread around treeline and buried 60cm. Cold temps have kept the slab from gaining cohesion, but a warming trend may make it more reactive especially on steep unsupported and/or wind affected terrain.
The cold temperatures have facetted the surface snow, and once initiated sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines.
Because of surface faceting they have the potential to run far. LLSA area report very small and thin windslabs that are variable in distribution on Jan 1, 2018.
The cold temperatures have facetted the surface snow, and once initiated sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines.
Distribution is variable. Because of surface faceting they have the potential to run far.
The December 15 surface hoar layer is widespread around treeline and buried 60cm. Cold temps have kept the slab from gaining cohesion, but today's warming trend may make it more reactive especially on steep unsupported terrain.
We may see a natural loose dry cycle on steep solar aspects today, with solar radiation and an inversion. The combination of a loose sluff, plus a skier or rider could be the load for a step-down slab avalanche to the Dec 15th persistent weak layer.
The cold temperatures have facetted the surface snow, and once initiated sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines.
Distribution is variable and their seems to be little pattern to their location. Not much of a problem but we have seen a few. Because of surface faceting they have the potential to run far.
The cold temperatures have facetted the surface snow, and once initiated sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines.
Hard to describe the location of these as they appear quite random, but they exist so watch for them. Due to the surface faceting they have the potential to run far.
The December 15 surface hoar layer is widespread around treeline and buried 60cm. Cold temps have kept the slab from settling and gaining cohesion, limiting natural and skier triggered avalanches so far.
We may see a natural loose dry cycle on steep solar aspects if the sun does come out today.
Expect point release sluffing from steep terrain, particularly mid-afternoon.
Be aware of steep gully features that may be loaded enough to release a small slab.
The cold temperatures have facetted the surface snow, and sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines. Heads up on solar aspects in particular
Moderate winds on Jan. 1st created hard windslabs in exposed alpine areas. In places, these sit on a layer of facets from the christmas cold snap and were reactive to skiier traffic in the Lake Louise Backountry on Jan. 2nd.
The cold temperatures have facetted the surface snow, and sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines. Heads up on solar aspects in particular
Moderate winds on Jan. 1st created hard windslabs in exposed alpine areas. In places, these sit on a layer of facets from the christmas cold snap and were reactive to skiier traffic in the Lake Louise Backountry on Jan. 2nd.
The December 15 surface hoar layer is widespread around treeline and buried 60cm. Cold temps have kept the slab from settling and gaining cohesion however this is expected to change with the warming trend.
We may see a natural loose dry cycle on higher elevation steep solar aspects if the sun does come out today. These may be triggered naturally or from skier traffic.
The cold temperatures have facetted the surface snow, and sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines. Heads up on solar aspects in particular.
Moderate winds on Jan. 1st created hard windslabs in exposed alpine areas. In places, these sit on a layer of facets from the christmas cold snap and were reactive to skiier traffic in the Lake Louise Backountry on Jan. 2nd.
The cold temperatures have facetted the surface snow, and sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines. Heads up on solar aspects in particular
Moderate winds on Jan. 1st created hard windslabs in exposed alpine areas. In places, these sit on a layer of facets from the christmas cold snap and were reactive to skier traffic in the Lake Louise Backcountry on Jan. 2nd.
Expect point release sluffing from steep terrain.
Be aware of steep gully features that may be loaded enough to release a small slab.
Strong winds have deposited snow into gullies and bowls
The cold temperatures have facetted the surface snow, and sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines. Heads up on solar aspects in particular.
Moderate winds have created hard windslabs in exposed alpine areas. In places, these sit on a layer of facets from the christmas cold snap and were reactive to skiier traffic in the Lake Louise Backountry on Jan. 2nd.
The cold temperatures have facetted the surface snow, and sluffs can pick up mass and travel far. Big sluffs are possible if you are climbing in gullies with steep terrain above, or skiing steep lines. Heads up on solar aspects in particular
Moderate winds have created hard windslabs in exposed alpine areas. In places, these sit on a layer of facets from the christmas cold snap and were reactive to skier traffic in the Lake Louise Backcountry on Jan. 2nd.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Main concern is for weak, unconsolidated snow on steep rocky features as well as areas in the alpine where a small sluff can build mass.</span><span class="s_AA239
Be aware of steep gully features that may be loaded enough to release a small slab.
Loose snow will continue to be a problem in steep rocky areas and gullies until the facets round out a bit.
Previous new snow is being moved by the chinook winds, continuing snowfall and wind over the next few days will likely make the problem worse.
Loose snow will continue to be a problem in steep rocky areas and gullies until the facets round out a bit.
Previous new snow is being moved by the chinook winds, continuing snowfall and wind over the next few days will likely make the problem worse.
="s_3FE45715">Main concern is for weak, unconsolidated snow on steep rocky features as well as areas in the alpine where a small sluff can build mass.
Be aware of steep gully features that may be loaded enough to release a small slab.
Recent snow is being moved around by the SW winds and forming thin wind slabs in immediate lee areas. These slabs can fail on the either the weak facets or the Dec 15 layer, and have been triggered by climbers and skiers in the last few days.
Loose dry surface snow avalanches will continue to be a problem in steep rocky areas and gullies until the facets round out and begin to bond better.
Several layers of wind slab exist from multiple wind events - reactivity may vary from site to site.
="s_3FE45715">Main concern is for weak, unconsolidated snow on steep rocky features as well as areas in the alpine where a small sluff can build mass.
Recent snow is being moved around by the SW winds and forming thin wind slabs in immediate lee areas. These slabs can fail on the either the weak facets or the Dec 15 layer, and have been triggered by climbers and skiers in the last few days.
Loose dry surface snow avalanches will continue to be a problem in steep rocky areas and gullies until the facets round out and begin to bond better.
30cm of snow over the past 48hrs is settling into a soft slab with warm winters temps (-1 to -5). The Jan 4 surface hoar is down ~35cm and found to be up to 15mm in size. If triggered, small avalanches could initiate deeper layers.
Caution when the new snow becomes stiff and develops into a slab.
Recent snow is being moved around by the SW winds and forming thin wind slabs in immediate lee areas. These slabs can fail on the either the weak facets or the Dec 15 layer, and have been triggered by climbers and skiers in the last few days.
Loose dry surface snow avalanches will continue to be a problem in steep rocky areas and gullies until the facets round out and begin to bond better. Additionally, we have small amounts of new low density snow adding to the problem.
Recent snow is being moved around by the SW winds and forming thin wind slabs in immediate lee areas. These slabs can fail on the either the weak facets or the Dec 15 layer, and have been triggered by climbers and skiers in the last few days.
Loose dry surface snow avalanches will continue to be a problem in steep rocky areas and gullies until the facets round out and begin to bond better. Additionally, we have small amounts of new low density snow adding to the problem.
Thin old windslabs remain a concern TL and above where they sit over weak faceted snow and surface hoar. While these are spotty and small at TL, these limit confidence in the alpine with the potential for larger slabs in bigger, more uniform terrain.
40+cm of storm snow over the past 48hrs is settling into a slab with warm temperatures (-1 to -5). The Jan 4 surface hoar is down ~45cm and found to be up to 15mm in size. If triggered, small avalanches could step down to the Dec 15th PWL!
New and building windslab is sitting on a weak, and typically reactive interface on exposed alpine and TL features. Bigger, uniform, and isolated open features have the potential to trigger large avalanches and should be treated very cautiously.
Recent and forecasted snow will be moved around by the SW winds and forming fresh wind slabs in the alpine. These slabs can fail on the the Dec 15 interface which is showing easy to moderate shears.
Recent snow is being moved around by the SW winds and forming fresh wind slabs in lee alpine areas. These slabs can fail on the the Dec 15 layer which is producing easy to moderate shears.
Loose dry surface snow avalanches will continue to be a problem in steep rocky areas and gullies.
45cm of recent storm snow is settling into a slab assisted by warm temperatures (-1 to -5). The Jan 4 surface hoar is down ~45cm and found to be up to 15mm in size. If triggered, small avalanches could step down to the Dec 15th PWL with big results.
New snow covers pockets of old wind slabs on a weak interface in exposed alpine and TL features. Bigger, uniform features have the potential to trigger large avalanches and should be treated with caution.
="s_3FE45715">New snow covers a facetted/weak upper snowpack in sheltered areas. Be cautious in very steep terrain and in confined features where a small sluff could build mass.
Recent snow is being moved around by the SW winds and forming fresh wind slabs in lee alpine areas. These slabs can fail on the the Dec 15 layer which is producing easy to moderate shears.
Loose dry surface snow avalanches will continue to be a problem in steep rocky areas and gullies.
Recent snow will be moved around by the SW winds and forming fresh wind slabs in the alpine. These slabs &amp; loading may be enough to overload Dec 15 interface which is showing easy to moderate shears. but the balance has not yet tipped...
45cm of recent storm snow has settled into a slab. The Jan 4 surface hoar is down ~45cm and found to be up to 15mm in size. If triggered, avalanches could step down to the Dec 15th PWL with potential for large avalanches.
The Dec 15th PWL is widespread around tree line and below tree line, buried ~100cm. Previous warm temps have slabbed up the upper snow pack. This interface is reactive with skier remote slides Wednesday and a skier buried in a terrain trap on Monday.
There is a dangerous weak layer down 30-60 cm but it needs a stiffer slab overlying it for the avalanche to occur. We are &quot;almost&quot; at that tipping point so be very careful with this layer and travel conservatively even if you observe no avalanches.
Soft windslabs formed during the last storm exist near ridge crests and under cliff bands. Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow.
There is a dangerous weak layer down 30-40 cm but it needs a stiffer slab overlying it for the avalanche to occur. We are &quot;almost&quot; at that tipping point so be very careful with this layer and travel conservatively even if you observe no avalanches.
Soft windslabs formed during the last storm exist near ridge crests and under cliff bands. Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow.
New snow covers pockets of old windslab sitting on weak, faceted snow that lacks strength, and may fail, to midpack depths. Treat all wind exposed areas with care but approach larger, uniform features and thin areas should be treated with caution.
The new snow has already formed thin, spotty slabs even with the limited amount of wind we have seen so far. These slabs sit on freshly buried, weak facets and surface hoar in some areas. Watch for these slabs to develop with more wind Saturday.
="s_3FE45715">New snow covers a facetted/weak upper snowpack in sheltered areas. Be cautious in very steep terrain and in confined features where a small sluff could build mass. Even light winds were triggering these events along alpine ridges Thursday.
A reactive storm slab sits atop the Jan 4 surface hoar interface. The slab is poorly bonded where the surface hoar is well preserved. If triggered, avalanches could step down to the Dec 15th persistent weak layer causing very large slides.
There is a dangerous weak layer down 30-40 cm but it needs a stiffer slab overlying it for the avalanche to occur. We are &quot;almost&quot; at that tipping point so be very careful with this layer and travel conservatively even if you observe no avalanches.
Soft windslabs formed during the last storm exist near ridge crests and under cliff bands. Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow.
There is a dangerous weak layer down 30-60 cm but it needs a stiffer slab overlying it for the avalanche to occur. We are &quot;almost&quot; at that tipping point so be very careful with this layer and travel conservatively even if you observe no avalanches.
Soft windslabs formed during the last storm exist near ridge crests and under cliff bands. Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow.
New snow covers pockets of old slab sitting on weak, faceted snow that lacks strength, and may fail, to mid-pack depths. Treat all wind exposed areas with care but approach larger, uniform features and thin areas with caution.
The new snow has already formed thin, spotty slabs even with the limited amount of wind we have seen so far. These slabs sit on freshly buried, weak facets and surface hoar in some areas. Watch for these slabs to develop with more wind Saturday.
="s_3FE45715">New snow covers a facetted/weak upper snowpack in sheltered areas. Be cautious in very steep terrain and in confined features where a small sluff could build mass. Even light winds were triggering these events along alpine ridges Thursday.
A reactive storm slab continues to build &amp; warming temps in the next couple days will make it more touchy. The slab is poorly bonded in areas where the Jan 4 surface hoar is well preserved. If triggered avalanches could step down to the Dec 15th PWL.
New snow covers pockets of old slab found in exposed areas that sit on weak, faceted snow that lacks strength, and may fail, to mid-pack depths. Treat all wind exposed areas with care but approach larger, uniform features and thin areas with caution.
The new snow has been redistributed into thin, spotty slabs in exposed areas. These slabs sit on freshly buried, weak facets and surface hoar in some areas. Triggering one of these slabs may provide enough load to trigger the deeper persistent slab.
="s_3FE45715">New snow covers a facetted and weak upper snowpack in sheltered areas. Be cautious in very steep terrain and in confined features where a small sluff could build mass. Consider the potential for these small sluffs to trigger slabs TL and above.
New wind slabs have formed during the last 24 hrs in the alpine and near ridge crests at treeline. Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow over weaker snow.
There is a dangerous weak layer down 30-40 cm and the slab overlying it is becoming stiff enough for avalanches to occur. Be very careful with this layer and travel conservatively even if you observe no avalanches.
There is a widespread weak layer of surface hoar from Dec 15th down 40-60 cm with a stiff enough slab over it to start producing avalanches. Be very careful and travel conservatively even if you observe no avalanches.
New wind slabs were forming at treeline and in the alpine Saturday with the moderate to strong West winds and warmer temperatures. Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow over weaker snow.
A reactive slab continues to settle, warming temps in the next couple days will make it more touchy. The slab is poorly bonded in areas where the Jan 4 surface hoar is well preserved. If triggered avalanches could step down to the Dec 15th PWL.
Wind slabs have formed in the alpine and near ridge crests at treeline. Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow over weaker snow.
This layer continues to linger in forecasters minds. Easy test results and report of significant whumps and cracks show the potential for this to be a dangerous problem. Be very careful with this layer and travel conservatively.
There is a widespread weak layer of surface hoar from Dec 15th down 40-60 cm with a stiff enough slab over it to start producing avalanches. Be very careful and travel conservatively even if you observe no avalanches.
Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow over weaker snow.
Pockets of old, buried slab are found in exposed areas. These sit on weak, faceted snow that lacks strength, and may fail, to mid-pack depths. Treat all wind exposed areas with care but approach larger, uniform features and thin areas with caution.
Sunday's cycle of these will likely result in crust limiting the further potential of this problem however temperatures seem a bit uncertain and if the sun is out again, it is worth taking note.
The recent snow was redistributed into thin, spotty slabs in exposed areas. These slabs sit on freshly buried, weak facets and surface hoar in some areas. Triggering one of these slabs may provide enough load to trigger the deeper persistent slab.
A temperature inversion kept alpine temperatures near or above zero degrees over night, the snowpack will weaken quickly with the suns effect. A natural avalanche cycle was observed yesterday afternoon from steep, rocky terrain on solar aspects.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
The Jan 4th and Dec 15 surface hoar layers are widespread around tree line and below, buried ~60cm and ~90cm respectively. The forecasted warm temps will further slab up the upper snow pack and avalanche activity is expected throughout the day. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Wind slabs are present in the alpine and near ridge crests at treeline in isolated areas. Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow over weaker snow.
This layer continues to be the cause of much uncertainty with forecasters. Easy test results and report of significant whumps and cracks show the potential for this to be a dangerous problem. It is present and reactive in some areas, not in others.
Wind slabs are present in the alpine and near ridge crests at treeline in isolated areas. Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow over weaker snow.
This layer is a concern mainly at treeline. Easy test results and reports of significant whumps and cracks show the potential for this to be a dangerous problem. Exercise a high degree of caution on uniform open features at treeline.
Natural point release avalanches continued on Monday - loose dry on NE aspects and loose wet on solar aspects. This natural activity is expected to continue on Tuesday.
The recent snow was redistributed into thin, spotty slabs in exposed areas. These slabs sit on freshly buried, weak facets and surface hoar in some areas.
Isolated slab avalanches to size 2 were reported by field teams, which were triggered by loose snow avalanches from the cliffs above the start zones.
The Jan 4 and Dec 15 surface hoar layers are down ~60cm and ~90cm respectively. These layers are widespread at treeline. A receding weak temp inversion and mainly cloudy conditions should reduce reactivity compared to recent days.
Natural point release avalanches remain a concern particularly in terrain traps or confined gullies. Surface snow remains loosely consolidated and ripe for entraining snow if initiated. New snow next few days will add to this concern.
Snow was redistributed into thin, spotty slabs in exposed areas. These slabs sit on freshly buried, weak facets and surface hoar in some areas. 
Isolated slab avalanches to size 2 were reported by field teams on Monday. They were triggered by loose snow avalanches from the cliffs above and solar input.
This layer continues to be the cause of much uncertainty with forecasters - we think its bad, but yet it has not yet produced many large avalanches. We remain uneasy about it despite indications of generally good conditions.
The Jan 4 and Dec 15 surface hoar layers are down ~65cm and ~95cm respectively. These layers are widespread at treeline. 10cm storm snow in the last 24hrs will add load to the slab over these weak layers.
10cm of storm snow accompanied by mod-strong S'ly winds have formed fresh storm slab at and above treeline. These slabs reside on a variety of surfaces such as small surface hoar, temperature crust and sun crust.
This layer continues to be the cause of much uncertainty with forecasters - we think its bad, but yet it has not yet produced many large avalanches. We remain uneasy about it despite indications of generally good conditions.
New snow and accompanying winds usually create windslabs near ridge crests on lee slopes.
New snow and moderate to strong SW winds will rapidly build new windslabs. Forecasted amounts are uncertain, and hazard will be directly related to the amount of snow that arrives.
Isolated slab avalanches to size 2 were reported by field teams on Monday. They were triggered by loose snow avalanches from the cliffs above and solar input. The concern is that additional load may increase activity on midpack weak layers.
New snow and wind are expected to create new windslabs on lee slopes near ridgecrests
Yesterday's field info found remote triggering the surface slab in some locations and no slab in others. Warming temps, more new snow and mod S-SW winds will increase the density  of the slab and sensitivity of the layer to human triggering.
The Jan 4 and Dec 15 surface hoar layers are down ~70cm and ~100cm respectively. These layers are widespread at treeline. 20cm storm snow in the last 24hrs will add load to the slab over these weak layers.
New snow and accompanying winds have created windslabs at alpine and treeline elevations. Due to variable winds in the alpine expect the spacial distribution of this problem to be widespread.
This layer continues to be the cause of much uncertainty with forecasters - we think its bad, but yet it has not yet produced many large avalanches. We remain uneasy about it despite indications of generally good conditions.
Recent snow and accompanying winds have created windslabs at alpine and treeline elevations. Due to variable winds in the alpine expect the spacial distribution of this problem to be widespread.
The Dec 15 layer continues to cause some uncertainty with forecasters. Few avalanche observations have been reported on this instability, though widespread cracking and whumphing is still occurring when traveling in the backcountry.
Recent winds and snow have formed slabs in immediate lees.&nbsp; Pay attention to the surface texture and local wind transport as these will be the biggest indicator of their formation.
5-10cm of storm snow has been pushed into fresh windslabs. The concern is for areas where these slabs overlay a couple layers of surface hoar in the top 30cm of the snowpack. Field teams found touchy new slabs in the Hilda Creek drainage.
There are 3 distinct surface hoar layers in the top 40cm of the snowpack. These layers are expected to become more reactive to natural and human triggers with the additional snow load leading into the weekend.
5-10cm of storm snow has been pushed into fresh windslabs. The concern is for areas where these slabs overlay a couple layers of surface hoar in the top 30cm of the snowpack. Field teams found touchy new slabs in the Hilda Creek drainage.
There are 3 distinct surface hoar layers in the top 40cm of the snowpack. These layers are expected to become more reactive to natural and human triggers with the additional snow load leading into the weekend.
5-10cm of storm snow has been pushed into fresh windslabs. The concern is for areas where these slabs overlay a couple layers of surface hoar in the top 30cm of the snowpack. Field teams found touchy new slabs in the Hilda Creek drainage.
There are 2 distinct surface hoar layers in the top 40cm of the snowpack. These layers are expected to become more reactive to natural and human triggers with the additional snow load leading into the weekend.
The Jan 16 surface hoar is widespread and buried 30cm. Incremental loading combined with wind action has led to slab development over this weak interface. The January 4th surface hoar is down 60cm and could be triggered by a storm slab avalanche.
The Dec 15th layer is down 100cm. After a month under the snow, this surface hoar remains widespread and well-preserved. Daily snowfalls add up. This incremental loading can increase the sensitivity of deep layers that may be forgotten, but not gone.
Previous strong Southerly winds combined with recent new snow has led to surface slab development. This buries the Jan 16 surface hoar layer which is widespread and found down 30cm. Slabs triggered over this weak layer could propagate far.
The January 4th surface hoar is down 60cm and the Dec 15th layer is down 100cm. After a month under the snow, this surface hoar remains widespread and well-preserved. These layers should not be overlooked and could be more sensitive in thin areas.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Previous strong south winds combined with recent new snow has built surface slab. This buries the Jan 16 surface hoar which is widespread and found down 40cm. Slabs triggered over this </span><a href="https://www.facebook.com/ParksMountainSafety/videos/1546933272023323/" target="_blank"><span class="s_9255B882">weak layer</span></a><span class="s_AA239A9B"> could propagate far and trigger deeper layers.
The January 4th surface hoar is down 60cm and the Dec 15th layer is down 100cm. After a month under the snow, this surface hoar remains widespread and well-preserved. These layers should not be overlooked and could be more sensitive in thin areas.
Anticipate and be aware of wind-loaded pockets at tree-line and above.
New snow and wind are have created new windslabs on lee slopes at alpine and treeline elevations. Due to variable winds in the alpine expect the spacial distribution of this problem to be widespread.
Recent snow and wind are have created new windslabs on lee slopes at alpine and treeline elevations. Due to variable winds in the alpine expect the spacial distribution of this problem to be widespread.
Recent snow and wind are have created new windslabs on lee slopes at alpine and treeline elevations. The winds have been from many different directions over the past few days and have formed these slabs on numerous aspects. 
Previous wind events with only light snow has buried two SH layers. New surface windslab sits on the Jan 17 FC/SH. This builds on a now buried windslab over the Jan 7 SH for a total slab size of 20 to 40 cm. 
There has been few observations of activity on this layer recently. Suspect this is slower to heal in the alpine.
Recent snow and wind are have created new windslabs on lee slopes at alpine and treeline elevations. The winds have been from many different directions over the past few days and have formed these slabs on numerous aspects.
Recent winds and snow have formed wind slabs in immediate lee areas and caused sluffing in steep rocky terrain. Pay attention to the surface texture and local wind transport patterns as these will be the biggest indicator of the wind slab problem.
The Dec 15 surface hoar/facet layer continues to cause concern with forecasters. Only a few avalanche observations have been reported on this layer recently, but widespread cracking and whumphing is still occurring when traveling in the back country.
Strong south winds combined with recent new snow has formed pockets of wind slab. This buries the Jan 16 surface hoar which is widespread and found down ~50cm. Slabs triggered over this weak layer could propagate far and trigger deeper layers.
The January 4th surface hoar is down 70cm and the Dec 15th layer is down 100cm. After a month under the snow, this surface hoar remains widespread and well-preserved. These layers should not be overlooked and could be sensitive in thin areas.
Recent winds and snow have formed wind slabs in immediate lee areas and caused sluffing in steep rocky terrain. Pay attention to the surface texture and local wind transport patterns as these will be the biggest indicator of the wind slab problem.
There are 3 weak layers in the upper snowpack: Jan 16, Jan 6, and Dec. 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Whumphing is occurring on these layers daily and step down avalanches are possible
Recent snow and wind are have created new windslabs on lee slopes in the alpine.
There are 3 weak layers in the upper snowpack: Jan. 16, Jan 6 and Dec. 15. They are a mix of sun crust, facets and surface hoar depending on aspect and elevation. Avalanches initiated in any of these layers will likely step down to the Dec. 15 layer
This layer is primarily weak facets and had easy failures at treeline in test profiles today down 40 to 50cm.
Small inputs of fresh storm snow with southwesterly winds continue to build small lenses of windslab in sheltered lee features.
Storm slabs will be most prevalent in areas exposed to the wind and steep unsupported convexities, where there's tension on the snowpack. Storm slabs triggered could step down to deeper layers.
Forecasted wind and snow will form another layer of windslabs in lee features.&nbsp; Pay attention to the surface texture and local wind transport patterns as these will be the biggest indicator of the wind slab problem.
There are 3 weak layers in the upper snowpack: Jan 16, Jan 6, and Dec. 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Whumphing is occurring on these layers daily and step down avalanches are possible
Recent snow and wind are have created new windslabs on lee slopes in the alpine.
There are 3 weak layers in the upper snowpack: Jan. 16, Jan 6 and Dec. 15. They are a mix of sun crust, facets and surface hoar depending on aspect and elevation. Avalanches initiated in any of these layers will likely step down to the Dec. 15 layer
This problem slab is made up of 3 significant interfaces. From top down, Jan 18 FC, dwn 15cm. Jan 7 FC/SH, dwn 20, and finally the Dec 18th interface 30 to 50cm down. All interfaces seem to be slowly healing but, inconsistent sensitivity to triggers. 
Small inputs of fresh storm snow with southwesterly winds continue to build small lenses of windslab in sheltered lee features at ridge crests.
Storm slabs sit on a layer of surface hoar and/or a thin crust. They will be most sensitive in areas exposed to wind and unsupported convexities, where there's tension in the snowpack. Storm slabs triggered could step down to deeper weak layers.
With up to 60cm snow over the past 8-days there is plenty of loose snow available to be blown into windslabs which should be anticipated in alpine areas near ridge crests. These windslabs should be easy to trigger on skis.
There are 3 weak layers in the upper snowpack: Jan 16, Jan 6, and Dec. 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Whumphing is occurring on these layers daily and step down avalanches are possible
With up to 60cm snow over the past 8-days there is plenty of loose snow available to be blown into windslabs which should be anticipated in alpine areas near ridge crests. These windslabs should be easy to trigger on skis.
There are 3 weak layers in the upper snowpack: Jan 16, Jan 6, and Dec. 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Whumphing is occurring on these layers daily and step down avalanches are possible
Small inputs of fresh storm snow with southwesterly winds will continue to build layers of windslab in lee features at ridge crests and open areas at TL and above.
This problem is made up of 3 significant interfaces in the top 30-50cm of the snowpack.  All interfaces seem to be slowly healing but have shown recent sensitivity to light loads in isolated locations.
Soft storm slabs sit on a layer of surface hoar and/or a thin crust. They will be most sensitive in areas exposed to wind and unsupported convexities, where there's tension in the snowpack. Storm slabs triggered could step down to deeper weak layers.
This problem is made up of 3 significant interfaces in the top 30-50cm of the snowpack. All interfaces seem to be slowly healing but have shown recent sensitivity to light loads in isolated locations.
Last week's storm snow with southwesterly winds will continue to build layers of windslab in lee features at ridge crests and open areas at TL and above.
There are 3 weak layers in the upper snowpack: Jan 16, Jan 6, and Dec. 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers
With up to 75cm of snow over the past 9-days there is plenty of wind slab development available to be blown into touchy windslabs which should be anticipated in alpine and treeline areas.
20 cm of new snow overnight and strong winds triggered a natural avalanche cycle today. Many avalanches failed as windslabs and stepped down to the deeper persistent weak layers.
There are 3 weak layers in the upper snowpack: Jan 16, Jan 6, and Dec. 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Recent loading has overloaded these layers and we are seeing avalanche running far.
Recent moderate southerly winds have redistributed storm snow into wind slab. The slab will be most sensitive in lee areas at ridge line and exposed areas at tree line. If triggered, the slab could step down to deeper weak layers.
There are 3 weak layers in the upper snowpack: Jan 16, Jan 6, and Dec. 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers
With up to 75cm of snow over the past 9-days there is plenty of wind slab development available to be blown into touchy windslabs which should be anticipated in alpine and treeline areas.
Lots of recent new snow and winds have created touchy wind slabs in lees.&nbsp; Yesterday, an avalanche cycle saw many avalanches failing as windslabs and then stepping down to the deeper persistent weak layers
There are 3 weak layers in the upper snowpack: Jan 16, Jan 6, and Dec. 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Recent loading has overloaded these layers and we are seeing avalanche running far.
This problem is made up of 3 significant interfaces in the top 30-50cm of the snowpack and deeper in isolated wind loaded locations. These slabs have been active to skier testing and explosive control work  producing a few very significant results.
Last week's storm snow with southwesterly winds has built soft slabs in open features. These were reactive Thursday, failing as small sluffs out of cliff terrain hit the slope.
Previous moderate southerly winds have redistributed storm snow into pockets of wind slab. The slab will be most sensitive in lee areas at ridge line and exposed areas at tree line. If triggered, the slab could step down to deeper weak layers.
This problem is made up of 3 significant interfaces in the top 30-50cm of the snowpack but may be seen deeper in wind loaded locations. These slabs have been active to skier testing and explosive control work producing a few very significant results.
Last week's storm snow, combined with southwesterly winds, has built soft slabs in open features. These slabs failed when small sluffs, out of very steep lee terrain, hit the slope.
There are three weak layers in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers and human triggering is likely.
Recent winds and new snow have formed slabs in leeward areas of alpine and treeline terrain, and caused natural avalanches and small cornice failures. These slabs are starting to bond but can still be triggered and may step down to persistent layers.
There are three weak layers in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers and human triggering is likely.
Recent winds and new snow have formed slabs in leeward areas of alpine and treeline terrain, and caused natural avalanches and small cornice failures. These slabs are starting to bond but can still be triggered and may step down to persistent layers.
Moderate southerly winds have redistributed storm snow into pockets of wind slab. The slab will be most sensitive in lee areas at ridge line and exposed areas at tree line. If triggered, the slab could step down to deeper weak layers.
Incoming new snow and wind will build fresh storm slabs. If triggered these may step down and trigger the persistent weaknesses in the upper snowpack.
This problem is made up of 3 significant interfaces in upper snowpack. Incoming new snow may overload these layers, which have recently been reactive to skier testing and explosive control work, producing a few very significant results.
Watch for sluffing in steep terrain.
There are three weak layers in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers and human triggering is likely.
Recent winds and new snow have formed slabs in leeward areas of alpine and treeline terrain, and caused natural avalanches and small cornice failures. These slabs are starting to bond but can still be triggered and may step down to persistent layers.
There are three weak layers in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers and human triggering is likely.
Recent winds and new snow have formed slabs in leeward areas of alpine and treeline terrain, and caused natural avalanches and small cornice failures. These slabs are starting to bond but can still be triggered and may step down to persistent layers.
Heavy snowfall and warming temperatures will create a reactive storm slab. If triggered, the slab could step down to deeper weak layers. With steady snowfall accumulation in the last week expect to see avalanches gaining mass and running far.
There are three weak layers in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers and human triggering is likely.
Recent winds and new snow have formed slabs in leeward areas of alpine and treeline terrain, and caused natural avalanches and small cornice failures. The slabs will be building Monday night and if triggered, may step down to persistent layers.
The current storm is loading the slab over top of 3 layers: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on aspect and elevation. Avalanches are occurring on these layers and human triggering is likely.
Recent wind and new snow have formed slabs in lee areas of alpine and treeline terrain, and caused natural avalanches. These slabs are being loaded as the storm intensifies. If triggered these slabs may step down to persistent layers.
Incoming new snow and wind will build fresh storm slabs.
This problem is made up of 3 significant interfaces in the upper snowpack. Incoming new snow may overload these layers, which have recently been reactive to skier testing and explosive control work, producing a few very significant results.
Watch for sluffing in steep terrain.
Heavy snowfall created a reactive storm slab. Wind loading continues to overload this weakness. If triggered, the slab could step down to deeper weak layers. Avalanches are running full path.
There are three weak layers in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers and human triggering is almost certain.
Recent winds and new snow have formed slabs in leeward areas of alpine and treeline terrain, and caused natural avalanches. The slabs are plump and ripe for triggering, and will likely step down to persistent weak layers.
Natural Avalanches to size 3 were noted today along with numerous size 2 avalanches failing down 50-100cm on persistent weak layers.
widespread from rapid loading of new snow with warm temps and quick settlement.
There are three weak layers in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers and human triggering is almost certain.
Recent winds and new snow have formed slabs in leeward areas of alpine and treeline terrain, and caused natural avalanches. The slabs are plump and ripe for triggering, and will likely step down to persistent weak layers.
Recent heavy snowfall has created a reactive storm slab. Wind transport has added to the load on lee slopes at and above treeline. If triggered, the slab could step down to deeper persistent weak layers.
There are three weak layers in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers and human triggering is almost certain.
Recent winds and new snow have formed slabs in leeward areas of alpine and treeline terrain, and caused natural avalanches. The slabs are plump and ripe for triggering, and will likely step down to persistent weak layers.
There are three weak layers in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Avalanches are occurring on these layers and human triggering is almost certain.
Recent winds and new snow have formed slabs in leeward areas of alpine and treeline terrain, and caused natural avalanches. The slabs are plump and ripe for triggering, and will likely step down to persistent weak layers.
This is the primary concern at all elevations. The new snow has settled into a touchy soft slab in many locations. This presents as a windslab in exposed areas, such as cross loaded and lee features at upper elevations.
Point releases have the ability to entrain new snow and accumulate significant mass.
Control work produced several results on this layer, particularly in the alpine where storm slabs were able to entrain enough mass to step down to mid-pack instabilities.
Recent heavy snowfall has created a storm slab in some locations. Wind transport added to the load on lee slopes at and above treeline. If triggered, the slab could step down to deeper persistent weak layers.
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Destructive avalanches have occurred on these and will continue over the few days.
With plenty of loose snow around, incoming wind will form slabs quickly, adding to existing ones. The slabs are plump and ripe for triggering, and will likely step down to persistent weak layers.
This is the primary concern at all elevations. The new snow has settled into a touchy soft slab in many locations. This presents as a windslab in exposed areas, such as cross loaded and lee features at upper elevations.
Point releases have the ability to entrain new snow and accumulate significant mass.
Control work produced several results on this layer, particularly in the alpine where storm slabs were able to entrain enough mass to step down to mid-pack instabilities.
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on your aspect and elevation. Destructive avalanches have occurred on these and will continue over the few days.
With plenty of loose snow around, incoming wind will form slabs quickly, adding to existing ones. The slabs are plump and ripe for triggering, and will likely step down to persistent weak layers.
Ongoing heavy snowfall has created a storm slab. Wind transport added to the load on lee slopes at and above treeline. If triggered, the slab could step down to deeper persistent weak layers.
Natural avalanche activity will increase today with forecasted new snow and ongoing winds. The Jan 16th, 4th and Dec 15th surface hoar layers are buried deep, but avalanches in the storm snow can certainly step down and trigger these weak interfaces.
This is the primary concern at all elevations. The new snow has settled into a touchy soft slab in many locations. This presents as a windslab in exposed areas, such as cross loaded and lee features at upper elevations.
Point releases have the ability to entrain new snow and accumulate significant mass.
Control work on Wednesday produced several results on this layer, particularly in the alpine where storm slabs were able to entrain enough mass to step down to mid-pack instabilities.
Cornices will remain touchy until temperature stabilize on Sunday.
Windslabs expected to build with forecasted winds.
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. Destructive avalanches have occurred on these and will continue over the few days.
If the forecasted new snow amounts of 15-20 cm with strong SW winds show up, we will likely see storm slabs failing over the next 24 hrs with potential to step down to deeper layers. Stick to non-avalanche terrain until things have a chance to settle
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. Destructive avalanches have occurred on these and will continue over the few days.
If the forecasted new snow amounts of 15-20 cm with strong SW winds show up, we will likely see storm slabs failing over the next 24 hrs with potential to step down to deeper layers. Stick to non-avalanche terrain until things have a chance to settle
Ongoing heavy snowfall has created a storm slab. Strong to extreme South winds will have redistributed new snow into a touchy windslab in the Alpine &amp; at Treeline.&nbsp; If triggered, the slab could step down to deeper persistent weak layers.
Natural avalanche activity will increase today with forecasted new snow and ongoing winds. The Jan 16th, 4th and Dec 15th surface hoar layers are buried deep, but avalanches in the storm snow can step down and trigger these weak interfaces.
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. Destructive avalanches have occurred on these and will continue over the few days.
15-25cm of new snow has developed a reactive storm slab at higher elevations, If triggered this layer has the potential to step down to deeper instabilities. Stick to non-avalanche terrain until things have a chance to settle
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. Destructive avalanches have occurred on these and will continue over the few days.
20-40cm of recent storm snow has developed a reactive storm slab at higher elevations, numerus skier triggered avalanches have been reported on this layer. Stick to non-avalanche terrain until the storm snow has a chance to settle.
Consistent snowfall has created a storm slab. Previous strong South winds have redistributed the new snow into a windslab in the Alpine and at Treeline. If triggered, the slab could step down to deeper persistent weak layers.
Natural avalanche activity on the persistent weak layers has tapered off recently. The Jan 16th, 4th and Dec 15th surface hoar layers are buried deep, but avalanches in the storm snow can step down and trigger these weak interfaces.
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. Destructive avalanches have occurred on these and will continue over the few days.
20-40cm of storm snow (and wind) has developed a reactive slab at higher elevations. If triggered this layer has the potential to step down to deeper instabilities. Continue to make conservative route choices.
Expecting to build throughout the week with the forecasted winds.
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. Natural activity is tapering, but it is still primed for human triggering.
20-40cm of recent storm snow (and wind) has developed a reactive slab at higher elevations, numerus skier triggered avalanches have been reported on this layer. Continue to make conservative route choices.
Control work on Wednesday produced several results on this layer, particularly in the alpine where storm slabs were able to entrain enough mass to step down to mid-pack instabilities. Field teams observed Whumpfing and moderate test results Sunday.
Snow that began to accumulate last Sunday quickly settled into a touchy soft slab in many locations. In exposed areas, strong SW winds further developed these slabs midweek. 10-15cm of new snow that arrived Saturday and Sunday now hides these slabs.
The new snow that fell Saturday and Sunday has triggered a few slabs as it has sluffed off of rock faces or steep terrain. Consider the potential for this if you enter steep or confined terrain.
Consistent snowfall over the week has created a storm slab. Previous strong South winds have redistributed the new snow into a windslab in the Alpine. If triggered, the slab could step down to deeper persistent weak layers.
Natural avalanche activity on the persistent weak layers has tapered off recently. The Jan 16th, 4th and Dec 15th surface hoar layers are buried deep, but avalanches in the storm snow can step down and trigger these weak interfaces.
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. 50-100 cm of snow over the last week has overloaded these layers.
20-40cm of storm snow (and wind) has developed a slab at higher elevations. If triggered this layer has the potential to step down to deeper instabilities. Continue to make conservative route choices.
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. Natural activity is tapering, but it is still primed for human triggering.
20-40cm of recent storm snow (and wind) has developed a reactive slab at higher elevations. If triggered, this an avalanche on this layer will certainly step down to the deeper weak layers.
Field teams observed whumpfing and moderate test results Sunday and Monday in sheltered zones around treeline on these layers. Shallow areas seem to be the areas to watch in the alpine.
10-15cm of new snow that arrived Saturday and Sunday is being redistributed by light to moderate NW winds.  This new snow may also be hiding older stiffer windslabs from last weeks heavy snow and strong SW winds.
The new snow that fell Saturday and Sunday has triggered a few slabs as it has sluffed off of rock faces or steep terrain. Consider the potential for this if you enter steep or confined terrain such as ice climbs.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">With the extra 25cm of new snow and moderate winds, our storm slab is not getting the time it needs to heal. A layer of large stellars was found down 25cm yesterday, which could have been the culprit layer in regards to the </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://www.avalanche.ca/mountain-information-network/submissions/d6311b3e-980a-41a9-8008-eccec0377268" target="_blank"><span class="s_9255B882">skier accidental size 2!</span></a><span class="s_AA239
Natural avalanche activity on the persistent weak layers has tapered off recently. The Jan 16th, 4th and Dec 15th surface hoar layers are buried deep, but avalanches in the storm snow can step down and trigger these weak interfaces.
Field teams observed whumpfing and moderate test results Sunday and Monday in sheltered zones around treeline on these layers. Shallow areas where windslabs thin out are likely triggering locations in the alpine.
10-15cm of recent snow is being added to lee features by moderate SW winds. This new snow may also be hiding older stiffer windslabs from last weeks heavier snow and strong SW winds.
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. 50-100 cm of snow over the last week has overloaded these layers.
Increased wind at high elevations has created wind slabs in lee areas. The slabs are up to 100cm thick.
Three weak layers exist in the upper snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. Natural activity is tapering, but it is still primed for human triggering.
Increased wind from the W-SW has created fresh wind-slabs in lee areas in the alpine. The slabs are up to 100cm thick.
40cm new snow and mod winds, our storm slab is not getting time to heal. A layer of large stellars was found down 25cm Monday, which could have been the culprit layer in regards to the size 2 skier accidental slide reported Monday on McGill.
The Jan 16th, 4th and Dec 15th surface hoar layers have been quiet recently but may reawaken given a large trigger such as a storm slab avalanche or cornice fall.
Rapid snowfall on top of the 20cm+ already received this week will prime the surface for sluffing. Both natural and skier triggered sluffing can be expected today.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. The recent and forecasted snow will continue to overload these layers.
Look for storm slab formation with warmer temps and forecasted snow amounts. Winds will be variable in direction through the storm period which may result in widespread slab distribution. These new slabs may also be sitting on previous wind slabs.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. The recent and forecasted snow will continue to overload these layers.
Look for storm slab formation with warmer temps and forecasted snow amounts. Winds will be variable in direction through the storm period which may result in widespread slab distribution. These new slabs may also be sitting on previous wind slabs.
Field teams observed whumpfing and moderate test results Sunday and Monday in sheltered zones around treeline on these layers. Shallow areas are the most likely triggering locations in the alpine.
Windslabs were created over the last week with 40cm of snow and West winds. The incoming snow coupled with moderate West winds may build sensitive new storm / windslabs.
The weak facet layer in the snowpack could wake-up with the new snow forecasted on Thursday.
Watch for slab formation with warming temperatures into the weekend. The new snow may also be sitting on old wind slabs
Another 40cm overnight adds to our storm slab which has reached its critical load. The storm slab will need some time to adjust, settle out and stabilize.
The Jan 16th, 4th and Dec 15th surface hoar layers have been quiet recently but may reawaken given a large trigger such as a storm slab avalanche or cornice fall.
Rapid snowfall, with 40cm of low density overnight will be easy to get moving in steep terrain. Both natural and skier triggered sluffing can be expected today.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers are very sensitive to triggering both naturally and by human triggering.
There are storm slabs up to 1m thick on many aspects and elevations from the big storm on Thursday. These will be highly sensitive to triggering and once initiated, can step down to the deeper persistent layers causing very large avalanches.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers are very sensitive to triggering both naturally and by human triggering.
There are storm slabs up to 1m thick on many aspects and elevations from the big storm on Thursday. These will be highly sensitive to triggering and once initiated, can step down to the deeper persistent layers causing very large avalanches.
Up to 45cm of HST fell through the forecast area, over-loading the already weak persistent slab and running far and fast.
Field teams observed widespread whumpfing and moderate test results at TL during the past week. Shallow areas are the most likely triggering locations in the alpine.
Windslabs were created over the last week with 40cm of snow and West winds. The incoming snow coupled with moderate West winds may build sensitive new storm / windslabs.
The last storm brought over 60cm of new snow in 48hrs. Storm slabs remain touchy and are still resulting in large natural avalanches, as recently as 0700 this morning. Expect the &quot;first kiss of the sun&quot; to trigger more storm slab avalanches.
Several deeply buried persistent weak layers are primed for natural and skier triggering with the new storm load. These slides have the potential to reach the full extent of their run-out zones. Mature timber may not be a default safe spot today.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers are very sensitive to triggering both naturally and by human triggering.
There are storm slabs up to 1m thick on many aspects and elevations from the big storm on Thursday. These will be highly sensitive to triggering and once initiated, can step down to the deeper persistent layers causing very large avalanches.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers are very sensitive to triggering both naturally and by human triggering.
There are storm slabs up to 1m thick on many aspects and elevations from the big storm on Thursday. These will be highly sensitive to triggering and once initiated, can step down to the deeper persistent layers causing very large avalanches.
Up to 45cm of HST fell through the forecast area, over-loading the already weak persistent slab and running far and fast.
Persistent slabs remain a problem, areas that have already cleaned out in the last avalanche cycle pose the least risk.
Very large avalanches of been running to this layer at the bottom of the snowpack clearing mature timber in the valley bottom
Forecasted winds will move around the new snow creating wind slabs that have the potential to step down to deeper layers in the snowpack.
The last storm brought over 60cm of snow in 48hrs. In the alpine, mod winds have built windslab. If triggered these slabs will propagate very wide. Cornices have also grown in size &amp; become more fragile in the last week, give them a wide berth!
Several deeply buried persistent weak layers have become reactive with the new snow load. If these layers are triggered the resulting avalanches will have the potential to reach the full extent of their run-out zones, possibly even further.
Up to 45cm of HST fell through the forecast area, over-loading the already weak persistent slab and running far and fast.
Persistent slabs remain a problem. The main concern is for areas exposed to large triggers such as cornices and large South facing alpine terrain exposed to afternoon sun.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers are sensitive to triggering both naturally and by human triggering.
Much of the recent storm snow has now been effected by moderate to strong winds at higher elevations. Expect loading on lee features and new wind slab development on exposed slopes.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers are sensitive to triggering both naturally and by human triggering.
Much of the recent storm snow has now been effected by moderate to strong winds at higher elevations. Expect loading on lee features and new wind slab development on exposed slopes.
The last storm brought 60cm+ of snow. In the alpine, strong winds have formed windslab. If triggered these slabs have potential to propagate. Cornices have grown in size &amp; become more fragile in the last week, avoid exposing yourself to this hazard.
Deeply buried persistent weak layers were reactive in the recent avalanche cycle. Larger loads such as storm slab or cornice fall may trigger these layers. Resulting avalanches will have the potential to reach the full extent of their run-out zones.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers are sensitive to triggering both naturally and by human triggering.
Much of the recent storm snow has now been effected by moderate to strong winds at higher elevations. Expect loading on lee features and new wind slab development on exposed slopes.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers are sensitive to triggering both naturally and by human triggering.
Much of the recent storm snow has now been effected by moderate to strong winds at higher elevations. Expect loading on lee features and new wind slab development on exposed slopes.
Up to 45cm of HST fell through the forecast area. Winds during the storm were from the SW but switched to North Easterly on Sunday.
Persistent slabs remain a problem. The main concern is for areas exposed to large triggers such as cornices and large South facing alpine terrain exposed to the sun.
Recent mod to strong N'ly winds followed by strong S'ly winds have formed winds slab in the alpine and exposed treeline locations. These winds have also contributed to large cornice development. The windslab may be susceptible to human triggering.
Back into lower probability but high consequence of a large avalanche if triggered with the PWL. Large loads such as wind slab or cornice fall may trigger these layers. Resulting avalanches will be large and may reach the end of their run-out zones.
Up to 45cm of HST fell through the forecast area. Winds during the storm were from the SW but switched to North Easterly on Sunday.
Persistent slabs remain a problem. The main concern is for areas exposed to large triggers such as cornices and large South facing alpine terrain exposed to the sun.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers are sensitive to triggering both naturally and by human triggering.
Much of the recent storm snow has now been effected by moderate to strong winds at higher elevations. Strong winds are forecast for Tuesday, expect new slab formation and possible triggering of the persistent layer.
Three weak layers exist in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers are sensitive to triggering both naturally and by human triggering.
Much of the recent storm snow has now been effected by moderate to strong winds at higher elevations. Strong winds are forecast for Tuesday, expect new slab formation and possible triggering of the persistent layer.
Significant snowfall and recent strong winds have formed winds slab in the alpine and exposed treeline.
These slabs will be most susceptible to triggering in shallow areas. This type of instability will linger for a while yet. The significant storms we've seen recently have overloaded these layers, priming slopes to fail only awaiting a trigger.
Cornices have become reactive in the last week. Strong winds, fluctuating temperatures and significant snowfall has contributed to these loitering hazards failing.
Up to 15cm of new snow is being blown in to fresh windslabs.
Persistent slabs remain a problem. The main concern is for areas exposed to large triggers such as cornices and large South facing alpine terrain exposed to the sun.
A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers could easily be triggered.
Strong winds on Tuesday evening has created widespread wind effect in most areas above treeline. Hard wind slabs are anticipated.
A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers could easily be triggered.
Strong winds on Tuesday evening has created widespread wind effect in most areas above treeline. Hard wind slabs are anticipated.
30cm of storm snow has been fallen over night with moderate southwest winds building pockets of wind slab in the alpine and exposed treeline locations. The storm slab will be most reactive along ridge lines, convexities and steep unsupported terrain.
These slabs will be most susceptible to triggering in shallow areas. This type of instability will linger for a while yet. The significant storms we've seen recently have overloaded these layers, priming slopes to fail only awaiting a trigger.
Cornices have become reactive in the last week. Strong winds, fluctuating temperatures and significant snowfall has contributed to these loitering hazards failing.
Up to 15cm of new snow with winds and warmer temperatures is creating fresh windslabs.
Persistent slabs remain a problem. The main concern is for areas exposed to large triggers such as cornices or smaller avalanches / sloughing from above.
A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers could easily be triggered.
Strong winds last Tuesday night created widespread wind effect in most areas above treeline. Hard wind slabs exist in the alpine lees.
A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers could easily be triggered.
Strong winds last Tuesday night created widespread wind effect in most areas above treeline. Hard wind slabs exist in the alpine lees.
40cm in 48hrs, previous moderate winds have redistributed it into pockets of wind slab in the alpine and exposed treeline locations. Expect the storm slab to be most reactive along ridge lines, convexities and in steep unsupported terrain.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
These slabs will be most susceptible to triggering in shallow areas. This type of instability will linger for a while yet. The significant storms seen recently have overloaded these layers, priming slopes to fail only awaiting a trigger.
Cornices have become reactive in the last week. Strong winds, fluctuating temperatures, significant snowfall and strong solar radiation has contributed to these loitering hazards failing.
A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers could easily be triggered.
Strong winds last Tuesday night created widespread wind effect in most areas above treeline. Hard wind slabs exist in the alpine lees.
A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation. These layers could easily be triggered.
Strong winds last Tuesday night created widespread wind effect in most areas above treeline. Hard wind slabs exist in the alpine lees.
Variable and strong upper elevation winds are continuing to create fresh windslabs.
Persistent slabs remain a problem. Areas exposed to large triggers such as cornices or smaller avalanches / sloughing from above are most likely to trigger this midpack weakness.
Watch for this layer to wake up if we get rapid loading from new snow on Saturday night. Expect avalanches to run full path into the valley bottom.
Natural and skier triggered avalanches are still resulting from this reactive storm slab problem.  Loading from moderate to strong southerly winds has increased the likelihood storm slabs being triggered and propagating, especially in exposed areas.
These slabs will be most susceptible to triggering in shallow areas. This type of instability will linger for a while yet. The significant storms seen recently have overloaded these layers, priming slopes to fail only awaiting a trigger.
Variable direction, strong upper elevation winds are continuing to create fresh windslabs and stiffen the snow surface well into Treeline locations.
Persistent slabs remain a problem. Areas exposed to large triggers such as cornices or smaller avalanches / sloughing from above are most likely to trigger this midpack weakness.
A 100-125cm dense slab of snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation.
Strong winds Thursday night created widespread wind effect in most areas above treeline. Hard wind slabs exist in the alpine lees.
A 100-125cm dense slab of snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation.
Strong winds Thursday night created widespread wind effect in most areas above treeline. Hard wind slabs exist in the alpine lees.
Natural and skier triggered avalanches are still resulting from this reactive storm slab problem. Loading from moderate to strong southerly winds has increased the likelihood storm slabs being triggered and propagating, especially in exposed areas.
These slabs will be most susceptible to triggering in shallow areas. This type of instability will linger for a while yet. The significant storms seen recently have overloaded these layers, priming slopes to fail only awaiting a trigger.
A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation.
Strong winds last Tuesday night created widespread wind effect in most areas above treeline. Hard wind slabs exist in the alpine lees.
A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation.
Strong winds last Tuesday night created widespread wind effect in most areas above treeline. Hard wind slabs exist in the alpine lees.
Whumpfing and cracking are signs of this layer's reactivity. Expect long propagation with a wind-stiffened snow surface.
Variable direction, strong upper elevation winds are continuing to create fresh windslabs and stiffen the snow surface well into Treeline locations.
15 hrs of strong N-NE winds have formed reverse loaded windslab at and above treeline. Natural and skier triggered avalanches are expected from this ongoing loading. Avoid exposing yourself to overhead hazard.
These slabs will be most susceptible to triggering in shallow areas. This type of instability will linger for a while yet. The significant storms seen recently have overloaded these layers, priming slopes to fail only awaiting a trigger.
A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation.
Hard wind slabs exist in the alpine lees, however recent cold temps will likely induce a sluggish/slow behavior if triggered.
A 100-125cm dense slab of January storm snow overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on the aspect and elevation.
Hard wind slabs exist in the alpine lees, however recent cold temps will likely induce a sluggish/slow behavior if triggered.
A stiff slab 50 to 90cm thick, sits over sun crusts on south and west aspects, Surface Hoar preserved at, and just above treeline and weak faceted crystals lurking in shallow snowpack features. This is a dangerous problem that is difficult to avoid.
While the winds are now starting to back off, they blew hard, and from a variety of directions all week. Fresh windslabs that are hard in the alpine and exist well into treeline areas can be expected to be be sensitive to skier triggering.
20 hrs of strong N-NE winds have formed reverse loaded windslab at and above treeline. Natural slab avalanches to size 2 have been randomly occurring many triggered by cornice fall. Avoid exposing yourself to overhead hazard.
Persistent weak layers continue to linger and may be susceptible to human triggering in shallow areas. Larger triggers such as cornice fall may also wake these deeper weak layers resulting in larger avalanches.
A stiff slab 50 to 90cm thick, sits over sun crusts on south and west aspects, Surface Hoar preserved at, and just above treeline and weak faceted crystals lurking in shallow snowpack features. This is a dangerous problem that is difficult to avoid.
While the winds are now starting to back off, they blew hard, and from a variety of directions all week. Fresh windslabs that are hard in the alpine and exist well into treeline areas can be expected to be be sensitive to skier triggering.
A 100-125cm strong upper snowpack overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on location, and they continue to produce moderate, sudden planar test results.
A 100-125cm strong upper snowpack overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on location, and they continue to produce moderate, sudden planar test results.
Previous strong N-NE winds have formed reverse loaded windslab at and above treeline. Windslab avalanches to size 2.5 have been triggered by skiers or failing naturally. Avoid exposing yourself to overhead hazard.
Cornices have been failing steadily over the past week.  Cold temperatures and solar input are contributing to these failures with brittle fractures of the snow as temperatures fluctuate.
Persistent weak layers continue to linger and are most likely triggered in steep, shallow, rocky, unsupported terrain features. Larger triggers such as cornice fall may also wake these deeper weak layers resulting in larger avalanches.
A stiff slab 50 to 90cm thick, sits over sun crusts on south and west aspects, Surface Hoar preserved at, and just above treeline and weak faceted crystals lurking in shallow snowpack features. This is a dangerous problem that is difficult to avoid.
While the winds have abated, they blew hard, and from a variety of directions last week. Windslabs are hard in the alpine and they exist well into treeline areas. These can be expected to be be sensitive to skier triggering.
A  strong upper snowpack overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on location, and they continue to produce moderate, sudden planar test results.
In the deeper snowpack areas west of the divide the previously reported persistent weak layers within the mid-pack (Dec 15, Jan 6, and Jan 16 layers) are becoming stronger and only producing hard to no results with pit tests.
Previous strong northerly winds have formed reverse loaded windslab at and above treeline. Windslab avalanches up to size 2.5 have been triggered by skiers or failing naturally. Avoid exposing yourself to overhead hazard.
Cornices have been failing steadily over the past week. Cold temperatures and solar input are contributing to these failures with brittle fractures of the snow as temperatures fluctuate.
Persistent weak layers continue to linger and are most likely triggered in steep, shallow, rocky, unsupported terrain features. Larger triggers such as cornice fall may also wake these deeper weak layers resulting in larger avalanches.
A strong upper snowpack overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on location, and we are slowly gaining confidence with these layers.
In the deeper snowpack areas west of the divide the previously reported persistent weak layers within the mid-pack (Dec 15, Jan 6, and Jan 16 layers) are becoming stronger and only producing hard to no results with pit tests.
A stiff slab 50 to 90cm thick, sits over sun crusts on south and west aspects, Surface Hoar preserved at, and just above treeline and weak faceted crystals lurking in shallow snowpack features. This is a dangerous problem that is difficult to avoid.
While the winds have abated, they blew hard, and from a variety of directions last week. Windslabs are hard in the alpine and they exist well into treeline areas. These can be expected to be be sensitive to skier triggering.
Previous strong northerly winds have formed reverse loaded windslab at and above treeline. Windslab avalanches up to size 2.5 have been triggered by skiers or failing naturally over the past week.
Cornices have been failing over the past week, cold temperatures and solar input are contributing to these failures with brittle fractures of the snow as temperatures fluctuate.
Persistent weak layers continue to linger and are most likely triggered in steep, shallow, rocky, unsupported terrain features. Large triggers such as cornice fall may also wake up these deeper weak layers resulting in large avalanches.
A stiff slab 50 to 80cm thick, sits over: Sun Crusts (south and west aspects), Surface Hoar (at, and just above treeline) and weak Faceted Crystals (very developed in shallow snowpack features) This is a dangerous problem that is difficult to avoid.
Expect hardslabs in the alpine and a few softer slabs at treeline. The cold has kept these in check and helped these settle well over the last few days but some caution is still warranted with the expected warming this weekend.
A strong upper snowpack overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on location, and we are slowly gaining confidence with these layers.
In the deeper snowpack areas west of the divide the previously reported persistent weak layers within the mid-pack (Dec 15, Jan 6, and Jan 16 layers) are becoming stronger and only producing hard to no results with pit tests.
Previous strong northerly and recent moderate southerly winds formed windslab in the alpine and treeline. Natural slab avalanches to size 2 occurred earlier this week, many triggered by cornice fall. Avoid exposing yourself to overhead hazard.
Cornices have been failing over the past week, cold temperatures and solar input are contributing to these failures with brittle fractures of the snow as temperatures fluctuate.
A strong upper snowpack overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on location, and we are slowly gaining confidence with these layers.
A stiff slab 50 to 80cm thick, sits over: Sun Crusts (south and west aspects), Surface Hoar (at, and just above treeline) and weak Faceted Crystals (very developed in shallow snowpack features) This is a dangerous problem that is difficult to avoid.
Expect hardslabs in the alpine and a few softer slabs at treeline. The cold has kept these in check and helped these settle well over the last few days but some caution is still warranted with the expected warming and increased wind this weekend.
In the deeper snowpack areas west of the divide the previously reported persistent weak layers within the mid-pack (Dec 15, Jan 6, and Jan 16 layers) are becoming stronger and only producing hard to no results with pit tests.
Previous strong northerly and recent moderate southerly winds formed windslab in the alpine and treeline. Natural slab avalanches to size 2 occurred earlier this week, many triggered by cornice fall. Avoid exposing yourself to overhead hazard.
A stiff slab 50 to 80cm thick, sits over sun Crusts (south and west aspects), Surface Hoar (at, and just above treeline) and weak Faceted Crystals (very developed in shallow snowpack features) This is a dangerous problem that is difficult to avoid.
Expect hardslabs in the alpine and a few softer slabs at treeline. The cold has kept these in check and helped them settle over the last few days but some caution is still warranted.
A strong upper snowpack overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on location, and we are slowly gaining confidence with these layers.
In the deeper snowpack areas west of the divide the previously reported persistent weak layers within the mid-pack (Dec 15, Jan 6, and Jan 16 layers) are becoming stronger and only producing hard to no results with pit tests.
Moderate S'ly winds and 20cm of storm snow all landing on a facetted old snow surface should make for reactive storm slab at and above treeline.  Lingering windslab is also a concern and will be hidden under the new snow.
A stiff slab 50 to 80cm thick, sits over sun Crusts (south and west aspects), Surface Hoar (at, and just above treeline) and weak Faceted Crystals (very developed in shallow snowpack features).
Expect hardslabs in the alpine and a few softer slabs at treeline. The cold has kept these in check and helped them settle over the last few days but some caution is still warranted.
A strong upper snowpack overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on location, and we are slowly gaining confidence with these layers.
Hard wind slabs exist in lee areas in the alpine. While they may not have a great amount of volume or be particularly touchy, they certainly have the potential to carry you to an undesirable location (cliffs/terrain traps) if triggered.
A strong upper snowpack overlies three weak layers in the mid snowpack: Jan 16, Jan 6, and Dec 15. All are a mix of sun crust, surface hoar and facets depending on location, and we are slowly gaining confidence with these layers.
Hard wind slabs exist in lee areas in the alpine. While they may not have a great amount of volume or be particularly touchy, they certainly have the potential to carry you to an undesirable location (cliffs/terrain traps) if triggered.
Moderate S'ly winds and 25cm of storm snow all landing on a facetted old snow surface. Where wind touched watch for a reactive storm slab at and above treeline. Recently buried windslab is also a concern more so on steeper solar locations.
In steep terrain expect surface power sluffing, which can be an issue in terrain traps such as gully features. Stay situationally aware as to people above and below you.
Hard wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.
A strong upper snowpack overlies three weak layers in the mid snowpack. All are a mix of sun crust, surface hoar and facets depending on location. We have not had any recent avalanche activity on these layers but keep them in mind in large terrain.
Hard wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.
A strong upper snowpack overlies three weak layers in the mid snowpack. All are a mix of sun crust, surface hoar and facets depending on location. We have not had any recent avalanche activity on these layers but keep them in mind in large terrain.
A 50 to 80cm thick slab, sits over sun Crusts (south and west aspects), Surface Hoar (at, and just above treeline) and weak Faceted Crystals (very developed in shallow snowpack features).  Faceting has reduced slab strength in shallow and BTL areas.
Expect hardslabs in the alpine and a few softer slabs at treeline. The cold has kept these in check and helped them settle over the last few days but some caution is still warranted especially as new snow and winds arrive over the next few days.
Storm slabs will be most prevalent in the Alpine and areas at treeline where exposed to the wind. Previous wind slabs are now buried and slowly starting to heal. Cornice failures have tapered off, but it's still recommended to give them a wide berth.
A 50 to 80cm thick slab, sits over sun Crusts (south and west aspects), Surface Hoar (at, and just above treeline) and weak Faceted Crystals (very developed in shallow snowpack features). Faceting has reduced slab strength in shallow and BTL areas.
Expect hardslabs in the alpine and a few softer slabs at treeline. The cold has kept these in check and helped them settle over the last few days but some caution is still warranted especially as new snow and winds arrive over the next few days.
Fresh wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.
We continue to track three mid-snowpack weak layers from earlier this winter. They are bonding well and test results no longer show failures here. This problem continues to be in the back of our minds, but our confidence in the snowpack has improved.
Fresh wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.
We continue to track three mid-snowpack weak layers from earlier this winter. They are bonding well and test results no longer show failures here. This problem continues to be in the back of our minds, but our confidence in the snowpack has improved.
Incremental snow fall amounts and recent moderate, gusting to strong southerly winds have created pockets of wind slab in the alpine and exposed areas at tree line.
A slab up to 80cm thick overlies: weak faceted crystals (well developed in shallow areas), surface hoar (at, and just above treeline), and sun crusts ( on steep S and W aspects). Faceting has reduced slab strength below treeline and in shallow areas.
Previous wind effect will be difficult to assess under new snow. Expect hardslabs in the alpine and at treeline. The cold has reduced the tension in these but caution is still warranted, especially as new snow arrives over the next few days.
Wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.
Wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.
We continue to track three mid-snowpack weak layers from earlier this winter. They are bonding well and test results no longer show failures here. This problem continues to be in the back of our minds, but our confidence in the snowpack has improved.
Low density snow and recent moderate southerly winds have created pockets of wind slab in the alpine and exposed areas at tree line, which overlies a facet layer. Caution is warranted at ridge-top, in cross loaded features and on convex rolls.
A slab up to 80cm thick overlies: weak faceted crystals (well developed in shallow areas), surface hoar (at, and just above treeline), and sun crusts ( on steep S and W aspects). Faceting has reduced slab strength below treeline and in shallow areas.
Previous wind effect will be difficult to assess under new snow. Expect hardslabs in the alpine and at treeline. The cold has reduced the tension in these but caution is still warranted, especially as new snow arrives over the next few days.
Buried wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.
Wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.
Moderate winds have created pockets of wind slab in the alpine and exposed areas at tree line. In the alpine, the wind slab is poorly bonded to buried facets and a crust on solar aspects. Due to shifting winds, slabs can be found on all aspects.
Buried wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.
Wind slabs exist in lee areas in the alpine. While they may not be very thick or particularly touchy, they certainly have the potential to carry you into an undesirable location (cliffs/terrain traps) if triggered in steep terrain.
A slab up to 80cm thick overlies: weak faceted crystals (well developed in shallow areas), surface hoar (at, and just above treeline), and sun crusts ( on steep S and W aspects). Faceting has reduced slab strength below treeline and in shallow areas.
Previous wind effect will be difficult to assess under new snow. Expect hardslabs in the alpine and at treeline. The cold has reduced the tension in these but caution is still warranted.
Around 10 cm of new snow fell overnight with another 5-10 possible today. Expect this snow to be reactive at ridgetop or in steep unsupported terrain. This new slab buries an old windslab that was reactive on solar aspects.
A suncrust and facet layer is buried down 40-70 cms on solar aspects. This layer has the potential to be human triggered with wide propagation.
Expect hardslabs in the alpine and at treeline. The cold has reduced the tension in these but caution is still warranted.
A cold, facetting, and structurally weak slab up to 80cm thick overlies: faceted crystals (well developed in shallow areas), surface hoar (at, and just above treeline), and sun crusts (on steep S and W aspects).
Wind slabs covered by 10-20cm of loose snow exist in lee areas in the alpine. They have not been very easy to trigger, but do have potential to carry you into an undesirable location (cliffs/terrain traps) if they fail in steep terrain.
10-20 cm of storm snow has fallen with little wind. In many places this sits over loose facets from the last cold snap and with any increase in wind, or skier triggering, we will see small sluffs traveling a long ways in steep terrain.
Wind slabs covered by 10-20cm of loose snow exist in lee areas in the alpine. They have not been very easy to trigger, but do have potential to carry you into an undesirable location (cliffs/terrain traps) if they fail in steep terrain.
10-20 cm of storm snow has fallen with little wind. In many places this sits over loose facets from the last cold snap and with any increase in wind, or skier triggering, we will see small sluffs traveling a long ways in steep terrain.
No recent avalanches have been observed on this facet layer but this is the sleeping dragon.
With forecasted winds expected to rise Sunday night, we can expect the new snow to form wind slabs.
Recent snowfall has created a touchy storm slab. Expect this snow to be reactive at ridgetop or in steep unsupported terrain. Sunny breaks are forecast today, even short bursts of the strong spring sun could make the new storm snow more reactive.
A suncrust and facet layer is buried down 40-70 cms on solar aspects. This is a bad combo of a weak layer and strong bed surface. This layer has the potential to be human triggered with wide propagation. Dig down and have a look for it.
Expect hard windslabs in the alpine and at treeline. The cold has reduced the probability for long propagations but caution is still warranted on exposed terrain features.
A cold, facetting, and structurally weak slab up to 80cm thick overlies: faceted crystals (well developed in shallow areas), surface hoar (at, and just above treeline), and sun crusts (on steep S and W aspects).
10-20 cm of storm snow has fallen with little wind. In many places this sits over loose facets from the last cold snap and with any increase in wind, sun or skier triggering, we will see small sluffs traveling a long ways in steep terrain.
This problem is isolated to Kootenay and the region surrounding Sunshine where snowfall amounts were up to 35cm. Expect this problem to transition to a wind slab problem as the low density snow is redistributed by increasing wind.
This problem will be more pronounced in the parts of the forecast region that received more storm snow. It will be particularly prevalent in steep confined areas.
Storm snow has formed into a touchy storm slab. Expect this snow to be reactive at ridgetop or in steep unsupported terrain. Sunny breaks are forecast today, even short bursts of the strong spring sun could make the new storm snow more reactive.
A suncrust and facet layer is buried down 40-70 cms on solar aspects. This is a bad combo of a weak layer and strong bed surface. This layer has the potential to be human triggered with wide propagation. Dig down and have a look for it.
Expect windslabs in the alpine and at treeline. The cold has reduced slab conductivity and the probability for long propagations but caution is still warranted on exposed terrain features.
A cold, facetting, and structurally weak slab up to 80cm thick overlies faceted crystals (well developed in shallow areas), and areas with preserved surface hoar (at, and just above treeline).
Increasing alpine West winds are forming wind slabs in lee areas near ridge crests. In steep unsupported terrain skier triggering is possible. 
This problem is more pronounced in the Southern parts of the forecast region that received more storm snow. It will be particularly prevalent in steep confined gullies, and/or where the old snow below the storm snow is weak and facetted.
No recent avalanches have been observed on this facet layer but this is the sleeping dragon.
Isolated wind slabs in steep gullies
Increasing West winds will be moving snow around in the alpine and forming slabs in lee areas. Watch for these especially in steep unsupported terrain where skier triggering may be possible.
Storm snow has formed a slab at ridgetop, wind exposed terrain or in steep unsupported rolls. Sunny breaks are forecast today, even short bursts of the strong spring sun could make the new storm snow more reactive.
A suncrust is buried 40-70 cms on solar aspects. This layer has the potential for human triggering, dig down and assess the snowpack before committing to your line.
Increasing alpine West winds have formed wind slabs in lee areas near ridge crests. In steep unsupported terrain skier triggering is possible.
This problem is mainly for the Kootenay region that received more storm snow this pasty weekend. It will be particularly prevalent in steep confined gullies, and/or where the old snow below the storm snow is weak and facetted.
Increasing West winds have moved new snow around in the alpine forming&nbsp; small slabs in lee areas. Watch for these especially in steep unsupported terrain where skier triggering may be possible.
Expect windslabs in the alpine and at open treeline. The cold has reduced slab conductivity, and the probability for long propagations. Caution is still warranted on exposed or extreme terrain features.
A cold, facetting, and structurally weak slab up to 80cm thick overlies faceted crystals (well developed in shallow areas).
Isolated storm slabs could be found at ridgetop or features exposed to the wind. Solar radiation will trigger loose dry avalanches on steep sunny slopes and cliffs. These &quot;sluffs&quot; could trigger a soft slab or step down to a persistent weak layer.
Suncrusts are buried 20-50 cms on steep solar aspects. This layer has the potential for human triggering, dig down and assess the snowpack before committing to your line.
Expect windslabs in the alpine and at open treeline. The cold has reduced slab conductivity, and the probability for long propagations. Caution is still warranted on exposed or extreme terrain features.
A cold, facetting, and structurally weak slab up to 80cm thick overlies faceted crystals (well developed in shallow areas). Low elevations will present as a loose dry avalanche problem.
Increasing alpine West winds have formed wind slabs in lee areas near ridge crests. In steep unsupported terrain skier triggering is possible.
Loose dry sluffs from steep terrain were noted Wednesday. Although small in nature, it will be a concern in steep confined gullies, and/or where the old snow below the storm snow is weak and facetted.
Increasing West winds have moved new snow around in the alpine forming small slabs in lee areas. Watch for these in the high alpine, especially in steep unsupported terrain where skier triggering may be possible.
Isolated storm slabs could be found at ridgetop or features exposed to the wind. Solar radiation will trigger loose dry avalanches on steep sunny slopes and cliffs. These &quot;sluffs&quot; could trigger a soft slab or step down to a persistent weak layer.
Several sun crusts are buried within the top 50 cms on steep solar aspects. These layers have the potential for human triggering, dig down and assess the snowpack before committing to the line.
A cold, facetting, and structurally weak slab up to 80cm thick overlies faceted crystals (well developed in shallow areas). Low elevations will present as a loose dry avalanche problem.
Increasing alpine West winds have formed wind slabs in lee areas near ridge crests. In steep unsupported terrain skier triggering is possible.
Loose dry sluffs from steep terrain were noted Wednesday. Although small in nature, it will be a concern in steep confined gullies, and/or where the old snow below the storm snow is weak and facetted.
Increasing West winds have moved new snow around in the alpine forming small slabs in lee areas. Watch for these in the high alpine, especially in steep unsupported terrain where skier triggering may be possible.
New snow and southerly winds have created reactive storm slabs. Slabs will be well-formed on lee features when wind has contributed to loading. These slabs are touchy and sensitive to human triggered loads as well as natural inputs like wind and sun.
Sun crusts are buried 30-60 cm on steep solar aspects. This interface provides a smooth bed surface and may contribute to larger than expected avalanches. It is possible for storm snow avalanches to trigger this lingering problem.
A cold, facetting, and structurally weak slab up to 80cm thick overlies faceted crystals (well developed in shallow areas). Low elevations will present as a loose dry avalanche problem.
Alpine West winds have formed wind slabs in lee areas near ridge crests over the past week. In steep unsupported terrain skier triggering is possible.
Expect loose wet avalanches to initiate from steep rocky terrain. Watch for increasing hazard associated with prolonged sun affect.
Climbers avoid terrain exposed to the sun, we expect solar related avalanche activity over the next few days with prolonged sun affect and warmer day time temperatures.&nbsp; Loose wet avalanches can be expected to initiate from overhead rocks and cliffs.
Increasing West winds have moved new snow around in the alpine forming small slabs in lee areas. Watch for these in the high alpine, especially in steep unsupported terrain where skier triggering may be possible.
Strong south winds and recent storm snow have created wind slabs. Expect these slabs to be most reactive at ridgetop or in steep unsupported terrain. Today is forecast to be sunny and the strong solar radiation to make the windslab more reactive.
Sun crusts are buried 30-60 cm on steep solar aspects. This interface provides a smooth bed surface and may contribute to larger than expected avalanches. It is possible for smaller avalanches to trigger this lingering problem.
Today the new snow will get a blast of strong spring solar radiation. This should trigger a natural cycle of loose wet avalanches on solar aspects, most likely initiated from rock outcrops or dropping snow pillows.
A cold, facetting, and structurally weak snowpack overlies faceted crystals (well developed in shallow areas).
Alpine West winds have formed wind slabs in lee areas near ridge crests over the past week. In steep unsupported terrain skier triggering is possible.
Expect loose wet avalanches to initiate from steep rocky terrain. Watch for increasing hazard associated with prolonged sun affect. Finish very early, or better yet, avoid steep confined features all together.
Alpine West winds have formed wind slabs in lee areas near ridge crests over the past week. In steep unsupported terrain skier triggering is possible.
Expect loose wet avalanches to initiate from steep rocky terrain. Watch for increasing hazard associated with prolonged sun affect. Finish very early, or better yet, avoid steep confined features all together.
The first sustained warming event of the season will put the deeply buried December Facet layer to the test. The 'where' and 'when' of this problem is difficult to evaluate, but likelihood will rise with the sustained warm temps forecast.
More of a problem Tuesday on, especially if overnight temperatures remain high.
Expect loose wet avalanches to initiate from steep rocky terrain. Pay close attention to the effects of the sun on the avalanche terrain above you and avoid overhead exposure. With prolonged warm temps expect cornices to begin failing.
Strong south winds and recent storm snow have created wind slabs. Expect these slabs to be most reactive at ridgetop or in steep unsupported terrain. Today is forecast to be sunny and the strong solar radiation to make the windslab more reactive.
Sun crusts are buried 30-60 cm on steep solar aspects. This interface provides a smooth bed surface and may contribute to larger than expected avalanches. It is possible for smaller avalanches to trigger this lingering problem.
Expect loose wet avalanches to initiate from steep rocky terrain. Watch for increasing hazard associated with prolonged sun affect. Finish very early, or better yet, avoid steep confined features all together.
Alpine West winds formed windslabs last week. These are bonding, but in steep unsupported terrain, skier triggering is still possible.
Expect loose wet avalanches to initiate from steep rocky terrain. Watch for increasing hazard associated with prolonged sun affect. Finish very early, or better yet, avoid steep confined features all together.
Alpine West winds formed windslabs last week. These are bonding, but in steep unsupported terrain, skier triggering is still possible.
Late afternoon problem in steep, solar rocky terrain. Also found to be entraining the surrounding, facetted snowpack and will build up volume and speed quickly.
As daily temperature swings push further and further in to&nbsp; the upper snowpack, slab avalanches may occur at several interfaces within the facetted and structurally weak mid and lower snowpack.
Expect loose wet avalanches to initiate from steep solar terrain. Pay close attention to the effects of the sun on the avalanche terrain above you and avoid overhead exposure. With prolonged warm temps expect cornices to begin failing.
Strong south winds and recent storm snow have created isolated wind slabs. Expect to find pockets of windslab in the immediate lee of ridges and crossloaded features in the alpine.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Sun crusts are buried 30-60 cm on steep solar aspects. This interface provides a smooth bed surface and may contribute to larger than expected avalanches. It is possible for smaller avalanches to trigger this lingering problem.
Shaded aspects and elevations above the freezing level.
rising freezing levels and large triggers like cornice failures may wake up deeper slab instabilities
Avoid steep gully areas and any sun exposed faces or overhead terrain - it will avalanche when the sun hits it. Stick to shaded terrain and look way overhead to make sure nothing big is hanging above you - things are falling off these days.
Hot weather means cornice season, and this is the time when large mature cornices begin to fall off and the mountain sheds its snowpack. On ridges stay well away from cornices (they can reach back and get you), and avoid traveling under them.
Avoid steep gully areas and any sun exposed faces or overhead terrain - it will avalanche when the sun hits it. Stick to shaded terrain and look way overhead to make sure nothing big is hanging above you - things are falling off these days.
Hot weather means cornice season, and this is the time when large mature cornices begin to fall off and the mountain sheds its snowpack. On ridges stay well away from cornices (they can reach back and get you), and avoid traveling under them.
Expect loose wet avalanches to initiate from steep solar terrain. Pay close attention to the effects of the sun on the avalanche terrain above you and avoid overhead exposure. With prolonged warm temps expect cornices to begin failing.
Previous strong south winds created pockets of isolated wind slab in the immediate lee of ridges and crossloaded features in the alpine.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
More shaded aspects and elevations above the freezing level.
Rising freezing levels and large triggers like smaller avalanches may wake up deeper slab instabilities
The sun is strong right now and with this clear weather, it is destabilizing the snow on solar aspects in the afternoon. Generally these avalanches are running as loose wet and not stepping down to deeper layers, but the possibility remains.
Hot weather means cornice season, and this is the time when large mature cornices begin to fall off and the mountain sheds its snowpack. On ridges stay well away from cornices (they can reach back and get you), and avoid traveling under them.
The sun is strong right now and with this clear weather, it is destabilizing the snow on solar aspects in the afternoon. Generally these avalanches are running as loose wet and not stepping down to deeper layers, but the possibility remains.
Hot weather means cornice season, and this is the time when large mature cornices begin to fall off and the mountain sheds its snowpack. On ridges stay well away from cornices (they can reach back and get you), and avoid traveling under them.
Expect loose wet avalanches to initiate from steep solar terrain. Pay close attention to the effects of the sun on the avalanche terrain above you and avoid overhead exposure.
Large cornices are hanging off ridge lines and will weaken with daytime warming and intense solar radiation. Minimize your exposure to these looming hazards.
Polar aspects still have cold, faceted snow and did not receive either solar triggers or significant snowpack settlement this past week. Steep, unsupported slopes should be treated with due respect.
The sun is strong right now and with this clear weather, it is destabilizing the snow on solar aspects in the afternoon. Generally these avalanches are running as loose wet and not stepping down to deeper layers, but the possibility remains.
Hot weather means cornice season, and this is the time when large mature cornices begin to fall off and the mountain sheds its snowpack. On ridges stay well away from cornices (they can reach back and get you), and avoid traveling under them.
Fresh storm slabs may sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects, assess the bond at these interfaces carefully before committing to any avalanche start zones.
At upper elevations polar aspects still held cold, faceted snow and did not receive either solar triggers or significant snowpack settlement this past week. Steep, unsupported slopes should be treated with due respect.
Fresh storm slabs may sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects, assess the bond at these interfaces carefully before committing to any avalanche start zones.
20-30 cm of snow in the last 24hrs has been sluffing naturally in steep terrain and is reactive to skiers. Wind, warm temps or sunny breaks will also increase the likelihood of this. Avoid steep confined terrain until the new snow settles and bonds.
20-30 cm of new snow is forming a soft slab and has been reactive to skier triggering. Places where this slab sits over a melt freeze crust may be the most likely to fail, but all steep terrain will be suspect for the next day or two.
Areas with deeper storm snow amounts are sluffing easily. This is a good time to avoid steep gullied terrain where even a small avalanche will gain mass quickly. Wind, warm temps or sunny breaks will also increase the likelihood of this problem.
In places where the storm snow is deepest, a soft slab has formed that remains reactive to human triggering. Monitor the storm snow amounts frequently, and use caution on larger slopes if a storm snow slab is present.
Today the snowpack will get the full effect of the sun.  Expect the recent 5-10 cm to become reactive on solar aspects especially around rocks and trees in steep terrain.  As the near surface crust breaks down in the PM we could see bigger avalanches
Fresh storm slabs may sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects, assess the bond at these interfaces carefully before committing to any avalanche start zones.
20-30cm recent snow has formed a soft slab and has seen recent human triggering. Dig down to look at how the new snow is bonding to the surface below, as there are a variety of crusts, facets, and old snow depending on aspect and elevation.
20-30cm recent snow has formed a soft slab and has seen recent human triggering. Dig down to look at how the new snow is bonding to the surface below, as there are a variety of crusts, facets, and old snow depending on aspect and elevation.
Hazard will increase with clearing skies after new snow.
Watch for these developing Monday afternoon through Tuesday.
Fresh storm slabs may sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to any avalanche start zones.
20-30cm recent snow has formed a soft slab and has seen recent human triggering. Avalanche activity is tapering but dig down to test the layer in your local area to determine its sensitivity.&nbsp;
20-30cm recent snow has formed a soft slab and has seen recent human triggering. Avalanche activity is tapering but dig down to test the layer in your local area to determine its sensitivity.
This problem has transitioned from Storm Slabs. Recent wind from the NW has been redistributing the storm snow into immediate lee areas in the alpine. The slabs should be visible on the surface as well as being able to feel them with your skis.
On steep solar terrain the recent storm snow (20-30cm) is sitting on a firm crust. The public has interacted with this 'problem' a couple of times in the last 24 hours. Avoid steep solar slopes in the alpine, especially late in the day.
This problem has transitioned from Storm Slabs. Recent wind from the NW has been redistributing the storm snow into immediate lee areas in the alpine. The slabs should be visible on the surface as well as being able to feel them with your skis.
On steep solar terrain the recent storm snow (20-30cm) is sitting on a firm crust. The public has interacted with this 'problem' a couple of times in the last 24 hours. Avoid steep solar slopes in the alpine, especially late in the day.
Storm slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to avalanche start zones.
Minuscule amounts of new snow fell with moderate winds overlying a solid snowpack. A storm slab may be most problematic where it's sitting on a crust and or on a surface hoar on a crust, where exposed to the wind.
24 hours of sustained winds from the SW has created windslabs up to 30 cm thick in leeward areas, mostly in the alpine. The are unlikely to release naturally but can be triggered by skiers and climbers.
On steep solar terrain the recent storm snow (20-30cm) is sitting on a suncrust that was buried on March 15. These types of problems can be tricky due to their isolated nature, but be cautious on any steep south or west facing terrain in the alpine.
24 hours of sustained winds from the SW has created windslabs up to 30 cm thick in leeward areas, mostly in the alpine. The are unlikely to release naturally but can be triggered by skiers and climbers.
On steep solar terrain the recent storm snow (20-30cm) is sitting on a suncrust that was buried on March 15. These types of problems can be tricky due to their isolated nature, but be cautious on any steep south or west facing terrain in the alpine.
Windslabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Shaded slopes have been more reactive. Assess the bond at these interfaces carefully before committing to avalanche start zones.
15cm of recent snow and moderate winds have built a storm slab and may be most problematic where it's sitting on a crust, or on surface hoar over a crust where exposed to the wind.
Localized winds have created slabs up to 30 cm thick in some drainages, in other areas they are much thinner and restricted to the immediate lees. They are unlikely to release naturally but can be triggered by skiers and climbers.
On steep solar terrain the recent storm snow (10-30cm) is sitting on a suncrust.&nbsp; In thinner areas the have been 2 avalanches on deeper facet layers. These problems tricky due to their isolated nature - caution on solar aspects and in thin areas.
Localized winds have created slabs up to 30 cm thick in some drainages, in other areas they are much thinner and restricted to the immediate lees. They are unlikely to release naturally but can be triggered by skiers and climbers.
On steep solar terrain the recent storm snow (10-30cm) is sitting on a suncrust. In thinner areas the have been 2 avalanches on deeper facet layers. These problems tricky due to their isolated nature - caution on solar aspects and in thin areas.
Windslabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Shaded slopes have been more reactive. Assess the bond at these interfaces carefully before committing to avalanche start zones.
Recent snow and variable moderate winds may have built pockets of wind slab and would be most problematic where it's sitting on a crust or surface hoar.
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Shaded slopes have been more reactive. Assess the bond at these interfaces carefully before committing to avalanche start zones.
Isolated wind slabs can be found near ridge tops in immediate lees. They are unlikely to release naturally but can be triggered by skiers and climbers.
Concern still exists for last weeks storm snow (20-30 cm) where it overlies a crust on solar aspects. Some recent avalanches have been observed on this interface.
Wind slabs and wind effect can be found in the alpine. Wind slabs are unlikely to release naturally but can be triggered by skiers and climbers.
Concern still exists for last weeks storm snow (20-30 cm) where it overlies a crust on solar aspects. Some recent avalanches have been observed on this interface.
Strong southerly winds contributed to a natural avalanche cycle this morning. Lingering windslabs are present on most aspects in the alpine. Windslabs are likely to propagate where they overlie buried curst on solar aspects and isolated surface hoar.
Wind slabs and wind effect can be found in the alpine. Wind slabs are unlikely to release naturally but can be triggered by skiers and climbers.
Concern still exists for last weeks storm snow (20-30 cm) where it overlies a crust on solar aspects. Some recent avalanches have been observed on this interface.
Wind slabs and wind effect can be found in the alpine. Wind slabs are unlikely to release naturally but can be triggered by skiers and climbers.
Concern still exists for last weeks storm snow (20-30 cm) where it overlies a crust on solar aspects. Some recent avalanches have been observed on this interface.
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Shaded slopes have been more reactive. Assess the bond at these interfaces carefully before committing to avalanche start zones.
Recent and ongoing strong gusting alpine winds continues to build cornices with evidence of recent failures on Friday
Lingering wind slabs are present on most aspects in the alpine. These slabs are most easily triggered on convex, unsupported terrain. Wind slabs are likely to propagate where they overlie a buried curst on solar aspects and isolated surface hoar.
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Shaded slopes have been more reactive. Assess the bond at these interfaces carefully before committing to avalanche start zones.
Wind slabs and wind effect can be found in the alpine. Wind slabs are unlikely to release naturally but can be triggered by skiers and climbers especially near ridge crest.
Concern still exists for last weeks storm snow (20-30 cm) where it overlies a crust on solar aspects. Some recent avalanches have been observed on this interface.
Wind slabs and wind effect can be found in the alpine. Wind slabs are unlikely to release naturally but can be triggered by skiers and climbers especially near ridge crest.
Concern still exists for last weeks storm snow (20-30 cm) where it overlies a crust on solar aspects. Some recent avalanches have been observed on this interface.
Lingering wind slabs are present on most aspects in the alpine. These slabs are most easily triggered on convex, unsupported terrain. Wind slabs are likely to propagate where they overlie a buried curst on solar aspects and isolated surface hoar.
Wind slabs and wind effect can be found in the alpine. Wind slabs are unlikely to release naturally but can be triggered by skiers and climbers, especially near ridge crest.
Concern still exists for last weeks storm snow (20-30 cm) where it overlies a crust on solar aspects. Some recent avalanches have been observed on this interface.
Wind slabs and wind effect can be found in the alpine. Wind slabs are unlikely to release naturally but can be triggered by skiers and climbers, especially near ridge crest.
Concern still exists for last weeks storm snow (20-30 cm) where it overlies a crust on solar aspects. Some recent avalanches have been observed on this interface.
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to avalanche start zones.
Five cm of new snow fell overnight with Southerly winds gusting to 81 km/hr. Another 5cm is forecast today with sustained winds building windslab in lee features.  Pay close attention solar aspects where near surface crusts act as a good bed surface
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to avalanche start zones.
Wind slabs and wind effect will increase on Tuesday with the arrival of new snow and continued W winds. We expect to see increased natural avalanche activity, especially as cornices get over loaded and fail, and human triggering will be likely.
As the new snow increases the load over the March 15 crust on solar aspects we may start to see avalanche activity on this layer. If the facets below the crust also fail, larger propagations will be possible.
Wind slabs and wind effect will increase on Tuesday with the arrival of new snow and continued W winds. We expect to see increased natural avalanche activity, especially as cornices get over loaded and fail, and human triggering will be likely.
As the new snow increases the load over the March 15 crust on solar aspects we may start to see avalanche activity on this layer. If the facets below the crust also fail, larger propagations will be possible.
20cm new snow with Southerly winds gusting to 80 km/hr has formed a storm slab. Another 10cm is forecast today with sustained winds building windslab in lee features. Pay attention on solar aspects where near surface crusts act as a good bed surface
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to avalanche start zones.
Wind slabs and wind effect will continue to be a problem.
As the new snow increases the load over the March 15 crust on solar aspects we may start to see avalanche activity on this layer. If the facets below the crust also fail, larger propagations will be possible.
Wind slabs and wind effect will increase on Tuesday with the arrival of new snow and continued W winds. We expect to see increased natural avalanche activity, especially as cornices get over loaded and fail, and human triggering will be likely.
As the new snow increases the load over the March 15 crust on solar aspects we may start to see avalanche activity on this layer. If the facets below the crust also fail, larger propagations will be possible.
60cm of storm snow buries a crust up to 2000m on all aspects and into the alpine on solar aspects. 30cm of new snow is settling quickly could be reactive to human presence. Moderate to strong winds have formed wind slabs on lee features.
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to any avalanche zones.
60cm of storm snow buries a crust up to 2000m on all aspects and into the alpine on solar aspects. 30cm of new snow is settling quickly could be reactive to human presence. Moderate to strong winds have formed wind slabs on lee features.
Cornices are hard to predict and have been sporadically failing in the park triggering avalanches to size 2.5. New snow, wind and temperature increases are a great recipe for cornice triggered avalanches.
This problem includes new widespread storm slabs which will form if the expected snow and wind occurs, and some older wind slabs which will now be buried in specific features at upper elevations.
The buried March 15th suncrust has provided a good sliding layer in recent skier triggered avalanches. This crust is buried 25-40cm currently on solar aspects, and will be deeper after the forecast snow Friday.
This problem includes new widespread storm slabs which will form if the expected snow and wind occurs, and some older wind slabs which will now be buried in specific features at upper elevations.
The buried March 15th suncrust has provided a good sliding layer in recent skier triggered avalanches. This crust is buried 25-40cm currently on solar aspects, and will be deeper after the forecast snow Friday.
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to to a slope.
Watchout for storm slabs forming with new snow.
Because the snow surface is a smooth crust the new snow will run fast and far
With the help of strong south winds, the storm snow is forming into a cohesive slab. The slab sits on a variety of surfaces including a widespread crust below tree line, a crust on solar aspects, and isolated pockets of surface hoar on polar aspects.
Cornices are hard to predict and have been sporadically failing in the park triggering avalanches to size 2.5. New snow, wind and temperature increases are a great recipe for cornice triggered avalanches.
The new snow Friday arrived with strong SW winds and formed wind slabs in lee areas. Some older wind slabs will now be buried in specific features at upper elevations as well. This new snow will need a few days to settle and bond.
The buried March 15th sun crust is down 25-50cm and has provided a good sliding layer for several skier triggered avalanches over the past week. The new snow load may make this more touchy so avoid steep solar aspects until this has a chance to bond.
The new snow Friday arrived with strong SW winds and formed wind slabs in lee areas. Some older wind slabs will now be buried in specific features at upper elevations as well. This new snow will need a few days to settle and bond.
The buried March 15th sun crust is down 25-50cm and has provided a good sliding layer for several skier triggered avalanches over the past week. The new snow load may make this more touchy so avoid steep solar aspects until this has a chance to bond.
Of greatest concern in the Alpine where winds were most consistently from the North. Cold temperatures will offer some forgiveness but if triggered this might provide enough mass for a step down effect to deeper weaknesses.
Cornices are growing with fresh snow and strong winds
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to to a slope.
With the help of strong south winds, the storm snow is forming into a cohesive slab. The slab sits on a variety of surfaces including a widespread crust below tree line, a crust on solar aspects, and isolated pockets of surface hoar on polar aspects.
Cornices are hard to predict and have been sporadically failing in the park triggering avalanches to size 2.5. New snow, wind and temperature increases are a great recipe for cornice triggered avalanches.
The new snow Friday arrived with strong SW winds but so far wind slabs haven't been observed to be widespread. Winds may go into the moderate range on Sunday with plenty of loose snow to push around. Watch locally for their formation.
Still some observations of avalanches reported today by Lake Louise ski hill on the March 15th sun crust now buried 30-50cm deep. Dig down to see if the crust exists and its bond to the snow above.
The new snow Friday arrived with strong SW winds but so far wind slabs haven't been observed to be widespread. Winds may go into the moderate range on Sunday with plenty of loose snow to push around. Watch locally for their formation.
Still some observations of avalanches reported today by Lake Louise ski hill on the March 15th sun crust now buried 30-50cm deep. Dig down to see if the crust exists and its bond to the snow above.
Explosive work today produced numerous results on this storm slab interface. Typically 50m or less but with larger triggers up to 100m. It is expected this instability will settle out quickly as there is no significant sliding interface.
Cornices are growing with fresh snow additions. Several failures were noted from the past 36hrs triggering slabs below
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to to a slope.
Storm slabs may be susceptible to human triggering. Steep S aspects where the slab may sit on a sun crust and wind loaded features on N and E aspects are the main concern.
In most cases this interface presents as a manageable surface instability and is expected to go dormant pretty quickly. Pay close attention to any fellow travelers above and/or below you as enter fresh terrain.
Cornices are growing with fresh snow additions. Several failures were noted, in most cases triggering a slab below.
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to to a slope.
The new snow Friday arrived with strong SW winds and reports vary concerning the extent of the wind effect. Some good propagation was seen in the wind loaded portions of start zones with avalanche control. East winds Monday should redistribute snow.
This crust has given several groups a surprise over the last while. Be suspicious of solar terrain and recognize that the bond to this crust will vary with subtle changes in slope aspect and angle.
The new snow Friday arrived with strong SW winds and reports vary concerning the extent of the wind effect. Some good propagation was seen in the wind loaded portions of start zones with avalanche control. East winds Monday should redistribute snow.
This crust has given several groups a surprise over the last while. Be suspicious of solar terrain and recognize that the bond to this crust will vary with subtle changes in slope aspect and angle.
Variable strong winds have blown the recent storm snow around and loaded all aspects in the alpine. While these slabs are fresh they will be susceptible to human triggering, especially in steep unsupported terrain or with strong solar heating.
70-90cm of settled snow sits on the mid March crust/facet combo. This layer was whumphing and tests showed potential for wide propagation if this layer is triggered.
Expect to encounter windslabs on all aspects at treeline and higher. They range from 20 to 40cm thick. On solar aspects, where the Mar 15 crust exists, potential remains for these wind slabs to be touchier than polar aspects.
Dig down to test the bond between the recent storm snow and the Mar 15 crust. While activity has tapered, forecasters do not have the confidence to remove this problem. Forecasters also suspect faceting on the Mar 15 crust due to recent cold temps.
In most cases this interface presents as a manageable surface instability and is expected to go dormant pretty quickly. Pay close attention to any fellow travelers above and/or below you as enter fresh terrain.
Cornices are growing with fresh snow additions. Several failures were noted, in most cases triggering a slab below.
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to to a slope.
Expect to encounter windslabs on all aspects at treeline and higher. They range from 20 to 40cm thick.
Dig down to test the bond between the recent storm snow and the Mar 15 crust. While activity has tapered, forecasters do not have the confidence to remove this problem. Forecasters also suspect faceting on the Mar 15 crust due to recent cold temps.
Previous strong variable winds have blown the recent storm snow around and loaded lee features in the Alpine. While these slabs are fresh they will be susceptible to human triggering, especially in steep unsupported terrain or with solar heating.
70-90cm of settled snow sits on the mid March crust/facet combo. This layer was whumphing and tests showed potential for wide propagation if this layer is triggered. Avoid convexities and thin snowpack areas on solar aspects.
In most cases this interface presents as a manageable surface instability and is expected to go dormant pretty quickly. Pay close attention to any fellow travelers above and/or below you as enter fresh terrain.
Cornices are growing with fresh snow additions. Several failures were noted, in most cases triggering a slab below.
Wind slabs sit on a hard melt-freeze crust on solar aspects, and facets on polar aspects. Assess the bond at these interfaces carefully before committing to to a slope.
Expect to encounter windslabs on all aspects at treeline and higher. They range from 20 to 40cm thick. On solar aspects, where the Mar 15 crust exists, potential remains for these wind slabs to be touchier than polar aspects.
Dig down to test the bond between the recent storm snow and the Mar 15 crust. Forecasters suspect faceting on the Mar 15 crust due to recent cold temps.  Seems most sensitive with daytime heating allowing the surface snow to propagate as a soft slab.
Expect to encounter windslabs on all aspects at treeline and higher. They range from 20 to 40cm thick. On solar aspects, where the Mar 15 crust exists, potential remains for these wind slabs to be touchier than polar aspects.
Dig down to test the bond between the recent storm snow and the Mar 15 crust. Forecasters suspect faceting on the Mar 15 crust due to recent cold temps. Seems most sensitive with daytime heating allowing the surface snow to propagate as a soft slab.
Previous strong variable winds have blown the storm snow around and loaded lee features in the Alpine. While these slabs are fresh they will be susceptible to human triggering, especially in steep unsupported terrain or with solar heating.
70-90cm of settled snow sits on the mid March crust/facet combo. In recent tests this layer fails suddenly and has showed potential for wide propagation if triggered. Avoid convexities and thin snowpack areas on solar aspects.
Dig down to test the bond between the recent storm snow and the Mar 15 crust. Forecasters suspect faceting on the Mar 15 crust due to recent cold temps. Seems most sensitive with daytime heating allowing the surface snow to propagate as a soft slab.
Expect to encounter smaller windslabs on all aspects in the alpine due to previous shifty winds. They range from 20-40cm thick and have been decreasing in sensitivity over the last 24 hours.
Dig down to test the bond between the recent storm snow and the Mar 15 crust. Forecasters suspect faceting on the Mar 15 crust due to recent cold temps. Seems most sensitive with daytime heating allowing the surface snow to propagate as a soft slab.
Expect to encounter smaller windslabs on all aspects in the alpine due to previous shifty winds. They range from 20-40cm thick and have been decreasing in sensitivity over the last 24 hours.
Persistent slabs sit on facets on polar aspects (more reactive recently), and a hard melt-freeze crust on solar aspects. Use a cautious approach in open terrain and assess the bond at these interfaces carefully before committing to a slope.
In most cases this interface presents as a manageable surface instability and is expected to go dormant pretty quickly.
Cornices continue to grow with fresh snow and wind. Several failures were noted in the past week, in most cases triggering a slab below.
Previous strong and variable winds have blown available snow around and loaded lee features tree line and above. While these slabs are fresh they will be susceptible to human triggering, especially in steep, unsupported terrain or with solar heating.
70-90cm of settled snow sits on the mid March crust/facet combo. In recent tests this layer fails suddenly and has showed potential for wide propagation if triggered. Avoid convexities and thin snowpack areas on solar aspects.
Dig down to test the bond between the recent storm snow and the Mar 15 crust. Forecasters suspect faceting on the Mar 15 crust due to recent cold temps. Seems most sensitive with daytime heating allowing the surface snow to propagate as a soft slab.
Expect to encounter smaller windslabs on all aspects in the alpine due to previous shifty winds. They range from 20-40cm thick and have been decreasing in sensitivity over the last 2 days.
Persistent slabs sit on facets on polar aspects (more reactive recently), and a hard melt-freeze crust on solar aspects. Use a cautious approach in open terrain and assess the bond at these interfaces carefully before committing to a slope.
In most cases this interface presents as a manageable surface instability and is expected to go dormant pretty quickly.
Cornices continue to grow with fresh snow and wind. Several failures were noted in the past week, in most cases triggering a slab below.
Dig down to test the bond between the recent storm snow and the Mar 15 crust. Forecasters suspect faceting on the Mar 15 crust due to recent cold temps. Seems most sensitive with daytime heating allowing the surface snow to propagate as a soft slab.
Expect to encounter smaller windslabs on all aspects in the alpine due to previous shifty winds. They range from 20-40cm thick and have been decreasing in sensitivity over the last 2 days.
Recent shifting winds have created easily identifiable wind slabs above treeline. More subtle wind loaded pockets exist in lee features and can easily be triggered by skiers. Watch for these pockets around cornices, wind lips and roll overs.
70-90cm of settled snow sits on the mid March crust/facet combo. This layer appears to be bonding well on polar aspects. On solar aspects, this layer fails suddenly in stability tests and has shown potential for wide propagation if triggered.
Dig down to test the bond to the Mar 15 crust, bearing in mind that the bond can vary significantly with subtle changes in slope aspect and steepness. Forecasters suspect this problem is developing with&nbsp; faceting on the crust due to recent cold temps
Expect to encounter smaller windslabs in the alpine. They range from 20-40cm thick and have been decreasing in sensitivity over the last couple of days. Watch for the incoming storm to establish new slabs Saturday and Sunday.
Dig down to test the bond to the Mar 15 crust, bearing in mind that the bond can vary significantly with subtle changes in slope aspect and steepness. Forecasters suspect this problem is developing with faceting on the crust due to recent cold temps
Expect to encounter smaller windslabs in the alpine. They range from 20-40cm thick and have been decreasing in sensitivity over the last couple of days. Watch for the incoming storm to establish new slabs Saturday and Sunday.
New moist snow available for transport with incoming flurries. This will build on surface layers and may be enough to overload existing and lingering instabilities.
Persistent slabs sit on facets on polar aspects (more reactive recently), and a hard melt-freeze crust on solar aspects. Use a cautious approach in open terrain and assess the bond at these interfaces carefully before committing to a slope.
Cornices continue to grow with fresh snow and wind. Several failures were noted in the past week, in most cases triggering a slab below.
Recent shifting winds have created wind slabs above treeline. More subtle wind loaded pockets exist in lee features &amp; can easily be triggered by skiers. Watch for these pockets around cornices, wind lips and roll overs. New snow may hide these slabs
70-90cm of settled snow sits on the mid March crust/facet combo. This layer appears to be bonding well on polar aspects. On solar aspects, this layer fails suddenly in stability tests and has shown potential for wide propagation if triggered.
Dig down to test the bond to the Mar 15 crust, bearing in mind that the bond can vary significantly with subtle changes in slope aspect and steepness. Forecasters suspect this problem is developing with faceting on the crust due to recent cold temps.
Expect to encounter smaller wind slabs in the alpine. They range from 20-40cm thick and have been decreasing in sensitivity over the last couple of days. Incoming snow and wind could see new small wind slabs near ridge top.
Windslabs have developed in exposed alpine and treeline locations 10-30cm thick. They are generally well bonded but pockets of instability exist. Some propagations of 50-100m were noted last week.&nbsp; &nbsp; </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Persistent slabs sit on facets on North aspects and a hard melt-freeze crust on solar aspects. Use a cautious approach in open terrain and assess the bond at these interfaces before committing to a slope.
Cornices continue to grow with fresh snow and wind. Several failures were noted in the past week with some triggering a slab below. Potential for cornice failures increases with sun and warmth.
Dig down to test the bond to the Mar 15 crust, bearing in mind that the bond can vary significantly with subtle changes in slope aspect and steepness. Forecasters suspect this problem is developing with faceting on the crust due to recent cold temps.
Previous wind slabs are still present in alpine regions but have been losing sensitivity. New snow in the forecast will bury these and may form smaller ones near ridge crests.
A layer of storm snow sits over windslab at and above treeline. Watch for wind loading in lee features. Expect these pockets around cornices, wind lips and roll overs. Solar input and a warming trend today may wake surface layers on S'ly aspects.
70-90cm of settled snow sits on the mid March crust/facet combo. This layer appears to be bonding well on polar aspects. On solar aspects, this layer fails suddenly in stability tests and has shown potential for wide propagation if triggered.
Dig down to test the bond to the Mar 15 crust, bearing in mind that the bond can vary significantly with subtle changes in slope aspect and steepness. Forecasters suspect this problem is developing with faceting on the crust due to recent cold temps.
Recent new snow and wind have created new soft wind slabs in immediate lees in the alpine.
Dig down to test the bond to the Mar 15 crust, bearing in mind that the bond can vary significantly with subtle changes in slope aspect and steepness. Forecasters suspect this problem is developing with faceting on the crust due to recent cold temps.
Recent new snow and wind have created new soft wind slabs in immediate lees in the alpine.
Pockets of 10-30cm thick windslabs are in high elevation alpine ridgetops and crossloaded gullies. They are generally well bonded but pockets of instability exist. Propagations of 50-100m were noted last week but have subsided. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Persistent slabs sit on facets on North aspects and a hard melt-freeze crust on solar aspects. Use a cautious approach and assess the bond at these interfaces before committing to a slope.
Moist surface snow ran naturally and was easily triggered by skiers on steeper terrain yesterday. With little overnight recovery below 1900m expect this problem to continue today.
70-90cm of settled snow sits on the mid March crust/facet combo. This layer appears to be bonding well on polar aspects. On S'ly aspects, this layer fails suddenly in stability tests. Continued warming and overloading may cause this layer to fail.
Persistent slabs sitting on facets on Northerly aspects continue to show isolated signs of reactivity. Travel on large Northerly features at treeline and in the alpine is not recommended.
Moderate south west winds in the alpine continue to build fresh pockets of wind slab.
Dig down to find and test the bond of the surface snow with the Mar 15 crust down 25-50 cm on steep solar aspects, bearing in mind that the bond can vary significantly with subtle changes in slope aspect, steepness or warming temperatures.
Recent new snow and moderate West winds have created wind slabs in immediate lees areas of the alpine that can be triggered by skiers in some locations. This problem may increase later in the day on Tuesday as more snow arrives.
Dig down to find and test the bond of the surface snow with the Mar 15 crust down 25-50 cm on steep solar aspects, bearing in mind that the bond can vary significantly with subtle changes in slope aspect, steepness or warming temperatures.
Recent new snow and moderate West winds have created wind slabs in immediate lees areas of the alpine that can be triggered by skiers in some locations. This problem may increase later in the day on Tuesday as more snow arrives.
70-90cm of settled snow sits on the mid March crust/facet combo and fails suddenly in the mod-hard range in stability tests on solar aspects. This layer might become more active with the incoming snow/rain and rising temperatures.
Persistent slabs sitting on facets on Northerly aspects continue to show isolated signs of reactivity. On solar aspects buried solar crusts present a sliding surface up to 80cm down. Triggering may occur from shallow snowpack areas some distance out.
Moderate southerly winds in the alpine continue to build fresh pockets of wind slab. Once started these slabs may trigger deeper releases running surprisingly far into the valley under these cooler conditions.
Forecasters are still concerned about the March 15 crust which is down 25-50 cm on steeper solar aspects. There as been sporadic but regular skier triggered avalanches on this layer over the past several weeks.
This wind slabs can be expected in the high alpine on lee aspects.
Forecasters are still concerned about the March 15 crust which is down 25-50 cm on steeper solar aspects. There as been sporadic but regular skier triggered avalanches on this layer over the past several weeks.
This wind slabs can be expected in the high alpine on lee aspects.
70-90cm of settled snow sits on the mid March crust/facet combo and fails suddenly in the moderate-hard range in stability tests on solar aspects.
Persistent slabs sitting on facets on Northerly aspects continue to show isolated signs of reactivity. Triggering may occur from shallow snowpack areas some distance out.
Moderate southerly winds in the alpine continue to build pockets of wind slab. Once triggered, these slabs may trigger deeper releases running far into the valley.
This wind slabs can be expected in the high alpine on lee aspects. Forecasted East wind for Thursday may reverse load some slopes.
Forecasters are still concerned about the March 15 crust which is down 25-50 cm on steeper solar aspects. There has been sporadic but regular skier and explosive triggered avalanches on this layer over the past several weeks.
Wind slabs can be expected in the high alpine on lee aspects. Forecasted East wind for Thursday may reverse load some slopes.
Forecasters are still concerned about the March 15 crust which is down 25-50 cm on steeper solar aspects. There has been sporadic but regular skier and explosive triggered avalanches on this layer over the past several weeks.
On Tuesday evening winds reached extreme values from the South forming wind slabs. We also have a persistent layer we're tracking down 70-90cm, which is currently dormant but may wake up with a big enough trigger.
This wind slabs can be expected in the high alpine on lee aspects.&nbsp;  These have been losing sensitivity over the past few days.&nbsp;
Forecasters are still concerned about the March 15 crust which is down 25-50 cm on steeper solar aspects. There has been sporadic but regular skier and explosive triggered avalanches on this layer over the past several weeks.
Persistent slabs sitting on facets on Northerly aspects continue to show sporadic signs of reactivity. The slab sits on buried temperature crusts on South aspects. Triggering may occur from shallow snowpack areas some distance out.
Moderate southerly winds in the alpine continue to build pockets of wind slab. Once triggered, these slabs may trigger deeper releases running far into the valley.
This wind slabs can be expected in the high alpine on lee aspects. These have been losing sensitivity over the past few days.
Forecasters are still concerned about the March 15 crust which is down 25-50 cm on steeper solar aspects. There has been sporadic but regular skier and explosive triggered avalanches on this layer over the past several weeks.
Strong SW winds overnight. Expect to see pockets of wind slab on lee features at higher elevation. A persistent layer down 70-90cm is currently dormant but may wake up with a big enough trigger such as a wind slab or cornice triggered avalanche.
Expect loose wet avalanches to start running from steep slopes when temps warm up. Watch out for terrain traps where these small avalanches could have severe consequences. 
Warm temps and strong winds are rapidly building windslabs from new snow in NE features.
Treat cornices with extreme caution. They are growing with the new snow and winds and becoming fragile with the warming temperatures.
With some new snow and stronger SW winds the wind slabs have become a bit more reactive over the past 24 hrs, especially where present over a buried sun crust.
Forecasters are still concerned about the Mar 15 sun crust which is down 25-50 cm on steeper solar aspects. There have been sporadic skier and explosive triggered avalanches on this layer over the past several weeks, but nothing in the last few days.
A slab up to 80cm thick overlies: weak faceted crystals (well developed in shallow areas), surface hoar (at, and just above treeline), and sun crusts ( on steep S and W aspects). Faceting has reduced slab strength below treeline and in shallow areas.
Previous wind effect will be difficult to assess under new snow. Expect hardslabs in the alpine and at treeline. The cold has reduced the tension in these but caution is still warranted, especially as new snow arrives over the next few days.
Cornice failure noted in Shangrila on Friday releasing a size 2.5 slab below.
With some new snow and stronger SW winds the wind slabs have become a bit more reactive over the past 24 hrs, especially where present over a buried sun crust.
Forecasters are still concerned about the Mar 15 sun crust which is down 25-50 cm on steeper solar aspects. There have been sporadic skier and explosive triggered avalanches on this layer over the past several weeks, but nothing in the last few days.
25cm of snow in the last 24hrs with strong to extreme winds has created widespread storm slabs on all aspects at Treeline and in the Alpine. Expect the strong winds to have scoured south aspects &amp; created firm windslabs on North facing slopes.
Overloaded and under tension, new and buried windslab in the Alpine and TL will be sensitive to further loads, like more wind, more snow, and riders.
A slab up to 1m thick overlies: weak faceted crystals (well developed in shallow areas), surface hoar (at, and just above treeline), and sun crusts (on steep S and W aspects). Faceting has reduced slab strength below treeline and in shallow areas.
Large cornices noted in all areas of the bulletin region.
Gusty winds and new snow have formed touchy soft slabs that are reacting easily to skier traffic and starting to fail as natural events. Watch for another pulse of snow to either contribute to these slabs or potentially hide them.
While it has been a few days since there has been any confirmed events directly associated with the March 15 crust, other crusts have now become buried in similar locations. Forecasters still voice caution with all of these potential sliding layers.
There have been a few recent cornice failures mainly associated with the recent wind and snow but as temperatures climb a bit higher than they have been Monday and Tuesday it would be wise to keep these in mind.
Gusty winds and new snow have formed touchy soft slabs that are reacting easily to skier traffic and starting to fail as natural events. Watch for another pulse of snow to either contribute to these slabs or potentially hide them.
While it has been a few days since there has been any confirmed events directly associated with the March 15 crust, other crusts have now become buried in similar locations. Forecasters still voice caution with all of these potential sliding layers.
There have been a few recent cornice failures mainly associated with the recent wind and snow but as temperatures climb a bit higher than they have been Monday and Tuesday it would be wise to keep these in mind.
Over 30cm in last 48hrs initially accompanied by strong to extreme winds has created widespread storm slabs on all aspects at Treeline and in the Alpine. Expect the strong winds to have scoured S aspects &amp; created firm windslabs on N facing terrain.
The forecast calls for cloudy with sunny periods. If the sun does decide to make an appearance today solar radiation may initiate loose wet slides on steeper Southerly aspects. Rain possible later today will also destabilize surface layers.
Gusty winds and new snow have formed soft slabs that are reacting to skier traffic. Watch for another pulse of snow to either contribute to these slabs or potentially hide them.
While it has been a few days since there has been any confirmed events directly associated with the March 15 crust, other crusts have now become buried in similar locations. Forecasters still voice caution with all of these potential sliding layers.
Gusty winds and new snow have formed soft slabs that are reacting to skier traffic. Watch for another pulse of snow to either contribute to these slabs or potentially hide them.
While it has been a few days since there has been any confirmed events directly associated with the March 15 crust, other crusts have now become buried in similar locations. Forecasters still voice caution with all of these potential sliding layers.
Overloaded and under tension, new and buried windslab in the Alpine and TL is sensitive to further loads, like more wind, more snow, more sun and, especially riders.
Large cornices in all areas of the bulletin region. These failures are triggering persistent instabilities and the subsequent avalanches are proving large and destructive. Give these features a lot of room.
A slab up to 1m thick overlies: weak faceted crystals, and sun crusts (on steep S and W aspects). This problem has been associated with large triggers like cornices and the subsequent avalanches are proving large and destructive.
This layer is widespread and most pronounced at treeline elevation. It will be most reactive in areas where wind loading has occurred and encouraged slab development.
It is still possible to trigger this layer but it will be in the isolated, steep spot.  Be careful around steep terrain where a stiffer, more cohesive slab exists over the weak snow at the base of the snowpack.
It is still possible to trigger this layer but it will be in the isolated, steep spot. Be careful around steep terrain where a stiffer, more cohesive slab exists over the weak snow at the base of the snowpack.
Previous strong winds have left widely scoured surfaces with pockets of hard windslab.
Although currently dormant, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.
This layer is widespread and most pronounced at treeline elevation. It will be most reactive in areas where wind loading has occurred and encouraged slab development.
Although currently dormant, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.
It is still possible to trigger this layer but it will be in the isolated, steep spot. Be careful around steep terrain where a stiffer, more cohesive slab exists over the weak snow at the base of the snowpack.
It is still possible to trigger this layer but it will be in the isolated, steep spot. Be careful around steep terrain where a stiffer, more cohesive slab exists over the weak snow at the base of the snowpack.
This layer is widespread and most pronounced at treeline elevation. It will be most reactive in areas where wind loading has occurred and encouraged slab development.
Although currently dormant, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
This layer can be found at tree line and in the alpine but spotty in its distribution. It will be most reactive in areas where wind loading has occurred and encouraged slab development.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
Although currently dormant, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.
This layer can be found at tree line and in the alpine but spotty in its distribution. It will be most reactive in areas where wind loading has occurred and encouraged slab development.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
Some light wind transport on Tuesday has created small thin wind slabs in lee areas at higher elevation. They appear to be reactive to ski cutting but are very thin and small.
Although currently dormant, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
Some light wind transport on Tuesday has created small thin wind slabs in lee areas at higher elevation. They appear to be reactive to ski cutting but are very thin and small.
This layer can be found at tree line and in the alpine but spotty in its distribution. It will be most reactive in areas where wind loading has occurred on lee aspects and on steep solar aspects where the surface hoar sits on a crust.
Although currently dormant, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.
5-10cm of recent low density snow will form Windslabs as winds increase.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
Some light wind transport on Tuesday created small thin wind slabs in lee areas at higher elevations. They appear to be reactive to ski cutting but are generally thin and small.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
Some light wind transport on Tuesday created small thin wind slabs in lee areas at higher elevations. They appear to be reactive to ski cutting but are generally thin and small.
This layer can be found at all elevations, but is spotty in its distribution. It will be most reactive in wind loaded areas and on steep solar aspects where the surface hoar sits on a crust.
Although currently dormant, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.
Some light wind transport on Tuesday created small thin wind slabs in lee areas at higher elevations. They appear to be stubborn to ski cutting and are generally thin and small.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
Some light wind transport on Tuesday created small thin wind slabs in lee areas at higher elevations. They appear to be stubborn to ski cutting and are generally thin and small.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
This layer can be found at all elevations, but is spotty in its distribution. It will be most reactive in wind loaded areas and on steep solar aspects where the surface hoar sits on a crust.
These are getting quite old but are up to 40 cm deep in the immediate lees of alpine features. Although small in size, these slabs can provide the push to get the deep persistent slab problem initiated.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
Although currently dormant, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.
These are getting quite old but are up to 40 cm deep in the immediate lees of alpine features. Although small in size, these slabs can provide the push to get the deep persistent slab problem initiated.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
This layer can be found at all elevations, but is spotty in its distribution. It will be most reactive in wind loaded areas and on steep solar aspects where the surface hoar sits on a crust.
Although currently dormant, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.
These are getting quite old but are up to 40 cm deep in the immediate lees of alpine features. Although small in size, these slabs can provide the push to get the deep persistent slab problem initiated.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
These are getting quite old but are up to 40 cm deep in the immediate lees of alpine features. Although small in size, these slabs can provide the push to get the deep persistent slab problem initiated.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
This layer can be found at all elevations, but is spotty in its distribution. It will be most reactive in wind loaded areas and on steep solar aspects where the surface hoar sits on a crust.
These are getting quite old but are up to 40 cm deep in the immediate lees of alpine features. Although small in size, these slabs can provide the push to get the deep persistent slab problem initiated.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
5-10cm of new snow with an additional 5-10 cm of snow forecasted on Tuesday will start to create touchy new windslabs in alpine lees. These new windslabs are burying some old, stubborn windslabs that have been sporadically reactive over the last week
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
Although currently dormant, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists on most skiable slopes.
Forecasted snow values will overlay a variety a weak surface forms providing a poor bond at the new snow interfaces. The timing and intensity of this storm is still uncertain.
Isolated pockets of soft windslab can be expected on alpine and treeline lee features. Be cautious moving into wind effected terrain.
This layer can be found at all elevations, but is spotty in its distribution. It will be most reactive in wind loaded areas and on steep solar aspects where the surface hoar sits on a crust.
Newly formed wind slabs will likely not bond well to underlying surfaces. They rest on old slabs, up to 40 cm deep. These slabs can provide the push to get the deep persistent slab problem initiated or entrain the weak faceted snowpack.
As load increases through the week, it may become more reactive in isolated, steep spots &amp; adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
As the snowfall intensifies expect to see loose avalanche run from cliffy terrain into terrain features such as gullies.
Storm slabs will build over the next few days as the new snow intensifies.
Although currently dormant, the increasing load of new snow and upper snowpack releases is expected to trigger this deeply buried layer later in the week .
Up to 10 cm today and another 10 tonight with moderate to strong SW winds will create fresh slabs by Wed am. These new wind slabs are burying some old, stubborn wind slabs that have been sporadically reactive over the last week.
It is still possible to trigger this layer but it will be in isolated, steep spots and often adjacent to thin rocky areas. Be cautious in steep terrain where a stiffer, more cohesive slab exists over the weak faceted snow at the base of the snowpack.
40cm of new snow and strong winds are great ingredients for storm slabs. The storm snow is sitting on a mix of facets, surface hoar and crusts. The storm slab will be easy for skiers and riders to trigger on steep slopes today and tomorrow.
This layer can be found at all elevations, but is spotty in its distribution. It will be most reactive in wind loaded areas and on steep solar aspects where the surface hoar sits on a crust.
Wind is the dominant feature of the current storm, and combined with the new snow will have created deep windslabs. These could be easily triggered over the next few days, or you could be hit from above if you are in confined areas (ice climbers).
The mid and lower portions of the snowpack are weak and will not tolerate much additional load before releasing large avalanches. As you poke your head out of the treeline in the next 48-hours, be very wary of overhead hazard.
Wind is the dominant feature of the current storm, and combined with the new snow will have created deep windslabs. These could be easily triggered over the next few days, or you could be hit from above if you are in confined areas (ice climbers).
The mid and lower portions of the snowpack are weak and will not tolerate much additional load before releasing large avalanches. As you poke your head out of the treeline in the next 48-hours, be very wary of overhead hazard.
Fresh slabs will continue to build over the next two days as the storm fronts pass over our region.
As the snowfall intensifies expect to see loose avalanche run from steep terrain.
The increasing load of new snow and smaller storm triggered avalanches will be the first real test of this deeply buried weak layer, best to avoid exposure to avalanche terrain until we have seen the result.
80cm of storm snow and strong winds are great ingredients for storm slabs. The storm snow is sitting on a mix of facets, surface hoar and crusts. Natural Avalanche activity will peak today, storm slabs will be easy for skiers and riders to trigger.
This layer can be found at all elevations, but is spotty in its distribution. It will be most reactive in wind loaded areas and on steep solar aspects where the surface hoar sits on a crust.
Fresh slabs will continue to build over the next day as the storm fronts pass over our region.
As the snowfall intensifies expect to see loose avalanche run from steep terrain.
The increasing load of new snow and smaller storm triggered avalanches will be the first real test of this deeply buried weak layer, best to avoid exposure to avalanche terrain until we have seen the result.
Newly formed windslabs are sitting on a weak snowpack that is a mixed bag of facets and crusts
Up to 40 cm of recent snow along with strong winds will have created storm slabs and wind slabs at all elevation. These slabs are reactive to skier triggering and are running long distances. Ice climbers pay attention to overhead hazard.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer.
Loose dry avalanches have been observed running long distances.
Up to 40 cm of recent snow along with strong winds will have created storm slabs and wind slabs at all elevation. These slabs are reactive to skier triggering and are running long distances. Ice climbers pay attention to overhead hazard.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer.
Loose dry avalanches have been observed running long distances.
110cm of storm snow contains several instabilities and is poorly bonded to the Dec 9 interface. The storm has subsided, but slab formation continues with rising temperatures and strong winds. These slabs will be easy for skiers and riders to trigger.
Up to 40 cm of recent snow along with strong winds will have created storm slabs and wind slabs at all elevation. These slabs are reactive to skier triggering and are running long distances. Ice climbers pay attention to overhead hazard.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer.
Loose dry avalanches have been observed running long distances.
Up to 40 cm of recent snow along with strong winds will have created storm slabs and wind slabs at all elevation. These slabs are reactive to skier triggering and are running long distances. Ice climbers pay attention to overhead hazard.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer.
Loose dry avalanches have been observed running long distances.
The recent storm snow was walloped by extreme southerly winds overnight. Wind loaded pockets will be present on lee and cross loaded features, especially on north aspects. The newly distributed snow load sits atop existing storm instabilities.
The December 9 weak layer is down +100cm. This layer consists of surface hoar, facets and sun crust, depending on the aspect. Natural and human triggered avalanches are still occurring on this layer.
Moderate winds, perfect for slab production has been observed at all elevations. Noticeably sensitive lee areas observed on NE, alpine aspects.
Normally found 20-30cm off the ground. Potential for step-down avalanches if you trigger a wind slab or storm slab.
Up to 40 cm of recent snow along with strong winds will have created storm slabs and wind slabs at all elevation. These slabs are reactive to skier triggering and are running long distances. Ice climbers pay attention to overhead hazard.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer.
Up to 40 cm of recent snow along with strong winds will have created storm slabs and wind slabs at all elevation. These slabs are reactive to skier triggering and are running long distances. Ice climbers pay attention to overhead hazard.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer.
30cm of storm snow since Thursday on the divide along with strong west winds has created windslabs in the alpine and treeline. These are sitting on a weak snowpack and have the potential to step down to deeper layers.
The bottom of the snowpack is a combination of crusts and facets that is reactive to large triggers.
Extreme southerly winds redistributed the storm snow Saturday. Wind slabs will be present on lee and cross-loaded features in the alpine/tree-line, and easily triggered on unsupported convex rolls. These slabs sit atop existing storm instabilities.
The December 9 weak layer is down 60-100cm. This layer consists of surface hoar, facets, and sun crust, depending on the aspect. Natural and human triggered avalanches are still occurring on this layer.
Moderate SW winds continue building windslabs particularly at ridge-tops. These were sensitive in lee areas, most notably NE, treeline and alpine features.
The weak Oct25 crust-facet interface is found 20-30cm off the ground. There is serious potential for step-down avalanches if you trigger the wind or storm slab.
Up to 50cm of recent snow along with strong winds will have created storm slabs and wind slabs at all elevations. These slabs are still reactive to skier triggering. Ice climbers pay attention to overhead hazard.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer.
Up to 50cm of recent snow along with strong winds will have created storm slabs and wind slabs at all elevations. These slabs are still reactive to skier triggering. Ice climbers pay attention to overhead hazard.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer.
New snow and moderate - strong winds are producing wind slabs and can be found on lee and cross-loaded features in the alpine and tree line and easily triggered on unsupported convex rolls. These slabs sit atop existing storm instabilities.
The December 9 weak layer is down 60-100cm. This layer consists of surface hoar, facets, and sun crust, depending on the aspect and producing sudden planar test results. Natural and human triggered avalanches are still occurring on this layer.
Up to 50cm of recent snow with additional storm snow expected will have created storm slabs and wind slabs at all elevations. These slabs will be reactive to skier triggering. Ice climbers pay attention to overhead hazard.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer.
Determining the strength of bond at the Dec11th interface is key to safe travel in avalanche terrain.
Moderate SW winds continue building windslabs particularly at ridge-tops. These were sensitive in lee areas, most notably NE, treeline and alpine features.
Several recent large avalanches have been the result of the entire snowpack failing on or near the ground due to the weak snowpack structure surrounding this interface.
Old windslabs to be bonding well to old surfaces thanks to warm temperatures, but a new set will be forming with the incoming storm on Tuesday.
New snow will increase the load on deep weak layers. We may see the same kind of cycle that our norther neighbours saw last week.
Up to 50cm of recent snow with additional storm snow expected will have created storm slabs and wind slabs at all elevations. These slabs will be reactive to skier triggering. Ice climbers pay attention to overhead hazard.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer.
25cm in the past 36hrs accompanied by moderate winds and near zero temps promoting storm slab formation, particularly on lee and cross loaded features.
The December 9 weak layer is down 70-100cm and consists of surface hoar, facets, and sun crust, depending on the aspect and producing sudden planar test results. Natural and human triggered avalanches are still occurring on this layer.
Another 25-40 cm of new snow is forecast by end of day Thursday. This is falling on 50-70 cm deep storm slabs that have been reactive over the last week. These slabs are sitting on the Dec. 10th layer of facets and surface hoar.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer, especially in thinner snowpack areas.
Another 25-40 cm of new snow is forecast by end of day Thursday. This is falling on 50-70 cm deep storm slabs that have been reactive over the last week. These slabs are sitting on the Dec. 10th layer of facets and surface hoar.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to this deeper layer, especially in thinner snowpack areas.
Determining the strength of bond at the Dec11th interface is key to safe travel in avalanche terrain.
Moderate SW winds have built windslabs particularly at ridge-tops. These are sensitive in the loading zones, most notably NE exposed treeline and alpine features.
Several recent large avalanches have been the result of the entire snowpack failing on or near the ground due to the weak snowpack structure surrounding this interface.
New windslabs have formed with 20-30cm of new snow along the divide. Continued snow and wind Thursday night will continue to build slabs.
New snow has increase the load on deep weak layers. This loading is likely to continue on Thursday Night with continued snowfall, increasing the potential for human triggering.
25cm in the past 36hrs, accompanied by moderate winds and warm temp's, is forming into a cohesive surface storm slab. These will be found in immediate lee features below ridge crests and on cross-loaded slopes.
The Dec 9 weak layer is down 70-100cm and consists of surface hoar, facets, and sun crust, depending on the aspect. Sudden planar results are being seen on this layer. NAtural and human triggered avalanches are still occurring on this layer.
This layer now sits under close to a meter of snow, any terrain that has not had previous activity on this layer should be given a wide berth.
Moderate SW winds and new snow continues to build fresh wind/storm slabs, particularly near ridge-tops.
Several recent large avalanches have been the result of the entire snowpack failing on or near the ground due to the weak snowpack structure surrounding this interface.
Another 30-50 cm of snow is forecast by Fri morning adding to the storm slab. Avoid avalanche terrain. Expect natural avalanches to run down into the treeline. Safe terrain can be found in low angled forest with no exposure to avalanches from above.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to these deeper layers of facets and depth hoar. Avoid avalanche terrain.
Another 30-50 cm of snow is forecast by Fri morning adding to the storm slab. Avoid avalanche terrain. Expect natural avalanches to run down into the treeline. Safe terrain can be found in low angled forest with no exposure to avalanches from above.
The mid and lower portions of the snowpack are weak and are now overloaded with critical levels of snow. We expect avalanches to step down to these deeper layers of facets and depth hoar. Avoid avalanche terrain.
30cm+ of snow in the past 36hrs accompanied by mod S'ly wind and warm temp's, is forming a cohesive surface storm slab. Slabs will be more pronounced in wind effected areas such as immediate lee features below ridge crests and on cross-loaded slopes.
The Dec 9 weak layer is down 70-100cm and consists of surface hoar, facets, and sun crust, depending on the aspect. Sudden planar results are being seen on this layer. Natural and human triggered avalanches are still occurring on this layer.
This layer now sits under close to a meter of snow, any terrain that has not had previous activity on this layer should be given a wide berth.
Moderate SW winds and new snow continues to build fresh wind/storm slabs, particularly near ridge-tops.
Several recent large avalanches have been the result of the entire snowpack failing on or near the ground due to the weak snowpack structure surrounding this interface.
The recent storm snow has almost doubled our snowpack and is failing easily on the Dec 10 interface. Natural avalanches may reach treeline areas. Safe terrain can be found in low angled forest with no exposure to avalanches from above.
Recent snow has now overloaded the weak middle and lower portions of the snowpack. Avalanches are frequently stepping down to these deeper layers of facets and depth hoar. Avoid traveling in&nbsp; avalanche terrain.
The recent storm snow has almost doubled our snowpack and is failing easily on the Dec 10 interface. Natural avalanches may reach treeline areas. Safe terrain can be found in low angled forest with no exposure to avalanches from above.
Recent snow has now overloaded the weak middle and lower portions of the snowpack. Avalanches are frequently stepping down to these deeper layers of facets and depth hoar. Avoid traveling in avalanche terrain.
caution shallow trigger locations
50cm+ of snow in the past 72hrs, accompanied by strong SW winds and warm temp's, has formed a storm slab at all elevations. Slabs will be more pronounced in immediate lee features below ridge crests and on cross-loaded slopes. Human triggering likely
The Dec 9 weak layer is down 80-110cm and consists of surface hoar, facets, and sun crust, depending on the aspect. Sudden planar results are being seen on this layer. Natural and human triggered avalanches are still occurring on this layer.
Recent snow has now overloaded the Oct. 26 deep persistent layer of facets and depth hoar, and there is enough mass now to cause large avalanches.
The Dec. 10 persistent layer of facets and surface hoar is now buried 40 - 80cm. Avalanches have either been independently running on this layer, or stepping down to the basal weakness.
Fresh wind slabs from strong winds over the last 2 days have formed within the new storm snow. These will be most prevalent in the lee of features and may stay reactive over the next couple of days.
Recent snow has now overloaded the Oct. 26 deep persistent layer of facets and depth hoar, and there is enough mass now to cause large avalanches.
The Dec. 10 persistent layer of facets and surface hoar is now buried 40 - 80cm. Avalanches have either been independently running on this layer, or stepping down to the basal weakness.
Fresh wind slabs from strong winds over the last 2 days have formed within the new storm snow. These will be most prevalent in the lee of features and may stay reactive over the next couple of days.
This layer now sits under a meter of snow, any terrain that has not had previous activity on this layer should be given a wide berth.
Moderate SW winds and new snow continues to build fresh wind, particularly near ridge-tops.
Several recent large avalanches have been the result of the entire snowpack failing on or near the ground due to the weak snowpack structure surrounding this interface.
50cm+ of storm snow, accompanied by strong SW winds and warm temp's, has formed a storm slab at all elevations; especially in immediate lee features below ridge crests and on cross-loaded slopes. Solar input may trigger slabs on steep, S'ly aspects.
The Dec 9 weak layer is down 80-110cm and consists of surface hoar, facets, and sun crust, depending on the aspect. Sudden planar results are being seen on this layer. Natural and human triggered avalanches may still occur on this layer.
Moderate SW winds and new snow continues to build fresh wind, particularly near ridge-tops.
This layer now sits under a meter of snow, any terrain that has not had previous activity on this layer should be given a wide berth.
Several recent large avalanches have been the result of the entire snowpack failing on or near the ground due to the weak snowpack structure surrounding this interface.
Recent snow has now overloaded the Oct. 26 deep persistent layer of facets and depth hoar, and there is enough mass now to cause large avalanches.
The Dec. 10 persistent layer of facets and surface hoar is now buried 40 - 80cm. Avalanches have either been independently running on this layer, or stepping down to the basal weakness.
Fresh wind slabs from strong winds over the last 2 days have formed within the new storm snow. These will be most prevalent in the lee of features and may stay reactive over the next couple of days.
Recent snow has now overloaded the Oct. 26 deep persistent layer of facets and depth hoar, and there is enough mass now to cause large avalanches.
The Dec. 10 persistent layer of facets and surface hoar is now buried 40 - 80cm. Avalanches have either been independently running on this layer, or stepping down to the basal weakness.
Fresh wind slabs from strong winds over the last 2 days have formed within the new storm snow. These will be most prevalent in the lee of features and may stay reactive over the next couple of days.
The Dec 9 weak layer is down 80-110cm and consists of surface hoar, facets, and sun crust, depending on the aspect. Sudden planar results are being seen on this layer. Natural and human triggered avalanches may still occur on this layer.
50cm+ of storm snow, accompanied by strong SW winds and warm temp's, has formed a storm slab at all elevations; especially in immediate lee features below ridge crests and on cross-loaded slopes. Solar input may trigger slabs on steep, S'ly aspects.
Recent snow has now overloaded the Oct. 26 deep persistent layer of facets and depth hoar, and there is enough mass now to cause large avalanches.
The Dec. 10 persistent layer of facets and surface hoar is now buried 40 - 80cm. Avalanches have either been independently running on this layer, or stepping down to the basal weakness.
Fresh wind slabs from strong winds over the last 2 days have formed within the new storm snow. These will be most prevalent in the lee of features and may stay reactive over the next couple of days.
Recent snow has now overloaded the Oct. 26 deep persistent layer of facets and depth hoar, and there is enough mass now to cause large avalanches.
The Dec. 10 persistent layer of facets and surface hoar is now buried 40 - 80cm. Avalanches have either been independently running on this layer, or stepping down to the basal weakness.
Fresh wind slabs from strong winds over the last 2 days have formed within the new storm snow. These will be most prevalent in the lee of features and may stay reactive over the next couple of days.
Moderate to strong&nbsp; south west winds have created firm windslabs&nbsp; in the alpine and exposed treeline slopes.
This layer now sits under a meter of snow, any terrain that has not had previous activity on this layer should be given a wide berth.
Several recent large avalanches have been the result of the entire snowpack failing on or near the ground due to the weak snowpack structure surrounding this interface.
The Dec 9 and Nov 21 persistent weak layers are down ~100-120cm and consists of surface hoar, facets, or a sun crust. Sudden test results are being seen on this layer. Human triggered avalanches on these layers remains possible.
We have minimal observations from alpine terrain and have concerns of lingering pockets of wind slab; especially in immediate lee features below ridge crests and on cross-loaded slopes. Use caution and tread carefully entering new terrain.
Wind slabs may be sitting on a weak facet layer in some areas. Carefully evaluate the snowpack as you transition into treeline and alpine terrain.
Though we have not been seeing many recent results on this layer, the potential to trigger it remains in thin snowpack areas
This problem dominates the central and eastern part of the forecast region and will continue to do so for some time. Continue to avoid large, open avalanche prone slopes at treeline and in the alpine as these cannot yet be trusted.
The Dec 10 surface hoar and facets can be found 40-80 cm down in the deeper (western) parts of the forecast region. The layer is stabilizing, but continues to be a concern at at in treeline gladed areas.
Moderate to strong south west winds have created firm windslabs in the alpine and exposed treeline slopes.
This layer now sits under a meter of snow, any terrain that has not had previous activity on this layer should be given a wide berth.
Several recent large avalanches have been the result of the entire snowpack failing on or near the ground due to the weak snowpack structure surrounding this interface.
This problem dominates the central and eastern part of the forecast region and will continue to do so for some time. Continue to avoid large, open avalanche prone slopes at treeline and in the alpine as these cannot yet be trusted.
The Dec 10 surface hoar and facets can be found 40-80 cm down in the deeper (western) parts of the forecast region. The layer is stabilizing, but continues to be a concern at at in treeline gladed areas.
The Dec 9 and Nov 21 persistent weak layers are down ~100-120cm and consists of surface hoar, facets, or a sun crust. Sudden test results are being seen on this layer. Human triggered avalanches on these layers remains possible.
We have minimal observations from alpine terrain and have concerns of lingering pockets of wind slab; especially in immediate lee features below ridge crests and on cross-loaded slopes. Use caution and tread carefully entering new terrain.
The new snow from last week is settling and the interface with the old snow surface, buried up to a meter deep, is strengthening. Large triggers such as cornices have produced several releases in the past 48hrs.
The base of the snowpack is weak and facetted.  Likely trigger locations are around rocks, where cold air can penetrate to the base of the snowpack, and shallow snowpack  locations.
Winds have abated on all but the highest ridge tops where slabs will be at their most developed.
This problem dominates the central and eastern part of the forecast region and will continue to do so for some time. Continue to avoid large, open avalanche prone slopes at treeline and in the alpine as these cannot yet be trusted.
The Dec 10 surface hoar and facets can be found 40-80 cm down in the deeper (western) parts of the forecast region. The layer is stabilizing, but continues to be a concern .
This problem dominates the central and eastern part of the forecast region and will continue to do so for some time. Continue to avoid large, open avalanche prone slopes at treeline and in the alpine as these cannot yet be trusted.
The Dec 10 surface hoar and facets can be found 40-80 cm down in the deeper (western) parts of the forecast region. The layer is stabilizing, but continues to be a concern .
We have minimal observations from alpine terrain and have concerns of lingering pockets of wind slab; especially in immediate lee features below ridge crests and on cross-loaded slopes. Use caution and tread carefully entering new terrain.
The Dec 9 and Nov 21 persistent weak layers are down ~100-120cm and consists of surface hoar, facets, or a sun crust depending on aspect and elevation. Human triggered avalanches on these layers are unlikely but still possible.
The new snow from last week is settling and the interface with the old snow surface, buried up to a meter deep, is strengthening. Large triggers such as cornices have produced several releases since the last storm.
The base of the snowpack is weak and facetted. Likely trigger locations are around rocks, where cold air can penetrate to the base of the snowpack, and shallow snowpack locations.
Winds have abated on all but the highest ridge tops where slabs will be at their most developed.
This problem dominates the central and eastern part of the forecast region and will continue to do so for some time. Natural activity on this layer has decreased but human triggered avalanches on this layer are still possible.
This problem is the Dec 10 surface hoar/facet layer which is down 40-80 cm along the Divide. Although this layer is stabilizing, there is still uncertainty with this interface. Evaluate this layer carefully prior to committing to bigger slopes.
This problem dominates the central and eastern part of the forecast region and will continue to do so for some time. Natural activity on this layer has decreased but human triggered avalanches on this layer are still possible.
This problem is the Dec 10 surface hoar/facet layer which is down 40-80 cm along the Divide. Although this layer is stabilizing, there is still uncertainty with this interface. Evaluate this layer carefully prior to committing to bigger slopes.
We have minimal observations from alpine terrain and have concerns of lingering pockets of wind slab; especially in immediate lee features below ridge crests and on cross-loaded slopes. Use caution and tread carefully entering new terrain.
The Dec 9 and Nov 21 persistent weak layers are down ~100-120cm and consists of surface hoar, facets, or a sun crust depending on aspect and elevation. Human triggered avalanches on these layers are unlikely but still possible.
This problem is a slab overlying the Dec 10 surface hoar/facet layer which is down 40-80 cm. Although this layer is gaining strength, there is still uncertainty with this interface. Evaluate this layer carefully prior to committing to bigger slopes.
This problem dominates the central and eastern part of the forecast region and will continue to do so for some time. Natural activity on this layer has decreased but human triggered avalanches on this layer are still possible.
The new snow from last week is settling and the interface with the old snow surface, buried up to a meter deep, is strengthening. Large triggers such as cornices have produced several releases since the last storm.
The base of the snowpack is weak and facetted. Likely trigger locations are around rocks, where cold air can penetrate to the base of the snowpack, and shallow snowpack locations.
Winds have abated on all but the highest ridge tops where slabs will be at their most developed.
New windslabs will be forming with incoming precipitation and wind on Saturday, but snowfall amounts are uncertain. Keep an eye on how much snow actually arrives, these will be developing on facetted low density snow and may be easy to trigger
Though we have not been seeing many recent results on this layer, the potential to trigger it remains in thin snowpack areas.
We have limited field observations from alpine terrain. Entrances to steep alp/ TL terrain may have lingering pockets of wind slab especially in immediate lee features below ridge crests and on cross-loaded slopes. Use caution entering new terrain.
The Dec 9 and Nov 21 persistent weak layers are down ~100-120cm and consists of surface hoar, facets, or a sun crust depending on aspect and elevation. Human triggered avalanches on these layers are unlikely but still possible.
This problem dominates the central and eastern part of the forecast region and will continue to do so for some time. Natural activity on this layer has decreased but human triggered avalanches on this layer are still possible.
The new snow is forecast to come in with strong winds in the alpine which will create slabs.
The new snow will fall on to settle snow from last week. Below this the interface with the old snow surface, buried up to a meter deep, is strengthening however, large triggers such as cornices have produced several releases recently.
The base of the snowpack is weak and facetted. Likely trigger locations are around rocks, where cold air can penetrate to the base of the snowpack, and shallow snowpack locations.
This problem is a slab overlying the Dec 10 surface hoar/facet layer which is down 40-80 cm. Although this layer is gaining strength, there is still uncertainty with this interface. Evaluate this layer carefully prior to committing to bigger slopes.
Heavy snowfall, warming temperatures and moderate SW winds are working together to form fresh storm slabs. The bond to the cold, old snow surface will need time to strengthen. Expect the storm slab to be sensitive to human and natural triggering.
The Dec 9 and Nov 21 persistent weak layers are down ~100cm+ and consists of surface hoar, facets, or a sun crust depending on aspect and elevation.  With new rapid load these weak layers may wake up again.
This problem dominates the central and eastern part of the forecast region and will continue to do so for some time. Natural activity on this layer has decreased but human triggered avalanches on this layer are still possible.
This problem is a slab overlying the Dec 10 surface hoar/facet layer which is down 40-80 cm. Although this layer is gaining strength, there is still uncertainty with this interface. Evaluate this layer carefully prior to committing to bigger slopes.
The new snow has come with strong winds at all elevations. Avoid overhead avalanche terrain during periods of heavy loading
The new snow will fall on to settle snow from last week. Below this the interface with the old snow surface, buried up to a meter deep, is strengthening however, large triggers such as cornices have produced several releases recently.
The base of the snowpack is weak and facetted. Likely trigger locations are around rocks, where cold air can penetrate to the base of the snowpack, and shallow snowpack locations.
40cm+ storm snow with mod SW winds and warm temps has formed a touchy storm slab. The bond at the old snow surface is weak. The bond to the old snow surface will need time to strengthen. Expect the storm slab to be sensitive to human triggering.
The Dec 9 and Nov 21 persistent weak layers are down ~120cm+ and consists of surface hoar, facets, or a sun crust depending on aspect and elevation. With the new load these weak layers may wake up again.
A stiff slab overlying a&nbsp; weak lower snowpack comprised of facets and depth hoar can be found in most areas of the region (generally central and eastern) where&nbsp; a shallow snowpack exists. Give this weak snowpack some time to adjust to the storm load.
Strong SW winds blew mid-storm on Saturday creating touchy new slabs. While the cold temperatures that have followed can be expected to diminish the sensitivity of these slabs, they certainly deserve some respect for the next little while.
This problem is a slab overlying the Dec 10 surface hoar/facet layer which is down 50-90 cm. Although this layer is gaining strength, there is still uncertainty with this interface. Evaluate this layer carefully prior to committing to bigger slopes.
Strong SW winds blew mid-storm on Saturday creating touchy new slabs. While the cold temperatures that have followed can be expected to diminish the sensitivity of these slabs, they certainly deserve some respect for the next little while.
The recent snow came with strong winds at all elevations.
Even a small loose slide could have serious consequences for Ice Climbers
The new snow has added to the load on the Dec 11th weak interface.&nbsp; Buried more than a meter deep in some locations, this layer is strengthening but has been reactive to large triggers such as cornices recently.
40cm storm snow with mod SW winds and warm temps has formed a storm slab. The bond at the old snow surface is strengthening but it will still be sensitive to human triggering. The cold temp's may make it stubborn to trigger, but travel conservatively
The Dec 9/Nov 21 persistent weak layers are down ~120cm+ and consist of surface hoar, facets, or a sun crust depending on aspect and elevation. Yesterday's Bruins Ridge avalanche likely stepped down to this layer.
A stiff slab overlying a weak lower snowpack comprised of facets and depth hoar can be found in most areas of the region (generally central and eastern) where a shallow snowpack exists. Give this weak snowpack some time to adjust to the storm load.
Strong SW winds blew mid-storm on Dec. 29th creating touchy new slabs. While the cold temperatures that have followed have diminished the sensitivity of these slabs, they are still reactive with explosives in steep terrain.
The recent snow came with strong winds at all elevations yet surprisingly little natural activity noted.
Even a small loose slide could have serious consequences for Ice Climbers. Expect the potential for loose avalanches in steep terrain with recent 35cm of snow from Saturday.&nbsp;
The new snow has added to the load on the Dec 11th weak interface. Buried more than a meter deep in some locations, this layer is strengthening but has been reactive to large triggers such as cornices recently.
Strong SW winds blew mid-storm on Dec. 29th creating touchy new slabs. While the cold temperatures have diminished the sensitivity of these slabs, they are still reactive to explosives in steep terrain.
This problem is a slab overlying the Dec 10 surface hoar/facet layer which is down 60-100 cm. Although this layer is gaining strength, there is still uncertainty with this interface. Evaluate this layer carefully prior to committing to bigger slopes.
Expect this problem to transition to a Wind Slab by Thurs.
Caution shallow trigger locations
40cm storm snow, mod SW winds, and warm temps have formed a storm slab. The bond at the old snow surface is strengthening but it will still be sensitive to human triggering, especially in shallow or wind-affected areas.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">The Dec 9/Nov 21 persistent weak layers are down ~120cm+ and consist of surface hoar, facets, or a sun crust depending on aspect and elevation. Sunday's </span><a href="https://www.facebook.com/pg/ParksMountainSafety/photos/?tab=album&amp;album_id=1997141533669159" target="_blank"><span class="s_9255B882">Bruins Ridge avalanche</span></a><span class="s_AA239A9B"> was triggered on this layer in a shallow, wind-swept area.
A stiff slab overlying a weak lower snowpack comprised of facets and depth hoar can be found in most areas of the region (generally central and eastern) where a shallow snowpack exists. Give this weak snowpack some time to adjust to the storm load.
Strong SW winds blew mid-storm on Dec. 29th creating touchy new slabs. While the cold temperatures that have followed have diminished the sensitivity of these slabs, they are still reactive with explosives in steep terrain.
Strong SW winds blew mid-storm on Dec. 29th creating touchy new slabs. While the cold temperatures have diminished the sensitivity of these slabs, they are still reactive to explosives in steep terrain.
This problem is a slab overlying the Dec 10 surface hoar/facet layer which is down 60-100 cm. Although this layer is gaining strength, there is still uncertainty with this interface. Evaluate this layer carefully prior to committing to bigger slopes.
The recent snow came with strong winds at all elevations, wind effect is visible in all open terrain.
Be particularly cautious in steep areas with shallow snowpack, were the new snow is sitting on unconsolidated facets and depth hoar.
The new snow has added to the load on the Dec 11th weak interface. Buried more than a meter deep in some locations, this layer is strengthening but has been reactive to large triggers such as cornices recently.
A new storm slab will develop over the day with the incoming storm and bury old wind/storm slab. 40cm of settled storm snow has been redistributed by moderate southerly winds and formed pockets of wind slab at ridge line and cross loaded features.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">The Dec 9/Nov 21 persistent weak layers are down ~120cm+ and consist of surface hoar, facets, or a sun crust depending on aspect and elevation. Sunday's </span><a href="https://www.facebook.com/pg/ParksMountainSafety/photos/?tab=album&amp;album_id=1997141533669159" target="_blank"><span class="s_9255B882">Bruins Ridge avalanche</span></a><span class="s_AA239A9B"> was triggered on this layer in a shallow, wind-swept area.
Forecasts are calling for ~25 cm's by the morning and up to 50 cm's by Thursday evening. This will certainly form a touchy slab. Any avalanches initiated here are likely to step down to the deeper Dec. 10th layer.
The 60-100 cm slab overlying the Dec. 10th layer of facets and surface hoar will become overloaded with the forecasted 30-50 cm of snow on Thursday. Any avalanche that initiates is highly likely to step down to this layer.
25-50 cm of new snow on Thursday will sluff easily and is very likely to initiate a larger avalanche on the Persistent slab layer
Forecasts are calling for ~25 cm's by the morning and up to 50 cm's by Thursday evening. This will certainly form a touchy slab. Any avalanches initiated here are likely to step down to the deeper Dec. 10th layer.
The 60-100 cm slab overlying the Dec. 10th layer of facets and surface hoar will become overloaded with the forecasted 30-50 cm of snow on Thursday. Any avalanche that initiates is highly likely to step down to this layer.
25-50 cm of new snow on Thursday will sluff easily and is very likely to initiate a larger avalanche on the Persistent slab layer
Fresh snow and strong to extreme SW winds at all elevations, expect wind effect in all open terrain.
The new snow has added to the load on the Dec 11th weak interface. Buried more than a meter deep in some locations, this layer is strengthening but has been reactive in shallow snowpack areas recently.
The base of the snowpack is weak and facetted. In shallow snowpack areas the new snow will likely overload this weakness.
Rapid loading has created storm slabs at all elevations and aspects. Avalanches will run to and may cross valley bottom. Natural and human triggered avalanches will be very likely to almost certain as the cycle will peak today.
Loose dry avalanches are very likely today with the current rapid loading. Even small terrain features could sluff and be dangerous in the wrong place. Tree wells and deep snow immersion are also real hazards today!
Storm slabs may step down to the persistent weak layers today. The Dec 9/Nov 21 are down 1.5-2m and consist of surface hoar, facets, or a sun crust depending on aspect and elevation.
Another 30 cm is forecasted for Emerald adding to the 35 cm already received. This will certainly form a touchy slab. Any avalanches initiated here are likely to step down to the deeper Dec. 10th layer.
The Dec. 10th layer of facets and surface hoar down 80-160 cm continues to be rapidly loaded by an ongoing intense storm. Any avalanche that initiates almost certainly to step down to this layer and run well into the run outs below treeline.
Loose snow avalanches are occurring and is very likely to initiate a larger avalanche on the Persistent slab layer described above.
Another 30 cm is forecasted for Emerald adding to the 35 cm already received. This will certainly form a touchy slab. Any avalanches initiated here are likely to step down to the deeper Dec. 10th layer.
The Dec. 10th layer of facets and surface hoar down 80-160 cm continues to be rapidly loaded by an ongoing intense storm. Any avalanche that initiates almost certainly to step down to this layer and run well into the run outs below treeline.
Loose snow avalanches are occurring and are very likely to initiate large avalanches on the persistent weak layer described above.
Up to 45cm of fresh snow, warm temperatures and moderate to strong SW winds are creating widespread touchy windslabs and storm slabs.
The new snow has added to the load on the Dec 11th weak interface. Buried more than a meter deep in some locations, this layer is strengthening but has been reactive in shallow snowpack areas recently.
The base of the snowpack is weak and facetted. In shallow snowpack areas the new snow will likely overload this weakness.
Rapid loading and strong winds have created storm slabs at all elevations and aspects. Avalanches can run well into the valley bottom. Natural and human triggered avalanches will be very likely to almost certain as the winds pick up this morning.
Up to 70 cm of storm snow has formed a touchy storm slab at all elevations. Numerous slopes &amp; cutbanks below treeline have avalanched wall to wall or remain poised for human triggering.
The Dec. 10th layer of facets &amp; surface hoar down 100-150 cm has been overloaded by recent storm snow. The snow pack needs time to adjust, be very conservative with route choices this weekend and avoid overhead exposure.
With winds tapering tomorrow, there should be fewer loose dry avalanches, but they will still be a concern given the amount of snow we have received. Any increase in wind could trigger loose dry avalanches which in turn can trigger deeper avalanches.
Up to 70 cm of storm snow has formed a touchy storm slab at all elevations.  Numerous slopes &amp; cutbanks below treeline have avalanched wall to wall or remain poised for human triggering. 
The Dec. 10th layer of facets &amp; surface hoar down 100-200 cm has been overloaded by recent storm snow. The snow pack needs time to adjust, be very conservative with route choices this weekend and avoid overhead exposure.
With winds tapering tomorrow, there should be fewer loose dry avalanches, but they will still be a concern given the amount of snow we have received. Any increase in wind could trigger loose dry avalanches which in turn can trigger deeper avalanches.
Up to 45cm of fresh snow, warm temperatures and moderate to strong SW winds are creating widespread touchy windslabs and storm slabs.
The new snow has added to the load on the Dec 11th weak interface. Buried more than a meter deep in some locations, this layer is strengthening but has been reactive in shallow snowpack areas recently.
The base of the snowpack is weak and facetted. In shallow snowpack areas the new snow will likely overload this weakness.
Rapid loading and strong winds have created storm slabs. Slabs will be most developed near ridgelines and on lee features where wind loading has occurred. These slabs could certainly be triggered by human loads.
The sun is expected to come out today and it may have enough strength to cause loose snow avalanches on steep solar aspects. With current conditions, these small sluffs may be enough to trigger larger storm snow avalanches.
There is the very real potential of a slab initiating on the weak basal layers (Oct. 30 layer), or a storm slab &quot;stepping down&quot; to cause a large avalanche. This problem will be around for some time.
Lots of  recent snow load will require some time to stabilize. These storm slabs exist in many areas and should be treated with caution in avalanche terrain, but should only be a problem in the short term.&nbsp;
The Dec. 10th layer of facets &amp; surface hoar down is now down 100- 150cm The snow pack needs time to adjust, be very conservative with route choices this weekend and avoid overhead exposure.
Up to 70 cm of storm snow has formed storm slabs at all elevations. These will likely be a problem only in the short term, but should be treated with caution. Many of these have also been failing at lower elevations in Little Yoho.
Up to 45cm of fresh snow, warm temperatures and moderate to strong SW winds are creating widespread touchy windslabs and storm slabs.
Storm slab will become more dangerous and reactive as the whole snowpack settles into a stiffer slab.
The new snow has added to the load on the Dec 11th weak interface. Buried more than a meter deep in some locations, this layer is strengthening but has been reactive in shallow snowpack areas recently.
Rapid loading and strong winds have created storm slabs. Slabs will be most developed near ridgelines and on lee features where wind loading has occurred. These slabs may be triggered by human loads.
Strong winds, warm temps, and over a 100cm of snow in the last week has allowed cornices along ridge-tops to grow. Minimize time underneath these hulking beasts, and give them a wide berth if you are traveling along a ridgecrest.
Up to 45cm of new snow from Jan 2-4th, warm temperatures and moderate to strong SW winds created windslabs.
The new snow has added to the load on the Dec 11th interface. It is buried more than a meter deep in some locations. This layer is strengthening but was active during the storm in shallow snowpack areas.
The base of the snowpack is weak and facetted. In shallow snowpack areas the new snow in combination with a skier has the potential to overload this weakness.
There is the very real potential of a slab initiating on the weak basal layers (Oct. 30 layer), or a storm slab &quot;stepping down&quot; to cause a large avalanche. This problem will be around for some time.
Lots of recent snow load will require some time to stabilize. These storm slabs exist in many areas and should be treated with caution in avalanche terrain, but should only be a problem in the short term. Expect it to last for a couple more days.
The Dec. 10th layer of facets &amp; surface hoar down is now down 100- 150cm The snow pack needs time to adjust, be very conservative with route choices for a while yet.
Up to 70 cm of storm snow has formed storm slabs at all elevations. These will likely be a problem only in the short term, but should be treated with caution. Many of these have also been failing at lower elevations in Little Yoho.
Moderate SW winds are moving around last week's storm snow and forming soft slabs in lee and cross-loaded features. We have limited alpine observations, so they may be more widespread than just lee features.
Strong winds, warm temps, and over a 100cm of snow in the last week has allowed cornices along ridge-tops to grow. Minimize time underneath these hulking beasts, and give them a wide berth if you are traveling along a ridgecrest.
More avalanche control work today proved that this layer is still touchy. Most avalanches scrubbed down to the October 26th facet crust or the ground. This layer needs time to adjust to the load and this problem will be around for some time.
These storm slabs exist in many areas and should be treated with caution in avalanche terrain, but should only be a problem in the short term. Expect it to last for a couple more days. If you trigger this layer, watch for the step down avalanche
New windslabs will be building as winds and snowfall increase on Wednesday.
There has not been much recent activity on the facets deep in the snowpack, but there is still the possibility to trigger them in shallow areas.
More avalanche control work today proved that this layer is still touchy. Most avalanches scrubbed down to the October 26th facet crust or the ground. This layer needs time to adjust to the load and this problem will be around for some time.
These storm slabs exist in many areas and should be treated with caution in avalanche terrain, but should only be a problem in the short term. Expect it to last for a couple more days. If you trigger this layer, watch for the step down avalanche
The base of the snowpack is weak and facetted in shallow areas and will likely be for some time. The new snow in combination with a skier has the potential to overload this weakness.
Moderate to strong SW winds building fresh windslabs.
The Dec. 11th layer of facets, surface hoar is buried more than a meter deep. This layer is strengthening but was active during the recent storm.
Moderate SW winds from the past several days formed a soft slab in lee and cross-loaded features. Tests showed this slab being stubborn to react, especially with the cold temps. They may be easier to initiate on convex rolls or steep S aspects.
Avalanche control work on Monday proved that this layer is still touchy. Most avalanches scrubbed down to the October 26th facet crust or the ground. This layer needs time to adjust to the load and this problem will be around for some time.
Avalanche control work on Monday proved that this layer is still touchy. Most avalanches scrubbed down to the October 26th facet crust or the ground. This layer needs time to adjust to the load and this problem will be around for some time.
The base of the snowpack is weak and facetted in shallow areas and will likely be for some time. The new snow in combination with a skier has the potential to overload this weakness.
Moderate SW winds and warming temps continue to add to the windslab problem.
The Dec. 11th layer of facets and surface hoar is buried more than a meter deep. This layer is strengthening but was active during the recent storm.
Continued moderate winds formed winds slabs in the alpine and exposed ares at tree line. Winds were out of the NE, reverse loading ridge tops where you may not expect to find regular wind slabs.
The November 21st interface may be the culprit for the skier accidental size 3.5 yesterday in Camp West. This problem woke up with the recent rapid loading from extreme winds, and significant new snow in January.
The Oct. 26 layer is still very active. Some large natural avalanches are still occurring and human triggering is likely. This layer needs time to adjust to the load and this problem will be around for some time.
Moderate - strong W winds and warming temps continue to add to the wind slab problem.
The base of the snowpack is weak and facetted in shallow areas and will likely be for some time. The new snow in combination with a skier has the potential to overload this weakness.
The Dec. 11th layer of facets and surface hoar is buried more than a meter deep. This layer is strengthening but was active during the recent storm.
The Dec.10 layer of facets and some surface hoar are down 150+cm at treeline. There have been few observations from this deeper snowpack region as to the sensitivity of this layer, but recent avalanche control has seen deep propagations.
Continued snowfall, combined with mild temps, will have created soft storm slabs in many areas. In the region, storm slabs have been reactive and easily triggered by skiers. Be especially cautious in alpine areas, where it has buried windslabs.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">The </span><a href="https://www.avalanche.ca/mountain-information-network/submissions/22f20069-b6cb-40b2-a84c-ff5998c30850" target="_blank"><span class="s_9255B882">recent size 3.5 skier triggered avalanche</span></a><span class="s_AA239A9B"> highlights that in some areas persistent slabs may be reactive. The problem likely woke up with rapid wind loading and significant new snow in January, and was triggerable where the snowpack was shallow.
The Oct. 26 layer is still very active. Some large natural avalanches are still occurring and human triggering is likely. This layer needs time to adjust to the load and this problem will be around for some time.
Moderate - strong W winds, snow available for transport, and warming temps continue to add to the wind slab problem.
The base of the snowpack is weak and facetted in shallow areas and will likely be for some time. The Jan 2-4th 85cm of new snow in combination with a skier has the potential to overload this weakness.
The Dec. 11th layer of facets and surface hoar is buried more than a meter deep. This layer is strengthening but was active during the recent storm.
The Dec.10 layer of facets and some surface hoar are down 150+cm at treeline. There have been few observations from this deeper snowpack region as to the sensitivity of this layer, but recent avalanche control has seen deep propagations.
There has not been much recent activity on the facets deep in the snowpack, but there is still the possibility to trigger them in shallow areas.
Recent snowfall combined with mild temps, has created soft storm slabs in many areas. Storm slabs have been reactive and easily triggered by skiers. Be especially cautious in alpine areas, where it has buried windslabs.
The recent size 3.5 skier triggered aval in Camp West path highlights that in some areas persistent slabs may be reactive. The problem likely woke up with rapid wind loading and significant new snow in January and was triggerable in a shallow area.
Moderate - strong SW winds, and significant amounts of snow available for transport. Avoid lingering in run-outs where active loading is happening and/or where there is no evidence of recent previous activity
The new snow seems to be bonding well to the old snow interface. In deeper snowpack areas, this deep weakness may be bridged by a sturdy new mid-pack. Build trust slowly in the new snowpack before committing to any large rideable slope.
The  facets and depth hoar 40 cm above the ground inspire little confidence. Some large natural avalanches are still occurring and human triggering is likely. This layer needs time to adjust to the load and this problem will be around for some time.
Moderate to strong SW winds have moved a significant amount of snow over the last three days. Expect widespread wind effect in the alpine and get your guard up as you enter open areas at treeline.
Moderate to strong SW winds have moved a significant amount of snow over the last three days. Expect widespread wind effect in the alpine and get your guard up as you enter open areas at treeline.
The Dec.10 layer of facets and some surface hoar are down 130+cm at treeline in the fatter snowpack areas more typical in this region. The sensitivity of this layer seems more concerning at lower elevations but few observations have been made so far
Recent snowfall combined with winds and mild temps has create storm slabs. Warm temperatures will increase slab properties and destabilize the surface snow, thereby increasing the likelihood of triggering this widespread problem.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">A recent size </span><a href="https://www.avalanche.ca/mountain-information-network/submissions/22f20069-b6cb-40b2-a84c-ff5998c30850" target="_blank"><span class="s_9255B882">3.5 skier triggered avalanche</span></a><span class="s_AA239A9B"> in Camp West path ran on this layer. The likelihood of triggering deeper layers increases with warming air temperatures. Cornices, which are also temperature sensitive, can certainly trigger this problem.
Strong SW winds, and significant amounts of snow available for transport have created wind slab in lee features. 
Use caution in shallow snowpack areas where deep weakness might be more reactive to a human load.  Build trust slowly in the new snowpack before committing to any large rideable slope.
Rising freezing levels could result in fresh cornices to fail triggering deep instabilities.
The facets and depth hoar 40 cm above the ground inspire little confidence. Some large natural avalanches are still occurring and human triggering is likely. This layer needs time to adjust to the load and this problem will be around for some time.
These wind slabs are becoming less reactive but should be treated with respect if encountered.  If initiated these slabs could provide enough load to trigger the deeper basal layers.
The Dec.10 layer of facets and some surface hoar are down 130+cm at treeline in the fatter snowpack areas more typical in this region. The sensitivity of this layer seems more concerning at lower elevations but few observations have been made so far
Moderate to strong SW winds have moved a significant amount of snow over the last three days. Expect widespread wind effect in the alpine and get your guard up as you enter open areas at treeline.
Use caution in shallow snowpack areas where deep weakness might be more reactive to a human load. Build trust slowly in the new snowpack before committing to any large rideable slope.
Strong SW winds, and significant amounts of snow available for transport have created wind slab in lee features.
Recent SW winds have added to existing cornices, this combined with strong diurnal temperature fluctuations could cause cornices to fail and trigger deep instabilities.
The facets and depth hoar 40 cm above the ground inspire little confidence. Some large natural avalanches are still occurring and human triggering is likely. This layer needs time to adjust to the load and this problem will be around for some time.
These wind slabs are becoming less reactive but should be treated with respect if encountered. If initiated these slabs could provide enough load to trigger the deeper basal layers.
The Dec.10 layer of facets and some surface hoar are down 130+cm at treeline in the fatter snowpack areas more typical in this region. The sensitivity of this layer seems more concerning at lower elevations but few observations have been made so far
Moderate to strong SW winds have moved a significant amount of snow over the last three days. Expect widespread wind effect in the alpine and get your guard up as you enter open areas at treeline.
Warm temps and strong sunshine on steep solar aspects will cause natural avalanches at the warmest part of the day.
Surface slabs exist at all elevations and aspects, but may be more likely to trigger on solar aspects with the warm temp's and intense sunshine.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">A recent size </span><a href="https://www.avalanche.ca/mountain-information-network/submissions/22f20069-b6cb-40b2-a84c-ff5998c30850" target="_blank"><span class="s_9255B882">3.5 skier triggered avalanche</span></a><span class="s_AA239A9B"> in Camp West path ran on this layer. The likelihood of triggering deeper layers increases with warming air temperatures. Cornices, which are also temperature sensitive, can certainly trigger this problem.
This problem will only exist in solar facing terrain from early afternoon until sundown. Moist releases and sluffing from cliffs when combined, through entrainment, may have sufficient mass to trigger the deep persistent slab.
Use caution in shallow snowpack areas where deep weakness might be more reactive to a human load. Build trust slowly in the new snowpack before committing to any large rideable slope.
The wind slabs appear to bonding well to the lower snowpack. Last weeks snow continues to settle and there is only minimal snow transport taking place near ridge line in the alpine.
The weak facets and depth hoar  just  above the ground have an significant slab sitting above them . It is difficult to travel with any confidence given this structure. Some large natural avalanches are still occurring and human triggering is likely.
These wind slabs are becoming older and are likely less reactive but should be treated with respect especially while the warm conditions continue. If initiated these slabs could provide enough load to trigger the deeper basal layers.
In deeper snowpack locations the Dec 10 layer is a thin, separated, layer of facets about 120cm deep which is becoming less of a problem. In thinner areas however, a thick layer of facets sits just below the Dec 10 layer which is about 80cm deep.
South and West winds built these slabs over the last week. While these slabs are becoming old, they are still worthy of respect, especially while the warm conditions continue.
The previous warm, sunny days likely have cooked solar aspects, but we may still see loose, moist avalanches running during the warmest part of the day. Steep S/SW aspects are the most suspect for triggering.
Surface slabs exist at all elevations and aspects, but may be more likely to trigger on solar aspects with the warm temp's and intense sunshine.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">A recent size </span><a href="https://www.avalanche.ca/mountain-information-network/submissions/22f20069-b6cb-40b2-a84c-ff5998c30850" target="_blank"><span class="s_9255B882">3.5 skier triggered avalanche</span></a><span class="s_AA239A9B"> in Camp West path ran on this layer. The likelihood of triggering deeper layers increases with warming air temperatures. Cornices, which are also temperature sensitive, can certainly trigger this problem.
The weak facets and depth hoar just above the ground have an significant 50-140cm thick slab sitting above them. This slab has been hardened by wind effect TL and above. Some large natural avalanches are still occurring and human triggering is likely
These wind slabs are becoming older and are likely less reactive but should be treated with respect especially while the warm conditions continue. If initiated these slabs could provide enough load to trigger the deeper basal layers.
Use caution in shallow snowpack areas where deep weakness might be more reactive to a human load. Build trust slowly in the snowpack before committing to any large rideable slope.
This problem will only exist in solar facing terrain from early afternoon until sundown.
Recently formed wind slabs appear to bonding well to the snowpack below.
In deeper snowpack locations the Dec 10 layer is a thin, separated, layer of facets about 120cm deep which is becoming less of a problem. In thinner areas however, Dec 10 is only about 80cm deep and has a thick, weak, facet layer siting just below.
South and West winds built these slabs over the last week. While these slabs are becoming old, they are still worthy of respect, especially while the warm conditions continue.
Recent snowfall combined with winds and mild temps has create storm slabs. Warm temperatures will increase slab properties and destabilize the surface snow, thereby increasing the likelihood of triggering this widespread problem.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">A recent size </span><a href="https://www.avalanche.ca/mountain-information-network/submissions/22f20069-b6cb-40b2-a84c-ff5998c30850" target="_blank"><span class="s_9255B882">3.5 skier triggered avalanche</span></a><span class="s_AA239A9B"> in Camp West path ran on this layer. The likelihood of triggering deeper layers increases with warming air temperatures. Cornices, which are also temperature sensitive, can certainly trigger this problem.
The likelihood of triggering this layer is low but the consequences are high, as the result would be a large destructive avalanche. Watch for thin areas or convexities in the snowpack where human triggering is possible.
The weak facets and depth hoar just above the ground have an significant 50-140cm thick slab sitting above them. This slab has been hardened by wind effect TL and above. Activity is tapering, but human triggering is still possible and consequential.
In deeper snowpack locations the Dec 10 layer is a thin, separated, layer of facets about 120cm deep which is becoming less of a problem. In thinner areas however, Dec 10 is only about 80cm deep and has a thick, weak, facet layer siting just below.
Use caution in shallow snowpack areas where deep weakness might be more reactive to a human load. Build trust slowly in the snowpack before committing to any large rideable slope.
Recently formed wind slabs appear to bonding well to the snowpack below.
Wind slabs are present on lee features in the alpine and exposed areas that have been subjected to downflow winds. These slabs tend to make for challenging skiing conditions. It is possible to trigger these slabs in steep, unsupported terrain.
Regardless of snowfall amounts, Wind Slabs will continue to build over a crust / surface hoar&nbsp; layer during the forecast period.
This layer likely requires a large trigger. New wind slabs may step down causing large avalanches.
The weak facets and depth hoar just above the ground have an significant 50-140cm thick slab sitting above them. This slab has been hardened by wind effect TL and above. Activity is tapering, but human triggering is still possible and consequential.
Use caution in shallow snowpack areas where deep weakness would be more reactive to a human trigger. An avalanche of this nature would be large with severe consequences.
Recently formed wind slabs appear to bonding well to the snowpack below. Light winds and strong diurnal swings have reduced the reactivity of this problem yet it will exist on locations where wind has either pressed or loaded the slope.
The weak facets and depth hoar just above the ground have an significant 100-140cm thick slab sitting above them. This slab has been hardened by wind effect TL and above. Activity is tapering, but human triggering is still possible and consequential.
Wind slabs are now concealed by 10cm of new snow, but are present on lee features and exposed areas in the alpine. These slabs tend to make for challenging skiing conditions. It is possible to trigger these slabs in steep, unsupported terrain.
The weak facets and depth hoar just above the ground have an significant 50-140cm thick slab sitting above them. This slab has been hardened by wind effect TL and above. Activity is tapering, but human triggering is still possible and consequential.
The weak facets and depth hoar just above the ground have an significant 100-140cm thick slab sitting above them. This slab has been hardened by wind effect TL and above. Activity is tapering, but human triggering is still possible and consequential.
The new snow will increase the reactivity of this deeply buried problem.&nbsp; An avalanche of this nature would be large with severe consequences.
The incoming new snow and strong SW winds will produce windslabs at all elevations. Beneath the slab is a widespread surface hoar layer on most aspect from treeline to the valley bottom. Also near treeline on southerly slopes is a buried sun crust.
Incoming storm snow will load on top of a widespread Jan 17th surface hoar layer. The bond to the old snow surface is suspect at all elevations. Warming temperatures may make the surface slab more sensitive to human triggering.
Surface sloughing of storm snow can be expected in steeper terrain. This may pose a hazard in terrain  trap features such as gulleys.
The weak facets and depth hoar just above the ground have an significant 50-140cm thick slab sitting above them. This slab has been hardened by wind effect TL and above. Activity is tapering, but human triggering is still possible and consequential.
As of publication, we are close to threshold values for windslab. We need a little more input for this to become more widespread.
The weak facets and depth hoar just above the ground have an significant 100-140cm thick slab sitting above them. This slab has been hardened by wind effect TL and above. Activity is tapering, but human triggering is still possible and consequential.
Moderate winds over the day and night Saturday will create new windslab over a mix of surface conditions (facets, surface hoar, crust). Expect these to be reactive with extra caution to areas where surface hoar may be preserved.
Use caution in shallow snowpack areas where deep weakness would be more reactive to a human trigger. An avalanche of this nature would be large with severe consequences.
A storm slab sits on top of the January 17th surface hoar layer and old windslab depending on location. TL field trips yesterday found it to be very soft. Wind effected areas at higher elevation are expected to be more sensitive with a denser slab.
Moderate winds over the weekend have created isolated new windslab over a mix of surface conditions (facets, surface hoar, crust).
Use caution in shallow snowpack areas where deep weakness would be more reactive to a human trigger. An avalanche of this nature would be large with severe consequences.
Weak facets and depth hoar are found just above the ground have an significant 50-140cm thick slab sitting above them. While natural  activity has dropped off,  human triggering is still possible. Be very cautious with thin snowpack areas . 
Southwest winds in the moderate to strong range Saturday created thin, soft slabs in the alpine 10 to 20cm deep.
Weak facets and depth hoar found just above the ground  have an significant 50-140cm thick slab sitting above them. While natural activity has dropped off, human triggering is still possible. Be very cautious with thin snowpack areas .
Southwest winds in the moderate to strong range Saturday created thin, soft slabs in the alpine 10 to 20cm deep.
Over the weekend we received 20cm of new snow accompanied by extreme winds forming wind slabs in specific locations throughout the park. This overlies the Jan 17th SH layer in sheltered areas and old unreactive wind slabs in exposed terrain.
Weak facets and depth hoar are present at the base of the snowpack in thin snowpack areas, and have a significant slab sitting above them. While natural avalanche activity has decreased, human triggering of this layer is still possible in these areas
Southwest winds in the moderate to strong range on Saturday created thin, soft wind slabs in the alpine 10 to 20 cm deep. Use caution in lee areas.
Weak facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. While natural avalanche activity has decreased, human triggering of this layer is still possible, especially in thin snowpack areas.
Southwest winds in the moderate to strong range on Saturday created thin, soft wind slabs in the alpine 10 to 20 cm deep. Use caution in lee areas.
Moderate winds over the weekend have created isolated new windslab over a mix of surface conditions (facets, surface hoar, crust).
Use caution in shallow uneven snowpack areas where deep weakness would be more reactive to a human trigger. An avalanche of this nature would be large with severe consequences.
Wind Slabs will continue to build over a crust / surface hoar layer and may propagate farther than expected. Dig down and investigate the bond of new snow before committing to your line.
This layer likely requires a large trigger. Be cautious when transitioning from thick to thin snowpack areas
Over the weekend we received 20cm of new snow accompanied by extreme winds forming wind slabs in isolated locations throughout the park. This soft slab overlies the Jan 17th SH in sheltered areas and old unreactive wind slabs in exposed terrain.
Weak facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. While natural avalanche activity has decreased, human triggering of this layer is still possible, especially in thin snowpack areas.
Southwest winds in the moderate to strong range have created thin, soft wind slabs in the alpine 10 to 20 cm deep. Use caution in lee areas.
Weak facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. While natural avalanche activity has decreased, human triggering of this layer is still possible, especially in thin snowpack areas.
Southwest winds in the moderate to strong range have created thin, soft wind slabs in the alpine 10 to 20 cm deep. Use caution in lee areas.
Moderate to strong winds over the weekend have created new windslabs over a mix of surface conditions (facets, surface hoar, crust).
Use caution in shallow uneven snowpack areas where deep weakness would be more reactive to a human trigger. An avalanche of this nature would be large with severe consequences.
Over the weekend we received 20cm of new snow accompanied by extreme winds forming wind slabs in isolated locations throughout the park. This soft slab overlies the Jan 17th SH in sheltered areas and a suncrust on steep solar aspects.
Southwest through northwest winds have formed thin wind slabs over a crust / surface hoar layer and may propagate farther than expected. Dig down and investigate the bond of new snow before committing to your line.
This layer likely requires a large trigger. Be cautious when transitioning from thick to thin snowpack areas
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but if it does get triggered, the avalanche will be large in size.
Thin wind slabs are stubborn but still show potential for triggering in the alpine.  Increased winds on Thursday may add to their development.  These will not be a long term problem. 
In Little Yoho, areas that have a thin snowpack will have weaker basal facets that can still be triggered.&nbsp; Check locally for snowpack depths as thicker areas do not have the same problem.&nbsp;
Thin wind slabs are still capable of producing smaller avalanches.&nbsp; Strong winds Thursday may add to their development, but should only be a concern for the next few days.
Moderate to strong winds over the weekend have created new windslabs over a mix of surface conditions (facets, surface hoar, crust).
Use caution in shallow uneven snowpack areas where deep weakness would be more reactive to a human trigger. An avalanche of this nature would be large with severe consequences.
The Jan 17th layer is down 20-40cm and consists of surface hoar in sheltered areas and sun crust on steep solar aspects. This layer seems more problematic between 1600-2100m where soft slab exists, human triggered avalanches remain possible.
This layer likely requires a large trigger. Be cautious when transitioning from thick to thin snowpack areas
Westerly winds have formed thin wind slabs over a crust layer.
Moderate to strong winds have created new windslabs over a mix of surface conditions (facets, surface hoar, crust).
Use caution in shallow uneven snowpack areas where deep weakness would be more reactive to a human trigger. An avalanche of this nature would be large with severe consequences.
Some thin wind slabs have been triggered in isolated areas over the last few days which will only be a problem in the short term.&nbsp;
In Little Yoho, areas with a thin snowpack are still a question for forecasters. It is suspected that the deeper facet layers will be more prevalent in these areas . Check locally for snowpack depths as thicker regions do not have the same problem.
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but if it does get triggered, the avalanche will be large in size.
Thin wind slabs are stubborn but still show potential for triggering in the alpine. Increased winds on Thursday may add to their development. These will not be a long term problem.
Strong S winds have created windslabs at treeline and above. These slabs have been easily triggered by skier loads in steep unsupported terrain. When triggered in certain areas, wind slabs may propagate into large avalanches.
The Jan 17th layer is down 20-40cm and consists of surface hoar in sheltered areas and sun crust on steep solar aspects. This layer seems more problematic between 1600-2100m. Where soft slab exists, human triggered avalanches are possible.
Moderate to strong winds have created new windslabs over a mix of surface conditions (facets, surface hoar, crust).
Use caution in shallow uneven snowpack areas where deep weakness would be more reactive to a human trigger. An avalanche of this nature would be large with severe consequences.
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but if it does get triggered, the avalanche will be large in size.
Thin wind slabs are currently stubborn and a bit old. Some are thinly buried near treeline but slabs still show potential for triggering and are more common in the alpine. These will build and may become touchy over the next two days.
Some thin wind slabs have been triggered in isolated areas over the last few days. These slabs are now a bit old and even a bit buried. Watch for windslabs to develop further with the winds and small amounts of precip forecast for Saturday and Sunday
In Little Yoho, areas with a thin snowpack are still a question for forecasters. It is suspected that the deeper facet layers will be more prevalent in these areas . Check locally for snowpack depths as thicker regions do not have the same problem.
Strong S winds continue to load lee aspects and create windslabs at treeline and above. These slabs have been easily triggered by skier loads in steep unsupported terrain. When triggered, wind slabs may propagate into large avalanches.
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but if it does get triggered, the avalanche will be large in size.
Thin wind slabs are currently stubborn and a bit old however with strong winds in the forecast, the potential for these, or cornice features to fail will remain for Sunday.&nbsp;
This layer likely requires a large trigger. Be cautious when transitioning from thick to thin snowpack areas
Westerly winds have formed thin wind slabs over a crust layer.
These slabs are now a bit old and even a bit buried. Nevertheless, with strong to extreme winds in the forecast for Sunday morning, the potential for these, or cornices to fail will be elevated.
In Little Yoho, areas with a thin snowpack with more developed faceting still raise concern. Many of the areas in this region hold a deeper snowpack where this problem is not a concern. Travelers are advised to investigate snow depths with a probe.
Strong winds last week left widely scoured surfaces with pockets of hard windslab. These appear to be stubborn to human triggering. Strong alpine winds expected Sunday maintaining this problem.
Despite lack of natural activity, it would be wise to assess the strength of the interfaces above &amp; below the October 25 crust before entering committing lines. This layer exists in most skiable slopes and would be severe consequences if triggered.
Strong S winds continue to load lee aspects and create windslabs at treeline and above. These slabs have been easily triggered by skier loads in steep unsupported terrain. When triggered, wind slabs may propagate into large avalanches.
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but if it does get triggered, the avalanche will be large in size.
In Little Yoho, areas with a thin snowpack with more developed faceting still raise concern. Many of the areas in this region hold a deeper snowpack where this problem is not a concern. Travelers are advised to investigate snow depths with a probe.
Despite lack of recent natural activity, this layer is widespread, and would have high consequences if triggered. Triggering is most likely in thin areas, with variable snowpack depth. Use terrain choice and safe practices to minimize consequences.
Variable accumulation of fresh snow Sunday with gusty NW winds has created small, reactive storm slabs, particularly where loaded by NW winds, over a variety of surfaces from suncrust, surface hoar and wind pressed areas.
Strong S winds have created variable wind slabs at tree-line and above. The slab varies from soft/skiable to perfect igloo-block building crud. Expect a range of surface conditions if you go up high today.
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but if it does get triggered, the avalanche will be large in size.
New soft wind slabs can likely be located in high elevation lee areas. Forecasters don't expect them to be more than 20cm thick.
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but if it does get triggered, the avalanche will be large in size.
New soft wind slabs can likely be located in high elevation lee areas. Forecasters don't expect them to be more than 20cm thick.
Old Wind Slabs exist in typical lee ares but be on the lookout for reverse loading creating new Wind Slabs on Northerly aspects.
This layer likely requires a large trigger. Be cautious when transitioning from thick to thin snowpack areas
New snow on Sunday arrived with Strong winds (ranging from SW to N) creating windslabs over a variety of surfaces, including suncrust, surface hoar, and wind pressed areas. While natural activity has tapered, human triggering remains possible.
A natural avalanche Monday on this layer shows that only minor changes may wake this generally dormant dragon. Triggering is most likely in thin areas, with variable snowpack depth. Use terrain choice and safe practices to minimize consequences.
Strong to Extreme Southerly over the weekend created variable wind slabs at tree-line and above. The slab varies from soft/skiable to perfect igloo-block building crud. Expect a range of surface conditions if you go up high today.
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but if it does get triggered, the avalanche will be large in size.
Soft wind slabs can likely be located in high elevation lee areas. Forecasters don't expect them to be more than 20cm thick.
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but if it does get triggered, the avalanche will be large in size.
Soft wind slabs can likely be located in high elevation lee areas. Forecasters don't expect them to be more than 20cm thick.
New snow on Sunday arrived with Strong winds (ranging from SW to N) creating windslabs over a variety of surfaces, including suncrust, surface hoar, and wind pressed areas. While natural activity has tapered, human triggering remains possible.
A natural avalanche Monday on this layer shows that only minor changes may wake this generally dormant dragon. Triggering is most likely in thin areas, with variable snowpack depth. Use terrain choice and safe practices to minimize consequences.
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but may still be found in extreme terrain.
A well settled mid-pack sits over top of a deep persistent facet layer (Dec 10 layer). Stability tests show moderate to hard results within this facet layer.
Fresh wind slabs are expected from forecasted snow and winds on Friday.
New snow on Sunday arrived with Strong winds (ranging from SW to N) creating windslabs over a variety of surfaces, including suncrust, surface hoar, and wind pressed areas.
A natural avalanche Monday on this layer shows that only minor changes may wake this generally dormant dragon. Triggering is most likely in thin areas, with variable snowpack depth. Use terrain choice and safe practices to minimize consequences.
New snow may overload the deep persistent weakness. Avoid avalanche terrain.
New snow may overload the deep persistent weakness. Avoid avalanche terrain.
Strong to Extreme Southerly over the weekend created variable wind slabs on specific terrain features in the Alpine and at Tree Line. It's most problematic on South aspects in shallow snowpack areas that are steep, rocky, and unsupported.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Snow is forecasted for the next several days. Expect new snow to bond poorly causing loose avalanches in steep terrain. This problem will transition into a storm slab as snowfall amounts build up over the next 24hrs. Winds will increase snow loading.
35cm of storm snow has created a reactive storm slab problem. Another 35cm of snow is expected to fall by Saturday afternoon with strong winds. Rapid loading will turn these slabs into a widespread touchy problem where natural avalanches are certain.
New windslabs will be forming with the incoming storm on Saturday. As the winds switch from southwest to northeast on Saturday night, be aware of the potential for reverse loading.
A layer of weak facets is lurking at the bottom of the snowpack. Though there has been limited activity on this layer, it is still on our mind with consistent sudden collapse results in test profiles.
The weak Oct.26 facets and depth hoar at the base of the snowpack have a significant slab (50-130cm thick) sitting above them. The likelihood of triggering this layer has decreased, but if it does get triggered, the avalanche will be large in size.
Fresh wind slabs can be expected from forecasted new snow and winds on Friday.
In Little Yoho the mid and lower pack is generally well settled with no significant shears. In some areas where the snowpack is shallower the Dec 10 persistent facet layer is producing shears in the hard range.
We expect 20-50 cm of storm snow by Sunday with moderate-strong SW-SE winds. Storm slabs will form in many areas. Natural avalanches are expected in steep terrain and human triggering will be likely in deeper storm snow areas.
Loose dry avalanches are expected in steep terrain and gullies. Climbers and skiers should avoid overhead hazard until the new snow has a chance to bond.
The new snow load may start waking up the Dec 10th deep persistent facet weakness down 60-140 cm. This is of greatest concern in shallow snowpack areas where the basal facets are weakest.
We expect 20-40 cm of storm snow by Sunday with moderate-strong SW-SE winds. Storm slabs will form in many areas. Natural avalanches are expected in steep terrain and human triggering will be likely in deeper storm snow areas.
Loose dry avalanches will occur in steep alpine terrain until the storm finishes. Ice climbers and skiers should avoid steep gullies and overhead hazard until the new snow has a chance to bond.
In isolated shallow snowpack areas of Little Yoho the new snow load may wake up the Dec 10th deep persistent facet weakness.
75cm of storm snow has created a reactive storm slab problem. Strong S winds are now battering the pass reloading areas that have previously avalanched. Rapid loading has turned these slabs into a touchy problem where natural avalanches are certain.
25-40cm of new snow has fallen under warmer temperatures at all elevations which will be reactive in the short term. The Jan. 17th layer is buried up to 65cm deep and consists of surface hoar, facets or crust and can be found up to 2300m.
The new snow load may start waking up the deep persistent facet weakness down 80-160 cm. This is of greatest concern in shallow snowpack areas where the basal facets are weakest.
Expect storm slabs to be reactive in the short term on many aspects. Especially watch areas where the buried Jan. 17th surface hoar and/or crust layer is present . This has been found below 2200m and where found, was reactive before this last storm.
In isolated shallow snowpack areas of Little Yoho the new snow load may wake up the deep persistent facet weakness.
Avoid avalanche terrain until the storm subsides and the snowpack can settle.
New snow may overload the deep persistent weakness. Avoid avalanche terrain.
70cm of storm snow has created a reactive storm slab problem. Strong S winds have now shifted to moderate NE wind reverse loading exposed areas. Expect the storm slab to be more reactive in wind effected areas.
Wind was observed redistributing the recent storm snow in the alpine and creating fresh windslabs in lee areas. These slabs could be up to 70cm deep. For clarity, the storm slab problem has transitioned into the windslab problem.
The new snow load may start waking up the deep persistent facet weakness down 80-160 cm. This is of greatest concern in shallow snowpack areas where the basal facets are weakest.
Wind was observed redistributing the recent storm snow in the alpine and creating fresh windslabs in lee areas. These slabs could be up to 70cm deep. For clarity, the storm slab problem has transitioned into the windslab problem.
Up to 50cm of recent snow followed by strong winds have redistributed the snow into thick slabs well into the terrain.
New snow with strong winds may overload the deep persistent weakness.
New low density snow sluffing out of very steep rocky terrain. 
70cm of storm snow, plus strong to extreme Southerly winds created wind and storm slabs over the weekend. On Sunday Strong NE winds relocated our storm snow again into wind slabs on specific terrain features at all aspects and elevations.
Windslabs have formed with recent new snow and NE winds, and may take longer than usual to bond with cold temperatures.
A layer of weak facets is lurking at the bottom of the snowpack. Though there has been limited activity on this layer, it is still on our mind with consistent sudden collapse results in test profiles.
Recent winds have redistributing the storm snow in the alpine and created fresh windslabs in lee areas. These slabs could be up to 70cm deep.
The new snow load may start waking up the deep persistent facet weakness down 80-160 cm. This is of greatest concern in shallow snowpack areas where the basal facets are weakest.
Recent winds were observed redistributing the new storm snow in the alpine, creating fresh windslabs in lee areas. These slabs could be up to 70cm deep.
Up to 50cm of recent snow followed by strong winds has built thick slabs well into the terrain.
New snow with strong winds recently overloaded the deep persistent weakness.
Expect sluffing out of steep rocky terrain when the sun is on it.
70cm of storm snow, plus strong to extreme Southerly winds created wind and storm slabs over the weekend. On Sunday Strong NE winds relocated our storm snow again into wind slabs on specific terrain features at all aspects.
Wide spread wind effect from this weekend has left windslabs on NE to SE aspects. These slabs could be up to 70cm deep.
Up to 50cm of recent snow followed by strong winds has built thick slabs well into the terrain.
New snow with strong winds recently overloaded the deep persistent weakness in shallow snowpack areas.
Expect sluffing out of steep rocky terrain if the sun is on it.
Wide spread wind effect from this weekend has left windslabs on NE to SE aspects. These slabs could be up to 70cm deep.
70cm of storm snow, plus strong variable winds created wind slabs over the weekend. Skiers are find this problem most reactive along ridge crest and cross loaded terrain features.
Up to 50cm of recent snow followed by strong winds has built thick slabs.&nbsp;
New snow with strong winds recently overloaded the deep persistent weakness in shallow snowpack areas.
Expect sluffing out of steep rocky terrain if the sun is on it.
This problem is not widespread but we are still seeing activity today in the Sunshine region, and reports from Highway 93S. Forecasters have limited observations from alpine areas.
Some areas have still reported active wind slabs formed last weekend.  These are decreasing in likelihood.
Last weekends storm snow and strong variable winds created wind slabs in the alpine and exposed areas at tree line. Skiers are find this problem most reactive along ridge crest and cross loaded terrain features.
Expect sluffing out of steep rocky terrain if the sun is on it.
Up to 50cm of recent snow followed by strong winds has built thick slabs.
New snow with strong winds recently overloaded the deep persistent weakness in shallow snowpack areas.
Windslabs have formed with recent SW winds. Expect reverse loading as the wind swings NE Friday Morning
A layer of weak facets is lurking at the bottom of the snowpack. Though there has been limited activity on this layer, it is still on our mind with consistent sudden collapse results in test profiles.
Last weekend's storm snow and strong variable winds created wind slabs in the alpine and exposed areas at tree line. This problem is most reactive along ridge crest and cross loaded terrain features.
Expect sluffing out of steep rocky terrain
Just a reminder, this is still there and can still be triggered from shallow snowpack areas. See avalanche activity summary.
Strong to extreme NE winds have redistributed storm snow into hard wind slabs and loaded pockets on lee features. On southerly aspects, wind slabs are poorly bonded to a buried crust. These slabs can create large avalanches with wide propagations.
Expect sluffing out of steep rocky terrain. Cold temperatures continue to loosen the surface snow to the point where it looses structure and avalanches as a point release. They can pick up enough mass to be a concern.
Just a reminder, this is still present and can still be triggered from shallow snowpack areas. See avalanche activity summary.
Strong to extreme N through E winds have redistributed storm snow into hard wind slabs and loaded pockets on lee features. On southerly aspects, wind slabs are poorly bonded to a buried crust. These slabs are sensitive to human triggering.
Expect sluffing out of steep rocky terrain. Cold temperatures will loosen the surface snow to the point where it loses structure and avalanches as a point release. They can pick up enough mass to be a concern.
Just a reminder, this is still present and can still be triggered from shallow snowpack areas. See avalanche activity summary.
Strong to extreme NE winds have redistributed storm snow into hard wind slabs and loaded pockets on lee features. On southerly aspects, wind slabs are poorly bonded to a buried crust. These slabs are sensitive to human triggering.
Cold temperatures continue to weaken the surface snow.  Expect sluffing out of steep rocky terrain.
This is still present and could still be triggered from shallow snowpack areas. See MIN report.
Old wind effect and isolated pockets of newly formed windslab can be found in the alpine. With small inputs of snow and wind on Tuesday, this problem may continue to develop.
Old wind effect and isolated pockets of newly formed windslab can be found in the alpine. With small inputs of snow and wind on Tuesday, this problem may continue to develop.
Ski quality is best in sheltered trees.
A layer of weak facets is lurking at the bottom of the snowpack. Though there has been limited activity on this layer, it is still on our mind with consistent sudden collapse results in test profiles.
Recent strong to extreme NE winds have redistributed storm snow into hard wind slabs and loaded pockets on lee features. On southerly aspects, wind slabs are poorly bonded to a buried crust. These slabs are sensitive to human triggering.
Old wind effect and isolated pockets of newly formed wind slab can be found in the alpine. Expect to find this problem most prevalent in immediate lee features off ridge crest.
Consistent cold temperatures have faceted the upper snowpack. In steep alpine features loose surface snow can easily entrain mass causing small avalanches. Thin steep rocky terrain is the prime candidate for this problem.
Cold temperatures continue to weaken the surface snow. Expect sluffing out of steep rocky terrain.
This problem is still present and could be triggered from shallow snowpack areas. See MIN report.
Old wind effect and isolated pockets of newly formed wind slab can be found in the alpine. Expect to find this problem most prevalent in immediate lee features off ridge crest.
Consistent cold temperatures have faceted the upper snowpack. In steep alpine features loose surface snow can easily entrain mass causing small avalanches. Thin steep rocky terrain is the prime candidate for this problem.
Recent strong to extreme NE winds have redistributed storm snow into hard wind slabs and loaded pockets on lee features. On southerly aspects, wind slabs are poorly bonded to a buried crust.
Wind effect in the alpine and tree line. In the right spot you could trigger a windslab.
This problem is still present and could be triggered from shallow snowpack areas. See MIN report.
Storm snow is reactive to human traffic. More specific will information available in tomorrow's forecast
Use caution in steep, sheltered terrain
A layer of weak facets is lurking at the bottom of the snowpack.&nbsp; This new snow may be enough to affect this basal weakness in shallow snowpack areas.
We expect the odd windslab to rear its head in steep, alpine terrain. Pay particular attention to this if you are in any terrain with consequence below you such as cliffs or other terrain traps.
Consistent cold temperatures have faceted the upper snowpack. In steep alpine features loose surface snow can easily entrain mass causing small avalanches. Thin steep rocky terrain is the prime candidate for this problem.
We expect the odd windslab to rear its head in steep, alpine terrain. Pay particular attention to this if you are in any terrain with consequence below you such as cliffs or other terrain traps.
Consistent cold temperatures have faceted the upper snowpack. In steep alpine features loose surface snow can easily entrain mass causing small avalanches. Thin steep rocky terrain is the prime candidate for this problem.
Saturday's wind event ravaged the upper snowpack in the Alpine and exposed areas of Tree Line; leaving behind a variety of surface conditions varying from Pencil resistance hard slabs to soft near surface facetting.
This problem could be triggered from shallow snowpack areas.
Somewhat of a warm up over the next few days from the previous frigid temperatures could generate some cornice failures
We expect the odd windslab to rear its head in steep, alpine terrain. Pay particular attention to this if you are in any terrain with consequence below you such as cliffs or other terrain traps.
Consistent cold temperatures have faceted the upper snowpack. In steep alpine features loose surface snow can easily entrain mass causing small avalanches. Thin steep rocky terrain is the prime candidate for this problem.
We expect the odd windslab to rear its head in steep, alpine terrain. Pay particular attention to this if you are in any terrain with consequence below you such as cliffs or other terrain traps.
Consistent cold temperatures have faceted the upper snowpack. In steep alpine features loose surface snow can easily entrain mass causing small avalanches. Thin steep rocky terrain is the prime candidate for this problem.
Moderate Compression Test Results today on Forum Ridge at the Storm snow interface. 15-30cm of snow over the weekend will continue to build storm slabs.
Use caution in steep, sheltered terrain.
A layer of weak facets is lurking at the bottom of the snowpack. This new snow may be enough to affect this basal weakness in shallow snowpack areas.
Ongoing moderate winds have created widespread wind affect in the Alpine and exposed areas at Tree Line, making for challenging travel. Windslabs vary from supportive hard slabs to pockets of wind-loaded facets.
Moderate Compression Test Results today on Forum Ridge at the Storm snow interface. 15-30cm of snow over the weekend will continue to build storm slabs.
Use caution in steep, sheltered terrain.
A layer of weak facets is lurking at the bottom of the snowpack. This new snow may be enough to affect this basal weakness in shallow snowpack areas.
It is possible to trigger deep slabs from shallow snowpack areas. If triggered, these will have severe consequences. Terrain management is critical to a safe day.
A few CM of new snow may add to the volume of loose dry avalanches, which have been occurring naturally as the snowpack surface facetted with cold temps. Ice climbers should consider consequences of an avalanche if climbing in confined gully features
Variable winds through the weekend are expected to move alpine snow around. Although slab formation will likely be slow with cold dry snow, the bond to the dry, faceted surface snow will be weak.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
Variable winds through the weekend are expected to move alpine snow around. Although slab formation will likely be slow with cold dry snow, the bond to the dry, faceted surface snow will be weak.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
Ongoing winds have hammered the alpine and exposed areas at tree line, making for challenging travel conditions. Slabs vary from hard and supportive to pockets of wind-loaded facets. At lower elevations slabs could propagate on buried surface hoar.
Older wind slabs are still active in isolated areas.  Watch for pockets of these in steeper alpine areas, as well as below cliff faces where spin drift has formed thicker slabs.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
Variable winds through the weekend are expected to move alpine snow around. Although slab formation will likely be slow with cold dry snow, the bond to the dry, faceted surface snow will be weak.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
It is possible to trigger deep slabs from shallow snowpack areas. If triggered, these will have severe consequences. Terrain management is critical to a safe day.
Little new snow to add to the volume in active loose dry avalanches occurring naturally in the facetted snow from recent cold temps. Ice climbers should consider consequences of an avalanche if climbing in confined gully features
Ongoing winds have hammered the alpine and exposed areas at tree line, making for challenging travel conditions. Slabs vary from hard and supportive to pockets of wind-loaded facets. At lower elevations slabs could propagate on buried surface hoar.
15cm of new snow and surface facets are sluffing fast in steep alpine terrain. Be very cautious of being hit by these loose avalanches while moving in gullies and confined terrain. Sun-warmed cliffs can shed snow quickly, triggered loose avalanches.
New snow and some light North wind have created new soft windslabs in the last 24 hours. As of today these slabs were not producing anything larger than a size 2. 
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
It is possible to trigger deep slabs in shallow snowpack areas. Terrain management and assessment is critical to a safe day.
New snow and some light North wind have created new soft windslabs in the last 24 hours. As of today these slabs were not producing anything larger than a size 2.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
Previous strong winds have hammered the alpine and exposed areas at tree line, making for challenging travel conditions. Slabs vary from hard and supportive to pockets of wind-loaded facets. At lower elev slabs could propagate on buried surface hoar.
15cm of new snow and surface facets are sluffing fast in steep alpine terrain. Be very cautious of being hit by these loose avalanches while moving in gullies and confined terrain. Sun-warmed cliffs can shed snow quickly, triggered loose avalanches.
It is possible to trigger deep slabs in shallow snowpack areas. Terrain management and assessment is critical to a safe day.
Sun can act as a trigger to initiate the loose unconsolidated surface snow particularly in steep rocky terrain. Definitely a problem ice climbers should keep on radar where a small slide can quickly gain mass particularly in terrain traps.
Wind slabs will continue to develop on all aspects with winds switching from W to NE on Wednesday.
A layer of weak facets is lurking at the bottom of the snowpack. This new snow may be enough to affect this basal weakness in shallow snowpack areas.
New snow and some light North wind have created new soft wind slabs. These slabs have yet to produce anything larger than a size 2.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
New snow and some light North wind have created new soft wind slabs. These slabs have yet to produce anything larger than a size 2.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
Previous strong winds have hammered the alpine and exposed areas at tree line. Buried slabs vary from hard and supportive to pockets of wind-loaded facets. At lower elev slabs could propagate on buried surface hoar.
15cm of new snow covers surface facets and surface hoar. The storm snow is bonding poorly and easily sluffing in steep alpine terrain. Be cautious of being hit by these loose avalanches while moving in gullies, chutes and confined terrain features.
It is possible to trigger deep slabs in shallow snowpack areas. Terrain management and assessment is critical to a safe day.
Sun may act as a trigger to initiate the loose unconsolidated surface snow particularly in steep rocky terrain. Definitely a problem ice climbers should keep on radar where small slides can gain mass particularly in terrain traps.
New snow and Light to Moderate westerly winds have created wind slabs. These slabs have yet to produce anything larger than a size 2.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
New snow and Light to Moderate westerly winds have created wind slabs. These slabs have yet to produce anything larger than a size 2.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
A mix of old and new wind slabs have been found on various aspects that in the short term will be something to watch for in the terrain. 
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
Sun may act as a trigger to initiate the loose unconsolidated surface snow particularly in steep rocky terrain. Definitely a problem ice climbers should keep on radar where small slides can gain mass particularly in terrain traps.
It is possible to trigger deep slabs in shallow snowpack areas. Terrain management and assessment is critical to a safe day.
Pockets of reactive wind slab still exist in the alpine and open areas at tree line, though becoming hard to find. But remember, even a small wind slab can have big consequences in the right/wrong terrain feature (steep, rocky, exposed terrain, etc).
20cm of recent snow covers facets and surface hoar. The snow is bonding poorly and easily sluffing in steep terrain. Be cautious of being hit or triggering these loose avalanches while in gullies, chutes and exposed steep rocky terrain.
A mix of old and new wind slabs have been found on various aspects that in the short term will be something to watch for in the terrain.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
Pockets of wind slab still exist in the alpine and open areas at tree line, though becoming hard to find. Even a small wind slab can have big consequences in the right/wrong terrain feature (steep, rocky, exposed terrain, etc).
15cm of settled snow covers facets and surface hoar, the snow is bonding poorly and sluffs easily. Be cautious on solar aspects where the sun can weaken the upper snowpack, especially in steep rocky terrain.
A mix of old and new wind slabs have been found on various aspects that in the short term will be something to watch for in the terrain.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
The sun will act as a trigger to initiate the loose unconsolidated surface snow particularly in steep rocky terrain near and above ice climbs.
It is possible to trigger deep slabs in shallow snowpack areas. Terrain management and assessment is critical to a safe day.
A mix of old and new wind slabs have been found on various aspects that in the short term will be something to watch for in the terrain.
A sustained period of cold weather has driven the faceting process in the upper snowpack creating weak, dry surface snow. In steep terrain, these are sensitive to small natural and human triggers and can quickly gain enough mass to affect travelers.
Wind slabs will continue to develop with moderate to strong westerly winds on Friday, and moderate Easterly winds on Sunday
A layer of weak depth hoar and facets is lurking at the bottom of the snowpack. Recent snow may have been enough to overload this layer in thin snowpack areas.
Pockets of wind slab still exist in the alpine and open areas at tree line, though becoming hard to find. Even a small wind slab can have big consequences in certain terrain features (steep, rocky, exposed terrain, etc).
A mix of new wind slabs and old buried slabs have been found on various aspects that continue to be worth watching for in steep terrain.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are sensitive to small natural and human triggers and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
Strong SW winds at parkers upper for the last 24 hours, creating wind slabs in immediate lee's.
It is possible to trigger deep slabs in shallow snowpack areas. Terrain management and assessment is critical to a safe day.
A mix of new wind slabs and old buried slabs have been found on various aspects that continue to be worth watching for in steep terrain.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are sensitive to small natural and human triggers and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
Backcountry travelers may find pockets of wind slab in the alpine and open areas at tree line. Even a small wind slab can have big consequences in certain terrain features (steep, rocky, exposed terrain, etc).
Winds slabs formed from recent W winds have now been buried by Saturdays snowfall and may be hard to detect.
Recent snow has been enough to create a slab over deep instabilities below treeline where the snowpack is shallow and weak, and melt freeze crusts have been preserved. These were reactive to skier traffic on Mt. Bertha on Thursday.
A mix of new wind slabs and old buried slabs have been found on various aspects that continue to be worth watching for in steep terrain. While these are more isolated and of smaller size at treeline they still warrant careful terrain selection.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are sensitive to small natural and human triggers and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
A mix of new wind slabs and old buried slabs have been found on various aspects that continue to be worth watching for in steep terrain. While these are more isolated and of smaller size at treeline they still warrant careful terrain selection.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are sensitive to small natural and human triggers and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
Strong SW winds blew for 24 hours yesterday in the columbia Icefields area, and have now switched to steady moderate from N. In the southern areas of the bulletin region, expect a cornucopia of windslabs on a variety of aspects.
Although natural deep persistent slab avalanches have been few and far between lately, they are still possible in isolated places. Steep, unsupported, and thin/variable depth are factors to be wary of.
This problem is probably isolated to terrain where surface snow doesn't show signs of previous wind affect : all elevations at the north end of the bulletin region, but only lower elevations in the Columbia Icefields region
Windslab in the alpine presently appears to be more of a ski quality issue than an avalanche problem. However given the right location (steep, rocky, thin snowpack feature etc.) it may still be possible to trigger the slab.
A mix of new wind slabs and old buried slabs have been found on various aspects that continue to be worth watching for in steep terrain. While these are more isolated and of smaller size at treeline they still warrant careful terrain selection.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are sensitive to small natural and human triggers and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
A mix of new wind slabs and old buried slabs have been found on various aspects that continue to be worth watching for in steep terrain. While these are more isolated and of smaller size at treeline they still warrant careful terrain selection.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are sensitive to small natural and human triggers and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
Although the basal weakness (depth hoar) is generally dormant, with no recent natural loading of the snowpack, these may still be possible in isolated places. Steep, unsupported, and thin depth are factors to be wary of, as are cornices overhead.
Isolated to steep terrain where surface snow doesn't show signs of previous wind affect : all elevations at the north end of the bulletin region, but only lower elevations in the Columbia Icefields region
Wind slab in the alpine presently appears to be more of a ski quality issue than an avalanche problem. However given the right location (steep, rocky, thin snowpack feature etc.) it may still be possible to trigger the slab.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
We expect a few lingering windslabs, but for the most part these slabs are old and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Watch out for pockets of windslabs in the alpine in immediate lee's
Although the basal weakness (depth hoar) is generally dormant, with no recent natural loading of the snowpack, these may still be possible in isolated places. Steep, unsupported, and thin depth are factors to be wary of, as are cornices overhead.
Isolated to steep terrain where surface snow doesn't show signs of previous wind affect : all elevations at the north end of the bulletin region, but only lower elevations in the Columbia Icefields region
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
We expect a few lingering windslabs, but for the most part these slabs are old and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.
Watch for reverse loading with recent N-E Winds.
Recent snow has been enough to create a  windslab over deep instabilities below treeline where the snowpack is shallow and weak, and melt freeze crusts have been preserved.
Loose sluffs in steep terrain can push a person off their feet. South-facing gullies are receiving small, incremental amounts of loose, dry snow from northerly winds.
Wind slab in the alpine presently appears to be more of a ski quality issue than an avalanche problem. However given the right location (steep, rocky, thin snowpack feature etc.) it may still be possible to trigger the slab.
Isolated to steep terrain where surface snow doesn't show signs of previous wind affect.
Watch out for pockets of windslab in the alpine from previous SW switching to Northerly winds
Although the basal weakness (depth hoar) is generally dormant, with no recent natural loading of the snowpack, these may still be possible in isolated places.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
We expect a few lingering windslabs, but for the most part these slabs are old and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
We expect a few lingering windslabs, but for the most part these slabs are old and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Loose sluffs in steep terrain can push a person off their feet. South-facing gullies are receiving small, incremental amounts of loose, dry snow from northerly winds.
Wind slab in the alpine presently appears to be more of a ski quality issue than an avalanche problem. However given the right location (steep, rocky, thin snowpack feature etc.) it may still be possible to trigger the slab.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
We expect a few lingering windslabs, but for the most part these slabs are old and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
We expect a few lingering windslabs, but for the most part these slabs are old and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Isolated to steep terrain where surface snow doesn't show signs of previous wind affect.
Although the basal weakness (depth hoar) is generally dormant, with no recent natural loading of the snowpack, these may still be possible in isolated places.
Previous moderate to strong winds and cold temperatures have been promoting wind slab development. Reactive wind slabs are occurring in isolated areas, these slabs may be overlying old dormant wind slabs or weak facetted snow.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
We expect a few lingering windslabs, but for the most part these slabs are old and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
We expect a few lingering windslabs, but for the most part these slabs are old and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Point release activity is increasing with strong solar input particularly on steep S and W aspects at TL and below.
The basal weakness (aka depth hoar) is generally dormant; however, these may be possible to trigger in isolated shallow snowpack places.
Watch for new windslabs developing with NE winds, and old windslabs on all aspects.
The basal weaknesses are well bridged in deeper snowpack areas, but there remains the possibility to be surprised in thin snowpack areas.
Previous moderate to strong winds and cold temperatures have been promoting wind slab development. Reactive wind slabs are occurring in isolated areas, these slabs may be overlying old dormant wind slabs or weak facetted snow.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
We expect a few lingering windslabs, but for the most part these slabs are old and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
We expect a few lingering windslabs, but for the most part these slabs are old and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Point release activity can increase with strong solar input particularly on steep S and W aspects at all elevations. Cold temperatures continue to facet the surface snow causing it to loose cohesion.
The basal weakness (aka depth hoar) is generally dormant; however, these may be possible to trigger in isolated shallow snowpack places.
Moderate to strong winds and cold temperatures have been promoting wind slab development. Reactive wind slabs are occurring in isolated areas, these slabs may be overlying old dormant wind slabs or weak facetted snow.
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
A mix of fresh and old wind slabs have been stubborn but active, and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
A sustained period of cold weather has created weak, dry, faceted surface snow. In steep terrain, these facets are easily triggered and can quickly gain enough mass to affect skiers and climbers, especially in gullies.
A mix of fresh and old wind slabs have been stubborn but active, and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Cold temperatures continue to facet the surface snow causing it to loose cohesion. Point release activity will increase with strong solar input on steep S and W aspects at all elevations.
The basal weakness (aka depth hoar) is generally dormant; however, these may be possible to trigger in isolated shallow snowpack places.
Moderate to strong winds and cold temperatures have been promoting wind slab development. Reactive wind slabs are occurring in isolated areas, these slabs may be overlying old dormant wind slabs or weak facetted snow.
Loose dry point release slides were sporadically occurring on steep solar aspects yesterday afternoon. Look for this to happen again today with prolonged solar input.
Cold weather has created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers. Solar triggering of this problem will be come more of a concern over the next few days.
A mix of fresh and old wind slabs have been stubborn but active, and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Cold weather has created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers. Solar triggering of this problem will be come more of a concern over the next few days.
A mix of fresh and old wind slabs have been stubborn but active, and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Cold temperatures continue to facet the surface snow causing it to loose cohesion. Point release activity will increase with strong solar input on steep S and W aspects at all elevations.
The basal weakness (aka depth hoar) is generally dormant; however, these may be possible to trigger in isolated shallow snowpack places.
Moderate to strong winds and cold temperatures have been promoting wind slab development. Reactive wind slabs are occurring in isolated areas. These slabs may be overlying old dormant wind slabs or weak faceted snow.
Loose dry point release slides are a possibility on southern aspects with prolonged solar input.
Cold temperatures continue to facet the surface snow causing it to loose cohesion. Point release activity will increase with strong solar input on steep S and W aspects at all elevations.
The basal weakness (aka depth hoar) is generally dormant; however, these may be possible to trigger in isolated shallow snowpack places.
Cold weather has created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers. Solar triggering of this problem will be come more of a concern over the next few days.
A mix of fresh and old wind slabs have been stubborn but active, and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Old windslabs are lingering in the alpine, and new windslabs will be forming as winds increase from the SW on Thursday
The basal weaknesses are well bridged in deeper snowpack areas, but there remains the possibility to be surprised in thin snowpack areas.
Cold weather has created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers. Solar triggering of this problem will be come more of a concern over the next few days.
A mix of fresh and old wind slabs have been stubborn but active, and are likely only to be found in very steep or extreme terrain near wind exposed ridge crests. Pay close attention to the feeling of the surface snow under your feet.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Moderate to strong winds and cold temperatures have been promoting wind slab development. Reactive wind slabs are occurring in isolated areas. These slabs may be overlying old dormant wind slabs or weak faceted snow.
Today the solar input will be the strongest we have seen during this cold dry spell. Loose dry point releases are possible on steep southern aspects. Snow around cliff bands and rocks, are the most likely starting points for the loose dry problem.
Cold weather has created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers. Solar triggering of this problem will be come more of a concern over the next few days.
Cold temperatures have facetted/weakened the upper snowpack. Point release activity will increase with warming on steep solar aspects at all elevations.
The weak and facetted snowpack is about to be tested by warming temperatures, then some new snow, for the first time in over a month. Triggering of the basal weakness may become possible in areas where the snowpack above still retains some cohesion.
Cold weather has created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers. Solar triggering of this problem will be come more of a concern over the next few days.
Previous strong winds and cold temperatures have formed wind slabs. These generally &quot;small&quot; reactive wind slabs can still be found in isolated areas. The slabs may be overlying old dormant wind slabs, and or weak faceted snow.
Cold weather has created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers.
Cold weather has created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers.
The weak and facetted snowpack is about to be tested by warming temperatures, then some new snow, for the first time in over a month. Triggering of the basal weakness may become possible in areas where the snowpack above still retains some cohesion.
New snow and west winds could create wind slabs in the alpine.
Small amounts of new snow can add up to sizeable sluffs in steep, confined gullies. Best to give steep couloirs a miss today as the new snow will likely not bond well to the crusts on S aspects, nor the loose facets on N aspects.
Previous strong winds and cold temperatures have formed wind slabs. These generally &quot;small&quot; reactive wind slabs can still be found in isolated areas. The slabs may be overlying old dormant wind slabs, and or weak faceted snow.
Cold weather has created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers. Forecasted snow and winds could increase the reactivity of this problem in the alpine.
Cold weather has created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers. Forecasted snow and winds could increase the reactivity of this problem in the alpine.
New snow and west winds could create wind slabs in the alpine. These slabs sit above a new surface hoar layer and temperature crusts on solar facing slopes.
The weak and facetted snowpack is about to be tested by warming temperatures, then some new snow, for the first time in over a month. Triggering of the basal weakness may become possible in areas where the snowpack above still retains some cohesion.
Winds have shifted from NE to SW on Thursday. Watch for Windslabs on all aspects in exposed terrain.
The basal weaknesses are well bridged in deeper snowpack areas, but there remains the possibility to be surprised in thin snowpack areas.
The 10cm of new snow is not likely to bond very well to crusts on solar aspects and facets on polar aspects and should be a concern if considering riding steep faces, skiing above cliffs or traveling in confined chutes.
New snow and moderate Southerly winds have formed wind slabs along lee and cross loaded features. The slabs may be overlying weak faceted snow so watch for shooting cracks, settlements and hollow sounds from the snowpack.
Cold weather created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers. The new snow and winds have triggered many events in the last 24 hrs.
Touchy new slabs can be found in wind loaded areas up to 40cm thick. These slabs will be found sitting on the weak, faceted snow that was previously on the surface and we expect the bond to this snow to be poor.
Cold weather created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers. The new snow and winds have triggered many events in the last 24 hrs.
Touchy new slabs can be found in wind loaded areas up to 40cm thick. These slabs will be found sitting on the weak, faceted snow that was previously on the surface and we expect the bond to this snow to be poor.
While skiier triggered sluffs may be possible in some areas if adventuring into very steep, shaded terrain, minimal natural activity is expected.  If any, it will be isolated to steep sunny slopes during the afternoons.
30cm of recent snow and moderate Southerly winds have formed wind slabs along lee and cross loaded features. The slabs may be overlying weak faceted snow so watch for shooting cracks, settlements and hollow sounds from the snowpack.
The recent snow is not likely to bond well to crusts and facets and should be a concern if considering riding steep faces, skiing above cliffs or traveling in confined chutes. If the sun shines today watch for point releases from steep, rocky areas.
Skier triggered sluffs may be possible on both sun, and shaded terrain; minimal natural activity is expected. If any, it will be isolated to steep sunny slopes during the afternoons.
Cold weather created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers.
New small slabs can be found in wind loaded areas up to 40cm thick. These slabs will be found sitting on the weak, faceted snow that was previously on the surface .
Cold weather created weak, faceted surface snow. In steep terrain, these facets are easily triggered and can gain enough mass to affect skiers and climbers.
New small slabs can be found in wind loaded areas up to 40cm thick. These slabs will be found sitting on the weak, faceted snow that was previously on the surface .
30cm of recent snow and moderate Southerly winds have formed wind slabs along lee and cross loaded features. The slabs may be overlying weak faceted snow so watch for shooting cracks, settlements and hollow sounds from the snowpack.
The recent snow is not likely to bond well to crusts and facets and should be a concern if considering riding steep faces or traveling in confined chutes, manage your sluff. If the sun shines today watch for point releases from steep, rocky areas.
Fresh wind slabs will develop through the day on lee features from Strong-Extreme SW winds.
Thin slabs can be found in wind loaded areas above treeline. These slabs are sitting on the weak, faceted snow that was previously on the surface and can be triggered by skiers or climbers.
Previous cold temperatures created weak, faceted surface snow. In steep terrain, these facets remain easily triggered and can gain enough mass to affect skiers and climbers.&nbsp; Narrow gullies are where this is most concerning.
Thin slabs can be found in wind loaded areas above treeline. These slabs are sitting on the weak, faceted snow that was previously on the surface and can be triggered by skiers or climbers.
Previous cold temperatures created weak, faceted surface snow. In steep terrain, these facets remain easily triggered and can gain enough mass to affect skiers and climbers. Narrow gullies are where this is most concerning.
Another 10-15cm of new snow today; plus, the 30cm of recent storm snow and moderate winds, will form soft slabs in the Alpine and exposed areas of tree line. The slabs may be overlying weak faceted snow, old wind slabs, or a sun crust.
The recent snow is unlikely to bond well to crusts and facets, and should be a concern if considering riding steep faces or traveling in confined chutes; manage your sluff accordingly.
Fresh wind slabs will continue to grow throughout Monday night, lee to Strong SW winds. Expect these to be larger and more prevalent in the icefields, which is catching the brunt of the storm.
Skiier triggered Loose Dry avalanches increase in sensitivity Monday (steep sheltered areas), with new snowfall overlying loose facets.
New snow and strong SW winds are building slabs in open areas above treeline. These slabs are sitting on the weak, faceted snow that was previously on the surface and as a result can run further than expected when triggered.
Previous cold temperatures created weak, faceted surface snow. In steep terrain, these facets remain easily triggered and can gain enough mass to affect skiers and climbers. Narrow gullies are where this is most concerning.
New snow and strong SW winds are building slabs in open areas above treeline. These slabs are sitting on the weak, faceted snow that was previously on the surface and as a result can run further than expected when triggered.
Previous cold temperatures created weak, faceted surface snow. In steep terrain, these facets remain easily triggered and can gain enough mass to affect skiers and climbers. Narrow gullies are where this is most concerning.
25cm of new snow in the last 24 hours, plus the 30cm of recent storm snow, has formed soft slabs in the Alpine and exposed areas of Tree Line. Storm slabs may be overlying weak faceted snow, old wind slabs, or a sun crust.
If the sun makes an appearance today, steep solar aspects will shed the new snow. Skiers will likely be able to trigger loose dry slides, on steep unsupported terrain features on all aspects.
New snow and strong SW winds have built slabs in open areas above treeline. These slabs are sitting on the weak, faceted snow that was previously on the surface and as a result can run further than expected when triggered.
Previous cold temperatures created weak, faceted surface snow. In steep terrain, these facets remain easily triggered and can gain enough mass to affect skiers and climbers. Narrow gullies are where this is most concerning.
New snow and strong SW winds have built slabs in open areas above treeline. These slabs are sitting on the weak, faceted snow that was previously on the surface and as a result can run further than expected when triggered.
Previous cold temperatures created weak, faceted surface snow. In steep terrain, these facets remain easily triggered and can gain enough mass to affect skiers and climbers. Narrow gullies are where this is most concerning.
Natural triggering has abated but human triggering remains a possibility, particularly in steep sheltered terrain.
Fresh windslabs sit on a variety of old surfaces, these will take several days to settle and stabilize.
45-50cm of new snow over the last week has become a cohesive soft slab in the Alpine and exposed areas of Tree Line. Storm slabs may be overlying weak faceted snow, old wind slabs, or a sun crust. The bond to these old surfaces is variable.
When the sun makes an appearance today, steep solar aspects will shed the new snow. Skiers will likely be able to trigger loose dry slides on steep unsupported terrain features from all aspects.
Natural triggering has abated but human triggering remains a possibility, particularly in steep sheltered terrain.
Fresh windslabs sit on a variety of old surfaces, these will take several days to settle and stabilize.
New snow and strong SW winds have built variable wind slabs in open areas above treeline. These slabs are sitting on the weak, faceted snow that was previously on the surface and as a result can run further than expected when triggered.
If triggered on their own, loose dry avalanches that are smaller in size can be initiated in steep terrain.&nbsp; If triggered by a wind slab, much larger avalanches that can run far are possible as they entrains facets on the way down.
New snow and strong SW winds have built slabs in open areas above treeline. These slabs are sitting on the weak, faceted snow that was previously on the surface and as a result can run further than expected when triggered.
al';font-style: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_6F88C6A0">If triggered on their own, loose dry avalanches that are smaller in size can be initiated in steep terrain.  If triggered by a wind slab, much larger avalanches that can run far are possible as they entrains facets on the way down.</span><span class="s_AA239
45-50cm of new snow over the last week has become a cohesive soft slab in the Alpine and exposed areas at tree-line. Storm slabs may be overlying weak faceted snow, old wind slabs, or a sun crust. The bond to these old surfaces is variable.
Brief periods of intense sunshine are enough to trigger loose avalanches. This being said, northerly aspects are also prone to loose, dry avalanches with the new snow lying on facets.
Natural triggering has abated but human triggering remains a possibility, particularly in steep sheltered terrain.
Fresh windslabs sit on a variety of old surfaces. Winds continue to gust moderate from the SW.
New snow and strong SW winds have built variable wind slabs in open areas above treeline. These slabs are sitting on the weak, faceted snow that was previously on the surface and as a result can run further than expected when triggered.
If triggered on their own, loose dry avalanches that are smaller in size can be initiated in steep terrain. If triggered by a wind slab, much larger avalanches that can run far are possible as they entrains facets on the way down.
New snow and strong SW winds have built slabs in open areas above treeline. These slabs are sitting on the weak, faceted snow that was previously on the surface and as a result can run further than expected when triggered.
span class="s_6F88C6A0">If triggered on their own, loose dry avalanches that are smaller in size can be initiated in steep terrain. If triggered by a wind slab, much larger avalanches that can run far are possible as they entrains facets on the way down.
15-20cm of recent snow has formed windslabs. If the sun makes an appearance during the day, these will become easier to trigger.
There remains the possibility to be surprised by deep weak layers in thin snowpack areas. As temperatures rise these will become increasingly unpredictable.
Expect the blower pow that fell overnight to sluff easily and keep in mind that it's sitting on up to 50cm of snow from earlier this week that could also get moving with it! Natural avalanches are possible on solar aspects if the sun comes out.
At treeline and above the recent snow has settled into a soft slab that is up to 50cm deep. The storm slab is bonding poorly in areas where sits on weak faceted snow or a sun crust. Strong SW winds will be adding to this slab and may trigger naturals
Fresh wind slabs sit on a variety of old surfaces. Winds continue to gust moderate from the SW.
Natural triggering has abated but human triggering remains a possibility, particularly in steep north facing sheltered terrain.
New snow and strong SW-W winds have built wind slabs in open areas above treeline. In some cases, these slabs sit over the weak faceted snow and have been sensitive to triggering. In may cases, these slabs initiate a loose dry avalanche as well.
The faceted snow is easily initiated as a sluff in steep terrain that will entrain all available loose snow until it hits lower angled terrain. If a windslab or cornice initiates these, expect increased width, mass, momentum and reach.
New snow and strong SW-W winds have built wind slabs in open areas above treeline. In some cases, these slabs sit over the weak faceted snow and have been sensitive to triggering. In may cases, these slabs initiate a loose dry avalanche as well.
The faceted snow is easily initiated as a sluff in steep terrain that will entrain all available loose snow until it hits lower angled terrain. If a windslab or cornice initiates these, expect increased width, mass, momentum and reach.
Expect new snow to sluff easily and keep in mind that it's sitting on up to 50cm of snow from earlier this week that could also get moving with it! Natural avalanches are possible on solar aspects if the sun comes out.
At treeline and above the recent snow has settled into a soft slab that is up to 50cm deep and is bonding poorly in areas where it sits on weak, faceted snow or on a sun crust.
Fresh wind slabs sit on a variety of old surfaces. Winds continue to gust moderate from the SW.
Strong SW-W winds have built wind slabs in open areas above treeline. In may cases, these slabs initiate a larger loose dry avalanche as they run. In a few examples these slides have gouged to the deep persistent layers near the base of the snowpack
The faceted snow is easily initiated as a sluff in steep terrain that will entrain all available loose snow until it hits lower angled terrain. If a windslab or cornice initiates these, expect increased width, mass, momentum and reach.
While moist snow avalanches will start to become a problem themselves at lower elevations, as solar heating starts to take hold, consider a wider range of possible triggers to be available for the avalanche problems at upper elevations as well.
Strong SW-W winds have built wind slabs in open areas above treeline. In may cases, these slabs initiate a larger loose dry avalanche as they run. In a few examples these slides have gouged to the deep persistent layers near the base of the snowpack
The faceted snow is easily initiated as a sluff in steep terrain that will entrain all available loose snow until it hits lower angled terrain. If a windslab or cornice initiates these, expect increased width, mass, momentum and reach.
While moist snow avalanches will start to become a problem themselves at lower elevations, as solar heating starts to take hold, consider a wider range of possible triggers to be available for the avalanche problems at upper elevations as well.
Dry/moist loose avalanches can be easily triggered in steep terrain and gather mass and momentum quickly. Natural and human triggered avalanches are likely on Southerly aspects when the solar radiation is strong.
At treeline and above the recent snow has settled into a soft slab that is up to 50cm deep and is bonding poorly in areas where it sits on weak, faceted snow or on a sun crust. Rising temperatures will put additional stress on this layer.
Watch out for any sunny, steep features. Expecting some recovery to the surface freeze, overnight Sunday. Progressively rising hazard over the day.
Fresh wind slabs sit on a variety of old surfaces. Winds continue to gust at light to moderate values from the SW.
Potential for triggering will increase significantly over the week as the temperatures seep into the snowpack. If triggered, it's expected to be very large, running full path.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
10-50 cm of snow since March 7 has formed slabs above treeline due to winds and warm temperatures and sits over a variety of weaker surfaces. Natural and skier triggering of this recent snow has occurred in the last several days on all aspects.
We are starting to see places where avalanches are failing on the basal weaknesses and scrubbing to ground. This is mostly occurring with large triggers in thin rocky areas but we expect this type of avalanche activity to increase with more heat.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
10-50 cm of snow since March 7 has formed slabs above treeline due to winds and warm temperatures. This sits over a variety of weaker surfaces. Natural and skier triggering of this recent snow has occurred in the last several days on all aspects.
We are starting to see places where avalanches are failing on the basal weaknesses and scrubbing to ground. This is mostly occurring with large triggers in thin rocky areas but we expect this type of avalanche activity to increase with more heat.
Loose avalanches are either running on hard bed surfaces, or entraining the faceted lower snowpack and running larger than normal.
Wind slabs formed on Thursday may still be reactive at higher elevations.
There remains a concern for deep weak layers in thin snowpack areas. Rapidly warming temperatures and solar radiation have the potential to wake them up.
Strong sunshine and rapidly increasing temp's will destabilize the upper snowpack, resulting in wet loose avalanches during the heat of the day. Aspects facing the sun should be avoided while they are baking in the sun.
At treeline and above the recent snow has settled into a soft slab that is up to 50cm deep and is bonding poorly in areas where it sits on weak, faceted snow or on a sun crust. Rising temperatures will put additional stress on this layer.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
10-50 cm of snow since March 7 has formed slabs above treeline due to winds and warm temperatures and sits over a variety of weaker surfaces. Natural and skier triggering of this recent snow has occurred in the last several days on all aspects.
We are starting to see places where avalanches are failing on the basal weaknesses and scrubbing to ground. This is mostly occurring with large triggers in thin rocky areas but we expect this type of avalanche activity to increase with more heat.
Loose avalanches are either running on hard bed surfaces, or entraining the faceted lower snowpack and running larger than normal.
Wind slabs formed on Thursday may still be reactive on shaded aspects at higher elevations.
There remains a concern for deep weak layers in thin snowpack areas. Rapidly warming temperatures and solar radiation have the potential to wake them up.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
10-50 cm of snow since March 7 has formed slabs above treeline due to winds and warm temperatures and sits over a variety of weaker surfaces. Natural and skier triggering of this recent snow has occurred in the last several days on all aspects.
We are starting to see places where avalanches are failing on the basal weaknesses and scrubbing to ground. This is mostly occurring with large triggers in thin rocky areas but we expect this type of avalanche activity to increase with more heat.
Progressively rising hazard over the day. Expect natural and human triggered loose wet avalanches on all sunny slopes, especially where steeper than 35 degrees. These are gouging to ground in thin areas.
As the upper snowpack becomes saturated with water, Wet Slabs are failing on solar aspects. In shallow areas, these are failing on the basal layers.
Strong sunshine and rapidly increasing temp's will destabilize the upper snowpack, resulting in loose wet avalanches during the heat of the day. Traveling in avalanche terrain is not recommended today; especially on solar aspects this afternoon.
At treeline and above the recent snow has settled into a soft slab that is up to 50cm deep and is bonding poorly in areas where it sits on weak, faceted snow or on a sun crust. Rising temperatures will put additional stress on this layer.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
10-20 cm settled snow (since Mar 7) has formed slabs above treeline due to winds and warm temperatures. They sit over a variety of weaker surfaces. Natural and skier triggering of this recent snow has occurred in the last several days on all aspects.
We are starting to see places where avalanches are failing on the basal weaknesses and scrubbing to ground. This is mostly occurring with large triggers in thin rocky areas but we expect this type of avalanche activity to increase with more heat.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
10-20 cm settled snow (since Mar 7) has formed slabs above treeline due to winds and warm temperatures. They sit over a variety of weaker surfaces. Natural and skier triggering of this recent snow has occurred in the last several days on all aspects.
We are starting to see places where avalanches are failing on the basal weaknesses and scrubbing to ground. This is mostly occurring with large triggers in thin rocky areas but we expect this type of avalanche activity to increase with more heat.
Progressively rising hazard over the day. Expect natural and human triggered loose wet avalanches on all sunny slopes, especially where steeper than 35 degrees. These are gouging to ground in thin areas.
As the upper snowpack becomes saturated with water, Wet Slabs are failing on solar aspects. In shallow areas, these are failing on the basal layers.
Strong sunshine and rapidly increasing temp's will destabilize the upper snowpack, resulting in loose wet avalanches during the heat of the day. Traveling in avalanche terrain is not recommended today, especially on solar aspects this afternoon.
At tree-line and above, a ~40cm soft slab is bonding poorly to the underlying sun crust, or to facets on shaded aspects. Warm temp's are peeling this slab off the mountains like a mandarin orange peel, very easily and in large pieces...
Progressively rising hazard over the day. Expect natural and human triggered loose wet avalanches on all sunny slopes, especially where steeper than 35 degrees. These are gouging to ground in thin areas.
As the upper snowpack becomes saturated with water, Wet Slabs are failing on solar aspects. In shallow areas, these are failing on the basal layers.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
10-50 cm settled snow (since Mar 7) has formed slabs above treeline due to winds and warm temperatures. They sit over a variety of weaker surfaces. Natural and skier triggering of this recent snow has occurred in the last several days on all aspects.
We have seen a few avalanches failing on the basal weaknesses and scrubbing to ground. This is mostly occurring with large triggers in thin rocky areas but we expect this type of avalanche activity to increase with more heat.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
10-50 cm settled snow (since Mar 7) has formed slabs above treeline due to winds and warm temperatures. They sit over a variety of weaker surfaces. Natural and skier triggering of this recent snow has occurred in the last several days on all aspects.
We have seen a few avalanches failing on the basal weaknesses and scrubbing to ground. This is mostly occurring with large triggers in thin rocky areas but we expect this type of avalanche activity to increase with more heat.
Strong sunshine and rapidly increasing temps will destabilize the upper snowpack, resulting in loose wet avalanches during the heat of the day. Traveling in avalanche terrain is not recommended today, especially on solar aspects this afternoon.
At tree-line and above, a ~40cm soft slab is bonding poorly to the underlying sun crust, or to facets on shaded aspects. The prolonged warmth has helped the mtns shed much of the slab, so where it still exists, be wary of its unstable nature.
No recent overnight cooling to help recovery. An inversion, layered around 2200-2300m may keep BTL cool overnight but not TL or above. This will mean a constant wet loose hazard, and exposure to BTL run outs should be carefully considered and limited
The upper snowpack is saturated with water, creating Wet Slabs which are failing on solar aspects, sometimes to ground. In shallow areas, these are failing on the basal layers and can move fast on the dryer, weak, facetted snow below.
Wind slabs formed on Thursday may still be reactive on shaded aspects at higher elevations.
There remains a concern for deep weak layers in thin snowpack areas. Warm temperatures and solar radiation have the potential to wake them up.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
Extended warm temperatures, solar radiation and buried weak layers are producing wet slab avalanches in all locations except high alpine, north (shady) aspects. The simple answer is to avoid all avalanche terrain until it cools and the snow freezes.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
Extended warm temperatures, solar radiation and buried weak layers are producing wet slab avalanches in all locations except high alpine, north (shady) aspects. The simple answer is to avoid all avalanche terrain until it cools and the snow freezes.
Strong sunshine and rapidly increasing temps will destabilize the upper snowpack, resulting in loose wet avalanches during the heat of the day. Traveling in avalanche terrain is not recommended today, especially on solar aspects this afternoon.
At tree-line and above, a ~40cm soft slab is bonding poorly to the underlying sun crust, or to facets on shaded aspects. The prolonged warmth has helped the mtns shed much of the slab, so where it still exists, be wary of its unstable nature.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
Extended warm temperatures, solar radiation and buried weak layers are producing wet slab avalanches in all locations except high alpine, north (shady) aspects. The simple answer is to avoid all avalanche terrain until it cools and the snow freezes.
Rapidly warming daytime temperatures and high solar inputs are causing loose wet avalanches to start by mid morning. Some of these are running long distances or triggering slabs along the way. Avoid exposure to these slopes when they heat up.
Extended warm temperatures, solar radiation and buried weak layers are producing wet slab avalanches in all locations except high alpine, north (shady) aspects. The simple answer is to avoid all avalanche terrain until it cools and the snow freezes.
At tree-line and above, a 40cm soft slab has bonded poorly to the underlying facets. This problem is most likely to be found on Northerly aspects in the alpine.
The amount of loose wet avalanche activity is related to the amount of solar input .&nbsp; The effects of this will be slightly diminished on Sunday depending on cloud cover but watch locally for heating.&nbsp;
10-50 cm settled snow (since Mar 7) has formed slabs in the alpine which sit over a variety of weaker surfaces. The snowpack is still generally cold on high north aspects despite recent warm temperatures.
The amount of loose wet avalanche activity is related to the amount of solar input . The effects of this will be slightly diminished on Sunday depending on cloud cover but watch locally for heating.
10-50 cm settled snow (since Mar 7) has formed slabs in the alpine which sit over a variety of weaker surfaces. The snowpack is still generally cold on high north aspects despite recent warm temperatures.
A freezing level up to 2000m and a chance of strong solar input could rapidly destabilize the upper snowpack, resulting in loose wet avalanches during the heat of the day.
At tree-line and above, a 40cm soft slab has bonded poorly to the underlying facets. This problem is most likely to be found on Northerly aspects in the alpine.
There has been very little recent evidence of an avalanche on high North aspects, however the layer can still be found in isolated areas. It is likely that this problem will be removed after another day without supporting evidence.
There has been very little recent evidence of an avalanche on high North aspects, however the layer can still be found in isolated areas. It is likely that this problem will be removed after another day without supporting evidence.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">High freezing levels, warm temperatures, a chance of solar input, and or rain, will continue to destabilize the upper snowpack. The loose wet avalanche cycle continues on from last week, also a </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/IMG_8463.JPG" target="_blank"><span class="s_9255B882">large glide crack released in Mounds path </span></a><span class="s_AA239A9B">yesterday.
At tree-line and above, a 40cm soft slab has bonded poorly to the underlying facets. This problem is most likely to be found on Northerly aspects in the alpine.
Be mindful of the change in wind direction on tuesday night.
There remains a concern for deep weak layers in thin snowpack areas. Warm temperatures and solar radiation have the potential to wake them up.
On north aspects in the alpine a 40cm soft slab remains, and has bonded poorly to the underlying facets.
With reduced solar inputs and a cooling temperature trend forecasted this week, the loose wet problem will be less of a concern. Any unforseen increases in temps/solar or significant rain could quickly increase the likelihood of this problem.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
With reduced solar inputs and a cooling temperature trend forecasted this week, the loose wet problem will be less of a concern. Any unforseen increases in temps/solar or significant rain could quickly increase the likelihood of this problem.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Thin soft slabs were formed with the new snow and moderate SW winds yesterday. Expect to find reactive slabs in the immediate lee features above tree-line and along ridges. These slabs will likely be triggered by sun today if it pokes out.
Clear skies and warming temperatures will increase the avalanche activity on solar aspects. The recent snow will quickly degrade with any direct solar inputs causing sluffing and loose wet activity.
Clear skies and warming temperatures will increase the avalanche activity on solar aspects. The recent snow will quickly degrade with any direct solar inputs causing sluffing and loose wet activity.
Expect a natural cycle of loose snow avalanches from steep solar slopes tomorrow.
It will take a couple of days for the new snow to settle, triggering loose dry avalanches in steep shady alpine terrain remains possible.
Thin soft slabs were formed with the new snow and moderate SW winds Tuesday. These are found in the immediate lee features at tree-line and above, and are most reactive where they sit on an underlying crust.
Expect a natural cycle of loose snow avalanches from steep solar slopes tomorrow.
It will take a couple of days for the new snow to settle, triggering loose dry avalanches in steep shady alpine terrain remains possible.
Clearing skies and warming temperatures will increase the avalanche activity, especially on solar aspects in the afternoon. The recent snow will quickly loose cohesion with any direct solar inputs causing sluffing and loose wet avalanche activity.
Weak buried facets are still present in many thin areas. On higher N aspects these have not necessarily been impacted much by the recent heat. This is not currently a big concern in most areas but something to keep in mind if entering bigger terrain.
With the sun forecast to make more of an appearance on Friday and Saturday, the new snow sitting on the previous hard crust will become increasingly reactive.
There remains a concern for deep weak layers in thin north facing alpine features that were not as affected by the recent warm spell.
Clearing skies and warming temperatures will increase the avalanche activity, especially on solar aspects in the afternoon. The recent snow will quickly loose cohesion with any direct solar inputs causing sluffing and loose wet avalanche activity.
Weak buried facets are still present in many thin areas. On higher N aspects these have not necessarily been impacted much by the recent heat. This is not currently a big concern in most areas but something to keep in mind if entering bigger terrain.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Surface melt-freeze crusts cap </span><a href="https://avalanche.org/avalanche-encyclopedia/isothermal/" target="_blank"><span class="s_9255B882">weak isothermal snow</span></a><span class="s_AA239A9B"> and the crust has been breaking down by mid afternoon on solar aspects. Use caution on steep slopes when crusts start to weaken, there is very little holding it together once the crust breaks down.
Thin soft slabs were formed with the new snow and moderate SW winds Tuesday. These are found in the immediate lee features at tree-line and above, and are most reactive where they sit on an underlying crust.
Depending where you are, avalanche activity may increase with an increase in solar activity.
Weak buried facets are still present in many thin areas. On higher N aspects these have not necessarily been impacted much by the recent heat. This is not currently a big concern in most areas but something to keep in mind if entering bigger terrain.
Depending where you are, avalanche activity may increase with an increase in solar activity.
Weak buried facets are still present in many thin areas. On higher N aspects these have not necessarily been impacted much by the recent heat. This is not currently a big concern in most areas but something to keep in mind if entering bigger terrain.
Expect a natural cycle of loose snow avalanches from steep solar slopes tomorrow.
It will take a couple of days for the new snow to settle, triggering loose dry avalanches in steep shady alpine terrain remains possible.
Natural cycle of loose snow avalanches can be expected from steep solar slopes
Depending where you are, avalanche activity may increase with an increase in solar activity.
Weak buried facets are still present in many thin areas. On higher N aspects these have not necessarily been impacted much by the recent heat. This is not currently a big concern in most areas but something to keep in mind if entering bigger terrain.
Depending where you are, avalanche activity may increase with an increase in solar activity.
Weak buried facets are still present in many thin areas. On higher N aspects these have not necessarily been impacted much by the recent heat. This is not currently a big concern in most areas but something to keep in mind if entering bigger terrain.
Dry snow remains on alpine, north aspect slopes. We have not seen an avalanche on problem this for a while, but if anywhere could release a dry slab it would be here. Approach this terrain carefully.
Dry snow remains on alpine, north aspect slopes. We have not seen an avalanche on problem this for a while, but if anywhere could release a dry slab it would be here. Approach this terrain carefully.
New snow on Thursday falling on a hard melt freeze crust could become reactive with daytime warming
Dry snow remains on alpine, north aspect slopes. We have not seen an avalanche regarding this problem for a while, but if anywhere could release a dry slab it would be here. Approach this terrain carefully.
Dry snow remains on alpine, north aspect slopes. We have not seen an avalanche regarding this problem for a while, but if anywhere could release a dry slab it would be here. Approach this terrain carefully.
Dry snow remains on alpine, north aspect slopes. We have not seen an avalanche regarding this problem for a while, but continue to observe the weakness in snowpack assessments. Heads up - if anywhere could release a dry slab it would be here.
Likely a cooler day with forecasted cloud cover for Wed and crusts will likely remain intact for the day. Should the forecasted weather be inaccurate, monitor the solar input and daytime heating to avoid any gully features where wet snow may run.
Dry snow remains on alpine, north aspect slopes. We have not seen an avalanche regarding this problem for a while, but continue to observe the weakness in snowpack assessments. Heads up - if anywhere could release a dry slab it would be here.
Likely a cooler day with forecasted cloud cover for Wed and crusts will likely remain intact for the day. Should the forecasted weather be inaccurate, monitor the solar input and daytime heating to avoid any gully features where wet snow may run.
Dry snow remains on alpine, north aspect slopes. We have only seen a few isolated occurrences in steep, isolated features like moraines and glacier rolls over the past week,&nbsp; but continue to observe the weakness in snowpack assessments.
Likely a cooler day with forecasted cloud cover for Thursday and crusts will likely remain intact for the day. Monitor the solar input and daytime heating to avoid any gully features where wet snow may run.
Dry snow remains on alpine, north aspect slopes. We have only seen a few isolated occurrences in steep, isolated features like moraines and glacier rolls over the past week, but continue to observe the weakness in snowpack assessments.
Likely a cooler day with forecasted cloud cover for Thursday and crusts will likely remain intact for the day. Monitor the solar input and daytime heating to avoid any gully features where wet snow may run.
10cm of new snow, accompanied by mod/strong S'ly winds, has created thin storm slabs in Alpine and Tree-line lee features. These slabs sit on a well-established melt-freeze crust and will likely be reactive to human triggering.
Dry snow remains on alpine, north aspect slopes. We have only seen a few isolated occurrences in steep, isolated features like moraines and glacier rolls over the past week, but continue to observe the weakness in snowpack assessments.
This problem is directly related to daytime heating and solar inputs. Even on a cloudy day localized solar effect can quickly change the snow stability. Monitor changing conditions and avoid gully features later in the day where wet snow may run.
Winds increasing with recent 10-15cm of snow overlying previous crust are potentially forming thin windslabs on lee aspects at upper treeline and higher locations from Southerly winds.
Daytime warming, the strong spring sun, and rain will all increase the potential for loose wet avalanches to occur. Start and end your day early before surface crusts have a chance to break down.
Dry snow remains on alpine, north aspect slopes. We have only seen a few isolated occurrences in steep, isolated features like moraines and glacier rolls over the past week, but continue to observe the weakness in snowpack assessments.
This problem is directly related to daytime heating and solar inputs. Even on a cloudy day localized solar effect can quickly change the snow stability. Monitor changing conditions and avoid gully features later in the day where wet snow may run.
10cm of recent snow accompanied by 25-40km/hr Southerly winds have created wind slabs in Alpine and Tree-line lee features. These slabs sit on a well-established melt-freeze crust and could be sensitive to human triggering.
A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. We have seen a few human triggered avalanches in steep, isolated features such as moraines and glacier rolls over the past week.
A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. We have seen a few human triggered avalanches in steep, isolated features such as moraines and glacier rolls over the past week.
With up to 30cm of unconsolidated snow available for transport now, and new snow on the way, watch for rapid slab formation Saturday with strong SW-W winds in the forecast.
Westerly and Southwest winds are creating windslabs in high alpine ridgetop isolated terrain particularly on East to Northeast aspects. Watch for local wind influences where this condition could exist on other aspects as well.
15cm of recent snow and moderate Southerly winds have created wind slabs in ALP and TL lee features. These slabs sit on a melt-freeze crust and could be sensitive to human triggering. In N ALP a surface hoar layer may be preserved.
A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. We have seen a few human triggered avalanches in steep, isolated features such as moraines and glacier rolls over the past week.
A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. We have seen a few human triggered avalanches in steep, isolated features such as moraines and glacier rolls over the past week.
Small, reactive windslabs already exist in immediate lees in the Alpine. With strong SW winds Saturday night, this problem may extend down to treeline on Sunday, especially along the Parkway where 5cm of new snowfall is expected overnight.
Natural avalanche activity, whumphing and test results indicate that small amounts of loading and sustained mild temperatures may be awakening a Persistent Weak Layer: facets buried 50cm down. This is more prevalent at the Columbia Icefields &amp; South.
15cm of recent snow and moderate Southerly winds have created wind slabs in alpine lee features. These slabs sit on a melt-freeze crust and could be sensitive to human triggering. A surface hoar layer may be buried ~20cm on Northerly alpine terrain.
A period of strong wind overnight on Saturday has created slabs in lee features in the alpine. Of note, evidence of these slabs was observed at the base of cones that are situated below couloirs. The windslabs were small in size (max size 1).
The new snow will react notably with localized solar input, so position yourself away from steep features while the sun is beating down. This is particularly relevant at higher elevation where recent snowfall amounts are greater. 
A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. We have seen a few human triggered avalanches in steep, isolated features such as moraines and glacier rolls over the past week.
A period of strong wind overnight on Saturday has created slabs in lee features in the alpine. Of note, evidence of these slabs was observed at the base of cones that are situated below couloirs. The windslabs were small in size (max size 1).
The new snow will react notably with localized solar input, so position yourself away from steep features while the sun is beating down. This is particularly relevant at higher elevation where recent snowfall amounts are greater.
A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. We have seen a few human triggered avalanches in steep, isolated features such as moraines and glacier rolls over the past week.
Pockets of windslab continue to build in alpine lees. With moderate-strong SW winds Saturday night into Sunday, this problem may now extend down to treeline.
Natural avalanche activity, whumphing and test results indicate that a weak layer of facets buried 50cm down is persisting in some areas. This is more prevalent at the Columbia Icefields &amp; South.
15cm of recent snow and moderate Southerly winds have created wind slabs in alpine lee features. These slabs sit on a melt-freeze crust and could be sensitive to human triggering. A surface hoar layer may be buried ~20cm on Northerly alpine terrain.
A period of strong wind overnight on Saturday has created slabs in lee features in the alpine. Of note, evidence of these slabs were observed at the base of cones that are situated below couloirs. The windslabs were small in size (max size 1).
A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. We have seen a few human triggered avalanches in steep, isolated features such as moraines and glacier rolls over the past week.
Daytime warming, the strong spring sun, and rain will all increase the potential for loose wet avalanches to occur.
A period of strong wind overnight on Saturday has created slabs in lee features in the alpine. Of note, evidence of these slabs were observed at the base of cones that are situated below couloirs. The windslabs were small in size (max size 1).
A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. We have seen a few human triggered avalanches in steep, isolated features such as moraines and glacier rolls over the past week.
Pockets of windslab in immediate lees will be buried by incoming new snow, making them more difficult to manage.
A weak layer of facets buried 30-50cm down is persisting in some areas. This is more prevalent at the Columbia Icefields &amp; South.
20cm of recent snow and moderate Southerly winds have created wind slabs in alpine lee features. These slabs sit on a melt-freeze crust and could be sensitive to human triggering. A surface hoar layer may be buried ~20cm on Northerly alpine terrain.
While wind-slabs from the weekend appear to be settling out, fresh snow and steady moderate wind from the NW is expected overnight on Tuesday. Because of this, forecasters anticipate new wind-slab development on Weds.
A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. Recent snowpack tests have produced hard results on the March 7th layer. Little recent avalanche activity noted on this layer.
While wind-slabs from the weekend appear to be settling out, fresh snow and steady moderate wind from the NW is expected overnight on Tuesday. Because of this, forecasters anticipate new wind-slab development on Weds.
A hard slab sitting over weak facets up to 60cm down remains a concern where found: mainly on N aspects in the alpine. Recent snowpack tests have produced hard results on the March 7th layer. Little recent avalanche activity noted on this layer.
Pockets of windslab in immediate lees will be buried by incoming new snow, making them more difficult to manage.
Evidence from recent snowpack tests and whumphing would suggest that a weak layer of facets persists down 20-50cm in some areas, and may be becoming reactive with incremental loading from recent small snowfalls.
20cm of recent snow and moderate Southerly winds have created wind slabs on specific terrain features in the alpine. These slabs overlie a melt-freeze crust on solar asp and or, surface hoar on polar asp. Wind slabs are sensitive to human triggering.
A weak melt-freeze crust is capping frail isothermal snow in thin snowpack areas BTL. These crusts are prevalent at tree-line and above on solar aspects. Crusts have been breaking down by mid afternoon from the heat of the day.
Evidence from recent snowpack tests and whumphing would suggest that a weak layer of facets persists down 20-50cm in some areas, and may be becoming reactive with incremental loading from recent small snowfalls.
This problem remains in our forecast due to the weak structure of the snowpack, but we have not seen it produce an avalanche for several weeks. Regardless, we suggest caution in high elevation shaded areas where the snowpack is unseasonably weak.
This problem remains in our forecast due to the weak structure of the snowpack, but we have not seen it produce an avalanche for several weeks. Regardless, we suggest caution in high elevation shaded areas where the snowpack is unseasonably weak.
A weak melt-freeze crust is capping frail isothermal snow in thin snowpack areas BTL. These crusts are prevalent at tree-line and above on solar aspects. Crusts have been breaking down by mid afternoon from the heat of the day.
20cm of recent snow and moderate Southerly winds have created wind slabs on specific terrain features in the alpine. These slabs overlie a melt-freeze crust on solar asp and or, surface hoar on polar asp.
This problem remains in our forecast due to the weak structure of the snowpack, but we have not seen it produce an avalanche for several weeks. Regardless, we suggest caution in high elevation shaded areas where the snowpack is unseasonably weak.
This problem remains in our forecast due to the weak structure of the snowpack, but we have not seen it produce an avalanche for several weeks. Regardless, we suggest caution in high elevation shaded areas where the snowpack is unseasonably weak.
Strong winds and snowfall above treeline on Friday and Saturday will form new windslabs. These will become more reactive if the sun comes out.
Evidence from recent snowpack tests and whumphing would suggest that a weak layer of facets persists down 20-50cm in some areas, and may be becoming reactive with incremental loading from recent small snowfalls.
Large Sluffs have been observed out of steep alpine terrain from the recent incremental snowfalls.
Up to 20cm of snow is forecasted for the Icefields region Thursday night and into Friday morning. (Very little snow is forecasted for the Maligne and Tonquin areas)
A melt-freeze crust is capping weak isothermal snow in thin snowpack areas BTL. These crusts are prevalent at tree-line and above on solar aspects. Crusts have been breaking down by mid afternoon from the heat of the day.
20cm of recent snow and moderate Southerly winds have created wind slabs on specific terrain features in the alpine. These slabs overlie a melt-freeze crust on solar asp and or, surface hoar on polar asp.
The first indications that recent snow has started to form a new slab are being reported. With winds expected to increase to moderate late Friday and then strong mid day Saturday, expect rapid development of new slabs.
These slabs remain a concern on north aspects in the alpine where March winds built slabs over the facetted snow from February's cold snap. It is wise to check in on this layer now found 40- 70cm deep before venturing into committing terrain.
The first indications that recent snow has started to form a new slab are being reported. With winds expected to increase to moderate late Friday and then strong mid day Saturday, expect rapid development of new slabs.
These slabs remain a concern on north aspects in the alpine where March winds built slabs over the facetted snow from February's cold snap. It is wise to check in on this layer now found 40- 70cm deep before venturing into committing terrain.
Fresh snow and moderate winds could create windslabs in the alpine and at treeline.
Evidence from recent snowpack tests and whumphing would suggest that a weak layer of facets persists down 20-50cm in some areas, and may be becoming reactive with incremental loading from recent small snowfalls.
Expect loose dry avalanches out of sheltered north alpine features.
Moderate S -W winds have redistributed last week's storm snow into pockets of windslab on alpine and treeline lee features. These slabs overlie  a melt freeze crust on solar aspects and given the right location, surface hoar on northerly aspects.
The first indications that recent snow has started to form a new slab are being reported. With winds expected to increase to moderate late Friday and then strong mid day Saturday, expect rapid development of new slabs.
These slabs remain a concern on north aspects in the alpine where March winds built slabs over the facetted snow from February's cold snap. It is wise to check in on this layer now found 40- 70cm deep before venturing into committing terrain.
The first indications that recent snow has started to form a new slab are being reported. With winds expected to increase to moderate late Friday and then strong mid day Saturday, expect rapid development of new slabs.
These slabs remain a concern on north aspects in the alpine where March winds built slabs over the facetted snow from February's cold snap. It is wise to check in on this layer now found 40- 70cm deep before venturing into committing terrain.
Fresh snow and moderate winds could create windslabs in the alpine
Evidence from recent snowpack tests and whumphing would suggest that a weak layer of facets persists down 20-50cm in some areas, and may be becoming reactive with incremental loading from recent small snowfalls.
10cm + of storm snow along with moderate to strong S-SW winds are forming thin storm slabs on alpine and exposed treeline lee slopes. These slabs may be sensitive to human triggering.
Pockets of lingering persistent slab may be found under today's storm snow. These slabs overlie crusts on solar aspects and given the right location, surface hoar on alpine north aspects.
Fresh snow and moderate winds have built fresh pockets of windslab in the alpine.
Evidence from recent snowpack tests and whumphing would suggest that a weak layer of facets persists down 20-50cm in some areas, and may be becoming reactive with incremental loading from recent small snowfalls.
Recent storm snow (20-50cm) has been redistributed by steady and moderate Westerly wind over the weekend. Some drifts in immediate lees are 100cm deep. Poor visibility has limited specific windslab observations as of Sun afternoon.
Recent storm snow has been producing loose dry avalanches from steep terrain. They are small in size and are not running particularly far.
These slabs remain a concern on north aspects in the alpine where March winds built slabs over the facetted snow from February's cold snap. Additionally, there is uncertainty as to how this layer will react with the recent storm snow load.
Recent storm snow (20-50cm) has been redistributed by steady and moderate Westerly wind over the weekend. Some drifts in immediate lees are 100cm deep. Poor visibility has limited specific windslab observations as of Sun afternoon.
Recent storm snow has been producing loose dry avalanches from steep terrain. They are small in size and are not running particularly far.
These slabs remain a concern on north aspects in the alpine where March winds built slabs over the facetted snow from February's cold snap. Additionally, there is uncertainty as to how this layer will react with the recent storm snow load.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">30cm + of storm snow along with moderate to strong S-SW winds, formed storm slabs in the alpine and exposed areas of treeline. These slabs were easily triggered by skiers yesterday, </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/20190414%20Sr%20Video%20Peak.jpg" target="_blank"><span class="s_9255B882">initiating from 50m away.</span></a><span class="s_AA239
Recent storm snow (20-50cm) has been redistributed by steady and moderate Westerly wind over the weekend. Some drifts in immediate lees are 100cm deep. Use extra caution in areas where the wind slab sit over a crust.
Clear weather forecasted for Tuesday will increase the solar input on southerly aspects. This increased heating will likely shed the recent storm snow on steep solar aspects as the day warms up.
Recent snow may begin to slide on solar aspects as the sun makes an appearance and temperatures rise.
Deep layers are still responsive to large triggers (think cornices or rain) on high north faces. Though triggering this layer is unlikely, it's not impossible as evidenced by a recent large avalanche on Mt. Blackiston
Recent storm snow (20-50cm) has been redistributed by steady and moderate Westerly wind over the weekend. Some drifts in immediate lees are 100cm deep. Use extra caution in areas where the wind slab sit over a crust.
Clear weather forecasted for Tuesday will increase the solar input on southerly aspects. This increased heating will likely shed the recent storm snow on steep solar aspects as the day warms up.
These small events have been noted from steep alpine terrain where climbers may frequent.
Evidence from recent snowpack tests and whumphing would suggest that a weak layer of facets persists down 20-50cm in some areas, and may be becoming reactive with incremental loading from recent small snowfalls or forecasted snow in the week ahead.
On going convective snow flurries will produce sufficient snow to create isolated pockets of windslab. Significant snow events forecasted for late Thursday and Friday will reactivate these formations and create new storm slabs.
Last weekend's storm snow buried a weak surface hoar layer at treeline and below, and a crust on steep solar aspects into the alpine. Cold temps appear to have decreased slab properties in the upper snowpack, but this layer should not be discounted.
Sluffing can entrain enough volume to become a significant hazard to Climbers, especially in confined space and terrain traps
This problem mostly exists in the alpine with the exception of isolated, exposed treeline features.
Reports of hard wind slabs on Sunday in combination with warming temperatures, increasing wind and light precip on Monday has brought the windslab problem back. Wind slab development will likely be limited to the alpine in lee areas.
Reports of hard wind slabs on Sunday in combination with warming temperatures, increasing wind and light precip on Monday has brought the windslab problem back. Wind slab development will likely be limited to the alpine in lee areas.
Any terrain with a skiable snowpack will likely have Windslab. Our last storm was accompanied by NE winds. We have now returned to a typical SW flow. The combination of these two events has seen Windslab development on all aspects.
A weak layer is down 25-45cm. It consists of surface hoar at treeline and below, and a crust on steep solar aspects into the alpine. Cold temps appear to have decreased slab properties in the upper snowpack, but this layer should not be discounted.
Windslab will continue to build over the next 48 hours in all open areas with moderate to strong west/north-west winds. Ice Climbers should be especially observant to wind loading patterns when choosing a venue for the day.
A combination of warm temperatures, increased winds and light precipitation has brought the wind slab problem back. Wind slab development will likely be limited to the alpine in lee areas.
A combination of warm temperatures, increased winds and light precipitation has brought the wind slab problem back. Wind slab development will likely be limited to the alpine in lee areas.
30cm + of new snow in the last 24 hours, and another 15cm of forecasted snow will form storm slabs in the Alpine and at Treeline. Winds are forecasted to increase this afternoon, which should spike today's avalanche cycle!
The new snow will struggle to bond to the old surface layers and sluff easily in steep terrain. Loose dry avalanches can gain mass and potentially trigger storm slabs and or persistent slabs.
Building storm slab with new precipitation and wind through the region.
New wind slab will continue to build over the next 12 hours in all open areas with moderate to strong west/south-west winds. Ice Climbers should be especially observant to wind loading patterns when choosing a venue for the day.
10-20 cm of recent storm snow accompanied by strong SW winds will have created fresh wind slabs in alpine and tree-line regions.
10-20 cm of recent storm snow accompanied by strong SW winds will have created fresh wind slabs in alpine and tree-line regions.
Approximately 50cm + of new snow in the last 36 hours, warm temperatures and strong winds formed storm slabs on all aspects and elevations. Loose dry avalanches are also problematic with this much new snow!
20-30 cm of recent storm snow accompanied by strong SW winds have created widespread wind slabs in alpine and tree-line regions. Slabs of 50cm thick have been reactive to skier traffic.
20-30 cm of recent storm snow accompanied by strong SW winds have created widespread wind slabs in alpine and tree-line regions. Slabs of 50cm thick have been reactive to skier traffic.
New soft windslabs have formed in the lee areas from the storm that just pushed through. The distribution at treeline is more isolated.
70cm of new storm snow has created reactive avalanche conditions on all aspects and elevations. Strong winds during the storm created pockets of heavy loading and slabs on lee features in the alpine.
Storm slabs have the potential to step down to a buried weak layer (Nov 23 Surface Hoar/ Crust) now down 60-80cm. It consists of surface hoar at treeline and below, and a crust on steep solar aspects into the alpine.
Avalanche hazard may be higher than forecast if snowfall amounts on Saturday exceed 15cm.
New soft windslabs have formed in the lee areas from the storm that just pushed through. The distribution at treeline is more isolated.
20-30cm of recent storm snow accompanied by strong SW winds have created wind slabs in alpine features and some treeline ridgetops. Expect an increase in the size and reactivity of these as we receive more snow and wind over the next couple of days.
If we receive the forecast snow and wind in addition to the 20-30cm we have received already, expect sloughing to be a concern in the short term.
20-30cm of recent storm snow accompanied by strong SW winds have created wind slabs in alpine features and some treeline ridgetops. Expect an increase in the size and reactivity of these as we receive more snow and wind over the next couple of days.
If we receive the forecast snow and wind in addition to the 20-30cm we have received already, expect sloughing to be a concern in the short term.
20cm of new snow is expected to form into a reactive storm slab as the day progresses. The new snow sits atop a previous storm slab from December 3rd that is still poorly bonded. The new snow may trigger this buried layer.
Storm slabs have the potential to step down to a buried weak layer (Nov 23 Surface Hoar/ Crust) now down +100cm. It consists of surface hoar at treeline and below, and a crust on steep solar aspects into the alpine.
40-50cm of recent storm snow accompanied by strong SW winds have formed storm slab. Expect an increase in the size and reactivity of these as we receive more snow and wind over the next 24 hours.
40-50cm of new snow has fallen, sloughing is a concern in steep terrain and gully features
The snowpack structure under the new snow is weak, consisting of facets and depth hoar. If an avalanche is triggered it has potential to scrub down to deeper layers.
40-50cm of recent storm snow accompanied by strong SW winds have formed storm slab. Expect an increase in the size and reactivity of these as we receive more snow and wind over the next 24 hours.
40-50cm of new snow has fallen, sloughing is a concern in steep terrain and gully features.
The snowpack structure under the new snow is weak, consisting of facets and depth hoar. If an avalanche is triggered it has potential to scrub down to deeper layers.
New soft windslabs have formed in the lee areas from the storm that just pushed through. The distribution at treeline is more isolated.
30cm of storm snow has formed a storm slab. The new snow sits atop a previous storm slab that is still poorly bonded to faceted snow and Dec 5th surface hoar layer.
Storm slabs have the potential to step down to a buried weak layer (Nov 23 Surface Hoar/ Crust) now down +100cm. It consists of surface hoar at treeline and below, and a crust on steep solar aspects into the alpine.
Up to 40 cm of unconsolidated new snow could cause significant sluffing in entrained ice climbing features.
New soft windslabs have formed in the lee areas. The distribution at treeline is more isolated.
30-50 cm of recent snow accompanied by strong SW winds have formed a storm slab in many open areas at treeline and in the alpine. Human triggering of this slab will remain likely on Sunday though natural avalanche activity will slow down.
In many places the snowpack structure under the new snow is weak, consisting of facets and depth hoar. If an avalanche is triggered it has potential to scrub down to these deeper layers resulting in larger avalanches.
30-50 cm of recent snow accompanied by strong SW winds have formed a storm slab in many open areas at treeline and in the alpine. Human triggering of this slab will remain likely on Sunday though natural avalanche activity will slow down.
The snowpack structure under the new snow is weak, consisting of facets and depth hoar. If an avalanche is triggered it has potential to scrub down to these deeper layers resulting in larger avalanches.
40cm of recent storm snow has formed a slab. The new snow sits over Surface Hoar in some locations.
Storm slabs have the potential to step down to a buried weak layer (Nov 23 Surface Hoar/ Crust) now down 80-100+cm. It consists of surface hoar at treeline and below, and a crust on steep solar aspects into the alpine.
40-60 cm of recent snow and wind have formed a storm slab in many open areas at treeline and in the alpine. Human triggering of this slab will remain likely though natural avalanche activity will slow down.
As of today, large avalanches were reported as initiating on the Nov crust/facet layer and stepping down and gouging to near ground. Some were triggered with large loads (explosives) and one was triggered by a snowboarder on an adventure.
Increasing westerly winds will continue to build slabs at treeline and in the alpine. Though natural activity will taper off as the week progresses, these are expected to be reactive to skier traffic.
40-60 cm of recent snow and wind have formed a storm slab in many open areas at treeline and in the alpine. Human triggering of this slab will remain likely though natural avalanche activity will slow down.
As of today, large avalanches were reported as initiating on the Nov crust/facet layer and stepping down and gouging to near ground. Some were triggered with large loads (explosives) and one was triggered by a snowboarder on an adventure.
Wind slabs are forming on lee slopes and cross loaded features
Specific to steep terrain. Ice climbers should pay particular attention to this
The November 23rd layer is down 80-100+cm and consists of surface hoar at treeline and below, and a crust on steep solar aspects into the alpine.
Recent periods of moderate wind have potentially built wind slabs in immediate lees.&nbsp; Keep an eye out for these as you transition into exposed alpine terrain.
Increasing westerly winds will continue to build slabs in lee areas at treeline and in the alpine.
A combination of melt freeze crusts and facets from early season snowfalls is lurking at the bottom of the snowpack. These layers are unlikely to be triggered by people but smaller avalanches in the recent storm snow have been stepping down.
Wind slabs are present on lee slopes and cross-loaded features
Specific to steep terrain. Ice climbers should pay particular attention to this as entrenched loose snow may have the volume to knock climbers off their stance.
Recent snow and wind have formed a storm slab in many open areas at treeline and in the alpine. Human triggering of this slab remains possible or even likely in some terrain, though natural avalanche activity has slowed down.
The recent snow sits over weak facet and crust layers. Numerous natural and explosive triggered avalanches up to size 3 have been observed on these weak lower layers in the past several days. Human triggering in steep terrain remains a real concern.
Recent snow and wind have formed a storm slab in many open areas at treeline and in the alpine. Human triggering of this slab remains possible or even likely in some terrain, though natural avalanche activity has slowed down.
The recent snow sits over weak facet and crust layers in many places. Human triggering in steep terrain remains a real concern, especially in thinner snowpack areas. This problem will be less of a concern in thicker snowpack areas.
The November 23rd layer is down 80-100+cm and consists of surface hoar at treeline and below, and a crust on steep solar aspects into the alpine.
Recent periods of moderate wind have potentially built wind slabs in immediate lees. Keep an eye out for these as you transition into exposed alpine terrain.
Wind slabs are present on lee slopes and cross-loaded features
Specific to steep terrain. Ice climbers should pay particular attention to this as entrenched loose snow may have the volume to knock climbers off their stance.
Recent snow and wind have formed reactive wind in many open areas at treeline and in the alpine. Human triggering of this slab remains possible or even likely in some terrain, though natural avalanche activity has slowed down. 
The recent snow sits over weak facet and crust layers. Numerous natural and explosive triggered avalanches up to size 3 have been observed on these weak lower layers in the past several days. Human triggering in steep terrain remains a real concern.
Recent snow and wind have formed reactive wind in many open areas at treeline and in the alpine. Human triggering of this slab remains possible or even likely in some terrain, though natural avalanche activity has slowed down.
The recent snow sits over weak facet and crust layers. Numerous natural and explosive triggered avalanches up to size 3 have been observed on these weak lower layers in the past several days. Human triggering in steep terrain remains a real concern.
The November 23rd layer is down 80-100+cm and consists of surface hoar at treeline and below, and a crust on steep solar aspects into the alpine.
Recent periods of moderate wind have potentially built wind slabs in immediate lees. Keep an eye out for these as you transition into exposed alpine terrain.
Recent snow and wind have formed reactive wind in many open areas at alpine elevations. Human triggering of this slab remains possible or even likely in some terrain, though natural avalanche activity has slowed down.
The recent snow sits over weak facet and crust layers in some areas of the forecast region.&nbsp; Human triggering in steep terrain remains a concern.
Recent snow and wind have formed wind slab in many open areas at treeline and in the alpine. Human triggering of this slab remains possible or even likely in some terrain, though natural avalanche activity has slowed down.
The recent snow sits over weak facet and crust layers. Numerous natural and explosive triggered avalanches up to size 3 have been observed on these weak lower layers in the past several days.
The November 23rd layer consists of surface hoar at and below treeline and a crust on steep solar aspects into the alpine. This layer can be found down 80-100cm.
Recent S-SW winds have formed windslab in the immediate lee of alpine terrain features. Light overnight storm snow will have obscured these slabs.
Strong to extreme winds have stripped fetches in the alpine, and new wind slabs exist at treeline and above. These will begin to settle as the weekend progresses.
Melt freeze crusts and facets from early season snowfalls are lurking at the bottom of the snowpack. Windslabs have been stepping down to this layer, and it may be possible for a person to trigger an avalanche in the right (wrong?) spot.
Strong alpine winds in the last 24 hours have increased wind slab thickness and likely their reactivity in many open areas in the alpine and some treeline features. Watch locally for their development as it has not been windy everywhere.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Strong alpine winds in the last 24 hours have increased wind slab thickness and likely their reactivity in many open areas in the alpine and some treeline features. Watch locally for their development as it has not been windy everywhere.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Wind slabs are present on lee slopes and cross-loaded features
Specific to steep terrain. Ice climbers should pay particular attention to this as entrenched loose snow may have the volume to knock climbers off their stance.
Wind slabs are present on lee slopes and cross-loaded features
Specific to steep terrain. Ice climbers should pay particular attention to this as entrenched loose snow may have the volume to knock climbers off their stance. Solar input has the potential to trigger this problem.
The November 23rd layer consists of surface hoar at and below treeline and a crust on steep solar aspects into the alpine. This layer can be found down +/-100cm.
Recent S-SW winds have formed windslab in the immediate lee of alpine terrain features. The last 24hrs storm snow will have obscured these slabs.
The widespread Dec 11 surface hoar is now buried down 10cm+. Surface snow will be prone to sluffing fast and far on this layer. This may be an issue in gully or terrain trap features.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Variable wind slab development over the last couple of days mainly in the alpine but also in some wind exposed treeline features. These are losing sensitivity to human triggering but will need a few days to settle out completely.
The recent snow sits over weak facet and crust layers. Where they exist it will be hard to predict what it will take to cause an avalanche. The Takakkaw Falls area is the only place so far where these haven't been found due to a deeper snowpack.
Variable wind slab development over the last couple of days mainly in the alpine but also in some wind exposed treeline features. These are losing sensitivity to human triggering but will need a few days to settle out completely.
Wind slabs are present on lee slopes and cross-loaded features
Specific to steep terrain. Ice climbers should pay particular attention to this as entrenched loose snow may have the volume to knock climbers off their stance. Solar input has the potential to trigger this problem.
The November 23rd layer consists of surface hoar at and below treeline and a crust on steep solar aspects into the alpine. This layer can be found down +/-100cm.
The widespread Dec 11 surface hoar is now buried down 10cm+. Surface snow will be prone to sluffing fast and far on this layer. This may be an issue in gully or terrain trap features.
Up to 15cm of new snow since Dec 11th with light to very light southerly wind.  Expect touchy pockets of storm slab in wind exposed features.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Variable wind slab development from two days ago persists, mainly in the alpine but also in some wind exposed treeline features. These are losing sensitivity to human triggering but will need a few days to settle out completely.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Variable wind slab development from two days ago persists, mainly in the alpine but also in some wind exposed treeline features. These are losing sensitivity to human triggering but will need a few days to settle out completely.
Specific to steep terrain. Ice climbers should pay particular attention to this as entrenched loose snow may have the volume to knock climbers off their stance. Solar input has the potential to trigger this problem.
Previous wind slabs may be sitting over a basal weakness
Up to 20 cm of new snow since Dec 11th with light to very light southerly wind. Expect touchy pockets of storm slab in wind exposed features.
Surface snow will be prone to sluffing.
A few large avalanches were observed during last cycle early in December and we suspect it was on this layer.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Variable wind slab development can be found mainly in the alpine but also in some wind exposed treeline features. These are losing sensitivity to human triggering but will need a few days to settle out completely.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Variable wind slab development is present mainly in the alpine but also in some wind exposed treeline features. These are losing sensitivity to human triggering but will need a few days to settle out completely.
Up to 20 cm of new snow since Dec 11th with light to moderate southerly wind. Expect reactive pockets of storm slab in wind exposed features.
Surface snow will be prone to sluffing, especially on steep, unsupported aspects.
Overnight wind transport has created thin wind slabs predominantly on East aspects directly below ridge top. Pay attention to wind values and new snow amounts that contribute to this problem over the next 24 hours.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Strong SW winds have likely created wind slab in NW to SE lee aspects. Sensitivity expected to be reactive in the immediate future and might be enough to wake deep, weaker interfaces.
A few large avalanches were observed during last cycle early in December and we suspect it was on this layer.
Overnight wind transport has created thin wind slabs predominantly on East aspects directly below ridge top. Pay attention to wind values and new snow amounts that contribute to this problem over the next 24 hours.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Strong to extreme winds have stripped fetches in the alpine, leaving very little snow available for transport. Newer wind slabs exist at treeline and below, especially in burnt areas.
Melt freeze crusts and facets from early season snowfalls are lurking at the bottom of the snowpack. Test results and previous avalanches lead us to believe human triggering of this layer is unlikely, but not out of the question.
Up to 40 cm of new snow since Dec 11th with increasing SW winds. Expect a reactive storm slab in wind exposed features.
Surface snow will be prone to sluffing, especially on steep, unsupported aspects. Sluffs are running fast and far, picking up more snow as it flows down gullies.
Strong SW winds are creating wind slabs in NW to SE lee aspects. Sensitivity expected to be reactive in the immediate future and might be enough to wake deep, weaker interfaces.
A few large avalanches were observed during last cycle early in December and we suspect it was on this layer. Triggering the windslab problem has potential to release this lower problem layer.
Strong wind values Tuesday have created thin wind slabs predominantly on East aspects directly below ridge top. Expect the new load to be reactive to light loads for the near future.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Sustained strong winds Tuesday have formed new wind slabs at alpine and tree line elevations. The distribution of the new load is uncertain. Where it is present you can expect the new load to be reactive in the short term.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Storm slabs are primed for human-triggering on steep unsupported terrain features. Storm slabs overlie the Dec 11th surface hoar layer, which can be found 50-60cm below the surface.
Surface snow will be prone to sluffing, especially on steep, unsupported terrain features. Sluffs are running fast and far, picking up more snow as it flows down gullies.
48 hrs of moderate to strong&nbsp; winds have formed new wind slabs at alpine and tree line elevations. The distribution of the new load is uncertain. Where it is present you can expect the new load to be reactive in the short term.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Strong SW winds are creating wind slabs in NW to SE lee aspects. Sensitivity expected to be reactive in the immediate future and may wake deeper, weaker interfaces.
A few large avalanches were observed during last cycle early in December and we suspect it was on this layer. Triggering the windslab problem has potential to release this lower problem layer.
Strong wind values Tuesday have created thin wind slabs predominantly on East aspects directly below ridge top. Expect the new load to be reactive to light loads for the near future.
The recent snow sits over weak facet and crust layers. As time goes on the chance of triggering is becoming less likely, but there is lots of uncertainty as to where you could trigger an avalanche and what it will take to get it moving.
Storm slabs are primed for human-triggering on steep unsupported terrain features. Storm slabs may step down to the Dec 11th surface hoar layer, which can be found 60-70cm below the surface.
70cm+ of storm snow covers the widespread Dec 11th Surface Hoar(SH), size 5-12mm. This sliding layer is expected to wake up tomorrow naturally, but is still probable for human triggering today.
As the storm intensifies on Friday, expect the incoming snow and strong South West winds to build touchy wind slabs on lee aspects in the alpine and exposed areas at tree line.
As the snow accumulates, expect sluffing and point releases from steep, rocky terrain and gullies.
The incoming storm snow will stress the weak, faceted snowpack. Lots of uncertainty surrounds this layer, but if triggered it could result in a large avalanche.
1681A555">As the storm intensifies on Friday, expect the incoming snow and strong South West winds to build touchy wind slabs on lee aspects in the alpine and exposed areas at tree line.
1681A555">As the snow accumulates, expect sluffing and point releases from steep, rocky terrain and gullies.
1681A555">The incoming storm snow will stress the weak, faceted snowpack. Lots of uncertainty surrounds this layer, but if triggered it could result in a large avalanche.
The incoming storm will bring heavy snowfall accompanied by 140km/h+ southwest winds and rain at lower elevations. Avalanche activity will peak on Friday and Saturday.
Melt freeze crusts and facets from early season snowfalls are lurking at the bottom of the snowpack. This layer may come alive again with loading form the incoming storm.
Strong SW winds are creating wind slabs in NW to SE lee aspects. Sensitivity expected to be reactive in the immediate future and may wake deeper, weaker interfaces.
A few large avalanches were observed during last cycle early in December and we suspect it was on this layer. Triggering the windslab problem has potential to release this lower problem layer.
As new snow accumulates, the hazard will increase.
A touchy storm slab formed Dec 19 over a Stellar layer down 30cm. This layer is expected to be widespread and sensitive to human triggering.
The Dec 11th Surface Hoar(SH), size 5-12mm is down 80cm+. This sliding layer is expected to wake up tomorrow naturally when storm slab releases overload it. This will result in large avalanches likely running to valley bottom.
The Nov 15 melt freeze crust is down deep in the snowpack. This layer may reach threshold for overload from avalanches triggered in upper snowpack layers. The resulting avalanches will be large.
A touchy storm slab is forming and will become more sensitive to human triggering as the storm continues on Saturday.
As the snow accumulates, expect sluffing and point releases from steep, rocky terrain and gullies.
The weak, faceted mid and lower pack is being stressed by the new storm snow and might be reaching threshold. Lots of uncertainty surrounds this layer, but if triggered it would result in a large avalanche.
A touchy storm slab is forming and will become more sensitive to human triggering as the storm continues on Saturday.
As the snow accumulates, expect sluffing and point releases from steep, rocky terrain and gullies.
The weak, faceted mid and lower snowpack is being stressed by the new storm snow and might be reaching threshold. Lots of uncertainty surrounds this layer, but if triggered it would result in a large avalanche.
The atmospheric river continues to bring heavy snowfall accompanied by 120km/h southwest winds and rain below 1700m. Snowfall amounts are uncertain on Saturday, but winds will be strong and freezing levels will remain high.
Melt freeze crusts and facets from early season snowfalls are lurking at the bottom of the snowpack. This layer may come alive again with loading form the incoming storm.
As new snow accumulates, Expect the hazard to increase.
Continued S-SW winds are creating wind slabs in NW to SE lee aspects. Sensitivity expected to be reactive in the immediate future and may wake deeper, weaker interfaces.
Triggering the windslab problem has potential to step down to this layer.
Warming temperatures are aiding in the formation of a touchy storm slab. This layer is expected to be widespread and sensitive to human triggering.
The Dec 11th Surface Hoar(SH), size 5-12mm is down 100cm+. This sliding layer was reactive in our control yesterday when overloaded by storm slab release. Large avalanches will be running to valley bottom.
The Nov 15 melt freeze crust is down deep in the snowpack. This layer may reach threshold for overload from avalanches triggered in upper snowpack layers. The resulting avalanches will be large.
Storm slabs will be everywhere and will remain reactive while the snowpack adjusts to the new load.
The weak, faceted mid and lower pack is overloaded by the new storm snow at all elevations.&nbsp; Lots of uncertainty surrounds this layer, but if triggered it would result in a large avalanche.&nbsp;
In the short term this will be a problem, especially in gully features and off of sidewalls.
Storm slabs will be everywhere and will remain reactive while the snowpack adjusts to the new load.
The weak, faceted mid and lower pack is overloaded by the new storm snow at all elevations. Lots of uncertainty surrounds this layer, but if triggered it would result in a large avalanche.
In the short term this will be a problem, especially in gully features and off of sidewalls.
Up to 100cms of new snow has fallen in the last 48 hours. Expect many soft slab avalanches on all aspects and elevations up to size 3 Sunday
A significant amount of snow has accumulated on steep features
Dry loose and storm slab avalanches may step down to weak layers close to the ground producing large avalanches
Continued snowfall accompanied by 120km/h southwest winds has formed touchy slabs
Recent Rain, snow and warm temperatures has begun to overload melt freeze crusts and facets from early season snowfalls causing large avalanches.
Solar input today could initiate another large natural avalanche cycle! Storm slabs are expected to be widespread and sensitive to human triggering.
The Dec 11th Surface Hoar(SH), size 5-12mm is down 90cm+. This sliding layer was reactive in our control yesterday. Large avalanches will reach valley bottom.
The Nov 23 melt freeze crust is down deep in the snowpack. This layer may reach threshold for overload from avalanches triggered in upper snowpack layers or a large cornice release. The resulting avalanches will be very large.
Expect many soft slab avalanches on all aspects and elevations up to size 3 Sunday
Steep features
Dry loose and storm slab avalanches may step down to weak layers close to the ground producing large avalanches
Storm slabs continue to be reactive Sunday. Were seeing widespread avalanche activity releasing from this new load. As the storm snow settles over the next few days natural activity will lessen. Human triggering likely persist for much longer.
The weak, faceted mid and lower pack is overloaded by the new storm snow at all elevations. Avoid exposer to any large overheads hazard.
In the short term this will be a problem, especially in gully features and off of sidewalls.
Storm slabs continue to be reactive Sunday. Were seeing widespread avalanche activity releasing from this new load. As the storm snow settles over the next few days natural activity will lessen. Human triggering likely persist for much longer.
The weak, faceted mid and lower pack is overloaded by the new storm snow at all elevations. Avoid exposer to any large overheads hazard.
In the short term this will be a problem, especially in gully features and off of sidewalls.
Storm slabs are expected to be widespread and sensitive to human triggering, especially in areas where avalanches have not yet occurred after this weekend's storm.
The Dec 11th Surface Hoar(SH), size 5-12mm is down 90cm+. This sliding layer was reactive in our artillery control over the weekend. Large avalanches will reach valley bottom.
Storm slabs continue to be reactive Monday. We are seeing widespread avalanche activity releasing from this new load. As the storm snow settles over the next few days natural activity will lessen. Human triggering likely persist for much longer.
The weak, faceted mid and lower pack is overloaded by the new storm snow at all elevations. Avoid exposure to any large overhead hazard.
Surprising little avalanche activity on this layer. Uncertainty related to how sensitive this problem will be to human triggers
A significant amount of snow has accumulated on steep features
Wind slabs will be thicker and more reactive the higher you go. Snow amounts change dramatically above 1800m.
As natural activity on this layer begins to slow down, it is tempting to believe the problem has passed. This layer could still be triggered in thin areas, or by large triggers including cornices or smaller avalanches.
Storm slabs continue to be reactive Monday. We are seeing widespread avalanche activity releasing from this new load. As the storm snow settles over the next few days natural activity will lessen. Human triggering likely persist for much longer.
The weak, faceted mid and lower pack is overloaded by the new storm snow at all elevations. Avoid exposure to any large overhead hazard.
We're 2 days out from the last lashing of the storm and the storm snow remains reactive. Slab formation has been kept at bay by cold temperatures and light winds, but this snow can be triggered on convexities, cross loaded slopes and near ridgelines.
The Dec 11th Surface Hoar(SH), size 5-12mm is down approximately 1m. Try to find this layer in your snow profile today; it is very recognizable. Most of the large natural avalanches that are currently visible in the backcountry slid on this layer.
As natural activity on this layer begins to slow down, it is tempting to believe the problem has passed. This layer could still be triggered by people in thinner snowpack areas, or by large triggers including cornices or smaller avalanches.
Wind slabs will be thicker and more reactive the higher you go. Snow amounts change dramatically above 1800m.
Surprising little avalanche activity on this layer.
A significant amount of snow has accumulated on all features
Storm slabs continue to be reactive. Natural activity has lessened but the likelihood of triggering an avalanche is high.
The weak, faceted mid and lower pack is overloaded by the new storm snow at all elevations. If you trigger the deep facets it will result in a very large avalanche.
Storm slabs continue to be reactive. Natural activity has lessened but the likelihood of triggering an avalanche is high.
The weak, faceted mid and lower pack is overloaded by the new storm snow at all elevations. If you trigger the deep facets it will result in a very large avalanche.
Last weekend's storm saw huge avalanches running on the December 11th surface hoar. As the storm snow morphs into slabs, this layer gets re-primed. A 100cm slab atop well-preserved large surface hoar is a recipe for HUMAN TRIGGERED avalanches.
Storm slabs continue to be reactive. Natural activity has lessened but the likelihood of triggering an avalanche is high.
The weak, faceted mid and lower pack is overloaded by the new storm snow at all elevations. If you trigger the deep facets it will result in a very large avalanche.
New snow has stuck to and accumulated on all features, heavy sluffing remains a problem for both riders and climbers
Storm slabs continue to be reactive. Natural activity has lessened but the likelihood of triggering an avalanche is high.
The weak, faceted mid and lower pack is overloaded by the new storm snow at all elevations. If you trigger the deep facets it will result in a very large avalanche.
We are entering a period of lower probability of triggering a slab, but a high consequence if you do. A 100cm slab sits on well-preserved, large surface hoar. This is a recipe for HUMAN-TRIGGERED avalanches.
The first bit of wind after the storm on Dec 21, fresh wind slabs were noted building today
New snow has stuck to and accumulated on all features, caution in terrain traps while approaching climbing routes.
With 30-60cm of storm snow available for transport accompanied by the moderate to strong SW winds, expect fresh wind slab formation in the alpine and exposed areas at tree line.
The weak, faceted lower snowpack remains stressed by the new storm snow at all elevations. If triggered the deep facets it will result in a very large avalanche.
With 30-60cm of storm snow available for transport accompanied by the moderate to strong SW winds, expect fresh wind slab formation in the alpine and exposed areas at tree line.
The weak, faceted lower snowpack remains stressed by the new storm snow at all elevations. If triggered the deep facets it will result in a very large avalanche.
We are entering a period of lower probability of triggering a slab, but a high consequence if you do. A 100cm slab sits on well-preserved, large surface hoar. This is a recipe for HUMAN-TRIGGERED avalanches.
As natural activity on this layer begins to slow down, it is tempting to believe the problem has passed. This layer could still be triggered by people in thinner snowpack areas, or by large triggers including cornices or smaller avalanches.
Wind slabs will be thicker and more reactive the higher you go. Snow amounts increase dramatically above 1800m.
The first bit of wind after the storm on Dec 21, fresh wind slabs were noted building today
Caution Ice climbers in confined features with steep walls holding dry loose snow
The weak, faceted lower snowpack remains stressed by the new storm snow at all elevations. If triggered the deep facets it will result in a very large avalanche. Reports of whumphing on the basal layer continue.
With 30-60cm of storm snow available for transport accompanied by the moderate to strong SW winds, expect fresh wind slab formation in the alpine and exposed areas at tree line.
The weak, faceted lower snowpack remains stressed by the new storm snow at all elevations. If triggered the deep facets it will result in a very large avalanche. Reports of whumphing on the basal layer continue.
With 30-60cm of storm snow available for transport accompanied by the moderate to strong SW winds, expect fresh wind slab formation in the alpine and exposed areas at tree line.
15cm of low density new snow and moderate S-SW winds have formed slabs in alpine lees.
The surface hoar layer down a meter is well preserved in some areas. If triggered this will result in a large avalanche. This consequences are high if this low probability problem is encountered.
The weak, faceted lower snowpack remains stressed by the new storm snow at all elevations. If triggered the deep facets it will result in a very large avalanche. Reports of whumphfing on the basal layer continue as recent as Friday.
Wind effect is evident in the alpine along the divide with areas such as the Wapta looking hammered . While much of treeline seems to have been spared, it would be wise to expect to find slabs in more exposed areas there too.
SW moderate winds continue to develop windslab on lee slopes.
Whumphing observed on this weakness observed below treeline.  Large loads may trigger it.
Caution Ice climbers in confined features with steep walls holding dry loose snow
The weak, faceted lower snowpack remains stressed by the new storm snow at all elevations. If triggered the deep facets it will result in a very large avalanche. Reports of whumphfing on the basal layer continue as recent as Friday.
Wind effect is evident in the alpine along the divide with areas such as the Wapta looking hammered . While much of treeline seems to have been spared, it would be wise to expect to find slabs in more exposed areas there too.
15cm of recent snow with moderate S-SW winds have formed slabs in alpine lees. Be alert for cross-loaded features and terrain traps.
The surface hoar layer down a meter is well preserved in some areas and human triggering remains possible. Due to the depth of this layer the resulting avalanche would be large.
Most fetch zones are stripped and snow has been redistributed to lee slopes and cross-loaded gulleys.  Triggering is likely from shallow spots. Once triggered, the avalanche could awaken weaknesses at the base of the pack creating large avalanches.
Whumphing was observed on this weakness below treeline.  This weakness could be triggered by large loads or from thin spots in the snowpack.
The weak, faceted lower snowpack was heavily loaded by the storm before Christmas . Triggering the deep facets would result in a very large avalanche. Continued reports of whumphfing on these basal layers indicate the potential for human triggering.
Wind effect is evident in the alpine as a result of winds over the previous 3-4 days. Be wary of the potential to trigger even a small slab given the possibility of triggering the deeper weakness as an avalanche starts to increase the load on a slope
The weak, faceted lower snowpack was heavily loaded by the storm before Christmas . Triggering the deep facets would result in a very large avalanche. Continued reports of whumphfing on these basal layers indicate the potential for human triggering.
Wind effect is evident in the alpine as a result of winds over the previous 3-4 days.Be wary of the potential to trigger even a small slab given the possibility of triggering the deeper weakness as an avalanche starts to increase the load on a slope
The windslabs formed last week have not been reactive to skier traffic recently, but increasing winds this afternoon may build fresh windslabs. 
The surface hoar layer down a meter is well preserved in some areas and human triggering remains possible. Due to the depth of this layer the resulting avalanche would be large.
The November facet/ melt freeze crust combo still lurks near the base of the snowpack. This layer could still be triggered by people in thinner snowpack areas, or by large triggers including cornices or smaller avalanches.
Wind slabs will be thicker and more reactive the higher you go.
Moderate to strong winds and new snow over the next couple days will build wind slabs in lee areas at treeline and above. These will be easy to trigger so avoid lee loaded areas and minimize your time in areas with wind loading going on above you.
Continued reports of whumphfing on the weak, faceted lower snowpack indicate the potential for human triggering. This likelihood will rise with new snow and wind over the next few days. Triggering the deep facets could result in a large avalanche.
Moderate to strong winds and new snow over the next couple days will build wind slabs in lee areas at treeline and above. These will be easy to trigger so avoid lee loaded areas and minimize your time in areas with wind loading going on above you.
Continued reports of whumphfing on the weak, faceted lower snowpack indicate the potential for human triggering. This likelihood will rise with new snow and wind over the next few days. Triggering the deep facets could result in a large avalanche.
Storm slabs will become touchy this afternoon as the storm deposits 30cm today. The new snow will be accompanied by moderate to strong wind and rising temperatures. Natural activity will peak this afternoon!
The surface hoar layer down a meter is well preserved in some areas and human triggering remains possible. Due to the depth of this layer the resulting avalanche would be large.
Most fetch zones are stripped and snow has been redistributed to lee slopes and cross-loaded gulleys. If triggered, the avalanche could awaken weaknesses at the base of the pack creating large avalanches.
This weakness could be triggered by large loads or from thin spots in the snowpack.&nbsp; This problem seems more pronounced at treeline where whumphing and cracks have been observed.
Moderate to strong winds and new snow over the next couple days will build wind slabs in lee areas at treeline and above. These will be easy to trigger so avoid lee loaded areas and minimize your time in areas with wind loading going on above you.
Continued reports of whumphing on the weak, faceted lower snowpack indicate the potential for human triggering. This likelihood will rise with new snow and wind over the next few days. Triggering the deep facets could result in a large avalanche.
Fresh Windslabs reactive to ski cuts at ridge top today at cameron lakes. Warming temperatures wednesday will make Windslabs easier to trigger
The November facet/ melt freeze crust combo still lurks near the base of the snowpack. This layer could still be triggered by people in thinner snowpack areas, or by large triggers including cornices or smaller avalanches.
Moderate to strong winds and new snow over the next couple days will build wind slabs in lee areas at treeline and above. These will be easy to trigger so avoid lee loaded areas and minimize your time in areas with wind loading going on above you.
Continued reports of whumphing on the weak, faceted lower snowpack indicate the potential for human triggering. This likelihood will rise with new snow and wind over the next few days. Triggering the deep facets could result in a large avalanche.
As the new snow forms a cohesive slab on top of the Dec 27th surface hoar, expect to see reactive slabs pulling back onto lower angled terrain.&nbsp;
The surface hoar layer down a meter is still preserved in some areas and human triggering remains possible. Due to the depth of this layer, the resulting avalanche would be large.
5 to 10cm of new snow and light to moderate NW wind has created soft windslabs in lee areas in the alpine. While they are reactive to ski cutting, they are thin and do not run far. Underlying hard windslabs from a previous wind event also linger.
Continued reports of whumphing on the weak, faceted lower snowpack indicate the potential for human triggering. This likelihood will rise with new snow and wind over the next few days. Triggering the deep facets could result in a large avalanche.
5 to 10cm of new snow and light to moderate NW wind has created soft windslabs in lee areas in the alpine. While they are reactive to ski cutting, they are thin and do not run far. Underlying hard windslabs from a previous wind event also linger.
Continued reports of whumphing on the weak, faceted lower snowpack indicate the potential for human triggering. This likelihood will rise with new snow and wind over the next few days. Triggering the deep facets could result in a large avalanche.
Most fetch zones are stripped and snow has been redistributed to lee slopes and cross-loaded gulleys. If triggered, the avalanche could awaken weaknesses at the base of the pack creating large avalanches.
This weakness could be triggered by large loads or from thin spots in the snowpack. This problem seems more pronounced at treeline where whumphing and cracks have been observed.
At Treeline we have received 50cm+ of storm snow in the last 36 hours! Winds increased in the overnight period to strong out of the south, but temperatures are cooling. Natural activity has decreased, but human triggering remains likely.
Storm slabs have the potential to step down to our Persistent Weak Layer problems (December 11th and 27th Surface Hoar). The 27th is buried by our most recent storm snow and the Dec 11th layer is now buried well over a meter.
An avalanche initiated in this storm snow may step down and test our deeper weak layers
This weakness could be triggered by large loads or from thin spots in the snowpack. This problem seems more pronounced at treeline where whumphing and cracks have been observed.
Warm temperatures Friday and Saturday will make Windslabs easier to trigger. BTL rating on Saturday reflects potential for avalanches to run full path.
The November facet/ melt freeze crust combo still lurks near the base of the snowpack. This layer could still be triggered by people in thinner snowpack areas, or by large triggers including cornices or smaller avalanches.
20-50 deep reactive wind slabs propagating 15-30 m wide. Heightened caution at treeline where new snow will load buried surface hoar in sheltered locations or sun crust on steep solar.
Continued reports of whumphing on the weak, faceted lower snowpack indicate the potential for human triggering. This likelihood will rise with new snow and wind over the next few days. Triggering the deep facets could result in a large avalanche.
A problem primarily in steep gully features due to the ongoing wind and new snow forecasted. Ice climbers consider the overhead hazard and the possibility of windslabs being triggered by loose dry.
20-50 deep reactive wind slabs propagating 15-30 m wide. Heightened caution at treeline where new snow will load buried surface hoar in sheltered locations or sun crust on steep solar.
Continued reports of whumphing on the weak, faceted lower snowpack indicate the potential for human triggering. This likelihood will rise with new snow and wind over the next few days. Triggering the deep facets could result in a large avalanche.
A problem primarily in steep gully features due to the ongoing wind and new snow forecasted. Ice climbers consider the overhead hazard and the possibility of windslabs being triggered by loose dry.
60cm of storm snow this week have created slabs on all aspects. Rising temperatures today will increase reactivity. Strong SW winds will make for deeper slabs in alpine and treeline lees. Large paths have the potential to run below treeline.
Storm slabs have the potential to step down to the December 27th or 11th surface hoar. The 27th is down 60cm and the Dec 11th layer is now buried well over a meter.
The 20-40cm of storm snow is being redistributed by the strong Westerly winds and settling into a storm slab. Heightened caution at treeline where new snow has buried surface hoar in sheltered locations or sun crust on steep solar.
Continued reports of whumphing on the weak, faceted lower snowpack indicate the potential for human triggering. This likelihood will rise with new snow and wind over the next few days. Triggering the deep facets could result in a large avalanche.
A problem primarily in steep gully features due to the ongoing wind and new snow forecasted. Ice climbers consider the overhead hazard and the possibility of windslabs being triggered by loose dry.
The 20-40cm of storm snow is being redistributed by the strong Westerly winds and settling into a storm slab. Heightened caution at tree line where new snow has buried surface hoar in sheltered locations or sun crust on steep solar.
Continued reports of whumphing on the weak, faceted lower snowpack indicate the potential for human triggering. This likelihood will rise with new snow and wind over the next few days. Triggering the deep facets could result in a large avalanche.
A problem primarily in steep gully features due to the ongoing wind and new snow forecasted. Ice climbers consider the overhead hazard and the possibility of storm slabs being triggered by loose dry.
This storm has come in with strong to extreme winds from the southwest.
This weakness could be triggered by large loads or from thin spots in the snowpack. This problem seems more pronounced at treeline where whumphing and cracks have been observed.
60cm of storm snow this week have created slabs on all aspects. Rising temperatures and strong SW winds will make for deeper slabs in alpine and treeline lees. Large paths have the potential to run below treeline.
Storm slabs have the potential to step down to the December 27th or 11th surface hoar. The 27th is down 60cm and the Dec 11th layer is now buried well over a meter.
This storm has come in with strong to extreme winds from the southwest. Moderate winds continue on Saturday.
This weakness could be triggered by large loads or from thin spots in the snowpack. This problem is more pronounced at treeline where whumphing and cracks have been observed.
The zone has received up to 40-50cm. Caution in steep gullies and terrain traps where a small sluff could have large consequences. Avoid terrain where this problem can initiate slab avalanches on deeper layers.
The 20-40cm of storm snow has been accompanied by strong Westerly winds. Thick slabs in the lees of alpine and treeline features are likely forming due to the winds, and lower down the snow is settling into a slab.
Lots of uncertainty surrounding this layer and what will trigger it with all of the new inputs of snow, wind and warm temperatures. Triggering the deep facets could result in a large avalanche.
While the wind stays elevated loose dry avalanches will be a problem in gully features.
The 20-40cm of storm snow has been accompanied by strong Westerly winds. Thick slabs in the lees of alpine and treeline features are likely forming due to the winds, and lower down the snow is settling into a slab.
Lots of uncertainty surrounding the distribution of this layer in Little Yoho and what will trigger it with all of the new inputs of snow, wind and warm temperatures.
While the wind stays elevated loose dry avalanches will be a problem in gully features.
Moderate-Extreme SW winds have built fresh slabs in unusual places.  Approach all open terrain with caution. Large paths have the potential to run to valley bottom.
Storm slabs have the potential to step down to the December 27th SH. Which is now buried up to 1m deep.
20-40cm of storm snow has been accompanied by strong SW winds. Thick slabs in the lee of alpine and treeline features can be expected. Be on the look out in sheltered areas TL and below as this snow may be settling into a slab over surface hoar.
We have seen a few examples of these slabs becoming reactive during the storm. These large avalanches reach run out zones. As loading continues over the next few days, avoid exposure to overhead avalanche terrain.
While winds stay elevated and precipitation continues to come in,&nbsp; loose dry avalanches will be a problem in steep terrain.&nbsp; These small events can be enough to trigger a slab on slopes beneath cliffs or on ledges in gully features.
20-40cm of storm snow has been accompanied by strong SW winds. Thick slabs in the lee of alpine and treeline features can be expected. Be on the look out in sheltered areas TL and below as this snow may be settling into a slab over surface hoar.
We have seen a few examples of these slabs becoming reactive during the storm. These large avalanches reach run out zones. As loading continues over the next few days, avoid exposure to overhead avalanche terrain.
While winds stay elevated and precipitation continues to come in,  loose dry avalanches will be a problem in steep terrain.  These small events can be enough to trigger a slab on slopes beneath cliffs or on ledges in gully features.
Widespread wind effect at treeline and above. Consider avoiding terrain which is thin to thick and/or significant overhead wind loaded features.
This weakness could be triggered by large loads or from thin spots in the snowpack. All explosive triggered avalanches today at treeline and below failed on or close to the ground.
Caution in steep gullies and terrain traps where a small sluff could have large consequences. Avoid terrain where this problem can initiate slab avalanches on deeper layers.
Moderate-Extreme S'ly winds have built fresh slabs in unusual places (ie further downslope from ridge). Expect freshly buried slabs- approach all open terrain with caution. Large paths have the potential to run to valley bottom.
Storm slabs have the potential to step down to the December 27th SH, which is now buried up to 1m deep.
An additional 20-40cm of snow Tuesday, Wednesday will add to the previous storm slab problem. At upper elevations this problem could be associated with additional load from moderate to strong winds.
While winds stay elevated and precipitation continues to come in, loose dry avalanches will be a problem in steep terrain. These small events can be enough to trigger a slab on slopes beneath cliffs or on ledges in gully features.
We have seen a few examples of these slabs becoming reactive during the storm. These large avalanches reach run out zones. As loading continues over the next few days, avoid exposure to overhead avalanche terrain.
An additional 20-30cm of snow Tuesday, Wednesday will add to the previous storm slab problem. At upper elevations this problem could be associated with additional load from moderate to strong winds.
While winds stay elevated and precipitation continues to come in, loose dry avalanches will be a problem in steep terrain. These small events can be enough to trigger a slab on slopes beneath cliffs or on ledges in gully features.
We have seen a few examples of these slabs becoming reactive during the storm. These large avalanches reach run out zones. As loading continues over the next few days, avoid exposure to overhead avalanche terrain.
Incoming snow paired with strong to extreme southwest winds will form new slabs at all elevations that will be reactive to human traffic.
The November facet/ melt freeze crust combo still lurks near the base of the snowpack, and is still very much in play with incoming snow. Triggers could include cornices, avalanches in the storm snow, or people in thin snowpack areas.
Widespread wind effect at treeline and above. Consider avoiding terrain which is thin to thick and/or significant overhead wind loaded features.
This weakness could be triggered by large loads or from thin spots in the snowpack. All explosive triggered avalanches today at treeline and below failed on or close to the ground.
Caution in steep gullies and terrain traps where a small sluff could have large consequences. Avoid terrain where this problem can initiate slab avalanches on deeper layers.
20mm of precip forecast today with gusty S winds will build new touchy storm slabs. Expect buried slabs from this past week's snow and extreme S winds. Approach all open terrain with caution. Large paths have the potential to run to valley bottom.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Storm slabs have the potential to step down to the December 27th SH, which is now buried up to 1m deep. See the </span><a href="https://www.avalanche.ca/map?panel=mountain-information-network-submissions/7707db61-94f2-407b-96ca-cc13cae56c48" target="_blank"><span class="s_9255B882">MIN report</span></a><span class="s_AA239A9B"> from yesterday showing reactivity BTL.
An additional 20-30cm of snow Tuesday, Wednesday will add to the previous storm slab problem. At upper elevations this problem could be associated with additional load from moderate to strong winds.
While winds stay elevated and precipitation continues to come in, loose dry avalanches will be a problem in steep terrain. These small events can be enough to trigger a slab on slopes beneath cliffs or on ledges in gully features.
We have seen a few examples of these slabs becoming reactive during the storm. These large avalanches reach run out zones. As loading continues over the next few days, avoid exposure to overhead avalanche terrain.
New snow will bury and could trigger existing wind slabs as well as form new ones at treeline and above. Consider avoiding terrain which is thin to thick and/or significant overhead wind loaded features.
This weakness could be triggered by large loads or from thin spots in the snowpack.
Caution in steep gullies and terrain traps where a small sluff could have large consequences. Avoid terrain where this problem can initiate slab avalanches on deeper layers.
An additional 20-30cm of snow Tuesday, Wednesday will add to the previous storm slab problem. At upper elevations this problem could be associated with additional load from moderate to strong winds.
While winds stay elevated and precipitation continues to come in, loose dry avalanches will be a problem in steep terrain. These small events can be enough to trigger a slab on slopes beneath cliffs or on ledges in gully features.
We have seen a few examples of these slabs becoming reactive during the storm. These large avalanches reach run out zones. As loading continues over the next few days, avoid exposure to overhead avalanche terrain.
70cm of new snow with gusty S winds has created touchy storm slabs. Expect buried slabs from this past week's snow and extreme S winds. Approach all open terrain with caution. Large paths have the potential to run to valley bottom.
Storm slabs have the potential to step down to the December 27th SH, which is now buried over a metre deep.
70cm of new snow has the potential to entrain a lot of mass as it flows downhill.
Wind loading has reached critical mass and we are seeing many avalanches on wind loaded features at all elevations and aspects. Expect this to continue Thursday.
On Wednesday numerous avalanches were observed throughout the region that failed to ground
Caution in steep gullies and terrain traps where a small sluff could have large consequences. Avoid terrain where this problem can initiate slab avalanches on deeper layers.
Recent storm snow and mod to strong winds have created storm and wind slabs in alpine and treeline elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist. If this occurs avalanches will be large and will run to valley bottoms.
Recent snow and winds have created fresh storm and wind slabs in alpine and treeline regions. It will take several days before these instabilities start to settle out.
In areas where there is a weaker lower pack there is still some potential for avalanches to step down into these weaker areas.
The new snow, accompanied by mod/strong SW winds, has created reactive storm slabs in lee alpine and tree-line features. Approach all open terrain with caution. Large paths have the potential to run to valley bottom.
Storm slabs have the potential to step down to the December 27th SH, which is now buried over a metre deep.
Avalanche activity related to wind slabs will taper off Friday but human triggered avalanches are still likely
On Wednesday numerous avalanches were observed throughout the region that failed to ground
Caution in steep gullies and terrain traps where a small sluff could have large consequences. Avoid terrain where this problem can initiate slab avalanches on deeper layers.
Windslabs will create a sensitive bed surface for new snow arriving on the weekend.
The November facet/ melt freeze crust combo still lurks near the base of the snowpack, and is still very much in play with incoming snow. Triggers could include cornices, avalanches in the storm snow, or people in thin snowpack areas.
Recent storm snow and mod to strong winds have created storm and wind slabs in alpine and treeline elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in past 48 hours. Click on Forecast Details tab for more information.
Recent storm snow and mod to strong winds have created storm and wind slabs in alpine and treeline elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist particularly in areas with a shallower snowpack. Several large avalanches have occurred on this layer in past 48 hours. Click on Forecast Details tab for more information.
The new snow, accompanied by mod-strong SW winds has created reactive storm slabs on all aspects. Extra caution in alpine and tree-line lees. Large paths have the potential to run to valley bottom.
Storm slabs have the potential to step down to the December 27th surface hoar which is now buried over a meter deep.
Avalanche activity will taper off Saturday but human triggered avalanches are still likely.
On Wednesday numerous avalanches were observed throughout the region that failed to ground.
Caution in steep gullies and terrain traps where a small sluff could have large consequences. Avoid terrain where this problem can initiate slab avalanches on deeper layers.
Recent storm snow and mod to strong winds have created wind slabs in alpine and treeline elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in past 48 hours. Click on Forecast Details tab for more information.
Recent storm snow and moderate to strong winds have created wind slabs in alpine and tree line elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in past 48 hours. Click on Forecast Details tab for more information.
Moderate to strong SW winds during the snowfall have loaded alpine and treeline lees. Slabs may be more reactive in these areas.
Storm slabs have the potential to step down to the December 27th surface hoar down 70-90cm.
Recent storm snow and mod to strong winds have created wind slabs in alpine and treeline elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in past few days. Click on Forecast Details tab for more information.
Recent storm snow and mod to strong winds have created wind slabs in alpine and treeline elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in the past few days. Click on Forecast Details tab for more information.
Avalanche activity has tapered off but human triggered avalanches are still likely.
On Wednesday, numerous avalanches were observed throughout the region that failed to ground. Activity has tapered off but may be waiting for the human trigger.
Caution in steep gullies and terrain traps where a small sluff could have major consequences. Avoid terrain where this problem could initiate slab avalanches on deeper layers.
Windslabs will will be difficult to spot with new snow arriving on Sunday. Buried windslab will act as a smooth bed surface for dry loose avalanches.
Watch out for fast-moving dry loose avalanches in steep terrain.
Recent light snowfalls now hide the storm slabs created by moderate to strong SW winds and heavy snowfall during last Wednesdays storm. Slabs are likely more reactive in lee areas.
The December 27th surface hoar layer persists down 70-90cm.&nbsp; This layer was responsible for two skier triggered avalanches yesterday, and continues to produce moderate to hard sudden planar results in snowpack tests.
Avalanche activity has tapered off but human triggered avalanches are still likely.
Numerous avalanches were observed throughout the region that failed to ground. Activity has tapered off but may be waiting for the human trigger.
Recent storm snow and moderate to strong winds have created wind slabs in the alpine and at treeline elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in past few days. Click on Forecast Details tab for more information.
Recent storm snow and moderate to strong winds have created wind slabs in the alpine and at treeline elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist although thicker snowpack areas in the region show less development of this weakness. Several large avalanches have occurred on this layer in past few days :see &quot;Forecast Details&quot;.
Moderate winds in the past 24hrs, starting from the NE and switching to S.
The December 27th surface hoar layer persists down 70-90cm. This layer was responsible for two skier triggered avalanches Saturday, and continues to produce hard sudden results in snowpack tests.
Recent storm snow and moderate to strong winds have created wind slabs in the alpine and at treeline elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in past few days. Click on Forecast Details tab for more information.
Numerous avalanches were observed throughout the region that failed to ground. Activity has tapered off but may be waiting for the human trigger.
Be aware of the potential for rapidly developing windslabs due to the availability of cold, dry snow from recent storm. All aspects may be effected as the wind direction is variable through the forecast period.
Watch out for fast-moving dry loose avalanches in steep terrain.
Recent storm snow and moderate to strong winds have created wind slabs in the alpine and at treeline elevations. It will take several days for these instabilities to settle out.
The potential for deeper releases on the basal layers still exist although thicker snowpack areas in the region show less development of this weakness. Several large avalanches have occurred on this layer in past few days :see &quot;Forecast Details&quot;.
Moderate to Strong winds from the South, then switching to the NE built Wind Slabs in the Alpine and exposed areas of Treeline. Cold temperatures have slowed down avalanche initiation rendering the wind slabs stubborn to trigger.
The December 27th surface hoar layer persists down 70-90cm. This layer was responsible for two skier triggered avalanches Saturday, and continues to produce hard sudden results in snowpack tests.
Wind slabs still exist in the alpine and at treeline elevations from incremental snow fall and wind. Pay attention at the local level for new wind slab development.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in past few days. See forecast details.
Wind slabs still exist in the alpine and at treeline elevations from incremental snow fall and wind. Pay attention at the local level for new wind slab development.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in past few days. See forecast details.
Numerous avalanches were observed throughout the region that failed to ground. Activity has tapered off but may be waiting for the human trigger.
Previous Strong winds from many directions formed Wind Slabs at all elevations on specific terrain features. Cold temperatures have slowed down avalanche initiation rendering the wind slabs stubborn to trigger.
The December 27th surface hoar layer persists down 70-90cm. This layer was responsible for two skier triggered avalanches Saturday, and continues to produce hard sudden results in snowpack tests.
The strength of the bridging over the basal weakness will determine it's sensitivity to triggers. Deep penetrating cold has weakened shallow areas and may be more susceptible to triggering and propagation.
Fresh, windslabs are forming in leeward areas from incremental snow fall and wind. These could be brittle and easy to trigger.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in past few days. See forecast details.
Fresh, windslabs are forming in leeward areas from incremental snow fall and wind. These could be brittle and easy to trigger.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in past few days. See forecast details.
Strong winds from many directions formed Wind Slabs at all elevations on specific terrain features. These slabs are now concealed by 10cm of new snow. They are beginning to run naturally and will be easy to trigger by humans in the right spots.
The December 27th surface hoar layer persists down approximately 100cm. This layer is becoming less reactive in stability tests and it is increasingly harder to find in snow profiles, but the potential is still there to get surprised.
Fresh wind slabs are forming in leeward areas from incremental snow fall and wind. These could be brittle and easy to trigger.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in the past week.
Fresh wind slabs are forming in leeward areas from incremental snow fall and wind. These could be brittle and easy to trigger.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in the past week.
New, building wind slab with variable loading depending on location.&nbsp;
The strength of the bridging over the basal weakness will determine it's sensitivity to triggers. Deep penetrating cold has weakened shallow areas and may be more susceptible to triggering and propagation.
Increasing westerly winds will continue to form windslabs in the alpine and treeline. Be aware of the potential for buried windslabs in unexpected places.
Watch out for fast-moving dry loose avalanches in steep terrain, especially if temperatures warm quickly.
Multiple field teams confirmed the presence of easily-triggered soft wind slabs in exposed areas at all elevations. With strong southerly winds overnight, expect this problem to persists today. These slabs can have larger than expected propagation.
The December 27th surface hoar layer persists down approximately 100cm. This layer is becoming less reactive in stability tests and it is increasingly harder to find in snow profiles, but the potential is still there to get surprised.
Wind slabs are forming in leeward areas from recent snowfall and moderate Southerly winds. These could be easy to trigger.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in the past week.
Up to 15cm new snow not bonding well to previous surface. As temps warm expect continued dry loose out of steep terrain.
New wind slabs forming on easterly aspects at ridgetop along with cornice growth. Buried wind slabs on all aspects in the alpine could become more reactive as temperatures warm.
The recent cold weather has promoted facetting and weakening of the snowpack compromising the bridging strength. Potential for triggering these deeper layers could increase as temperatures warm.
Wind slabs are forming in leeward areas from recent snowfall and moderate Southerly winds. These could be easy to trigger.
The potential for deeper releases on the basal layers still exist. Several large avalanches have occurred on this layer in the past week.
Strong westerly winds will continue to form windslabs in the alpine and treeline.
As temperatures warm, the basal facets may become a player again, especially in the relatively shallow front ranges. Consider overhead hazard, the consequence of a small avalanche triggering a deeper slab, and stick to deep well supported terrain.
Multiple field teams confirmed the presence of easily-triggered soft wind slabs in exposed areas at all elevations. Expect this problem to persists today. These slabs can have larger than expected propagation.
The December 27th surface hoar layer persists down approximately 100cm. This layer is becoming less reactive in stability tests and it is increasingly harder to find in snow profiles, but the potential is still there to get surprised.
Reactive wind slabs reported over the last 2 days which will likely continue with the warming temperatures and strong winds.
Only large triggers like cornices have caused the odd slide on the deep facets/depth hoar recently, but it is almost impossible to forecast with any accuracy which avalanche slopes could be triggered. Conservative terrain choice is your best defence.
Up to 15cm new snow not bonding well to previous surface. As temps warm expect continued dry loose sluffs out of steep terrain.
New wind slabs forming on easterly aspects at ridgetop along with cornice growth. Buried wind slabs on all aspects in the alpine could become more reactive as temperatures warm.
The recent cold weather has promoted facetting and weakening of the snowpack compromising the bridging strength. Potential for triggering these deeper layers could increase as temperatures warm.
Reactive wind slabs reported over the last 2 days which will likely continue with the warming temperatures and strong winds.
Thicker snowpack areas in the region may not have this layer present, but where it exists it is hard to predict what will trigger a slope with any accuracy. Dig down to see if it is present, and if so conservative terrain choice is your best defence.
Recent new snow overlies wind stiffened and facetted surfaces, and may be a reactive slab in isolated areas where the wind has stiffened the surface.
The December 27th surface hoar/crust layer persists down approximately 100cm. This layer is becoming less reactive in stability tests and it is increasingly harder to find in snow profiles, but the potential is still there to get surprised.
New wind slabs forming on easterly aspects at ridgetop along with cornice growth. Old and buried wind slabs on all aspects in the alpine could become more reactive as temperatures warm.
The recent cold weather has promoted facetting and weakening of the snowpack compromising the bridging strength. Potential for triggering these deeper layers could increase as temperatures warm.
Up to 15cm new snow may not be bonding well to previous surface. As temps warm, expect continued dry loose sluffs out of steep terrain.
Moderate south westerly winds will continue to form windslabs in the alpine and treeline, especially if we see new snow up high on Tuesday night/Wednesday
As temperatures warm, the basal facets may become a player again, especially in the relatively shallow front ranges. Consider overhead hazard, the consequence of a small avalanche triggering a deeper slab, and stick to deep well supported terrain.
Reactive wind slabs reported over the last 2 days which will likely continue with the warming temperatures and strong winds.
Were beginning to receive reports of increased avalanche activity from the problem (see forecast details for more info) Conservative terrain choice is your best defence.
Reactive wind slabs reported over the last 2 days which will likely continue with the warming temperatures and strong winds.
Were beginning to receive reports of increased avalanche activity from the problem (see forecast details for more info) Conservative terrain choice is your best defence.
Recent new snow overlies wind stiffened and facetted surfaces, and may be a reactive slab in isolated areas where the wind has stiffened the surface.
Cornice failures and wind slabs triggered by wind loading continue to be reported in the area. Minimize exposure to cornices and avoid steep wind loaded terrain until things settle out.
We have seen a few recent avalanches on the deep persistent problem of basal facets and depth hoar, often beginning as wind slabs and then stepping down to the weak base. Conservative terrain choice is your best defence.
Cornice failures and wind slabs triggered by wind loading continue to be reported in the area. Minimize exposure to cornices and avoid steep wind loaded terrain until things settle out.
We have seen a few recent avalanches on the deep persistent problem of basal facets and depth hoar, often beginning as wind slabs and then stepping down to the weak base. Conservative terrain choice is your best defence.
New wind slabs at ridgetop along with cornice growth.
Cold facetting has weakened of the snowpack and compromised the bridging strength. Potential for triggering these deeper layers could increase as temperatures warm.
Recent new snow overlies facetted and/or firm surfaces. Where the wind has stiffened the new snow into a slab, small pockets have the potential to pop out (ridge-tops, immediate lee features, cross-loaded alpine gullies, etc).
Wind slabs were less reactive today, even with explosive control. Isolated pockets of wind still exist in lee areas.&nbsp;
We have seen a few recent avalanches on the deep persistent problem of basal facets and depth hoar, often beginning as wind slabs and then stepping down to the weak base. Conservative terrain choice is your best defence.
Winds have tapered off but wind slabs at ridgetop are present with the previous wind effects.&nbsp;
The likely trigger spot would be from a shallow location. This is a complex problem particularly with our spatial variability across the landscape.
Wind slabs were less reactive today, even with explosive control. Isolated pockets of wind still exist in lee areas.
We have seen a few recent avalanches on the deep persistent problem of basal facets and depth hoar, often beginning as wind slabs and then stepping down to the weak base. Conservative terrain choice is your best defence.
Recent new snow overlies facetted and/or firm surfaces. Overnight SW'ly winds will have built up soft slabs in alpine lee and ridgeline features.
Winds continue to move the snow around particularly&nbsp; at ridgetop. There was allot of previous wind effects as well.
The likely trigger spot would be from a shallow location. This is a complex problem particularly with our spatial variability across the landscape. Large triggers, such as cornice failures, is enough to trigger this deep instability.
Wind slabs have been less reactive, even with explosive control. Isolated pockets of wind still exist in lee areas.
We have seen a few recent avalanches on the deep persistent problem of basal facets and depth hoar, often beginning as wind slabs and then stepping down to the weak base. Conservative terrain choice is your best defence.
Wind slabs have been less reactive, even with explosive control. Isolated pockets of wind still exist in lee areas.
We have seen a few recent avalanches on the deep persistent problem of basal facets and depth hoar, often beginning as wind slabs and then stepping down to the weak base. Conservative terrain choice is your best defence.
New snow, previous strong wind and warm temperatures are great ingredients for slab avalanches. Storm slabs have been, and will continue to be most reactive on steep, unsupported/cross-loaded terrain features.
Consistent moderate SW winds.
This is a complex problem. The spacial variability and potential consequences of triggering a large avalanche make this extremely difficult to gain confidence in the snowpack bridging this weakness. Caution and good travel habits are always advised.
As temperatures warm, the basal facets may become a player again, especially in the relatively shallow front ranges. Consider overhead hazard, the consequence of a small avalanche triggering a deeper slab, and stick to deep well supported terrain.
Fresh wind slabs exist near ridge-tops.
In the past week we have seen several avalanches initiate or step down to this deep persistent layer. Conservative terrain choice is your best defence.
Fresh wind slabs exist near ridge-tops.
In the past week we have seen several avalanches initiate or step down to this deep persistent layer. Conservative terrain choice is your best defence.
More new snow and warm temperatures will promote slab development and increase the likelihood of triggering today. Storm slabs are most reactive on steep, unsupported and cross-loaded terrain features.
Wind slabs exist near ridge-tops.  They have been small in size but should be treated with respect, especially in gully features.
In the past week we have seen several avalanches initiate or step down to this deep persistent layer. Conservative terrain choice is your best defence as this problem is almost impossible to forecast.
Previous mod to strong SW winds have created new wind slabs, these are now buried by 10 cm of new snow in the Icefields area.
This is a complex problem. The spacial variability and potential consequences of triggering a large avalanche on this layer makes it extremely difficult to gain confidence in the snowpack.  Consider this before entering bigger features.
Wind slabs exist near ridge-tops. They have been small in size but should be treated with respect, especially in gully features.
In the past week we have seen several avalanches initiate or step down to this deep persistent layer. Conservative terrain choice is your best defence as this problem is almost impossible to forecast.
20cm of new snow in the past 2 days fell with warm temperatures and moderate S winds, promoting the development of reactive slabs. The sun could initiate another natural avalanche cycle today.
In the past week we have seen several avalanches initiate or step down to this deep persistent layer of facets, depth hoar and crusts. Conservative terrain choices are your best defence as this problem is almost impossible to forecast.
Wind slabs exist near ridge-tops. With increased winds on Sunday these will remain possible to trigger.
In the past week we have seen several avalanches initiate or step down to this deep persistent layer of facets, depth hoar and crusts. Conservative terrain choices are your best defence as this problem is almost impossible to forecast.
Wind slabs exist near ridge-tops. With increased winds on Sunday these will remain possible to trigger.
Continued mod SW winds have created new wind slabs,
This is a complex problem. The spacial variability and potential consequences of triggering a large avalanche on this layer makes it extremely difficult to gain confidence in the snowpack. Consider this before entering bigger features.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Incremental snowfall, combined with periods of moderate to strong wind, have loaded lee slopes. Pockets of reactive wind slab exist. Yesterday 2 skiers were seriously injured in an avalanche they triggered in the </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/Forever%20Young%20Sa%2020200125.jpg" target="_blank"><span class="s_9255B882">Forever Young couloir.</span></a><span class="s_AA239
In the past week we have seen several avalanches initiate or step down to this deep persistent layer of facets, depth hoar and crusts. Conservative terrain choices are your best defence as this problem is almost impossible to forecast.
Wind slabs exist near ridge-tops. With elevated winds continuing overnight Sunday thought Tuesday, expect these slabs to develop.
In the past week we have seen several avalanches initiate or step down to this deep persistent layer of facets, depth hoar and crusts. Conservative terrain choices are your best defence as this problem is almost impossible to forecast.
Wind slabs exist near ridge-tops. With elevated winds continuing overnight Sunday thought Tuesday, expect these slabs to develop.
Continued mod SW winds have created new wind slabs
This is a complex problem. The spacial variability and potential consequences of triggering a large avalanche on this layer makes it extremely difficult to gain confidence in the snowpack. Consider this before entering bigger features.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">Incremental snowfall, combined with periods of moderate to strong wind, have loaded lee slopes. Pockets of reactive wind slab exist. On Saturday, 2 skiers were seriously injured in an avalanche they triggered in the </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/Forever%20Young%20Sa%2020200125.jpg" target="_blank"><span class="s_9255B882">Forever Young couloir.</span></a><span class="s_AA239
Continued building of new windslabs through the region. Most prominent on N through E aspects due to SW winds but riders should be wary of obvious wind effect and surface clues on all exposed or potentially cross-loaded slopes at treeline and above.
This is a complex problem. The spacial variability and potential consequences of triggering a large avalanche on this layer makes it extremely difficult to gain confidence in the snowpack. Consider this before entering bigger features.
In the past week we have seen several avalanches initiate or step down to this deep persistent layer of facets, depth hoar and crusts. Be cautious with snowpack depths below 2m by choosing conservative terrain: modest angle and supported shape
Fresh wind slabs will continue to develop over the next several days with incoming snow and moderate to extreme winds expected in the alpine.
Strong southwest winds have created stiff wind slabs in lee features at alpine and treeline. Natural activity may have subsided but human triggering remains possible.
Although recent warm temperatures have generally added strength to the snowpack, triggering persistent slabs is still possible in shallow snowpack areas.
Generally the snowpack in the Little Yoho region is deeper and these layers are not as distinct. There area however areas, such as the ice climbs on Mounts Dennis and Stephen, that will display a shallower snowpack which must be treated with caution.
Fresh wind slabs will continue to develop over the next several days with incoming snow and moderate to extreme winds expected in the alpine.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">Light snowfall, combined with periods of moderate to strong wind, have loaded lee slopes. Pockets of wind slab exist in the alpine/upper tree-line. On Sat, 2 skiers were seriously injured in an avalanche they triggered in the </span><a href="https://www.avalanche.ca/map?panel=mountain-information-network-submissions/540f568f-5073-4518-b53a-630bc7964159" target="_blank"><span class="s_9255B882">Forever Young couloir</span></a><span class="s_AA239A9B">.
Continued building of new windslabs through the region. Most prominent on N through E aspects due to SW winds but riders should be wary of obvious wind effect and surface clues on all exposed or potentially cross-loaded slopes at treeline and above.
This is a complex problem. The spacial variability and potential consequences of triggering a large avalanche on this layer makes it extremely difficult to gain confidence in the snowpack. Consider this before entering bigger features.
Extreme wind values from the SW throughout the day on Wednesday will load lee areas, especially in the alpine. Due to the extreme winds, wind slabs could be forming at tree line.
In the past week we have seen several avalanches initiate or step down to this deep persistent layer of facets, depth hoar and crusts. Be cautious with shallow snowpack areas and avoid thin spots.
Extreme wind values from the SW throughout the day on Wednesday will load lee areas, especially in the alpine. Due to the extreme winds, wind slabs could be forming at tree line.
Generally the snowpack in the Little Yoho region is deeper and these layers are not as distinct. It is still a good idea to be cautious with shallow snowpack areas and avoid thin spots.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">Light snowfall combined with periods of moderate to strong wind have loaded lee slopes. Pockets of wind slab exist in the alpine/upper tree-line. On Sat, 2 skiers were seriously injured in an avalanche they triggered in the </span><a href="https://www.avalanche.ca/map?panel=mountain-information-network-submissions/540f568f-5073-4518-b53a-630bc7964159" target="_blank"><span class="s_9255B882">Forever Young couloir</span></a><span class="s_AA239A9B">.
Windslabs continue to build with steady strong Southwest winds. They are prominent on N through E aspects but be wary of wind effect on all exposed or potentially cross-loaded slopes at treeline and above from local terrain influences.
This is a complex problem. The spacial variability and potential consequences of triggering a large avalanche on this layer makes it extremely difficult to gain confidence in the snowpack. Consider this before entering large features.
Extreme wind values from the SW will load lee areas, especially in the alpine. With the intensity of the forecasted winds to continue through the weekend, expect windslab development at lower elevations.
Generally the snowpack in the Little Yoho region is deeper and these layers are not as distinct. It is still a good idea to be cautious with shallow snowpack areas and avoid thin spots.
Extreme wind values from the SW are loading lee slopes at alpine and tree line elevations. An increase in natural avalanche activity on this problem was observed Wednesday.
In the past week we have seen several avalanches initiate or step down to this deep persistent layer of facets, depth hoar and crusts. Be cautious with shallow snowpack areas and avoid thin spots.
20cm of new snow, coupled with mod to strong wind from the S-SW likely formed storm slabs in cross-loaded terrain features and immediate lees. Slabs will be most prevalent on Northerly asp; however, Solar asp could become touchy is the sun stays out.
Storm slabs will be developing through the day depending on location. This listed problem also incorporates previous wind slabs as well as loose dry avalanches in steep terrain, all of which will be increasing in size and likelihood.&nbsp;
With the large load expected over the next 48 hours, it is plausible we will see an increase in very large avalanches either starting or stepping down to the deep basal facets and depth hoar.&nbsp; Avalanches are expected to reach valley bottom.
Storm slabs will be developing through the day depending on location. This listed problem also incorporates previous wind slabs as well as loose dry avalanches in steep terrain, all of which will be increasing in size and likelihood.
Where this layer of basal facets and depth hoar exists in shallower snowpack areas, we expect an increase in natural activity.&nbsp; These will result&nbsp; in very large avalanches which could run to valley bottom.
A strong warm storm is expected to deliver upwards of 80cm of snow in the next 36 hours.
This is a complex problem. The spacial variability and potential consequences of triggering a large avalanche on this layer makes it extremely difficult to gain confidence in the snowpack. Consider this before entering large features.
The snowpack is extremely variable in depth and strength. Rapid loading in expected to cause a widespread natural avalanche cycle late Friday into Saturday.
Strong southwest winds have created stiff wind slabs in lee features. New snow will make buried windslab difficult to spot.
Today's main problem is the result of large amounts of snow arriving with strong to extreme winds. We are mid-storm with 30cm down and approximately 60cm to go over the next 2 days. Avalanche hazard will rise sharply this afternoon.
Storm slabs will be developing through the night. This problem also incorporates wind slabs as well as loose dry avalanches in steep terrain, all of which will be increasing in size and likelihood as the storm tracks through the region.
With the large load expected over the next 24 hours, we expect very large avalanches either starting or stepping down to the deep basal facets and depth hoar. Avalanches are expected to reach valley bottom and possible to extreme runouts.
60 cm forecast with Extreme winds. We should see widespread avalanche activity at all elevation with large avalanches running full path.
It is very likely that the amount of snow forecasted will overload this weakness and we will see avalanche running to ground on this layer. No one should be entering avalanche terrain at this time!
Storm slabs will be developing through the night. This problem also incorporates wind slabs as well as loose dry avalanches in steep terrain, all of which will be increasing in size and likelihood as the storm tracks through the region.
With the large load expected over the next 24 hours, we expect very large avalanches either starting or stepping down to the deep basal facets and depth hoar. Avalanches are expected to reach valley bottom and possible to extreme runouts.
Warm storm slabs are failing naturally from precipitation and wind overload. These slides are running to valley bottom.
Up to 40 cm in last 24 hrs with Mod SW winds. We should see widespread avalanche activity at all elevation with large avalanches running full path. 
It is very likely that this new and heavy snow load will overload this weakness and we will see avalanches running to ground on this layer. No one should be entering avalanche terrain at this time!
Storm and wind slabs developed rapidly in the past 24hrs along with fragile cornice growth. Despite the cooling trend, expect these slabs to remain sensitive to failure over the short term with continued natural activity expected.
With start zones loaded and the snowpack weakened by rain at lower elevations, avalanches can easily scrub to ground and entrain mass as they move though the track and into the run out zone. Many slides have reached valley bottom in the past 24 hrs.
Storm and wind slabs developed rapidly in the past 24hrs along with fragile cornice growth. Despite the cooling trend, expect these slabs to remain sensitive to failure over the short term with continued natural activity expected.
With start zones loaded and the snowpack weakened by rain at lower elevations, avalanches can easily scrub to ground and entrain mass as they move though the track and into the run out zone. Many slides have reached valley bottom in the past 24 hrs.
Fresh pockets of soft windslab that formed late in the storm will be reactive today.&nbsp; The deep and stiff widespread windslab that formed mid storm will be more stubborn, but may remain senstive to human and cornice triggering in the alpine.
Cornices will have grown significantly in the past 48hrs and deserve a wide berth.&nbsp; Stay well back from corniced ridges, and do not hang out anywhere beneath them.
Wind slabs developed rapidly along with fragile cornice growth from consistently strong Southwest winds. Despite the cooling trend, expect these slabs to remain sensitive to failure over the short term with continued natural activity.
With start zones loaded, avalanches can easily scrub to ground and entrain mass as they move through the track and into the run out zone. Many slides have reached valley bottom in the past 48 hrs.
Wind slabs developed rapidly along with fragile cornice growth from consistently strong Southwest winds. Despite the cooling trend, expect these slabs to remain sensitive to failure over the short term with continued natural activity.
With start zones loaded, avalanches can easily scrub to ground and entrain mass as they move through the track and into the run out zone. Many slides have reached valley bottom in the past 48 hrs.
Fresh pockets of soft windslab that formed late in the storm linger on lee slopes. The deep and stiff widespread windslab that formed mid storm is generally unreactive, but may remain sensitive to large triggers like cornices in the alpine.
Cornices grew significantly Saturday and deserve a wide berth. Stay well back from corniced ridges.
Wind slabs developed rapidly along with fragile cornice growth from consistently strong Southwest winds. Despite the cooling trend, expect these slabs to remain sensitive to failure over the short term.
With start zones loaded, avalanches can easily scrub to ground and entrain mass as they move through the track and into the run out zone.
Wind slabs developed rapidly along with fragile cornice growth from consistently strong Southwest winds. Despite the cooling trend, expect these slabs to remain sensitive to failure over the short term.
With start zones loaded, avalanches can easily scrub to ground and entrain mass as they move through the track and into the run out zone.
Recent extreme winds have created thick wind slabs in the alpine. Be very cautious as you climb to treeline and leave the thick surface crust behind, the snowpack will change very quickly.
Up to 50 cm during the recent storm with Mod SW winds.
Recent 50 cm of new snow has the potential to overload this weakness
Fresh pockets of soft windslab that formed late in the storm linger on lee slopes. The deep and stiff widespread windslab that formed mid storm is generally unreactive, but may remain sensitive to large triggers like cornices in the alpine.
Cornices grew significantly Saturday and deserve a wide berth. Stay well back from corniced ridges.
Increasing wind into the strong range will load lee (NE) aspects, especially in the alpine starting late on Tuesday. Storm snow from last week will be easily distributed.
Deep releases to ground are less likely, however, start zones will be loaded again with forecasted strong wind. Avoid exposure to start zones until there is less uncertainty.&nbsp;
Increasing wind into the strong range will load lee (NE) aspects, especially in the alpine starting late on Tuesday. Storm snow from last week will be easily distributed.
Deep releases to ground are less likely, however, start zones will be loaded again with forecasted strong wind. Avoid exposure to start zones until there is less uncertainty.
New and building windslabs present in the forecast region. Slab sensitivity will vary; with potentially wide variations over a small area. Assess each slope independently.
Up to 50 cm during the recent storm with Mod SW winds.
Yesterday's moderate wind produced wind slabs on immediate lees, and cross-loaded terrain features in the alpine and exposed areas of treeline.
Cornices have grown significantly thanks to our Atmospheric River last weekend. The number of Cornice failures has declined in the last 48 hours but, they are still susceptible to failure and have the potential to trigger large avalanches.
Previous storm snow from this past week has been redistributed by increased SW winds over the past 2 days. These wind slabs could be quite thick in some spots and should be treated with caution, especially in alpine features.
Deep releases on the facets and depth hoar could be less likely but are hard to predict. Dealing with the uncertainty around this layer can be somewhat managed by avoiding large, committing terrain and areas with a thin snowpack.
Previous storm snow from this past week has been redistributed by increased SW winds over the past 2 days. These wind slabs could be quite thick in some spots and should be treated with caution, especially in alpine features.
Deep releases on the facets and depth hoar could be less likely in thicker snowpack areas but are hard to predict. Dealing with the uncertainty can be somewhat managed by avoiding large, committing terrain and areas with a thin snowpack.
New and developing wind slabs in the forecast region. Slab sensitivity will vary; with potentially wide variations over a small area. Assess each slope independently.&nbsp;
Incremental loading of new low-density snow and moderate to strong wind has formed storm slabs on immediate lees, and cross-loaded terrain features at all elevations.
We now have enough low-density new snow for a loose dry avalanche problem. Practise your &quot;sluff&quot; management today, and be cognisant of terrain traps below you, or other parties above you.
Cornices have grown significantly thanks to our Atmospheric River last weekend. The number of Cornice failures has declined in the last 48 hours but, they are still susceptible to failure and have the potential to trigger large avalanches.
New and developing wind slabs in the forecast region. Slab sensitivity will vary; with potentially wide variations over a small area. Assess each slope independently.
Recent moderate-strong winds have built wind slabs in the alpine down to tree line. These wind slabs could be quite thick in some spots and should be treated with caution, especially in alpine features.
Deep releases on the facets and depth hoar could be less likely but are hard to predict. Dealing with the uncertainty around this layer can be somewhat managed by avoiding large, committing terrain and areas with a thin snowpack.
Recent moderate-strong winds have built wind slabs in the alpine down to tree line. These wind slabs could be quite thick in some spots and should be treated with caution, especially in alpine features.
Deep releases on the facets and depth hoar could be less likely but are hard to predict. Dealing with the uncertainty around this layer can be somewhat managed by avoiding large, committing terrain and areas with a thin snowpack.
Incoming wind and snow will form new slabs at all elevations. Below 2000m, these will sit on a melt freeze crust which could serve as an excellent bed surface and increase reactivity. Take the time to evaluate the bond of new snow to this layer.
New low-density snow and moderate to strong wind has formed slabs on immediate lees, and cross-loaded terrain features.
Cornices have grown significantly thanks to our Atmospheric River last weekend. These are still susceptible to fail naturally, and have the potential to trigger large avalanches.
Incoming wind and snow will form slabs at all elevations and aspects. Below 2000m, these will sit on a thick crust which could serve as an excellent bed surface and increase reactivity. Take the time to evaluate the bond of new snow to this layer.
Wind over the last week has redistributed snow in the alpine creating wind effect and forming slabs. An increase in winds overnight Friday with incoming snow, a wind shift to the east Sunday and strong winds forecast for Sunday will build these slabs
High consequence deep releases on the facets and depth hoar at the base of the snowpack remain possible. Dealing with the uncertainty around this layer can be somewhat managed by avoiding large, committing terrain and areas with a thin snowpack.
New and developing wind slabs are present in the forecast region. Their sensitivity will vary particularly  with local loading and wind patterns. 
Wind over the last week has redistributed snow in the alpine creating wind effect and forming slabs. An increase in winds overnight Friday with incoming snow, a wind shift to the east Sunday and strong winds forecast for Sunday will build these slabs
High consequence deep releases on the facets and depth hoar at the base of the snowpack remain possible. Dealing with the uncertainty around this layer can be somewhat managed by avoiding large, committing terrain and areas with a thin snowpack.
New snow will be reactive today, and could run fast and far on slopes where it overlies previous firm surfaces.
New snow may hide windslabs from previous moderate to strong winds - these formed in immediate lees, and cross-loaded terrain features in the alpine and in open treeline areas.
Cornices have grown significantly thanks to our Atmospheric River last weekend. These are still susceptible to fail naturally, and have the potential to trigger large avalanches.
New and developing wind slabs are present in the forecast region. Their sensitivity will vary particularly with local loading and wind patterns.
Wind over the last week has redistributed snow in the alpine creating wind effect and forming slabs. Strong alpine winds forecast for Sunday and Tuesday will develop these slabs and likely form them at treeline as well.
High consequence deep releases on the facets and depth hoar at the base of the snowpack remain possible. Dealing with the uncertainty around this layer can be somewhat managed by avoiding large, committing terrain and areas with a thin snowpack.
Wind over the last week has redistributed snow in the alpine creating wind effect and forming slabs. Strong alpine winds forecast for Sunday and Tuesday will develop these slabs and likely form them at treeline as well.
High consequence deep releases on the facets and depth hoar at the base of the snowpack remain possible. Dealing with the uncertainty around this layer can be somewhat managed by avoiding large, committing terrain and areas with a thin snowpack.
This week's low density snow has not yet consolidated, and could run fast and far on slopes where it overlies previous firm surfaces.
Moderate to strong winds overnight will have formed new wind slabs in immediate lees, and cross-loaded terrain features in the alpine and in open treeline areas.
New and developing wind slabs are present in the forecast region. Their sensitivity will vary particularly with local loading and wind patterns.
Strong winds on Sunday created new wind slabs at treeline and in the alpine. These could be triggered by skiers or climbers. Choose routes or ski lines where you can avoid wind slabs until they have a chance to bond.
High consequence avalanches on the facets and depth hoar at the base of the snowpack remain possible. Large triggers such as cornices and wind slabs, or human triggering in thin snowpack areas are most likely to result in avalanches on this layer.
Strong winds on Sunday created new wind slabs at treeline and in the alpine. These could be triggered by skiers or climbers. Choose routes or ski lines where you can avoid wind slabs until they have a chance to bond.
High consequence avalanches on the facets and depth hoar at the base of the snowpack remain possible. Large triggers such as cornices and wind slabs, or human triggering in thin snowpack areas are most likely to result in avalanches on this layer.
This week's low density snow has not yet consolidated. This new snow could run fast and far, especially on slopes where it overlies previous firm surfaces.
Mod to strong winds the past 24 hrs have formed fresh slabs in immediate lees and cross-loaded terrain features in the alpine and in open treeline areas. Variable wind direction throughout the park- use caution as you transition aspect and elevation.
This week's low density snow has not yet consolidated. This new snow could run fast and far, especially on slopes where it overlies previous firm surfaces.
Mod to strong winds the past 24 hrs have formed fresh slabs in immediate lees and cross-loaded terrain features in the alpine and in open treeline areas. Variable wind direction throughout the park- use caution as you transition aspect and elevation.
Strong SW winds and new snow is forecasted for Tuesday.&nbsp; When this materializes expect new wind slabs in lee areas. These could be triggered by skiers or climbers. Travel where you can avoid wind slabs until they have a chance to bond.
High consequence avalanches on the facets and depth hoar at the base of the snowpack remain possible. Large triggers such as cornices and wind slabs, or human triggering in thin snowpack areas are most likely to result in avalanches on this layer.
Strong SW winds and new snow is forecasted for Tuesday. When this materializes expect new wind slabs in lee areas. These could be triggered by skiers or climbers. Travel where you can avoid wind slabs until they have a chance to bond.
High consequence avalanches on the facets and depth hoar at the base of the snowpack remain possible. Large triggers such as cornices and wind slabs, or human triggering in thin snowpack areas are most likely to result in avalanches on this layer.
Incoming wind and snow will form new slabs on lee aspects. Below 2000m, these sit on a thick crust which could serve as an excellent bed surface and allow fractures to propagate surprisingly far. Take the time to evaluate the bond to this layer.
Wind slabs are prevalent through the forecast region. Their sensitivity will vary particularly with local loading and wind patterns.
Gusty SW winds are moving snow around right now, creating pockets of soft slab in the alpine and exposed tree-line locations. Steep zones like Cheops N, Macdonald, and the S side of Tupper will likely be active today with avalanches.
This week's low density snow has a propensity to sluff far and fast, especially with another 5-10cm today.
Strong wind from the SW materialized today and created wind slabs in lee areas. Ski patrollers could easily ski cut small soft avalanches today. Travel where you can avoid wind slabs until they have a chance to bond.
High consequence avalanches on the facets and depth hoar at the base of the snowpack remain possible. Large triggers such as cornices and wind slabs, or human triggering in thin snowpack areas are most likely to result in avalanches on this layer.
Wind slabs are prevalent through the forecast region. Their sensitivity will vary particularly with local loading and wind patterns.
Strong wind from the SW materialized today and created wind slabs in lee areas. Ski patrollers could easily ski cut small soft avalanches today. Travel where you can avoid wind slabs until they have a chance to bond.
Due to a more consolidated basal snowpack, deep persistent slab avalanches are less likely in Little Yoho. However, avoiding shallow areas where triggering is most likely is always good practice.
The most recent snowfall came with milder temps, creating a 10-20cm soft slab that seemed reactive on steep, unsupported rolls at all elevations. This new storm slab may hide previous wind slabs in alpine lee and cross-loaded features.
Wind slabs are prevalent through the forecast region. Their sensitivity will vary particularly with local loading and wind patterns.
We expect these in the very high alpine (~3000 m) and they could be buried under new snow. Unlikely to release naturally unless triggered by sun or more wind, but human triggering is possible if you find one. Feel for density changes underfoot.
We continue to see one of these avalanches every few days. Very isolated but very destructive. Avoid travel directly through avalanche starting zones until this layer has had more time to stabilize. That is the only answer: time and patience.
We expect these in the very high alpine (~3000 m) and they could be buried under new snow. Unlikely to release naturally unless triggered by sun or more wind, but human triggering is possible if you find one. Feel for density changes underfoot.
This problem is not found is most of the Little Yoho region (Mt. Field, Little Yoho Valley), but we remain concerned about it in shallow areas such as Mt Dennis, Mt Stephen and perhaps even Emerald Lake were we have no recent observations.
Snowfall earlier this week was accompanied by milder temps, creating a 10-20cm soft slab that seemed reactive on steep, unsupported rolls at all elevations. This new storm slab may hide previous wind slabs in alpine lee and cross-loaded features.
Wind slabs are prevalent through the forecast region. Their sensitivity will vary particularly with local loading and wind patterns.
Below 2100m, windslabs sit on a thick melt freeze crust which could serve as an excellent bed surface and allow fractures to propagate surprisingly far. Take the time to evaluate the bond to this layer.
Small wind-slabs can be expected near ridge-tops and lee terrain in the alpine.
Several larger avalanches failing on this layer have been observed in the past week. Bigger features and convex slopes should still be avoided until this layer stabilizes.
Small wind-slabs can be expected near ridge-tops and lee terrain in the alpine.
The mid and lower snowpack is generally strong in this region. Concern still exists for shallower areas where basal facets may exist. Examples are wind affected terrain in the alpine.
30cm of storm snow in the last 24hrs at treeline with mod S-W winds. Expect soft storm slab with more potential for human triggering as you move into wind effected terrain.
30cm of storm snow will lead to loose dry slides in steep to extreme terrain. Avoid gulley features where small slides may form deeper deposits.
While winds stay elevated, wind-slabs can be expected near ridge-tops and lee terrain in the alpine.
Several larger avalanches failing on the basal facet/depth hoar have been observed in the past week. This problem is more susceptible to triggering in areas with a thin snowpack (~150cm) where they are well preserved and are hard to predict.
Small wind-slabs can be expected near ridge-tops and lee terrain in the alpine.
The mid and lower snowpack is generally strong in this region. Concern still exists for shallower areas especially in the alpine where basal facets may exist. We have limited alpine observations to know if this is a problem or not.
Continued Moderate SW winds are keeping the wind slabs touchy in lee features.&nbsp;  Sensitivity will vary with local loading and wind patterns.
45cm of storm snow in the last 48hrs at treeline with mod S-W winds and up to 10cm forecast today. Expect soft storm slab with more potential for human triggering as you move into wind effected terrain.
While winds stay elevated, wind-slabs can be expected near ridge-tops and lee terrain in the alpine.
Several larger avalanches failing on the basal facet/depth hoar have been observed in the past week. This problem is more susceptible to triggering in areas with a thin snowpack (~150cm) where they are well preserved and are hard to predict.
Strong winds in the park today. SW winds are keeping the wind slabs touchy in lee features. Sensitivity will vary with local loading and wind patterns.
Wind effect and slab development can be anticipated as you climb above the trees. Extensive wind effect with hard slab development can be expected in the alpine.
The mid and lower snowpack is generally strong in this region. Concern still exists for shallower areas especially in the alpine where basal facets may exist. We have limited alpine observations to know if this is a problem or not.
Wind slabs are very prevalent with previous loading in lee features. Sensitivity will vary with local loading and wind patterns.
Recent strong W winds have created wind slabs near ridge tops and in lee areas of the alpine, with isolated wind slabs down into treeline. Avoid wind loaded areas and watch for freshly loaded cornices up high for the next day or two.
Several large avalanches failing on the basal facet/depth hoar have been observed in the past week. These can be hard to predict but triggering is more likely in areas with a thin snowpack (~150cm) where the basal facets and depth hoar are prominent.
Wind effect and wind slabs are present in isolated areas at treeline and more common in the alpine. Skier triggering the wind slabs is possible in steep or convex terrain. Recent cornice development has also occurred so minimize exposure to cornices.
The mid and lower snowpack is generally strong in this region. Concern still exists for shallow areas especially in the alpine where the basal facets exist. Probe regularly to determine snow depth and whether the weaker basal facets are present.
New snow accompanied by moderate westerly winds has created windslabs at Tree-line and Alpine elevations. Slabs were observed at ridge-top areas and on exposed, cross-loaded slopes. Last night's low density dusting may be hiding these slabs.
Wind slabs are widespread through the region with new and previous loading in lee features. Sensitivity will vary with local loading and wind patterns.
Shallow snowpack areas, windslabs and/or large triggers such as cornice failures could trigger this deep layer. The consequences of triggering will likely be severe!
Recently formed windslabs are stabilizing but can still be triggered by people in steep leeward areas at treeline and in the alpine. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Several large avalanches failing naturally on the basal facet/depth hoar have been observed in the past week. These are hard to predict, but are most likely in areas with a thin snowpack (~150cm) where the basal facets and depth hoar are prominent.
Recently formed windslabs are stabilizing but can still be triggered by people in steep leeward areas at treeline and in the alpine. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
This problem is isolated to shallow snowpack areas in Little Yoho, such as Mt. Dennis or Mt. Stephen and we have not had a report of a large, deep avalanche in this area for some time.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">The reactivity of these windslabs is extremely variable. Avoid heavily loaded areas and be aware that below 2200m, windslabs sit on a thick melt freeze crust which could serve as an excellent </span><a href="https://www.avalanche.ca/glossary?q=bed+su#bed-surface" target="_blank"><span class="s_9255B882">bed surface</span></a><span class="s_AA239A9B">.
New snow accompanied by recent moderate westerly winds has created windslabs at Alpine elevations. Slabs were observed this week at ridge-top areas and on exposed, cross-loaded slopes. Last night's low density dusting may be hiding these slabs.
Recently formed windslabs are stabilizing but can still be triggered by people in steep leeward areas in the alpine. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Several large avalanches failing naturally on the basal facet/depth hoar have been observed in the past week. These are hard to predict, but are most likely in areas with a thin snowpack (~150cm) where the basal facets and depth hoar are prominent.
Recently formed windslabs are stabilizing but can still be triggered by people in steep leeward areas in the alpine. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
This problem is isolated to shallow snowpack areas in Little Yoho, such as Mt. Dennis or Mt. Stephen and we have not had a report of a large, deep avalanche in this area for some time.
Wind slabs are widespread through the region with new and previous loading in lee features. Sensitivity will vary with local loading and wind patterns.
Shallow snowpack areas, windslabs and/or large triggers such as cornice failures could trigger this deep layer. The consequences of triggering will likely be severe!
New snow accompanied by recent moderate westerly winds has created wind slabs in isolated locations. Slabs were observed this week at ridge-top areas and on exposed, cross-loaded slopes.
If the sun stays out today, loose dry avalanches may be initiated on steep SE-W aspects and around rocky features.
Increased winds Thursday may add to recently formed wind slabs that can still be triggered by people in steep leeward areas in the alpine. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Several large avalanches failing naturally on the basal facet/depth hoar have been observed in the past week. These are hard to predict, but are most likely in areas with a thin snowpack (~150cm) where the basal facets and depth hoar are prominent.
Wind slabs are widespread through the region with new and previous loading in lee features. Sensitivity will vary with local loading and wind patterns.
Shallow snowpack areas, windslabs and/or large triggers such as cornice failures could trigger this deep layer. The consequences of triggering will likely be severe!
Increased winds Thursday may add to recently formed windslabs, which can still be triggered by people in steep leeward areas in the alpine. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Solar-triggered avalanches on steep south facing aspects remain a concern for today. These avalanches are especially likely around rocky outcrops when daytime heating is intensified by the rocks.  Solar heating also weakens cornices.
Consistent moderate winds from the SW have formed fresh wind slab in the alpine. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Several large avalanches failing naturally on the basal facet/depth hoar have been observed in the past week. These are hard to predict, but are most likely in areas with a thin snowpack (~150cm) where the basal facets and depth hoar are prominent.
Consistent moderate SW winds continues to build fresh wind slab in the alpine and remains possible to trigger. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Strong winds over the next three days will amplify this problem in specific locations.
Watch for avalanches triggered by prolonged solar input on steep south facing aspects today. These avalanches are especially likely around rocky outcrops where daytime heating is absorbed by dark rock surfaces. Solar heating also weakens cornices.
Sporadic cornice failures have occurred over the last few days. Limit your exposure to these large triggers.
Consistent moderate winds, gusting to extreme from the SW have formed fresh wind slab in the alpine. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Several large avalanches failing naturally on the basal facet/depth hoar have been observed in the ten days. These are hard to predict, but are most likely in areas with a thin snowpack (~150cm) where the basal facets and depth hoar are prominent.
Consistent moderate to strong Southerly winds continues to build fresh wind slab in the alpine and remains possible to trigger. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Wind slabs are widespread through the region with new and previous loading in lee features. Sensitivity will vary with local loading and wind patterns. Winds continue to blow strong.&nbsp;
Triggering could occur from shallow snowpack areas or from large loads such a cornice failure. The consequences of triggering will likely be severe!
Developing storm slab over the freshly buried Feb 22 Surface hoar. In wind effected surface snow this layer will be more sensitive and prone to propagate. Human triggering of the fresh storm slab is likely.
Consistent moderate winds, gusting to extreme from the SW have formed slab in the alpine and wind effect can be expected at treeline. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Several large avalanches failing naturally on the basal facet/depth hoar have been observed in the last 14days. These are hard to predict, but are most likely in areas with a thin snowpack (~150cm) where the basal facets and depth hoar are prominent.
Consistent moderate winds, gusting to extreme from the SW have formed slab in the alpine and wind effect can be expected at treeline. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Wind slabs are widespread through the region with new and previous loading in lee features. Sensitivity will vary with local loading and wind patterns. Winds continue to blow strong.
Triggering could occur from shallow snowpack areas or from large loads such a cornice failure. The consequences of triggering will likely be severe!
Developing storm slab over the freshly buried Feb 22 surface hoar/ sun crust.&nbsp; Although the new slab is very soft, human triggering of the fresh storm slab is likely on steep features and in wind affected areas.
Recent moderate to strong SW winds have formed wind slabs in lee areas of the alpine with isolated pockets of wind slab down into treeline. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;150cm) where the basal facets and depth hoar are prominent.
Recent moderate to strong SW winds have formed wind slabs in lee areas of the alpine with isolated pockets of wind slab down into treeline. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Wind slabs are widespread through the region with new and previous loading in lee features. Sensitivity will vary with local loading and wind patterns. Triggering a wind slab has the potential to activate the deep persistent slab.
Triggering could occur from shallow snowpack areas or from large loads such a cornice failure. The consequences of triggering would be severe!
The storm slab is increasing in cohesiveness and thickness on top of the Feb 22 surface hoar/ sun crust. Human triggering of the fresh storm slab is likely on steep features and in wind affected areas.
Low density storm snow has a propensity to be triggered by short, intense solar inputs. Sunny breaks today could be just that trigger.&nbsp;
15-25cm of new snow paired with increasing&nbsp; SW-NW winds and through the forecast period will create reactive slabs in the alpine and treeline, especially in lee areas.
Wind slabs are widespread in the alpine with previous loading in lee features. Sensitivity will vary with local loading and wind patterns. Triggering a wind slab has the potential to activate the deep persistent slab.
Skier triggering could occur in shallow snowpacks or from large loads such a cornice failure. The consequences of triggering would be severe!
Buried wind slabs are present in lee areas of the alpine with isolated pockets of wind slab down into treeline. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;150cm) where the basal facets and depth hoar are prominent.
Buried wind slabs are present in lee areas of the alpine with isolated pockets of wind slab down into treeline. Cornices have grown very large in recent weeks, so minimize your exposure to them when possible.
Slab properties in the storm snow have been slow to develop. Where slabs do exist, they overlie the Feb 22nd surface hoar. On steep solar aspects the surface hoar sits on a crust, and settled snow everywhere else.
&quot;Sluffing &quot;is likely in steep unsupported terrain on all aspects. If the sun stays out today, we should see several small loose dry avalanches on steep, rocky terrain features, on solar aspects.
Wind slabs are widespread in the alpine on lee and cross-loaded features. Triggering has the potential to initiate the deep persistent slab
Skier triggering could occur in shallow snowpack areas or from large loads such a cornice failure. The consequences of triggering would be severe!
Buried wind slabs are present in lee areas of the alpine with isolated pockets of wind slab down into treeline. Cornices have grown very large in recent weeks, so minimize your exposure to them when possible.
Wind slabs are present in lee areas of the alpine with isolated pockets of wind slab down into treeline. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;150cm) where the basal facets and depth hoar are prominent.
Feb 22 surface hoar is a persistent weak layer down 30-40cm and overlies a thick crust on solar aspects. This layer is easily triggered where soft slabs have formed. Ongoing precipitation, wind and rising temperatures will increase slab properties.
Well defined wind effect and scouring in exposed areas at TL and the alpine. Triggering has the potential to initiate the deep persistent slab.
Skier triggering could occur in shallow snowpack areas or from large loads such a cornice failure. The consequences of triggering would be severe!
Wind slabs are present in lee areas of the high alpine. So far these are small but have been reported as a touch more reactive than yesterday.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;150cm) where the basal facets and depth hoar are prominent.
New wind slabs are forming in the alpine mainly in the lees of alpine terrain. They have been reported to be a touch more reactive than yesterday.
Feb 22 surface hoar is a persistent weak layer down 30-40cm that overlies a thick crust on solar aspects. It is easily triggered where soft slabs have formed, especially around tree line where the surface hoar is preserved and large.
Well defined wind effect and scouring in exposed areas at TL and the alpine. Triggering has the potential to initiate the deep persistent slab.
Skier triggering could occur in shallow snowpack areas or from large load. The consequences of triggering would be severe!&nbsp; Caution traveling, skiing and climbing in Run out zones as avalanche have the potential to run full path
Wind slabs are present in lee areas of the alpine with isolated wind slabs down into treeline in some areas. These are small and generally stubborn but are present in more areas due to increased winds on Thursday.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;150cm) where the basal facets and depth hoar are prominent.
New wind slabs are forming in alpine lee areas. These are a little more widespread due to gusty SW winds on Thursday.
We are still seeing moderate wind transport as of Thursday, February 27th.
Feb 22 surface hoar is a persistent weak layer down 50-60cm that overlies a thick crust on solar aspects. Use extra caution on slopes that have not seen any activity since this layer was buried
20cm overnight on the 27th has formed fresh storm slab. More snow and warm temperatures today will promote slab formation and sensitivity to triggering
Triggering wind slab in shallow areas has the potential to initiate the deep persistent slab.
Up to 20cm of new snow forecasted for region Friday night. Keep an eye on how reactive this snow is when traveling through terrain. Triggering storm slab in shallow areas has the potential to initiate the deep persistent slab.
Skier triggering could occur in shallow snowpack areas or from large load. The consequences of triggering would be severe! Caution traveling, skiing and climbing in run out zones as avalanche have the potential to run full path
New windslabs will develop overnight and through the day tomorrow with forecasted snow and moderate to strong SSW wind.&nbsp; These new slabs will overlie the older thin windslabs we have described on lee features.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are prominent.
With snow and SSW wind forecasted Friday night, new wind slabs will form in the lees of features.. These overlie the previously described thin wind slabs that have been reactive in isolated loations.
30cm+ in the last 48hrs has formed fresh storm slab. The storm slab, where triggered, will likely overload the Feb 22nd surface hoar layer. This layer is susceptible to human triggering.
Feb 22 surface hoar is a persistent weak layer down 50-60cm that overlies a thick crust on solar aspects. This layer has been very active over the last 24hrs. This layer is susceptible to human triggering.
New wind slab development in the alpine and exposed areas at tree line. Expect these to be reactive to human triggering in the immediate lee of terrain features.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are prominent.
New wind slab development in the alpine and exposed areas at tree line. Expect these to be reactive to human triggering in the immediate lee of terrain features and in steep gullies.
Triggering wind slab in shallow areas has the potential to initiate the deep persistent slab.
Skier triggering could occur in shallow snowpack areas or from large load. The consequences of triggering would be severe! Caution traveling, skiing and climbing in run out zones as avalanche have the potential to run full path
Surface hoar buried on February 22nd is now a persistent weak layer down 60+cm.&nbsp; The surface hoar overlies a thick crust on solar aspects. This layer was active yesterday and remains susceptible to human triggering.
20+cm in the last 48hrs has formed fresh storm slab. The storm slab, where triggered, may step down to the Feb 22nd surface hoar layer.
Triggering wind slab in shallow areas has the potential to initiate the deep persistent slab.
Skier triggering could occur in shallow snowpack areas or from large load. The consequences of triggering would be severe! Caution traveling, skiing and climbing in run out zones as avalanche have the potential to run full path
New wind slab development in the alpine and exposed areas at tree line. Expect these to be reactive to human triggering in the immediate lee of terrain features.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are prominent.
New wind slab development in the alpine and exposed areas at tree line. Expect these to be reactive to human triggering in the immediate lee of terrain features and in steep gullies.
Surface hoar buried on February 22nd is now a persistent weak layer down 60+cm. The surface hoar overlies a thick crust on solar aspects. This layer was active yesterday and remains susceptible to human triggering.
Strong- Extreme winds this morning are building fresh windslabs in all open terrain. The wind slabs, where triggered, could step down to the Feb 22nd surface hoar layer.
Wind effect and windslab are common through the region with varied reactivity. Ridge tops and immediate lee features pose the most obvious hazard to triggering but anywhere with visible wind effect can pose a threat.
Skier triggering could occur in shallow snowpack areas or from large load. The consequences of triggering would be severe! Caution traveling, skiing and climbing in run out zones as avalanche have the potential to run full path
New wind slab development in the alpine and exposed areas at tree line. Expect this problem to be reactive to human triggering where new loading exist.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are prominent.
New wind slab development in the alpine and exposed areas at tree line. Expect these to be reactive to human triggering in the immediate lee of terrain features and in steep gullies.
Watch out for heavily loaded pockets near ridgetops or in cross loaded features.
Strong- Extreme winds have built windslabs in open terrain features on all aspects in the Alpine and exposed areas of TL and BTL. If triggered these wind slabs could step down to the Feb 22nd surface hoar layer.
The Feb 22nd SH is now buried 60+cm deep, which is a likely depth for skier triggering, especially in shallower snow pack areas. Steep solar aspects harbor a crust under the surface hoar layer, which can increase the sensitivity of triggering.
More snow and wind will add to the wind slab problem at tree line and above. As the problem develops we will likely see natural avalanches release out of steep leeward terrain.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are prominent.
Wind effect and windslab are common through the region with varied reactivity. Ridge tops and immediate lee features pose the most obvious hazard to triggering but anywhere with visible wind effect can pose a threat.
New snow will need some time to settle and stabilize.
Skier triggering could occur in shallow snowpack areas or from large load. The consequences of triggering would be severe! Caution traveling, skiing and climbing in run out zones as avalanche have the potential to run full path
More snow and wind will add to the wind slab problem at tree line and above. As the problem develops we will likely see natural avalanches release out of steep leeward terrain.
Strong- Extreme winds have built windslabs in open terrain features on all aspects in the Alpine and exposed areas of TL and BTL. If triggered these wind slabs have the potential to step down to the Feb 22nd surface hoar layer.
The Feb 22nd SH is now buried 60+cm deep, which is a likely depth for skier triggering, especially in shallower snow pack areas. Steep solar aspects harbor a crust under the surface hoar layer, which can increase the sensitivity of triggering.
Expect to find slab formation on lee aspects and open areas from the alpine to below tree line. Loose dry sluffing from steep terrain is also a concern, especially in gulleys, terrain traps and above cliffs.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are prominent.
Wind effect and windslab are common through the region with varied reactivity. Ridge tops and immediate lee features pose the most obvious hazard to triggering but anywhere with visible wind effect can pose a threat.
New snow will need some time to settle and stabilize.
Skier triggering could occur in shallow snowpack areas or from large load. The consequences of triggering would be severe! Caution traveling, skiing and climbing in run out zones as avalanche have the potential to run full path
Expect to find slab formation on lee aspects and open areas from the alpine to below tree line. Loose dry sluffing from steep terrain is also a concern, especially in gulleys, terrain traps and above cliffs.
Up to 35 mm of precipitation is expected  Friday pm into Saturday. This could translate to between 20 and 50cm of snow in Waterton park. Avoid avalanche terrain during periods of heavy loading and give new snow time to settle.
Watch out for heavily loaded pockets near ridgetops or in cross loaded features.
Windslabs in open terrain features on all aspects in the Alpine and exposed areas of TL and BTL. If triggered these wind slabs have the potential to step down to the Feb 22nd surface hoar layer.
The Feb 22nd SH is now buried 60+cm deep, which is a likely depth for skier triggering, especially in shallower snow pack areas. Steep solar aspects harbor a crust under the surface hoar layer, which can increase the sensitivity of triggering.
Expect to find wind &amp; storm slab formation on lee aspects and open areas from the alpine to below tree line. Loose dry sluffing from steep terrain is also a concern, especially in gulleys, terrain traps and above cliffs with ongoing wind &amp; snowfall.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are prominent.
Expect to find wind and storm slab formation on lee aspects and open areas from the alpine to below tree line. Loose dry sluffing from steep terrain is also a concern, especially in gulleys, terrain traps &amp; above cliffs with ongoing snowfall &amp; wind.
20-30cm of new snow is predicted Thursday night into Friday creating a storm slab condition. The rapid loading will likely increase natural activity.
Wind effect and windslab are common through the region with varied reactivity. Increasing snow load will elevate the hazard in the short term.
The incoming new snow will need some time to settle and stabilize.
Recent wind has formed windslabs in open terrain features on all aspects in the Alpine and exposed areas of TL and BTL. If triggered these wind slabs have the potential to step down to the Feb 22nd surface hoar layer.
The Feb 22nd SH is now buried 60cm+ deep, which is a likely depth for skier triggering, especially in shallower snow pack areas. Steep solar aspects harbor a crust under the surface hoar layer, which can increase the sensitivity of triggering.
Expect to find wind &amp; storm slab formation on lee aspects and open areas from the alpine to below tree line. Loose dry sluffing from steep terrain is also a concern, especially in gulleys, terrain traps and above cliffs with ongoing wind &amp; snowfall.
Avalanche activity on the basal facets has slowed down but the weakness in the snowpack remains a concern. These are hard to predict, but are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are prominent.
Expect to find wind and storm slab formation on lee aspects and open areas from the alpine to below tree line. Loose dry sluffing from steep terrain is also a concern, especially in gulleys, terrain traps &amp; above cliffs with ongoing snowfall &amp; wind.
Wind effect and windslab are common through the region with varied reactivity. Increasing snow load will elevate the hazard in the short term.
The incoming new snow will need some time to settle and stabilize.
Storm snow is hiding recently formed windslabs. Expect underlying windslab in open terrain features on all aspects in the Alpine and exposed areas of TL and BTL. If triggered these wind slabs have the potential to step down to the Feb 22nd SH layer.
The Feb 22 Surface Hoar layer is down 100cm+/- at treeline in the W end of the park and 50-80cm in the E. It is a likely depth for skier triggering, especially in shallower snow pack areas. Steep solar aspects harbor a crust under the SH layer.
Expect to find wind &amp; storm slab formation on lee aspects and open areas from the alpine to tree line. 10-15cm of fresh snow may cover these now making them more difficult to detect. Cornices should be considered suspect due to recent growth.
Sluffs will fail easily with skier traffic in steep terrain and are failing naturally in very steep terrain. Use caution in gully features or in cliffy terrain where these can have serious consequences.
With recent loading and smaller natural avalanche activity ongoing, the potential for avalanches on the basal facets is on the rise. These are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are prominent.
Wind effect and windslab are common through the region with some reactivity in the immediate lee.
Ice Climbers, be cautious in areas where loading has stressed the snowpack. Top outs and ledges may be particularity sensitive due to new snow and transport winds.
Little recent activity on this layer. More likely to initiate this layer in combination with accidently triggering a surface instability. 
Expect to find wind &amp; storm slab formation on lee aspects and open areas from the alpine to tree line. 10-15cm of fresh snow may cover these now making them more difficult to detect. Cornices should be considered suspect due to recent growth.
&nbsp; Sluffs will fail easily with skier traffic in steep terrain and are failing naturally in very steep terrain. Use caution in gully features or in cliffy terrain where these can have serious consequences.
20cm of new snow will form slabs in the alpine and treeline with moderate W winds. Dial back your terrain choices while the new snow settles out, and pay particular attention to sun exposed slopes above you - the March sun is packing a punch!
Loose dry avalanches will be prevalent out of steep rocky terrain, especially on solar aspects when the sun comes out. Ice climbers should pay particular attention to the consequence of a small avalanche coming from above.
Ice Climbers, be cautious in areas where loading has stressed the snowpack. Top outs and ledges may be particularity sensitive due to new snow and transport winds.
Wind effect and windslab are common through the region with some reactivity in the immediate lee.
Little recent activity on this layer. More likely to initiate this layer in combination with accidently triggering a surface instability.
Use caution when entering steep terrain. New storm slabs, and buried wind slabs exist in lee areas of the alpine and treeline. In steep solar terrain these may be sitting on a sun crust. Cornice exposure should be minimized due to recent growth.
Use caution when entering steep terrain. Soft new storm slabs are forming, and buried wind slabs are present in lee areas. In steep solar terrain these are sitting on buried sun crusts. Cornice exposure should also be minimized due to recent growth.
Recent snow has increased the load on the basal facets and we continue to see occasional results on this layer. Avalanches are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are the weakest.
The Feb 22 Surface Hoar/ sun crust layer is down ~100cm at TL in the W end of the park &amp; 50-80cm in the east. It's a likely depth for skier triggering in shallower snowpack areas. This problem is decreasing in probability but remains high consequence
Moderate to strong southerly winds this week have formed wind slabs in the alpine and exposed areas at treeline. If triggered, these wind slabs have the potential to step down to the Feb 22nd SH/ sun crust layer.
The Feb 22 Surface Hoar/ sun crust layer is down ~90cm at TL in the W end of the park &amp; 50-80cm in the east. It's a likely depth for skier triggering in shallower snowpack areas. This problem is decreasing in probability but remains high consequence
Unconsolidated new snow will be reactive to strong solar radiation, especially on steep, rocky features.
Moderate to strong southerly winds this week have formed wind slabs in the alpine and exposed areas at treeline. If triggered, these wind slabs have the potential to step down to the Feb 22nd SH/ sun crust layer.
This problem has transitioned from a storm slab. The wind is expected to pick up significantly on Tuesday, creating new wind slabs. Expect to find storm slabs in isolated areas as the wind increases.
Recent snow has increased the load on the basal facets and we continue to see occasional results on this layer. Avalanches are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are the weakest.
This problem has transitioned from a storm slab. The wind is expected to pick up significantly on Tuesday, creating new wind slabs. Storm slabs may slabs may linger in locations that dont see the wind.
Ice climbers be cautious in areas where loading has stressed the snowpack. Top outs and ledges may be particularity sensitive due to recent snow and transport winds.
Wind effect and windslab are common through the region with some reactivity in the immediate lee.
Little recent activity on this layer, more likely to initiate it from large loads such as cornice fall or from shallow snowpack areas.
20cm of recent snow will continue to form slabs in the alpine and treeline with 100km/h winds on Tuesday. Pay particular attention to slopes above you if the clouds part- the March sun is packing a punch!
Heavy snow fall and strong winds are forecasted for today. The developing storm slab problem will push the avalanche hazard higher throughout the day.
The February 22 Surface Hoar/ sun crust layer is down 70-110cm. Today's forecasted snowfall will add an additional load, bringing this layer closer to its tipping point. It's a likely depth for skier triggering in shallower snowpack areas.
It is possible to trigger a windslab in the immediate lee side of ridge crests, but unlikely these slabs will release naturally. Reports from today suggest the windslabs disappear once off the ridges and down onto more sheltered terrain below.
This problem is the sleeping giant who remains asleep right now until a significant change wakes the giant up again. Avalanches are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are the weakest.
Widespread wind effect in the alpine with today's wind event. Windslabs continue to build lower down in lee start zones and in cross loaded features.
Ice climbers be cautious in areas where loading has stressed the snowpack. Top outs and ledges may be particularity sensitive due to recent snow and transport winds.
Little recent activity on this layer: initiating this layer is more likely from large loads such as cornice fall or from shallow snowpack areas.
Additional snow and wind overnight on Tuesday has created localized windslabs that can be triggered by humans but seems unlikely to release naturally in the absence of a trigger. Careful route finding to get off ridges and onto smooth slopes.
25-30cm of new snow with mod/strong winds has created a widespread storm slab. Lee and cross-loaded features at upper elevations will shed this new layer easily. Unsupported slopes/terrain traps below tree-line should be treated with respect today!
The February 22 Surface Hoar/ sun crust layer is down 90-130cm. It's possibly for skier-triggering in shallower snowpack areas, but otherwise this layer will take a bigger trigger to be activated (ex avalanche in the storm slab).
It is possible to trigger a windslab in the immediate lee side of ridge crests, but unlikely these slabs will release naturally. Reports from today suggest the windslabs disappear once off the ridges and down onto more sheltered terrain below.
This problem is the sleeping giant who remains asleep right now until a significant change wakes the giant up again. Avalanches are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are the weakest.
Additional snow and wind overnight on Tuesday has created localized windslabs that can be triggered by humans but seems unlikely to release naturally in the absence of a trigger. Careful route finding to get off ridges and onto smooth slopes.
Widespread wind effect in the alpine.
Ice climbers be cautious in areas where loading has stressed the snowpack. Top outs and ledges may be particularity sensitive due to recent snow and transport winds.
2 Large avalanches observed today on this layer from past 24 hours. Initiating this layer is more likely from large loads such as cornice fall or from shallow snowpack areas.
25-30cm of recent storm snow with mod/strong winds has created a widespread storm slab. Lee and cross-loaded features at upper elevations will shed this new layer easily. Unsupported slopes/terrain traps below tree-line should be avoided.
The February 22 Surface Hoar/ sun crust layer is down 90-130cm. It's possibly for skier-triggering in shallower snowpack areas, but otherwise this layer will take a bigger trigger to be activated.
It is possible to trigger a wind slab in alpine and treeline features exposed to the wind, especially at ridge top. Forecast E/SE winds could mean reverse loading on ridge crests.&nbsp;
This problem is the sleeping giant who remains asleep right now until a significant change wakes them up again. Avalanches are most likely in areas with a thin snowpack (&lt;130cm) where the basal facets and depth hoar are the weakest.
Previous winds have created what have &quot;so far&quot; been stubborn wind slabs in alpine lees and isolated treeline features.  Increased Easterly winds Friday could develop wind slabs on slopes that are usually winward.
The wind slabs which formed earlier in the week appear to be bonding well. The forecasted new snow for Friday may well form weakly bonded wind slabs with the dramatic temperature drop and easterly winds.
There is significant loose snow clinging to rock faces and in steep alpine features. Forecasted new snow will add to this.Triggering of this snow includes wind and solar radiation. Once off and running the debris may trigger deeper instabilities.
2 Large avalanches were observed on March 11th. Initiating this layer is more likely from large loads such as cornice fall or from shallow snowpack areas. In the valley bottom the snowpack is less consolidated with less chance of large releases.
Lots of snow, lots of wind, a widespread natural avalanche cycle is expected.
Where there is no slab, expect sluffing in steep terrain.
30cm of recent snow with mod/strong winds has created a widespread storm slab. Unsupported slopes and terrain traps should be avoided. Lee and cross-loaded features will be more reactive due to the wind further promoting slab formation in these areas
The February 22 surface hoar/sun crust layer is down 90-130cm. Skier-triggering is possible in shallower areas but otherwise this layer will take a bigger trigger to be activated such as a storm slab stepping down or large load impacting the slope.
Recent snow and west winds had developed stubborn slabs at ridge crest however Thursday evening winds shifted to the N and E and are expected to increase Saturday. Expect a different loading pattern than is usual.
Use caution in thin snowpack areas averaging 150cm or less. In these areas, the basal snowpack consisting of depth hoar and facets remains weak and the overlying mid and upper snowpacks are thin enough to allow for triggering.
New wind slabs forming with mod NE winds today. Previous WSL in the week appear to be bonding well. Tightening/brittle with frigid temps
There is significant loose snow clinging to rock faces and in steep alpine features. Triggering of this snow includes human, wind and solar radiation.
2 Large avalanches were observed on March 11th. Initiating this layer is more likely from large loads such as cornice fall or from shallow snowpack areas. In the valley bottom the snowpack is less consolidated with less chance of large releases.
Recent snow and west winds had developed stubborn slabs at ridge crest however Thursday evening winds shifted to the N and E and are expected to increase Saturday. Expect a different loading pattern than is usual.
Strong N-NE winds are building fresh windslabs.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
The February 22 surface hoar/sun crust layer is down 90-130cm. Skier-triggering is possible in shallower areas but otherwise this layer will take a big trigger to be activated such as a small avalanche stepping down or large load impacting the slope.
New wind slabs forming with Strong NE winds past 36 hrs. This, in combination with basal facet issue, are producing random large destructive avalanches. 
Several natural large avalanches observed today due to the combination of rapid wind loading initiating basal facets or reloaded bed surfaces.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Mnt Athabasca ramp route ran size 3.5 today.  Impressive avalanche running into the rock basin below.
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain, especially in thin snowpack areas.
Use caution in thin snowpack areas averaging 150cm or less. In these areas, the basal snowpack layer of depth hoar and facets remains weak and the overlying mid and upper snowpacks are thin enough to allow for triggering of the deep persistent layer.
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain, especially in thin snowpack areas.
With temperatures rising rapidly this afternoon, loose snow may become reactive on steep solar aspects.
Daytime warming will increase the sensitivity of the wind slabs that formed during yesterdays strong N-NE winds. These may overlie a suncrust on steep solar aspects and possibly small surface hoar on shaded slopes.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
The February 22 surface hoar/sun crust layer is down 90-130cm. Skier-triggering is possible in shallower areas but otherwise this layer will take a big trigger to be activated such as a small avalanche stepping down or large load impacting the slope.
Previous NE winds reverse loaded alpine features North of Sask x'ing. More evident in the North bulletin area. This, in combination with basal facet issue produced a few random large destructive avalanches yesterday.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Several natural large avalanches observed yesterday due to the combination of rapid wind loading initiating basal facets or reloaded bed surfaces.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Mnt Athabasca ramp route ran size 3.5. Impressive avalanche running into the rock basin below.
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain, especially in thin snowpack areas.
Use caution in thin snowpack areas averaging 150cm or less. In these areas, the basal snowpack layer of depth hoar and facets remains weak, and the mid and upper snowpack is thin enough to allow for triggering of the deep persistent layer.
We expect to start seeing some wet loose avalanche activity on steep rocky solar slopes in the next couple days. Watch for these as possible triggers on the slopes below, and minimize exposure to this in steep gullies or on ice climbs.
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain.
We expect to start seeing some wet loose avalanche activity on steep rocky solar slopes in the next couple days. Watch for these as possible triggers on the slopes below, and minimize exposure to this in steep gullies or on ice climbs.
With temperatures rising rapidly today, the snow on solar slopes that is crusty in the morning may loose cohesion and become reactive in the afternoon.
Daytime warming will increase the sensitivity of the wind slabs that formed during the weekends strong N-NE winds. These may overlie a suncrust on steep solar aspects and possibly small surface hoar on shaded slopes.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
The February 22 surface hoar/sun crust layer is down 90-130cm. Skier-triggering is possible in shallower areas but otherwise this layer will take a big trigger to be activated such as a small avalanche stepping down or large load impacting the slope.
Previous NE winds reverse loaded alpine features North of Sask x'ing. More evident in the North bulletin area. This, in combination with basal facet issue produced a few random large destructive avalanches yesterday.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Several natural large avalanches observed yesterday due to the combination of rapid wind loading initiating basal facets or reloaded bed surfaces.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Mt Athabasca ramp route ran size 3.5. Impressive avalanche running into the rock basin below.
This problem is specific to Tuesday.
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain, especially in thin snowpack areas.
Use caution in thin snowpack areas averaging 150cm or less. In these areas the basal snowpack layer of depth hoar and facets remains weak, and the mid and upper snowpack is thin enough to allow for triggering of the deep persistent layer.
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain.
The snow on solar slopes that was crusty in the morning, will loose cohesion as temperatures rise and become reactive in the afternoon.
This layer has become mostly dormant, but skier triggering may still be possible in shallower snowpack areas.
Potential for old lingering wind slabs</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Winds have calmed to the Light range. Katabatic winds (Glacier outflow) will produce localized wind slabs. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Potential to wake up with day time warming on solar aspects
Large triggers may wake up this layer IE: Cornices in combination with day time warming
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain, especially in thin snowpack areas.
Use caution in thin snowpack areas averaging 150cm or less. In these areas the basal snowpack layer of depth hoar and facets remains weak, and the mid and upper snowpack is thin enough to allow for triggering of the deep persistent layer.
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain.
The snow on slopes facing the sun will become moist this afternoon.  Use caution on steep terrain and around terrain traps.
This layer has become mostly dormant, but skier triggering may still be possible in shallower snowpack areas.
This problem will require a large trigger, thin spots or rapid day time warming.
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain, especially in thin snowpack areas.
Use caution in thin snowpack areas averaging 150cm or less. In these areas the basal snowpack layer of depth hoar and facets remains weak, and the mid and upper snowpack is thin enough to allow for triggering of the deep persistent layer.
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain.
The snow on slopes facing the sun will become moist this afternoon. Use caution on steep terrain and around terrain traps.
This layer has become mostly dormant, but skier triggering may still be possible in shallower snowpack areas.
This problem will require a large trigger, thin spots or rapid day time warming.
Recent snow and variable wind directions (SW, N and E) have developed wind slabs in lee areas on a variety of aspects. These are beginning to bond but use caution if you encounter them in steep terrain, especially in thin snowpack areas.
Use caution in thin snowpack areas averaging 150cm or less. In these areas the basal snowpack layer of depth hoar and facets remains weak, and the mid and upper snowpack is thin enough to allow for triggering of the deep persistent layer.
Strong spring sun paired with rising freezing levels will produce loose avalanches. Start the day early and be mindful of what is above you.
Recent snow and variable wind directions have developed wind slabs in lee areas on a variety of aspects. Though these are hard to trigger remain cautious of them if you're pushing out into more committing terrain.
Moist snow has the potential to release due to the heat of the sun, entraining slopes below
This problem will require a large trigger, thin spots or rapid day time warming.
Recent snow and&nbsp; winds from variable directions have developed wind slabs in lee areas on a variety of aspects. These are generally small but remain possible to trigger.&nbsp; Use caution with them in steep terrain, especially in thin snowpack areas.
Use caution in thin snowpack areas averaging 150cm or less. In these areas the basal snowpack layer of depth hoar and facets remains weak, and the mid and upper snowpack is thin enough to allow for triggering of the deep persistent layer.
Recent snow and  winds from variable directions have developed wind slabs in lee areas on a variety of aspects. These are generally small but remain possible to trigger and require some caution in steep or committing terrain. 
Moist snow has the potential to release due to the heat of the sun, entraining slopes below
As the snow falls, it will be sitting on a variety of surfaces, from Melt freeze crusts to Scoured wind hammered and sastrugi. The bond will depend on the temperatures during the storm.
This problem will require a large trigger, thin spots, increased loading or rapid day time warming.
Recent snow and winds from variable directions have developed wind slabs in lee areas on a variety of aspects. These are generally small but remain possible to trigger. Use caution with them in steep terrain, especially in thin snowpack areas.
Use caution in thin snowpack areas averaging 150cm or less. In these areas the basal snowpack layer of depth hoar and facets remains weak, and the mid and upper snowpack is thin enough to allow for triggering of the deep persistent layer.
Recent snow and winds from variable directions have developed wind slabs in lee areas on a variety of aspects. These are generally small but remain possible to trigger and require some caution in steep or committing terrain.
Moist snow has the potential to release due to the heat of the sun, entraining slopes below
As the snow falls, it will be sitting on a variety of surfaces, from Melt freeze crusts to Scoured wind hammered and sastrugi. The bond will depend on the temperatures during the storm.
This problem will require a large trigger, thin spots, increased loading or rapid day time warming.
Incoming snow and moderate to strong SW winds Monday will create fresh wind slabs in lee areas at treeline and above. These will be possible to trigger by skiers. Avoid wind loaded areas in steep terrain, especially in thin snowpack areas.
Use caution in thin snowpack areas averaging 150cm or less. In these areas the basal snowpack layer of depth hoar and facets remains weak, and the mid and upper snowpack is thin enough to allow for triggering of the deep persistent layer.
Incoming snow and moderate to strong SW winds Monday will create fresh wind slabs in lee areas at treeline and above. These will be possible to trigger by skiers. Avoid wind loaded areas in steep terrain.
New snow and moderate winds have created small fresh wind slabs in lee areas in the alpine. These will be possible to trigger by skiers. Avoid wind loaded areas in steep terrain, especially in thin snowpack areas or narrow gullies.
Use caution in thin snowpack areas averaging 150 cm or less. In these areas the basal snowpack layer of depth hoar and facets remains weak. This has been unreactive for the last week but is still a concern in steep terrain.
New snow and moderate winds have created small fresh wind slabs in lee areas in the alpine. These will be possible to trigger by skiers. Avoid wind loaded areas in steep terrain, especially in narrow gullies.
New snow paired with moderate west winds will form windslabs. The timing of the incoming precipitation is uncertain so keep a close eye on what the weather is doing over the next few days.
Sunny skies on Thursday means loose avalanches on solar aspects. Watch for the obvious signs of moist surface snow and pinwheeling, and avoid overhead hazard, especially where cornices are involved (think Mt. Bertha).
Possibility new snow with varied consistency depending on elevation. Slabs may be limited to TL elevations but depends on condition of old surface, which is quite varied across the region.
This problem will require a large trigger, thin spots, increased loading or rapid day time warming.
Thin storm slabs will be present in immediate lee areas at ridge crest and on open, cross-loaded features. Storm slabs will pop quickly on solar aspect crusts.
Possibility new snow with varied consistency depending on elevation. Slabs may be limited to TL elevations but depends on condition of old surface, which is quite varied across the region.
This problem will require a large trigger, thin spots, increased loading or rapid day time warming.
Thin storm slabs will be present in immediate lee areas at ridge crest and on open, cross-loaded features. Storm slabs will pop quickly on solar aspect crusts.
Increasing wind from the West on Thursday will create new wind slabs in alpine lee areas.
10-15cm of new snow in the past 48 hrs appears to be bonding well to layers below. At ridge tops and on solar slopes, where crusts may be buried, this problem is of most concern.
The mid snowpack is consolidating and offers bridging strength over a weak&nbsp; base. Caution is needed in areas where the snowpack is thin.  Collapsing cornices may trigger this weakness unleashing large avalanches.
Increasing wind from the West on Thursday will create new wind slabs in alpine lee areas.
Ongoing moderate SW winds continue to build windslabs in open wind affected areas in the alpine and at treeline. In isolated areas these overly a preserved surface hoar layer.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
A High-Pressure system, warm temperatures and high Freezing Levels will invoke a loose dry avalanche problem this week @ Rogers Pass. Loose dry avalanches are possible-likely on steep S-SW aspects with rocky terrain features.
Skiers may still trigger this layer in thin spots on steep planar slopes. This layer could be most reactive in shallow snowpack areas, which are characteristically on solar aspects.
Continuing SW winds in the alpine loading lee slopes. Be cautious of local wind influences where reverse or cross loading may have occurred.
Watch for loose wet avalanches on all steep solar aspects.
The Nov. 4 is down about 50cm at tree line (2000m) and breaking down. Be careful around &quot;thin to thick&quot; areas where deep slabs could be triggered.
Wind slabs exist in exposed alpine areas from strong winds over the past week. Slabs may be more reactive with warmer temperatures and sun exposure if you are in steep lee loaded or cross loaded terrain.
The Nov 5 crust has facets growing above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few isolated avalanches on this layer so use caution in large steep terrain features.
Wind slabs exist in exposed alpine areas from strong winds over the past week. Slabs may be more reactive with warmer temperatures and sun exposure if you are in steep lee loaded or cross loaded terrain.
The Nov 5 crust has facets growing above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few isolated avalanches on this layer so use caution in large steep terrain features.
A strong inversion today will provoke a loose dry avalanche cycle @ Rogers Pass, and potentially loose wet avalanches also. These will be most likely on steep S-SW aspects with rocky terrain features, but keep your guard up on other aspects too.
Previous moderate-strong SW winds formed windslabs in open wind affected areas in the alpine and at treeline. In sheltered areas these wind slabs may overly a few preserved surface hoar layers. One buried ~10cm and the other~30-50cm.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Today's high temperatures will be a test to see if this dormant layer wakes up? We have not seen much reactivity in the last week on the Nov 5th. Heavy loads like large cornices have failed to step down to this interface recently.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Previous SW winds in the alpine loaded lee slopes. Be cautious of local wind influences where reverse or cross loading may have occurred.
The Nov. 4 is down about 50cm at tree line (2000m) and breaking down. Be careful around &quot;thin to thick&quot; areas where deep slabs could be triggered.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few isolated avalanches on this layer so use caution in large steep terrain features during warm sunny periods.
These wind slabs are slowly bonding, but may still be a problem in steep alpine terrain where the surface looks wind affected.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few isolated avalanches on this layer so use caution in large steep terrain features during warm sunny periods.
These wind slabs are slowly bonding, but may still be a problem in steep alpine terrain where the surface looks wind affected.
Warm temperatures and sun may continue to produce loose activity. This will be most likely on steep S-SW aspects with rocky terrain features although the temperature inversion is heating up non solar aspects as well
Previous moderate-strong SW winds formed windslabs in open wind affected areas in the alpine and at treeline. In sheltered areas surface hoar is preserved below these wind slabs, dn 10cm and 50cm
Warm temperatures yesterday did not produce natural activity on this layer but it is still within the triggerable range for a skier or rider in shallow areas
This problem may be difficult to perceive with the strong temperature inversion keeping temperatures relatively cool at lower elevations. Be mindful of exposure to overhead hazard.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few isolated avalanches on this layer so use caution in large steep terrain features during warm sunny periods.
These wind slabs are slowly bonding, but may still be a problem in steep alpine terrain where the surface looks wind affected.
Widespread wind effect in the alpine and exposed treeline - highly variable with laminated slabs and bare ground. Be cautious of unsupported slabs.
The Nov. 4 is down about 50cm at tree line (2000m) and breaking down. Be careful around &quot;thin to thick&quot; areas where deep slabs could be triggered.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few isolated avalanches on this layer so use caution in large steep terrain features during warm sunny periods.
These wind slabs are slowly bonding, but may still be a problem in steep alpine terrain where the surface looks wind affected.
Warm temperatures and sun may continue to produce loose activity. This will be most likely on steep S-SW aspects with rocky terrain features although the temperature inversion is heating up non-solar aspects as well
Warm temperatures yesterday did not produce natural activity on this layer but it is still within the triggerable range for a skier or rider in shallow areas.
Widespread wind effect in the alpine and exposed treeline - highly variable with laminated slabs and bare ground. Be cautious of unsupported slabs.
The Nov. 4 crust is down about 50cm at tree line (2000m) and breaking down. Be careful around &quot;thin to thick&quot; areas where deep slabs could be triggered.
These wind slabs are slowly bonding, but may still be a problem in steep loaded alpine terrain where the surface looks wind affected. Treat these areas with caution. Warm temps Saturday may also increase the likelihood of cornice failures.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few isolated avalanches on this layer so use caution in large steep terrain features during warm sunny periods.
These wind slabs are slowly bonding, but may still be a problem in steep loaded alpine terrain where the surface looks wind affected. Treat these areas with caution. Warm temps Saturday may also increase the likelihood of cornice failures.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few isolated avalanches on this layer so use caution in large steep terrain features during warm sunny periods.
Warm temperatures and sun may continue to produce loose avalanches. This will be most likely on steep S-SW aspects with rocky terrain features although the temperature inversion is heating up non-solar aspects as well
This layer is still within the triggerable range for a skier or rider in shallow areas. Loose avalanches may also gain enough mass to initiate this layer in deeper areas.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few large avalanches on this layer over the last couple of weeks. Continue to use caution in steep terrain,
These wind slabs are slowly bonding, but may still be a problem in steep loaded alpine terrain where the surface looks wind affected. Treat these areas with caution especially as inversion conditions persist.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few large avalanches on this layer over the last couple of weeks. Continue to use caution in steep terrain.
These wind slabs are slowly bonding, but may still be a problem in steep loaded alpine terrain where the surface looks wind affected. Treat these areas with caution especially as inversion conditions persist.
Widespread wind effect in the alpine and exposed treeline - highly variable with laminated slabs and bare ground. Be cautious of unsupported slabs.
The Nov. 4 crust is down about 50cm at tree line (2000m) and breaking down. Be careful around &quot;thin to thick&quot; areas where deep slabs could be triggered.
This is a low probability, high consequence scenario. This layer is still within the triggerable range for a skier or rider in shallow areas.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few large avalanches on this layer over the last couple of weeks. Continue to use caution in steep terrain,
The previous windslab has become mostly unreactive, with incoming snow and wind expect new windslabs to become a problem. Be aware of immediate lee features as this new snow comes in and be cautious as this problem grows throughout Monday and Tuesday
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have seen a few large avalanches on this layer over the last couple of weeks. Continue to use caution in steep terrain,
The previous windslab has become mostly unreactive, with incoming snow and wind expect new windslabs to become a problem. Be aware of immediate lee features as this new snow comes in and be cautious as this problem grows throughout Monday and Tuesday
Widespread wind effect in the alpine and exposed treeline - highly variable with laminated slabs and bare ground. Be cautious of unsupported slabs.
The Nov. 4 crust is down about 50cm at tree line (2000m) and breaking down. Be careful around &quot;thin to thick&quot; areas where deep slabs could be triggered. Basal weakness continues to develop and could be reactive to large loads
These won't be found until we get the main brunt of the storm. If the storm arrives earlier today and with more snow, this will bump the danger rating up a level. If it starts dumping with significant winds, reduce your exposure to overhead hazard.
This is a low probability, high consequence scenario. This layer is still within the triggerable range for a skier or rider in shallow areas, like scoured ridge-crests that are adjacent to fatter pockets.
This all depends on how much snow comes. Models show a maximum of 65 (unlikely) to 30 or less (expected). Strong winds are certain, so Tuesday is a day to spend in the forest and see how the new snow sticks to the Dec 8 layer just being buried.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. This problem has been unreactive recently but we expect it will reawaken with enough load. Stay off big terrain through this storm.
This all depends on how much snow comes. Models show a maximum of 65 (unlikely) to 30 or less (expected). Strong winds are certain, so Tuesday is a day to spend in the forest and see how the new snow sticks to the Dec 8 layer just being buried.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. This problem has been unreactive recently but we expect it will reawaken with enough load. Stay off big terrain through this storm.
Storm snow coming in with strong SW winds - may see more reactivity at treeline where new slabs are building on a weak facet layer.
The Nov. 4 crust is down about 50cm at tree line (2000m) and breaking down. Wind slabs may step down to this layer or even deeper to the basal instability creating large destructive avalanches.
The warm, heavy new snow has created a cohesive 25-40cm storm slab. It sits on widespread surface hoar (SH) or on a crust on steep solar aspects. Locations of large SH will be particularly touchy (below tree-line).
The heavy storm slab may stress the snowpack enough to trigger this deep persistent slab. If avalanches step down to this layer, expect to see very large avalanches running into the valley bottom.
There is a lot going on with this new snow, so be conservative and observe how it effects the snowpack. We have wind slab up high, storm slabs at and below treeline and lots of loose snow avalanches in cliffs and steep chutes. All on a PWL.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. No new observations since the storm, but we expect it may become more reactive with the additional load.
Recent HST is being distributed and forming wind slabs in the ALP and open TL.
The Nov. 4 crust is down up to 90cm at tree line (2000m) and breaking down. Storm slabs may step down to this layer or even deeper to the basal instability creating large destructive avalanches.
Wed storm snow will fall on top of a melt freeze crust on solar aspects, &amp; old wind slab on northerly aspects. Either way, expect the new snow to be reactive in steep terrain. Loose dry avalanches are possible if temperatures are colder than forecast
This problem is our primary concern on wednesday with high freezing levels and 5-10mm of precipitation in the forecast. Wet loose will not be an issue when the freezing levels drop on thursday.
There is a lot going on with this new snow, so be conservative and observe how it effects the snowpack. We have wind slab up high, storm slabs at and below treeline and lots of loose snow avalanches in cliffs and steep chutes. All on a PWL.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. No new observations since the storm, but we expect it may become more reactive with the additional load.
A 30-40cm cohesive storm slab has formed. It sits on widespread surface hoar (SH) or on a crust on steep solar aspects. Locations of large SH will be particularly touchy (below tree-line).
Storm slab avalanches may carry enough mass to overload the Nov 5 crust deep persistent weak layer. If this occurs expect to see  very large avalanches running to valley bottom.
The Nov. 4 crust is down 40cm to 100cm at tree line. Wind slabs may step down to this layer or even deeper to the basal instability creating large destructive avalanches.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We haven't seen any activity on this layer since the storm, but the new load may have made it more reactive in some areas.
The new snow came in with little wind and has been less reactive than expected so far. The forecasted cold temperatures and no wind should help to facet out any slabs that may be lingering over the next few days.
We have limited observations from Little Yoho so far, but suspect this layer to be more of a concern here. The surface hoar was more widespread here and there is more storm snow overlying it.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We haven't seen any activity on this layer since the storm, but the new load may have made it more reactive in some areas.
A 30cm+/- storm slab has formed. It sits on widespread modified rain crust surface hoar (SH) combo. Field tests gave mod to hard results on this layer in the west end of the park.
The Nov 5 crust layer is down 100cm+ and for the most part is unreactive. Keep this layer in mind in shallow snowpack locations at and above treeline.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We haven't seen any activity on this layer since the storm, but the new load may have made it more reactive in some areas.
It didn't seem like much wind came with this last storm, but small wind slabs have been reported over the Dec 7 layer near ridge crests in steep alpine features.
In general there is more storm snow overlying the Dec 7 layer of surface hoar, facets, and sun crust depending on aspect and elevation. In particular, there was large surface hoar noted prior to the last storm.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We haven't seen any activity on this layer since the storm, but the new load may have made it more reactive in some areas.
&nbsp; Tuesday's 40cm storm had some moderate Southwest winds which loaded some slopes into windslabs.
The Nov. 4 crust is down 60cm to 80cm at tree line. Wind slabs potentially could step down to this layer or even deeper to the basal instability creating large destructive avalanches. Caution at thick to thin snowpack areas.
Loose surface snow will slide easily on the newly formed December 9 crust, especially on steep smooth slopes (think fans below cliffs, alpine bowls, steep gully features like Akamina Lake Chutes). Many of these have already released naturally.
The Dec 7 persistent weak layer of surface hoar and crusts is down between 20 and 35cm. This is still reactive in tests and 2 natural size 2 avalanches were observed yesterday
The Nov 5 crust layer is down over 1m, it is still of concern in shallow snowpack areas
Tuesday's 40cm storm had some moderate Southwest winds which loaded some slopes into windslabs. Caution is warranted despite the lack of natural activity.
The Nov. 4 crust is down 60cm to 80cm at tree line. Triggering a wind slab could potentially step down to this deeper layer creating large destructive avalanches. Be cautious of thick to thin snowpack areas being likely trigger locations.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We haven't seen any activity on this layer since the storm, but the new load may have made it more reactive in some areas.
A lack of observation exists for this layer. Prior to the recent storm, large surface hoar was found up to tree line and sun crust was found on steep solar aspects into the alpine. Use Caution as 20-40cm of snow sits on this layer.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We haven't seen any activity on this layer since the storm, but the new load may have made it more reactive in some areas.
A 30cm+/- slab has sits on the Dec. 7th weak interface of  modified rain crust/sun crust/surface hoar (SH) combo. Field tests have given mod to hard results on this layer, but it has been the failure plane for recent slab avalanches.
Tuesday's 40cm storm had some moderate Southwest winds which loaded some slopes into windslabs. Winds have been light to calm since then but be vigilant for wind loading signs. Caution is warranted despite the lack of natural activity.
The Nov. 4 crust is down 60cm to 80cm at tree line. Triggering a wind slab could potentially step down to this deeper layer creating large destructive avalanches. Be cautious of thick to thin snowpack areas being likely trigger locations.
Increasing southwest winds will form wind slabs in lee areas that will not bond well to the underlying faceted snow above a crust. This could create potential for wide propagations.
20-40 cm of recent snow has faceted. In steep, alpine features, wind or people can start a small avalanche that will run far on the sun crust, facets or isolated surface hoar it lies on (Dec.7 layer).This trend may increase over the next few days.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have only 1 observation of a deep slab avalanche since the storm, but it is still on our minds in shallow areas.
20-40 cm of recent snow has faceted. In steep, alpine features, wind or people can start a small avalanche that will run far on the sun crust, facets or isolated surface hoar it lies on (Dec.7 layer).This trend may increase over the next few days.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have only 1 observation of a deep slab avalanche since the storm, but it is still on our minds in shallow areas.
Cold temperatures and relatively light winds in most of the park have left unconsolidated snow with enough mass to push skiers and riders around even in open terrain. Extra care is required around cliffs and confined gullies
A 30cm slab sits on the Dec 7th weak interface of rain crust/sun crust/surface hoar combo. Recent slab avalanches have failed on this layer. This layer could be more reactive in isolated terrain features that experienced more wind
Yesterday, dry loose avalanches were observed from steep alpine features. In these high consequence locations even a small avalanche could be deadly.
Be cautious of thick to thin snowpack areas being likely trigger locations. Weak facets layers near the ground continue to become weaker with these cold temperatures.
20-40 cm of recent snow is now faceted. In steep terrain, wind or people can start a small avalanche in the surface snow that will run far on the layer of facets, sun crust or surface hoar underneath it. This trend will increase over the next days.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have only had isolated observations of a deep slab avalanches since the storm, but it is still on our minds in shallow areas.
20-40 cm of recent snow is now faceted. In steep terrain, wind or people can start a small avalanche in the surface snow that will run far on the layer of facets, sun crust or surface hoar underneath it. This trend will increase over the next days.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have only had isolated observations of a deep slab avalanches since the storm, but it is still on our minds in shallow areas.
Cold temperatures and relatively light winds in most of the park have left unconsolidated snow with enough mass to push skiers and riders around in steep terrain. Extra care is required around cliffs and confined gullies.
A 30cm slab sits on the Dec 7th weak interface of rain crust/sun crust/surface hoar combo. Recent slab avalanches have failed on this layer. This layer could be more reactive in isolated terrain features that experienced more wind
Storm slabs will begin to form Tuesday with snowfall and strong westerly winds.
Be cautious of thick to thin snowpack areas being likely trigger locations. Weak facets layers near the ground continue to become weaker with these cold temperatures.
Forecasted light snow and moderate winds may form new slabs on leeward and cross-loaded terrain features. These slabs will probably not bond well to the current snow surface.
With forecasted strong wind from the SW on Tuesday there is a high likelihood that new wind slabs will start forming. There is a high degree of variability in the amounts of new snow for redistribution. Be watchful of this at the local level.
20-40 cm of recent snow is now faceted. In steep terrain, wind or people can start a small avalanche in the surface snow that will run far on the layer of facets, sun crust or surface hoar underneath it. New snow on Tues will add to this problem.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have only had isolated observations of a deep slab avalanches since the storm, but it is still on our minds in shallow areas.
With forecasted strong wind from the SW on Tuesday there is a high likelihood that new wind slabs will start forming. Up to 20cm of low density snow is currently available for redistribution in Little Yoho, with more on the way.
20-40 cm of recent snow is now faceted. In steep terrain, wind or people can start a small avalanche in the surface snow that will run far on the layer of facets, sun crust or surface hoar underneath it. New snow on Tues will add to this problem.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have only had isolated observations of a deep slab avalanches since the storm, but it is still on our minds in shallow areas.
1681A555">10-15cm of new snow has buried another surface hoar layer (The Dec 13th). A storm slab may ripen over this interface today or tomorrow, as new snow continues to fall, coupled with mod-strong wind and moderate temperatures.
Sluffing continues to be a concern with incremental loading of light new snow over a firm bed surface. Loose dry avalanches will have enough mass to push riders around in steep terrain. Extra care is required around cliffs and confined gullies.
40cm sits on the Dec 7th weak interface of rain crust/sun crust/surface hoar combo. Our developing storm slab will test this layer in the coming days.
Forecasted light snow and moderate winds may form new slabs on leeward and cross-loaded terrain features. These slabs will probably not bond well to the current snow surface.
Be cautious of thick to thin snowpack areas being likely trigger locations.
Up to 40 cm of low density and facetted surface snow is sluffing easily out of steep terrain. These avalanches are relatively small but running far and picking up mass as they go.
Moderate to strong winds forecast for Wednesday and Thursday will create fresh wind slabs.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have only had isolated observations of a deep slab avalanches since the storm, but it is still on our minds in shallow areas.
Up to 40 cm of low density and facetted surface snow is sluffing easily out of steep terrain. These avalanches are relatively small but running far and picking up mass as they go.
Moderate to strong winds forecast for Wednesday and Thursday will create fresh wind slabs.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have only had isolated observations of a deep slab avalanches since the storm, but it is still on our minds in shallow areas.
A136FBD0">Another 22cm of new snow brings our storm total to ~40cm in the last 48 hours at Treeline. Strong winds from the Sth and mild temperatures have formed storm slabs at all elevations. Storm slabs are failing on the Dec 13th Surface Hoar Layer.
Sluffing continues to be a concern with significant amounts of new snow over the last 24 hours. Loose dry avalanches will have enough mass to push riders around in steep terrain. Extra care is required around cliffs and confined gullies.
60cm sits on the Dec 7th weak interface of rain crust/sun crust/surface hoar combo. Our new storm slab could easily step down to this interface, significantly increasing the size and destructive potential.
Snow and moderate winds forming new slabs on leeward and cross-loaded terrain features. These slabs will probably not bond well to the current snow surface.
Be cautious of thick to thin snowpack areas being likely trigger locations.
Up to 40 cm of low density and facetted surface snow is sluffing easily out of steep terrain wherever it is touched by wind. These avalanches are relatively small but running far and picking up mass as they go.
So far wind slabs have been noted in the alpine, but may extend down into treeline wherever the wind has gotten to the new snow.&nbsp; Expect these to grow in size and reactivity in the coming few days.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. We have isolated observations of deep slab avalanches since the storm (including today), and is still on our mind in shallow areas.
Up to 40 cm of low density and facetted surface snow is sluffing easily out of steep terrain wherever it is touched by wind. These avalanches are relatively small but running far and picking up mass as they go.
So far wind slabs have been noted in the alpine, but may extend down into treeline wherever the wind has gotten to the new snow. Expect these to grow in size and reactivity in the coming few days.
The Nov 5 crust has facets above and below it, and exists up to 2500m on shady aspects and higher on solar aspects. This layer seems less prevalent in Little Yoho, and there is some uncertainty as to whether it is a problem in this region.
Storm snow totals are eclipsing 50cm in the last 72 hours at Treeline. Mod S-SW winds and mild temperatures have formed storm slabs at all elevations. Storm slabs are failing on the Dec 13th Surface Hoar Layer.
Sluffing continues to be a concern with significant amounts of new snow over the last 48 hours. Loose dry avalanches will have enough mass to push riders around in steep terrain. Extra care is required around cliffs and confined gullies.
70cm sits on the Dec 7th weak interface of rain crust/sun crust/surface hoar combo. Our new storm slab could easily step down to this interface, significantly increasing the size and destructive potential.
Storm slabs will become our primary concern by mid day Saturday as the new snow will stress and hide underlying wind slab. Travel in avalanche terrain is not recommended on Sunday or Monday if the weekend storm materializes as forecast.&nbsp;
Continued Strong to Extreme southwest winds have created wind slabs which sit above a crust. This could create potential for wide propagations as loading continues into this weekends storm.
New snow and moderate to strong winds forming wind slabs on leeward and cross-loaded terrain features.
Be cautious of thick to thin snowpack areas being likely trigger locations. The new windslabs forming have the potential to step down to the weakness at the base of the snowpack.
Wind slabs are expected to form at treeline and in the alpine on Friday as the winds increase and more snow arrives. There is a fair bit of potential for these to start failing naturally and even running down into lower elevations in steep terrain.
Up to 40 cm of low density and facetted surface snow is sluffing easily out of steep terrain wherever it is touched by wind. These avalanches are relatively small but running far and picking up mass as they go.
The Nov 5 crust has facets above and below it and exists up to 2500m on shady aspects and higher on solar aspects. We have isolated observations of deep slab avalanches recently but increasing wind and snow over the next three days may change this.
Wind slabs are expected to form at treeline and in the alpine on Friday as the winds increase and more snow arrives. These are likely to start failing naturally and even running down into lower elevations in steep terrain.
Up to 50 cm of low density storm snow is sluffing easily out of steep terrain wherever it is touched by wind. These avalanches are relatively small but running far and picking up mass as they go.
In thin areas, the Nov 5 crust has facets above and below it and exists up to 2500m on shady aspects and higher on solar aspects. This is not as prevalent in the Little Yoho region but we may see action in these zones over the weekend.
Storm slabs continue to build over the Dec 13 surface hoar layer. This layer, down 40cm+, was very sensitive to human and natural triggering yesterday. This layer is reactive at all three elevation bands.
70cm+ sits on the Dec 7th weak interface of rain crust/ surface hoar. If triggered the storm slab has potential to step down to this interface triggering large avalanches.
New snow and moderate to strong winds forming wind slabs on leeward and cross-loaded terrain features.
New snow may create soft slabs and be reactive on the Dec 14th layer
Be cautious of thick to thin snowpack areas being likely trigger locations. The new windslabs forming have the potential to step down to the weakness at the base of the snowpack.
Widespread wind slabs are expected in the alpine and down into treeline with arrival of strong winds and new snow Friday night. In steep avalanche paths and gullies these have the potential to run down below treeline.
The strong winds and new snow will likely cause loose dry avalanches in steep gullies and on steep faces over the weekend. These avalanches will be smaller but could run a long ways in the recent storm snow.
The Nov 5 crust has facets above and below it and exists up to 2500m on shady aspects and higher on solar aspects. We have limited observations of deep slab avalanches recently but increasing wind and snow over the next three days may change this.
Widespread wind slabs are expected in the alpine and down into treeline with arrival of strong winds and new snow Friday night. In steep avalanche paths and gullies these have the potential to run down below treeline.
The strong winds and new snow will likely cause loose dry avalanches in steep gullies and on steep faces over the weekend. These avalanches will be smaller but could run a long ways in the recent storm snow.
The Nov 5 crust has facets above and below it and exists up to 2500m on shady aspects and higher on solar aspects. We have limited observations of deep slab avalanches recently but increasing wind and snow over the next three days may change this.
The slab continues to build over the Dec 13 surface hoar/facet layer, now down 60+ cm. This layer has been sensitive to human and natural triggering and is reactive at all three elevation bands.
Last nights heavy snowfall, strong SW winds and warm temps were the perfect recipe for building fresh reactive storm slabs.
70cm+ sits on the Dec 7th weak interface of rain crust/ surface hoar. If triggered the storm slab has potential to step down to this interface triggering large avalanches.
Widespread wind slabs are expected in the alpine and down into treeline with arrival of strong winds and new snow . In steep avalanche paths and gullies these have the potential to run down below treeline entraining facets.
The strong winds and new snow will likely cause loose dry avalanches in steep gullies and on steep faces. These avalanches will be smaller but could run a long ways in the recent storm snow.
The Nov 5 crust has facets above and below it and exists up to 2500m on shady aspects and higher on solar aspects. We have limited observations of deep slab avalanches recently but increasing wind and snow over the next three days may change this.
Widespread wind slabs are expected in the alpine and down into treeline with arrival of strong winds and new snow . In steep avalanche paths and gullies these have the potential to run down below treeline entraining facets.
The strong winds and new snow will likely cause loose dry avalanches in steep gullies and on steep faces. These avalanches will be smaller but could run a long ways in the recent storm snow.
The Nov 5 crust has facets above and below it and exists up to 2500m on shady aspects and higher on solar aspects. We have limited observations of deep slab avalanches recently but increasing wind and snow in the near future may change this.
Continued Strong to Extreme westerly winds have created wind slabs which sit above a crust.
Chances of avalanches will increase if snowfall amounts exceed forecast.
New snow and moderate to strong winds forming wind slabs on leeward and cross-loaded terrain features.
New snow may be reactive on the Dec 14th layer
Be cautious of thick to thin snowpack areas being likely trigger locations. The new windslabs forming have the potential to step down to the weakness at the base of the snowpack.
Last nights heavy snowfall, strong S-SW winds and warm temps are the perfect recipe for building fresh reactive storm slabs.
1m+ sits on persistent layers of rain crust/ surface hoar/ or suncrust. Triggered storm slabs have the potential to step down to these interfaces, triggering very large avalanches.
New snow and moderate to strong winds forming wind slabs on leeward and cross-loaded terrain features.
New snow may be reactive on the Dec 14th layer and in steep terrain
Be cautious of thick to thin snowpack areas being likely trigger locations. The new windslabs forming have the potential to step down to the weakness at the base of the snowpack.
Wind slabs are expected in the alpine and down into tree line with previous strong Westerly winds and snow available for transport . In steep avalanche paths and gullies these have the potential to run down below treeline entraining facets.
The Nov 5 crust has facets above and below it and exists up to 2500m on shady aspects and higher on solar aspects. We have limited observations of deep slab avalanches recently, but the gradually increasing snow fall amounts may change this.
Wind slabs are expected in the alpine and down into tree line with previous strong Westerly winds and snow available for transport . In steep avalanche paths and gullies these have the potential to run down below treeline entraining facets.
The Nov 5 crust has facets above and below it and exists up to 2500m on shady aspects and higher on solar aspects. We have limited observations of deep slab avalanches recently, but the gradually increasing snow fall amounts may change this.
Continuing snowfall, mod/strong W'ly winds, and mild temps have created widespread, reactive storm slabs easily triggered by a person.
1m+ sits on persistent layers of rain crust/ surface hoar/ or suncrust. Storm slabs have the potential to step down to these interfaces, triggering very large avalanches.
New snow and strong to extreme winds are forming wind slabs on leeward and cross-loaded terrain features. Although we are not seeing a lot of avalanche activity with this problem, the weather has been perfect for wind slab development.
Be cautious of thick to thin snowpack areas being likely trigger locations. The new wind slabs forming have the potential to step down to the weakness at the base of the snowpack.
The new load will likely awaken the Dec. 7th surface hoar/facet/sun crust layer which is down 30 -70 cm in this area and is fairly widespread. Reign in your terrain choices!
15-20 cm is expected overnight Monday. We expect this to slide easily until it has had time to settle. These storm slabs could potentially trigger the persistent slab problem.
With the incoming snow, loose dry avalanches will run in gully features and steep terrain.
15-40 cm is expected overnight Monday. We expect this to slide easily until it has had time to settle. These storm slabs could potentially trigger the deep persistent or persistent slab problem.
The new load will likely awaken either the Nov. 5th facet/crust layer at the bottom of the snowpack or the Dec. 7th surface hoar/facet/sun crust layer ~50cm down. Stay out of avalanche terrain!
With the incoming snow, loose dry avalanches will run in gully features and steep terrain.
Approx 140cm of storm snow from the last 6 days, accompanied by strong S/SW winds and mild temps, has created widespread storm slabs at the surface. N'ly winds overnight and today will create slabs on S'ly aspects, so watch for reverse loading.
~150cm sits on persistent layers of rain crust/ surface hoar/ or suncrust. Storm slabs have the potential to step down to these interfaces, triggering very large avalanches.
Moderate NW winds have stripped previously loaded slopes and reverse loaded S-SE slopes in the Alpine and open Tree line. Caution as these freshly built wind slabs are reactive naturally in the alpine.
Be cautious of thick to thin snowpack areas being likely trigger locations. The wind slabs have the potential to step down to the weakness at the base of the snowpack.
Upslope snow dumped 30+cm in the East, and less North and West(10cm).This problem encompasses avalanches within this past weeks storm snow (~40-60cm), and ones sliding on the Dec 7 or 13th layers.These slabs seemed most reactive at treeline. Tuesday.
We have had a few observations of avalanches stepping down to the Nov. 5 crust and facets. This is a problem with higher uncertainty, and is most prevalent in shallow snowpack areas where the layer has weakened over time.
This will be more of a problem in upslope regions as it received the most snow in the last 24 hours. Increased alpine winds will keep this problem active in the short term.
Storm slabs are the primary problem Wednesday. Storm slabs may be more reactive on northerly aspects where wind has stiffened slabs. We expect this problem to transition to wind slab by the end of the week.
Variable wind direction over the forecast period means wind slab may pop up in unexpected areas. Look for wind effect at the surface and avoid exposure terrain with high consequence.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Old wind slab sits on top of the Dec 9th melt freeze crust making it a </span><a href="https://www.avalanche.ca/glossary?q=persistent#persistent-slab" target="_blank"><span class="s_9255B882">persistent slab</span></a><span class="s_AA239A9B"> The Dec 9th crust is buried 20-80cm deep at Cameron Lake. This layer has not been reactive yet, but there is a chance that the new snow will stress this weakness.
Avalanches were observed on Tuesday that likely initiated on the Dec. 7th and 13th surface hoar/facet/sun crust layers. These are located approximately 60-90cm down in the snowpack.
Storm slabs 20-30cm thick were observed on Tuesday. These will likely settle out fairly soon but if triggered can step down to deeper persistent layers.
~110cm of storm snow fell in the last week with mild temperatures and strong S/SW winds. Post storm strong Northerly winds reverse loaded southerly aspects too, so expect slab formation on all aspects especially in the alpine and exposed areas of TL.
The December 7th surface hoar/crust paired with the December 13th surface hoar has made an excellent weak layer for LARGE slab avalanches. Storm or wind slabs have lots of potential to step down to this layer.
New wind slabs started to form Wed. and will continue to build Thurs. These are mainly found in the alpine but have been reported at treeline as well. The winds have been from many different directions so slabs may be found on a variety of aspects.
We have had a few observations of avalanches stepping down to the Nov. 5 crust and facets. This is a problem with higher uncertainty, and is most prevalent in shallow snowpack areas where the layer has weakened over time.
New wind slabs started to form Wed. and will continue to build Thurs. These are mainly found in the alpine but have been reported at treeline as well. The winds have been from many different directions so slabs may be found on a variety of aspects.
Previous NW and present SW winds in the Alpine and open Tree line continue to develop wind slab all aspects. Caution as these freshly built wind slabs are reactive and waiting for a trigger.
Be cautious of thick to thin snowpack areas being likely trigger locations. The wind slabs have the potential to step down to the weakness at the base of the snowpack.
120cm of storm snow fell in the last week with mild temperatures and strong S/SW winds. Post storm strong Northerly winds reverse loaded southerly aspects too, so expect slab formation on all aspects especially in the alpine and exposed areas of TL.
The December 7th surface hoar/crust paired with the December 13th surface hoar has made an excellent weak layer for LARGE slab avalanches. Storm or wind slabs have lots of potential to step down to this layer.
New wind slabs were formed from strong SW winds on Wed and Thursday. These are mainly found in the alpine but have been reported at treeline as well. The winds have been from many different directions so slabs may be found on a variety of aspects.
We have had a few observations of avalanches stepping down to the Nov. 5 crust and facets. This is a problem with higher uncertainty, and is most prevalent in shallow snowpack areas where the layer has weakened over time.
New wind slabs were formed from strong winds on Wednesday and Thursday. These are mainly found in the alpine but have been reported at treeline as well. The winds have been from many different directions so slabs may be found on a variety of aspects.
Previous NW and present SW winds in the alpine and open tree line continue to develop wind slabs. Caution as these freshly built wind slabs are reactive and waiting for a trigger.
Be cautious of thick to thin snowpack areas being likely trigger locations. The wind slabs have the potential to step down to the weakness at the base of the snowpack.
Strong winds on Thursday have stripped windward slopes and created windslabs in lee areas. This appears to be less of a problem at treeline and below in the area immediately around Cameron Lake.
Quite a bit of uncertainty exits around the December 9 persistent weak layer in our region. It can be found down 30-80cm, and may respond to large triggers such as smaller avalanches or cornice failures in deeper areas, or humans in shallow areas.
&nbsp; 120cm of storm snow in the past week with mild temperatures and strong S/SW winds. Post storm strong N'ly winds reverse loaded S'ly aspects too, expect slab formation on all aspects in the alpine and exposed areas of TL.
The Dec 7th surface hoar/crust and Dec13th surface hoar layer continue to produce sporadic large slab avalanches. Wind slabs have lots of potential to step down to this layer.
Previous NW and present SW winds in the alpine and open tree line continue to develop wind slabs. Caution as these freshly built wind slabs are reactive and waiting for a trigger.
Be cautious of thick to thin snowpack areas being likely trigger locations. The wind slabs have the potential to step down to the weakness at the base of the snowpack.
New wind slabs were formed from strong SW-W winds on Wed into Friday. These are mainly found in the alpine but have been reported at tree line as well.
We have had a few observations of avalanches stepping down to the Nov. 5 crust and facets. This is a problem with higher uncertainty, and is most prevalent in shallow snowpack areas where the layer has weakened over time.
New wind slabs were formed from strong SW-W winds on Wednesday into Friday. These are mainly found in the alpine but have been reported at tree line as well.
120cm of storm snow in the past week with mild temperatures and strong S/SW winds. Post storm strong N'ly winds reverse loaded S'ly aspects too, expect slab formation on all aspects in the alpine and exposed areas of TL.
The Dec 7th surface hoar/crust and Dec 13th surface hoar layers have produced very large avalanches this past week, up to size 4! Wind slabs have the potential to step down to this layer.
Winds in the alpine and open tree line locations continue to develop wind slabs. Caution as these wind slabs appear to be stubborn, are localized, and are suspect to be susceptible to human triggering particularly high alpine ridgetop features.
Be cautious of thick to thin snowpack areas being likely trigger locations. The wind slabs have the potential to step down to the weakness at the base of the snowpack.
Wind slabs were formed by strong SW-W winds Wednesday through Friday.&nbsp; While these are becoming buried with new snow, expect to find small, spotty slabs as you enter open areas at Tree Line and to encounter more developed slabs and in the Alpine.
We have had a few observations of avalanches stepping down to the Nov. 5 crust and facets. This is a problem with higher uncertainty, and is most prevalent in shallow snowpack areas where the layer has weakened over time.
Wind slabs were formed by strong SW-W winds Wednesday through Friday. While these are becoming buried with new snow, expect to find small, spotty slabs as you enter open areas at Tree Line and to encounter more developed slabs and in the Alpine.
Slough management is necessary on steeper, open slopes. Initiated loose dry slides are gathering enough mass to push a skier or rider over, or even bury one in a terrain trap. Manage your group carefully to enjoy the new snow!
The Dec 7th surface hoar/crust and Dec 13th surface hoar layers have produced very large avalanches this past week, up to size 4! Although low in probability, the consequences are very high.
Windslabs have formed on all aspects this past week due to SW flow during the storm and reverse N'ly winds after. These windslabs are likely loosing their sensitivity, however some reactive pockets may linger in isolated locations near ridge crests.
Wind slabs were formed by strong SW-W winds Wednesday through Friday. While these have become buried with new snow, expect to find small, spotty slabs as you enter open areas at Tree Line and to encounter more developed slabs in the Alpine.
We have had a few observations of avalanches stepping down to the Nov. 5 crust and facets. This is a problem with higher uncertainty, and is most prevalent in shallow snowpack areas where the layer has weakened over time.
Wind slabs were formed by strong SW-W winds Wednesday through Friday. While these are now buried with new snow, expect to find small, spotty slabs as you enter open areas at Tree Line and into the Alpine.
Strong winds have stripped windward slopes and created windslabs in lee areas. This appears to be less of a problem at treeline and below in the area immediately around Cameron Lake.
Uncertainty still exists around the December 9 persistent weak layer in our region. It can be found down 30-80cm, and may respond to large triggers such as smaller avalanches or cornice failures in deeper areas, or humans in shallow areas.
New wind slabs will take time to stabilize. Use caution when heading to wind prone locations.
Be cautious of thick to thin snowpack areas being likely trigger locations. The wind slabs or persistent slabs have the potential to step down to the weakness at the base of the snowpack.
Slough management is necessary on steeper, open slopes. Initiated loose dry slides are gathering enough mass to push a skier or rider over, or even bury one in a terrain trap. Manage your group carefully to enjoy the new snow!
The Dec 7th and Dec 13t layers produced very large avalanches last week, up to size 4! One of these very large avalanches, from a South aspect at Treeline, had the Dec 7th interface as the failure plane which consisted of a crust with facets above.
In the alpine hard slabs sit overtop of facets. Dec 14th surface hoar to 6mm can be found in sheltered locations up to 2000m and is reactive to skier traffic.
Be cautious of thick to thin snowpack areas being likely trigger locations. The wind slabs or persistent slabs have the potential to step down to the weakness at the base of the snowpack.
Recently formed windslabs are now buried with new snow. Expect to find small, spotty slabs as you enter open areas at Tree Line and to encounter more developed slabs in the Alpine.
This problem appears to be dormant during the current few days, but should remain on everyone's radar. It will reawaken with the next storm or significant weather change.
Old windslab formed last week are are now buried with new snow, expect to find small, spotty slabs as you enter open areas at Tree Line and into the Alpine.
Watch for pockets of storm slab in immediate lees Tuesday. Expect this problem to become more widespread and destructive with Wednesdays snow and wind.
Slough management is necessary on steeper, open slopes. Loose dry slides are gathering enough mass to push a skier or rider over, or even bury one in a terrain trap.
The Dec 7th and Dec 13t layers produced very large avalanches last week, up to size 4! One of these very large avalanches, from a South aspect at Treeline, had the Dec 7th interface as the failure plane which consisted of a crust with facets above.
In the alpine hard slabs sit overtop of facets. Dec 14th surface hoar to 6mm can be found in sheltered locations up to 2200m.
Be cautious of thick to thin snowpack areas being likely trigger locations. The persistent slabs have the potential to step down to the weakness at the base of the snowpack.
Windslabs could respond to human traffic in steep unsupported features, or thin areas where they sit on basal facets.
We are reluctant to put much trust in deeper weak layers. The December 9 Crust/facet combo can be found down 30-80cm, and may respond to large triggers such as smaller avalanches or cornice failures. Basal facets are also on our radar in thin areas.
Small windslabs might be found in steep, unsupported terrain in alpine areas. Use ski cuts to check locations before committing, the conditions are stable now but the odd windslab keeps getting reported.
This problem appears to be dormant during the current few days, but should remain on everyone's radar. It will reawaken with the next storm or significant weather change.
Small windslabs might be found in steep, unsupported terrain in alpine areas. Use ski cuts to check locations before committing, the conditions are stable now but the odd windslab keeps getting reported.
Approximately 25cm of new snow has fallen over the last few days, burying another surface hoar layer in specific locations. The new snow will morph into a storm slab with the added load of new snow and warm temperatures in the coming days.
The Dec 7th and Dec 13t layers produced very large avalanches last week, up to size 4! One of these very large avalanches, from a South aspect at Treeline, had the Dec 7th interface as the failure plane which consisted of a crust with facets above.
In the alpine hard slabs sit overtop of facets. Dec 14th surface hoar to 6mm can be found in sheltered locations up to 2200m.
Be cautious of thick to thin snowpack areas being likely trigger locations. The persistent slabs have the potential to step down to the weakness at the base of the snowpack.
Small windslabs might be found in steep, unsupported terrain in alpine areas. Use ski cuts to check locations before committing, the conditions are stable now but the odd windslab keeps getting reported.
Small windslabs might be found in steep, unsupported terrain in alpine areas. Use ski cuts to check locations before committing, the conditions are stable now but the odd windslab keeps getting reported.
Approx 20-30cm of new snow has fallen over the last few days, burying another surface hoar layer (Dec 25th) in specific locations. Storm slabs may have already developed in isolated areas in the alpine and exposed areas of upper TL.
The early december surface hoar layers are now buried ~1m deep. The avalanche problem is now a classic low likelihood, high consequence scenario. Steep solar aspects and thin snowpack areas is the most likely place to trigger this layer.
The incoming new snow and high winds will form new slabs in most areas beginning on Saturday, and we expect to see a natural avalanche cycle. This will be a good time to avoid all avalanche terrain.
Conflicted weather models are calling for anywhere between 40-80cm of snow, which could easily overload buried persistent weak layers and trigger large avalanches. This will be a good test of the snowpack, but not a good time to be in it.
In the alpine hard slabs sit overtop of facets. Dec 14th surface hoar to 6mm can be found in sheltered locations up to 2200m.
Be cautious of thick to thin snowpack areas being likely trigger locations. The persistent slabs have the potential to step down to the weakness at the base of the snowpack.
Recent light snowfall has started to add up, and as winds start to blow, new wind slabs have started to form. Expect these to develop quickly Friday in open areas treeline and above. Watch for the potential of natural activity in alpine terrain.
Recent light snowfall has started to add up, and as winds start to blow, new wind slabs have started to form. Expect these to develop quickly Friday in open areas treeline and above. Watch for the potential of natural activity in alpine terrain.
Storm snow is building up with more due today and tonight, watch for slab development especially in lee areas and use caution where the Dec 26 surface hoar may be preserved
The early december surface hoar layers are now buried over 1m deep. The avalanche problem is now a classic low likelihood, high consequence scenario. Steep solar aspects and thin snowpack areas are the most likely places to trigger this layer.
Recent strong southwesterly winds are creating new wind slabs reactive to human triggering.
The accumulating snow has the potential to form storm slabs at all elevations, potentially overloading deeper layers in the snowpack. The strong SW winds will build wind slabs in the alpine and in open areas at tree line.
This problem will progress as the snow continues to fall and will be an issue in steep, confined terrain features in the alpine and down below tree line.
The accumulating snow has the potential to form storm slabs at all elevations, potentially overloading deeper layers in the snowpack. The strong SW winds will build wind slabs in the alpine and in open areas at tree line.
This problem will progress as the snow continues to fall and will be an issue in steep, confined terrain features in the alpine and down below tree line.
50cm storm slabs have formed since yesterday morning and are reported as touchy, pulling out even at low elevations yesterday afternoon. The Dec 26 surface hoar is most likely to be preserved below this slab in forest glades at treeline and below
The additional snow load due today may be enough to trigger the early december weak layers which are now buried over 1m deep. Field tests yesterday still showed the deeper layer still has the potential for skier triggering even at its current depth.
Recent new snow and southwesterly winds are creating new wind slabs reactive to human triggering.
New snow and warm temperatures could create soft slabs that might be reactive&nbsp;
The forecasted snow and winds has the potential to form storm slabs at all elevation which will be sitting on a variety of surfaces. We don't believe this new load will significantly wake up the deeper weak layers, but there is some uncertainty.
This problem will progress as the snow continues to fall and will be an issue in steep, confined terrain features at all elevations.
The forecasted snow and winds has the potential to form storm slabs at all elevation which will be sitting on a variety of surfaces. We don't believe this new load will significantly wake up the deeper weak layers, but there is some uncertainty.
This problem will progress as the snow continues to fall and will be an issue in steep, confined terrain features at all elevations.
Heavy snowfall yesterday, accompanied by strong-extreme SW wind, has built thick storm slabs in all open terrain.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">A Dec 26 surface hoar may persist below this slab in forest glades at treeline and below.
New snow, strong winds and warm temps are a perfect recipe for cornice growth. These could trigger the storm and persistent slabs below.
The additional snow load may be enough to trigger the early december weak layers which are now buried over 1m deep. Field tests last week continued to show these deeper layers still have the potential for skier triggering even at their current depth.
Strong winds and new snow have formed wind slabs at treeline and in the alpine. Skiers are likely to trigger these wind slabs in immediate lee areas. Continued strong alpine winds may also trigger cornice failures so avoid exposure to this hazard.
With continued strong winds moving the recent snow around, we expect sluffing and dry loose avalanches in steep gullies and faces. This is especially a concern in ice climbing terrain with higher elevation start zones and narrow couloirs.
Strong winds and new snow have formed wind slabs at treeline and in the alpine. Skiers are likely to trigger these wind slabs in immediate lee areas. Continued strong alpine winds may also trigger cornice failures so avoid exposure to this hazard.
With continued strong winds moving the recent snow around, we expect sluffing and dry loose avalanches in steep gullies and faces. This is especially a concern in ice climbing terrain with higher elevation start zones and narrow couloirs.
Recent new snow 45cm and southwesterly winds are creating new wind slabs that are primed for human triggering.
During avalanche control today on highway 93N, Several avalanches stepped down to basal weakness. This is the first time we have seen the basal weakness fail this season. Caution!
Steep rocky faces, slopes above gully's all hold enough snow to sluff off and bury you deeply if caught in a terrain trap. Caution in these area's
Heavy snowfall over the weekend, accompanied by strong-extreme SW wind, has built thick storm slabs in all open terrain.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">A Dec 26 surface hoar layer may persist below this slab in sheltered areas at treeline and below.
Cornices have grown significantly this weekend and may be further tested as winds spike this afternoon. These could trigger the storm and persistent slabs below.
Avalanche activity this weekend shows that large triggers (such as cornices and storm slabs) could still cause very large avalanches on these layers.
Wind slabs will need a few days to heal.
Use caution around thin to thick areas where buried weak layers could be triggered.
Steep rocky faces and slopes above gulleys hold enough snow to sluff off and bury you deeply if caught in a terrain trap.
Strong winds and recent snow have formed wind slabs in lee areas at treeline and in the alpine. The likelihood of triggering these is slowly going down, but it is a good idea to avoid travel on or under steep loaded terrain for the next couple days.
The extreme SW wind that accompanied last weekend storm has created loaded pockets low in alpine start zones.
Strong winds and recent snow have formed wind slabs in lee areas at treeline and in the alpine. The likelihood of triggering these is slowly going down, but it is a good idea to avoid travel on or under steep loaded terrain for the next couple days.
Heavy snowfall over the weekend, accompanied by strong-extreme SW wind, has built thick storm slabs in all open terrain.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">A Dec 26 surface hoar layer persists below this slab, 50-70cm deep, in sheltered areas at treeline and below.
Avalanche activity this weekend shows that large triggers (such as cornices and storm slabs) could still cause very large avalanches on these layers.
Consistent strong SW winds continue to form wind slabs treeline and above.&nbsp;
Use caution around thin to thick areas where buried weak layers could be triggered.
Strong winds and recent snow have formed wind slabs in lee areas at treeline and in the alpine. The likelihood of triggering these is slowly going down, but it is a good idea to avoid travel on or under steep loaded terrain for the next couple days.
Strong winds and recent snow have formed wind slabs in lee areas at treeline and in the alpine. The likelihood of triggering these is slowly going down, but it is a good idea to avoid travel on or under steep loaded terrain for the next couple days.
90cm of snow in the last 4 days, SW winds, and mild temps have built a widespread storm slab. A Dec 26 surface hoar layer persists below this slab, 70-90cm deep, in sheltered areas at treeline and below.
Avalanche activity this weekend shows that large triggers (such as cornices and storm slabs) could still cause very large avalanches on these layers. These lower layers could wake up with a storm slab overloading them.
Plenty of loose snow exists in sheltered locations at and below treeline. Skier triggered sluffs have the potential to collect significant mass and bury a person in a terrain trap. Sluff management is essential today.
Strong winds and recent snow have formed wind slabs in lee areas at treeline and in the alpine. The likelihood of triggering these is slowly going down, but it is a good idea to avoid travel on or under steep loaded terrain for the next couple days.
Strong winds and recent snow have formed wind slabs in lee areas at treeline and in the alpine. The likelihood of triggering these is slowly going down, but it is a good idea to avoid travel on or under steep loaded terrain for the next couple days.
Although we are getting a brief break from the wind in the forecast, wind slabs will linger in NW to SE terrain.
Warm daytime temperatures may make cornices more reactive Thursday and Friday.
Consistent strong SW winds continue to form wind slabs treeline and above. They appear to be stubborn but be vigilant.
90cm of new snow fell in the last storm, accompanied by SW winds, and mild temps. These conditions built storm slabs in the alpine and exposed areas of TL. A Dec 26 surface hoar layer persists below this slab, in sheltered areas @ treeline and below.
Avalanche activity this weekend shows that large triggers (such as cornices and storm slabs) could still cause very large avalanches on these layers. These lower layers could wake up with a storm slab overloading them.
Periodic SW winds continue to form wind slabs treeline and above. They appear to be stubborn with no natural activity observed the past 3 days but be vigilant for human triggering to remain possible.&nbsp;
When the snowpack is thick, this weakness should be well bridged and less susceptible to triggering.&nbsp; Triggering this deep layer would be low probability but high consequence.
Strong winds and recent snow have formed wind slabs in lee areas at treeline and in the alpine. We expect natural activity to slow down now that the winds have stopped but the potential for skier triggering may remain elevated in steep terrain.
The recent snow was failing naturally Thursday on solar terrain. This may persist Friday and may be influenced by a temperature inversion. This would be serious for skiers and climbers in confined features or terrain with associated terrain traps.
Strong winds and recent snow have formed wind slabs in lee areas at treeline and in the alpine. We expect natural activity to slow down now that the winds have stopped but the potential for skier triggering may remain elevated in steep terrain.
The recent snow was failing naturally Thursday on solar terrain. This may persist Friday and may be influenced by a temperature inversion. This would be serious for skiers and climbers in confined features or terrain with associated terrain traps.
Our latest surface hoar layer (Dec 26th) is now buried ~90cm below the surface. If triggered, these layers have the potential to step down to the early December Persistent Weak Layers.
Mod-strong winds during the last storm, and down flow winds has built wind slabs in exposed terrain features in the Alpine and exposed areas of Tree Line. These slabs have the potential to step down to the Dec 26th layer.
Another day of sunny skies and light wind will likely trigger another loose dry cycle in steep to extreme terrain, on solar aspects this afternoon.
Periodic SW winds continue to form wind slabs treeline and above. They appear to be stubborn with no natural activity observed the past 4 days but be vigilant for human triggering to remain possible.
When the snowpack is thick, this weakness should be well bridged and less susceptible to triggering. Triggering this deep layer would be low probability but high consequence.
A spotty layer of stellars and surface hoar 25-50 cm down is most likely an issue in steep treeline terrain, but is present in some alpine locations. Two other layers from Dec persist and still produce hard sudden planar results.
Previous winds have created slabs, however recent observations have only found them in specific alpine areas, and haven't been very reactive. Watch locally on your trip for slab formation. Some of these slabs will be buried under new snow.
A spotty layer of stellars and surface hoar 25-50 cm down is most likely an issue in steep treeline terrain, but is present below treeline and some alpine locations. Two other layers from Dec persist and still produce hard sudden planar results.
Previous winds have created slabs, however recent observations have only found them in specific alpine areas, and haven't been very reactive. Watch locally on your trip for slab formation. Some of these slabs will be buried under new snow.
SW wind during the last storm has formed wind slabs in exposed terrain features in the Alpine and exposed areas of Tree Line. There have been several close calls recently involving windslabs in high consequence terrain in the surrounding area
A spotty layer of stellars and surface hoar 25-50 cm down is most likely an issue in steep treeline terrain, but is present in some alpine locations. Two other layers from Dec persist and still produce hard sudden planar results.
Previous winds have created slabs, however recent observations have only found them in specific alpine areas, and haven't been very reactive. Watch locally on your trip for slab formation. Some of these slabs will be buried under new snow.
A spotty layer of stellars and surface hoar 25-50 cm down is most likely an issue in steep treeline terrain, but is present below treeline and some alpine locations. Two other layers from Dec persist and still produce hard sudden planar results.
Previous winds have created slabs, however recent observations have only found them in specific alpine areas, and haven't been very reactive. Watch locally on your trip for slab formation. Some of these slabs will be buried under new snow.
Windslabs continue to be a problem in immediate lee and cross loaded features. If triggered they may have the potential to step down to deeper weak layers
Deep weak layers are sporadically waking up in surrounding areas causing large avalanches. Take a conservative approach to terrain, and avoid passing under large slopes; particularly those capped by cornices.
Periodic SW winds continue to form wind slabs treeline and above. They appear to be stubborn with no natural activity observed the past 4 days but be vigilant for human triggering to remain possible. Most caution in the high alpine.
When the snowpack is thick, this weakness should be well bridged and less susceptible to triggering. Triggering this deep layer would be low probability but high consequence.
SW wind during the last storm has formed wind slabs in exposed terrain features in the Alpine and exposed areas of Tree Line. There have been several close calls recently involving windslabs in high consequence terrain in the surrounding area
Previous winds have created slabs, however recent observations have only found them in specific alpine areas, and haven't been very reactive. Watch locally on your trip for slab formation. Some of these slabs will be buried under new snow.
A spotty layer of stellars and surface hoar 25-50 cm down is most likely an issue in steep treeline terrain, but is present in some alpine locations. Two other layers from Dec persist and still produce hard sudden planar results.
Ongoing Strong to Extreme SW winds continue to form wind slabs at treeline and above. They appear to be stubborn with&nbsp; only a few natural avalanches observed in the past 4 days, but be vigilant for human triggering.
When the snowpack is thick, this weakness should be well bridged and less susceptible to triggering. Triggering this deep layer would be low probability but high consequence.
Previous winds have created slabs, however recent observations have only found them in specific alpine areas, and haven't been very reactive. Watch locally on your trip for slab formation. Some of these slabs will be buried under new snow.
A spotty layer of stellars and surface hoar 25-50 cm down is most likely an issue in steep treeline terrain, but is present in some alpine locations. Two other layers from Dec persist and still produce hard sudden planar results.
Small pockets of windslab linger in isolated lee features.  These will increase in size quickly with the incoming storm.
Snowfall, wind and warm temps will build storm slabs on Tuesday.
Ongoing Strong to Extreme SW winds continue to form wind slabs at treeline and above. They appear to be stubborn with only a few natural avalanches observed but, be vigilant as likelihood of human triggering is rising with new precipitation.
As the storm arrives Tuesday we expect new wind slabs to form in the alpine. On Tuesday these will likely remain small and somewhat difficult to trigger but as more snow arrives this problem will increase in size and become easier to trigger.
As the storm arrives Tuesday we expect new wind slabs to form in the alpine. On Tuesday these will likely remain small and somewhat difficult to trigger but as more snow arrives this problem will increase in size and become easier to trigger.
Windslabs exist in isolated lee features. These will increase in size quickly with the incoming storm.
Snowfall, wind and warm temps will build storm slabs today and tonight. These will not likely bond well to the underlying surface hoar and/or sun/rain crust.
Wind slab developing on lee aspects in the alpine and open tree line; storm slab building all aspects tree line and below. January 12 interface includes previous hard slab in the alpine and patchy surface hoar sheltered tree line and below tree line.
Ice climbers be wary of this problem as even small avalanches can have serious consequences. Wet loose in steep terrain below treeline may also become a problem depending on the freezing level and potential rainfall.
Use caution around thin to thick areas where buried deeper weak layers could be triggered. The surface hoar layer down 40-70cm seems unreactive and spotty distribution but keep it on your radar especially with the new snow load.
New snow combined with strong winds will form reactive slabs. As the wind switches to northerly on Thursday, we will see reverse loading with wind slabs forming outside of usual lee features.
We still have a concern for persistent weak layers as the snowpack adjusts to its new load. These could be triggered by cornice fall, a smaller avalanche stepping down, or a human in thin snowpack areas.
We expect 20-40 cm with strong SSW wind. The snow will quickly form both storm and wind slabs with the influence of warm temperatures. The storm snow is not expect to bond well to the underlying surface of facets or surface hoar.
Expect loose dry avalanches off steep terrain tomorrow as the new snow will sluff easily and may trigger a slab avalanche on the slopes below.
We expect 20-40 cm with strong SSW wind. The snow will quickly form both storm and wind slabs with the influence of warm temperatures. The storm snow is not expect to bond well to the underlying surface of facets or surface hoar.
Expect loose dry avalanches off steep terrain tomorrow as the new snow will sluff easily and may trigger a slab avalanche on the slopes below.
Snowfall, wind and warm temps have formed storm slabs overnight. These heavy slabs are failing on the underlying layers and there is an active avalanche cycle underway.
Warm temperatures, strong winds and 15-40 cm of new snow over the last 24 hours has created a storm slab that was touchy on Wed. Benign weather over the next few days will promote bonding, but there is a spotty weak layer buried under the new snow
15-40 cm of recent snow will take a few days to settle out. It will sluff easily with any input (wind or climber/skiier) for a day or two.
Warm temperatures, strong winds and 15-40 cm of new snow over the last 24 hours has created a storm slab that was touchy on Wed. Benign weather over the next few days will promote bonding, but there is a spotty weak layer buried under the new snow
15-40 cm of recent snow will take a few days to settle out. It will sluff easily with any input (wind or climber/skiier) for a day or two.
Soft slabs on lee aspects in the alpine and open tree line; storm slab building all aspects tree line and below. January 12 interface includes previous hard slab in the alpine and patchy surface hoar sheltered tree line and below tree line.
Ice climbers be wary of this problem as even small avalanches can have serious consequences. Wet loose in steep terrain below treeline may also become a problem depending on the freezing level and potential rainfall.
Use caution around thin to thick areas where buried deeper weak layers could be triggered. The surface hoar layer down 40-70cm seems unreactive and spotty distribution but keep it on your radar especially with the new snow load.
New snow combined with strong winds has formed reactive slabs. As the wind switches to northerly on Thursday, we will see reverse loading with wind slabs forming outside of usual lee features.
Added load from the recent storm could increase the possibility of triggering deeper weak layers in thin snowpack areas. They could also be triggered by cornice fall or smaller avalanches stepping down in thicker snowpack areas.
Wind, warmth and heavy snowfall have formed widespread storm slab. Human triggering should be front of mind today even with cooler temps.
The recent 15-40cm of new snow and strong SW winds will be forming wind slab in exposed areas and have the potential to step down to deeper layers in the snowpack.
The recent 15-40cm of new snow and strong SW winds will be forming wind slab in exposed areas and have the potential to step down to deeper layers in the snowpack.
New snow combined with strong winds has formed slabs which will take time to heal. Choose conservative terrain.
Isolated persistent slab avalanches were observed after the last storm. This a reminder that they can still be triggered by cornice fall or smaller avalanches stepping down in thin snowpack areas.
Wind slabs mainly on but not limited to lee aspects in the alpine and open tree line from the 40-50cm storm snow and current winds. It is highly variable in the alpine. Caution thick to thin locations being ripe for human triggering.
Ice climbers be wary of this problem as even small avalanches can quickly gain volume and have serious consequences. The storm slow remains loose and unconsolidated. Watch for triggers that would wake this problem up such as rising temperatures.
Use caution around thin to thick areas where buried deeper weak layers could be triggered. The surface hoar layer down 40-70cm seems unreactive and spotty distribution but keep it on your radar especially with the new snow 50cm load.
Recent heavy snowfall accompanied by strong S-W winds have formed widespread storm slab. The Jan 10 surface hoar layer underlies the storm slab in protected locations. We are still gathering info on the distribution of this weak layer.
Continued strong westerly winds in the alpine and exposed treeline have redistributed the snow well down into the terrain.&nbsp;
Ice climbers be wary of this problem as even small avalanches can quickly gain volume and have serious consequences. The storm slow remains loose and unconsolidated. Watch for triggers that would wake this up such as rising temperatures and wind.
Use caution around thin to thick areas where buried deeper weak layers could be triggered.
The recent 15-40cm of snow has been redistributed by Mod to Strg SW winds forming wind slabs in the alpine and into open areas at treeline. Winds do not look to be diminishing, and a shift in direction could allow for further development.
The recent 15-40cm of snow has been redistributed by Mod to Strong SW winds forming wind slabs in the alpine and into open areas at treeline. Winds do not look to be diminishing, and a shift in direction could allow for further development.
The strong to extreme S-W winds that accompanied the recent storm has left wind slabs on lee features. Many of these slabs have lost their energy, however some are still able to be triggered in isolated pockets.
Continued light and moderate westerly winds in the alpine and exposed treeline have redistributed the snow well down into the terrain.
Use caution around thin to thick areas where buried deeper weak layers could be triggered.
Ice climbers be wary of this problem as even small avalanches can quickly gain volume and have serious consequences. The storm snow remains loose and unconsolidated. Watch for triggers that would wake this up such as rising temperatures and wind.
Wind slabs are present in steep lee areas in the alpine and exposed treeline ridges. These are becoming more difficult to trigger but treat lee loaded areas with extra caution especially if entering large steep terrain features. 
Wind slabs are present in steep lee areas in the alpine and exposed treeline ridges. These are becoming more difficult to trigger but treat lee loaded areas with extra caution especially if entering large steep terrain features.
10-15cm of new snow overlays a sun crust on steep solar aspects, and surface facets on northerly aspects. If triggered, these avalanches may run quickly and gather enough mass to push around a skier or rider.
Previous and continued moderate westerly winds in the alpine and exposed treeline have redistributed the snow well down into the terrain.
Use caution around thin to thick areas. Keep an eye out for surface hoar in isolated sheltered locations below treeline. A Dec weak layer exists in West facing alpine features and could be reactive to human traffic, wind loading and solar input.
Wind slabs are present in steep lee areas in the alpine and exposed treeline ridges. These are becoming more difficult to trigger but treat lee loaded areas with extra caution especially if entering large steep terrain features.
Wind slabs are present in steep lee areas in the alpine and exposed treeline ridges. These are becoming more difficult to trigger but treat lee loaded areas with extra caution especially if entering large steep terrain features.
Moderate S'ly winds have been blowing for the last 36hrs, forming soft wind slabs in the immediate lee features at alpine and tree-line elevations. If ridge features like cornices have sharp edges to them, be suspect of their fragility.
15-20cm of new snow overlays a sun crust on steep solar aspects, and surface facets on northerly aspects. If triggered, these avalanches may run quickly and gather enough mass to push around a skier or rider.
Previous moderate to strong westerly winds in the alpine and exposed treeline have redistributed the snow well down into the terrain.
Use caution around thin to thick areas. Keep an eye out for surface hoar in isolated sheltered locations below treeline. A Dec weak layer exists in West facing alpine features and could be reactive to human traffic, wind loading and solar input.
Winds Tuesday will add to the wind slabs present in steep lee areas, but there may be little snow left to transport. Treat lee loaded areas with extra caution especially if entering large steep terrain features.
Winds Tuesday will add to the wind slabs present in steep lee areas, but there may be little snow left to transport. Treat lee loaded areas with extra caution especially if entering large steep terrain features.
Cooling temperatures have stiffened recently formed wind slabs. These stubborn wind slabs may be difficult to trigger, but the consequence would be large as stiff wind slabs will propagate far if initiated.
Isolated persistent slab avalanches were observed after the last storm. This a reminder that they can still be triggered by cornice fall or smaller avalanches stepping down in thin snowpack areas.
Isolated soft slab in immediate alpine and tree-line lee features is present where winds previously blew. Use caution when entering your line and be aware of a change in the snow texture.
Fast sluffing of loose, dry powder can be powerful enough to knock over a person or bury them in a terrain trap. Be aware of your sluff when in steeper, more confined terrain.
Winds Tuesday overnight will add to the wind slabs present in steep lee areas, but there may be little snow left to transport. Treat lee loaded areas with extra caution especially if entering large steep terrain features.
Winds Tuesday overnight will add to the wind slabs present in steep lee areas, but there may be little snow left to transport. Treat lee loaded areas with extra caution especially if entering large steep terrain features.
Strong to extreme southwest winds continue to redistribute the snow well down into the terrain.&nbsp; Look for newly formed wind slab in non typical places lower in lee start zones and be wary of cross loading.
Use caution around thin to thick areas. Keep an eye out for surface hoar in isolated sheltered locations below treeline. A Dec weak layer exists in West facing alpine features and could be reactive to human traffic, wind loading and solar input.
Moderate wind yesterday + strong to extreme winds last night, have built wind slabs in immediate alpine and tree-line lee features. This new layer is sitting on a variety of surfaces from isolated SH and sun crusts to low-density settling storm snow.
Strong to Extreme winds redistributed 10cm of snow into immediate lee windslabs. Treat lee loaded areas with extra caution especially if entering large steep terrain features.
Strong to Extreme winds redistributed 10cm of snow into immediate lee windslabs. Treat lee loaded areas with extra caution especially if entering large steep terrain features.
Previous strong winds have resulted in wind slab formation in open terrain at all elevations. Look for wind slabs in non typical places lower in lee start zones and be wary of cross loading.
Use caution around thin to thick areas. Keep an eye out for surface hoar in isolated sheltered locations below treeline.
Winds on Tuesday evening reached over 140km/h at Macdonald West Shoulder! This predominantly left behind wind scoured surfaces, and wind slabs in isolated terrain features.
Previous strong southwesterly winds have resulted in wind slab formation in open terrain features at all elevations. Be most wary of where slab has built over shallow areas, on unsupported slopes, and on steeper solar aspects.
Use caution around thin to thick areas. Keep an eye out for surface hoar in isolated sheltered locations below treeline.
Wind slabs remain a problem in steep alpine features. Take the time to evaluate changes in the snowpack as you leave the trees.
Extreme winds on Tuesday night blasted most alpine terrain and expect some lingering, isolated pockets windslab in leeward areas. Certainly lots of wind crust! At treeline, there is wind effect until just below the ridges, then its over.
Extreme winds on Tuesday night blasted most alpine terrain and expect some lingering, isolated pockets windslab in leeward areas. Certainly lots of wind crust! At treeline, there is wind effect until just below the ridges, then its over.
Winds on Tuesday reached over 140km/h at Macdonald West Shoulder! This left behind wind scoured surfaces and hard wind slabs in isolated terrain features. Expect to find variability in the surface snow as you move between aspects and elevations.
Extreme winds on Tuesday night blasted most alpine terrain. Expect some lingering, isolated slabs in leeward alpine areas and widespread wind effect into treeline. Use care with these slabs especially in steep or committing terrain features.
Previous strong southwesterly winds have resulted in wind slab formation in open terrain features at all elevations. Be most wary of where slab has built over shallow areas, on unsupported slopes, and on steeper solar aspects.
Use caution around thin to thick areas. Keep an eye out for surface hoar in isolated sheltered locations below treeline.
Extreme winds on Tuesday night blasted most alpine terrain. Expect some lingering, isolated slabs in leeward alpine areas and widespread wind effect into treeline. Use care with these slabs especially in steep or committing terrain features.
On Tuesday winds reached over 140km/h at Macdonald West Shoulder! This left behind wind scoured surfaces and hard wind slabs in isolated terrain features and new cornice growth. Expect variability while moving between aspects and elevations.
Previous strong to extreme Southwesterly winds have resulted in wind slab formation in open terrain features at all elevations. Be wary of where firm slabs have built over shallow areas, on unsupported slopes, and on steep solar aspects.
Use caution around thin to thick areas as potential trigger locations. Keep an eye out for buried surface hoar lurking in isolated sheltered locations below treeline.
Extreme winds earlier in the week blasted most alpine terrain. Expect some lingering, isolated slabs in leeward alpine areas.
Extreme winds earlier in the week blasted most alpine terrain. Expect some lingering, isolated slabs in leeward alpine areas.
Last weeks wind event scoured most alpine terrain. Watch for isolated slabs in lee features in the alpine
Use caution around thin to thick areas as potential trigger locations. Keep an eye out for buried surface hoar lurking in isolated sheltered locations below treeline.
Classic low probability high consequence problem at the moment.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Use caution around thin to thick areas as potential trigger locations. Keep an eye out for buried surface hoar lurking in isolated sheltered locations below treeline.
Wind slabs could still be lurking in steep alpine features, especially below ridgecrests and in gullies. Take the time to evaluate the bonds in the upper snowpack before committing to your line.
Classic low probability high consequence problem at the moment.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Use caution around thin to thick areas as potential trigger locations. Keep an eye out for buried surface hoar lurking in isolated sheltered locations below treeline.
Low probability, high consequence problem at the moment.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Use caution around thin to thick areas as potential trigger locations. Keep an eye out for buried surface hoar lurking in isolated sheltered locations below treeline.
5-20 cm of new snow forecasted for tree-line regions over next few days. This new snow sits on a well developed layer of surface facets and has potential to sluff easily out of steep terrain.
5-20 cm of new snow forecasted for tree-line regions over next few days. This new snow sits on a well developed layer of surface facets and has potential to sluff easily out of steep terrain.
Pockets of windslab have been reported and may build today if the wind picks up
Low probability, high consequence problem at the moment. Keep an eye out for sporadic weak layers within the snowpack. These layers may be present in a form of buried surface hoar, facet interfaces, or sun crust.
Although the amount of new snow is low, pockets of wind slab may still exist in alpine lee areas. Expect this problem to become more prevalent Sunday as the leading edge of next weeks storm enters our area in the afternoon.
5 to 15+cm of new snow is sitting on a facetted interface and has the potential to sluff easily out of steep terrain. This problem is most pronounced in the southern areas that received more snow in the last 24 hrs.
5 to 15+cm of new snow is sitting on a facetted interface and has the potential to sluff easily out of steep terrain. This problem is most pronounced in the southern areas that received more snow in the last 24 hrs.
Pockets of windslab have already been reported and may build today if the wind picks up earlier than forecast
10 to 20 cm of storm snow is sitting on a facetted interface and has the potential to sluff easily in steep terrain. This problem is most pronounced in confined gullies and couloirs and the hazard will increase as the winds increase on Saturday.
As the winds increase on Saturday afternoon the recent storm snow will get blown around forming wind slabs in lee areas of the alpine. This problem will increase with more snow and wind over the following couple of days.
Low probability, high consequence problem at the moment. Keep an eye out for sporadic weak layers within the snowpack. These layers may be present in a form of buried surface hoar, facet interfaces, or sun crust.
10 to 40 cm of storm snow is sitting on a facetted interface and has the potential to sluff easily in steep terrain. This problem is most pronounced in confined gullies and couloirs and the hazard will increase as the winds increase on Saturday.
As the winds increase on Saturday afternoon the recent storm snow will get blown around forming wind slabs in lee areas of the alpine. This problem will increase with more snow and wind over the following couple of days.
Pockets of windslab have already been reported and may build today if the wind picks up earlier than forecast.
Reactive storm slabs will develop Sunday and continue to build on Monday with incoming snowfall and wind.
10 to 30 cm of storm snow is sitting on a facetted interface and is sluffing easily in steep terrain. This problem is most pronounced in confined gullies and couloirs and the hazard will increase as the winds increase on Saturday.
Increasing wind on Saturday afternoon will be redistributed forming wind slabs in lee areas of the alpine. This problem will increase with more snow and wind over the following couple of days.
10 to 30 cm of storm snow is sitting on a facetted interface and is sluffing easily in steep terrain. This problem is most pronounced in confined gullies and couloirs and the hazard will increase as the winds increase on Saturday.
Increasing wind on Saturday afternoon will be redistributed forming wind slabs in lee areas of the alpine. This problem will increase with more snow and wind over the following couple of days.
Keep an eye out for sporadic weak layers within the snowpack. These layers may be present in a form of buried surface hoar, facet interfaces, thin to fat areas and/or sun crust.
Snowfall, wind and warm temps are a perfect recipe for storm slab development.
Expect loose dry avalanches in steep terrain.&nbsp; Manage your descent accordingly.
Likelihood and size dependent on wind effect and precip amounts
Size and likelihood dependent on precip amounts. Previous surface faceting could make this problem more reactive.
Storm slabs are expected to form as snowfall amounts add up, winds remain strong from the SW and temps gradual rise, aiding in the settlement of the new snow into a slab. This problem will be most prevalent in lee features and on steep convex terrain
15 to 40 cm of storm snow (and more on the way) is sitting on a facetted interface and is sluffing easily in steep terrain. This problem is most pronounced in confined gullies, couloirs and steep terrain.
Storm slabs are expected to form as snowfall amounts add up, winds remain strong from the SW and temps gradual rise, aiding in the settlement of the new snow into a slab. This problem will be most prevalent in lee features and on steep convex terrain
15 to 40 cm of storm snow (and more on the way) is sitting on a facetted interface and is sluffing easily in steep terrain. This problem is most pronounced in confined gullies, couloirs and steep terrain.
Snowfall, wind, and warm temps are a perfect recipe for storm slab development. These storm slabs will be touchy where the winds have been stronger.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Watch for cracking/whumphing around your skis/board today!
Expect loose dry avalanches in steep terrain. Manage your descent accordingly. The underlying facets will allow for a greater snow mass to accumulate and flow fast and far.
Likelihood and size dependent on wind effect and precip amounts
Size and likelihood dependent on precip amounts. Previous surface faceting could make this problem more reactive.
Storm slabs and soft windslabs are forming as snowfall amounts add up. This problem exists at treeline and above and leeward areas had up to 100 cm slabs on Monday. Avoid avalanche terrain on Tuesday.
Up to 40 cm of storm snow sluffs easily in steep terrain. Ice climbers should avoid all gully climbs on Tuesday and skiers watch your sluff on all steep slopes.
Storm slabs and soft windslabs are forming as snowfall amounts add up. This problem exists at treeline and above and leeward areas had up to 100 cm slabs on Monday. Avoid avalanche terrain on Tuesday.
Up to 40 cm of storm snow sluffs easily in steep terrain. Ice climbers should avoid all gully climbs on Tuesday and skiers watch your sluff on all steep slopes.
New snow will need time to settle. Bonding of new snow will be variable with fluctuating freezing levels.
New snow will need time to settle. Bonding of new snow will be variable with fluctuating freezing levels.
40-50cm of storm snow, warm temps, and winds that have finally arrived are building touchy storm slabs on the previous drought layer. Natural avalanches are showing the new storm slab is not bonding well to it.
Expect loose dry avalanches in steep terrain. The underlying facets will allow for a greater snow mass to accumulate and flow fast and far.
An avalanche cycle to size 2.5 occurred on Tuesday primarily in the northern region that received the most recent storm snow. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Southern areas got more wind and this problem was acting more like a windslab primarily in alpine and treeline areas
Up to 60 cm of storm snow sluffs easily in steep terrain. Ice climbers should avoid all gully climbs on Wednesday and skiers watch your sluff on all steep slopes.
An avalanche cycle to size 2.5 occurred on Tuesday primarily in northern and western areas that received the most recent storm snow. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Southern areas got more wind and this problem was acting more like a windslab primarily in alpine and treeline areas
Up to 60 cm of storm snow sluffs easily in steep terrain. Ice climbers should avoid all gully climbs on Wednesday and skiers watch your sluff on all steep slopes.
Likelihood and size dependent on wind effect and precip amounts
Size and likelihood dependent on precip amounts. Previous surface faceting could make this problem more reactive.
Approximately 60cm of recent storm snow, accompanied by warm temps, and strong winds built fresh storm slabs. The recent snow buries a previous drought layer(surface hoar, sun crust, and surface facets), which varies on elevation and aspect.
Expect loose dry avalanches in steep terrain. The underlying facets will allow for a greater snow mass to accumulate and flow fast and far.
Light to moderate W through SW winds will transport snow into immediate lees in the alpine and, eventually exposed treeline features
Size and likelihood dependent terrain. Previous surface faceting could make this problem more reactive.
Increasing winds, up into the strong range (40-60km/hr) from the West to North West will redistribute the recent storm snow into wind slabs in the alpine and open areas at tree line.
Up to 60 cm of storm snow has been sluffing easily in steep terrain. Avoid committing yourself to steep, confined terrain if it has not already sluffed out.
Increasing winds, up into the strong range (40-60km/hr) from the West to North West will redistribute the recent storm snow into wind slabs in the alpine and open areas at tree line.
Up to 60 cm of storm snow has been sluffing easily in steep terrain. Avoid committing yourself to steep, confined terrain.
Approximately 60cm of recent storm snow, accompanied by warm temps, and strong winds on Tuesday morning built storm slabs in the alpine and exposed areas of Treeline.
Increasing winds, up into the strong range (40-60km/hr) from the West to North West will redistribute the recent storm snow into wind slabs in the alpine and open areas at tree line.
Up to 60 cm of storm snow has been sluffing easily in steep terrain. Avoid committing yourself to steep, confined terrain.
Light to moderate W-SW winds are redistributing snow in the high alpine.
Steep and rocky terrain.
Increasing winds, up into the strong range (40-60km/hr) from the West to North West will redistribute the recent storm snow into wind slabs in the alpine and open areas at tree line.
Up to 60 cm of storm snow has been sluffing easily in steep terrain. Avoid committing yourself to steep, confined terrain.
Recent low density snow and moderate SW wind continues to build wind slab.
The problem is specific to steep terrain and will be amplified by cold temperatures as snow starts to facet on the weekend.
The January 24th layer is made up of Surface Hoar, Facets and Crusts (depending on elevation and aspect). It is buried 60-80cm below the surface. This layer remains reactive to human triggers.
New snow and wind continue to add to the ongoing storm slab problem from the Feb 2 storm. These slabs are most reactive in the alpine and exposed areas of Treeline.
Recently formed wind slabs continue to produce avalanches to size 2.5 in the alpine and open areas at tree line. Skier triggering of this problem remains a concern.
This problem is primely a concern in the Eastern part of the forecast region where an up slope weather system has deposited heavy snow. Assess the problem carefully before entering confined terrain traps like ice climbing gulleys and steep couloirs.
Light to moderate NW winds overnight may result in reverse loading. Watch for newly formed wind slabs on all aspects in the alpine and in open, exposed tree line features.
Recently formed wind slabs continue to produce avalanches to size 2.5 in the alpine and open areas at tree line. Skier triggering of this problem remains a concern.
Up to 60 cm of storm snow has been sluffing in steep terrain. Avoid committing yourself to steep, confined terrain.
10cm of snow on Saturday will bring our storm totals to 20-30cm. In wind affected areas this will be blown into wind slabs on all aspects with a change in wind directions from west to east on Saturday night.
The problem is specific to steep terrain and will be amplified by cold temperatures as snow starts to facet on the weekend.
Moderate snowfall and strong winds have continued unabated since the February 2nd storm, creating an isolated wind slab problem in the alpine and exposed areas at treeline.
Wind slabs recently formed from variable winds are still a concern, but there have been limited alpine observations over the last 48 hours. We expect the incoming cold to decrease the sensitivity of these slabs over the next few days.
There is a lot of new snow hanging around, and in very steep couloirs and climbing gullies sloughing is still possible. We expect this problem to decrease in the short term with the incoming cold spell.
Wind slabs recently formed from variable winds are still a concern, but there have been limited alpine observations over the last 48 hours. We expect the incoming cold to decrease the sensitivity of these slabs over the next few days.
There is a lot of new snow hanging around, and in very steep couloirs and climbing gullies sloughing is still possible. We expect this problem to decrease in the short term with the incoming cold spell.
Watch for newly formed wind slabs on all aspects in the alpine and in open, exposed tree line features.
A period of reverse loading from northerly winds occurred yesterday evening, adding to the windslab problem created over the past week by moderate to strong south winds.
Suspected presence on all aspects in the alpine and in open, exposed tree line features. With cold temperatures, wind slabs are expected to loose its energy and become less reactive.
Wind slabs recently formed from variable winds are still a concern, but there have been limited alpine observations over the last 48 hours. We expect the deep freeze to help stabilize this problem over the week.
The problem is specific to steep terrain and will become easier to trigger as cold temperatures start to facet the new snow.
30-35cm of new snow is being blown into new wind slabs in the alpine and upper treeline by light westerly winds.
Wind slabs recently formed from variable winds are still a concern, but there have been limited alpine observations over the last 48 hours. We expect the deep freeze to help stabilize this problem over the week.
Pockets of soft slab exist in the alpine and immediate tree-line lee features. They have been stubborn to move, but demand respect in steeper, more committing start zones.
Wind speeds&nbsp; have been mainly light with only occasional moderate gusts from the North over the past few days. Watch for areas of localized wind effect in the ALP and exposed TL features.
Wind slabs recently formed from variable winds are still a concern, but are becoming stubborn with the cold temperatures.&nbsp; Increasing alpine winds on Tuesday may elevate the hazard in areas where loose snow is available for transport.
Wind slabs recently formed from variable winds are still a concern, but are becoming stubborn with the cold temperatures. Increasing alpine winds on Tuesday may elevate the hazard in areas where loose snow is available for transport.
Pockets of soft slab exist in the alpine and immediate tree-line lee features. They have been stubborn to move, but demand respect in steeper, more committing start zones. Cracking and whumphing under your skis are indicators of the slab.
Wind speeds have remained light with only occasional transport speeds recorded over the past few days. Watch for areas of localized wind effect in the ALP and exposed TL features.
Cold temperatures can make cornices brittle. Keep a healthy distance away both when traveling below, or near corniced features.
Wind slabs recently formed from variable winds are still a concern, but are becoming stubborn with the cold temperatures. Local alpine winds may elevate the hazard in areas where loose snow is available for transport.
Wind slabs recently formed from variable winds are still a concern, but are becoming stubborn with the cold temperatures. Local alpine winds may elevate the hazard in areas where loose snow is available for transport.
Wind slabs are forming in unusual places with winds coming through in all different directions. Feel for pockets of stiffer snow before you commit to your line.
The problem is specific to steep terrain and will become easier to trigger as cold temperatures start to facet the new snow.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Pockets of soft slab exist in the alpine and immediate tree-line lee features. They have been stubborn to move, but </span><a href="https://avalanche.ca/map?panel=mountain-information-network-submissions/f0669390-3ea8-4a33-8bd6-37dae47274b6" target="_blank"><span class="s_9255B882">demand respect in steeper, more committing start zones. </span></a><span class="s_AA239A9B">Winds from the NE may be creating thin slabs on W and S'ly aspects.
Cold temps are faceting the surface snow, allowing it to flow like sugar down steep slopes. It won't be sweet to be hit by a sluff while you're in a tight gully, so keep your head up and watch for any activity that could knock you off your feet.
Wind slabs recently formed from variable winds are still a concern, but are becoming stubborn with the cold temperatures. Local alpine winds may elevate the hazard in areas where loose snow is available for transport.
Surface snow continues to lose cohesion and structure making specific areas susceptible to light triggers like direct solar influence, and excitable riders. Sluff awareness and management will be very important in steep and/or confined lines.
Cold temperatures can make cornices brittle. Keep a healthy distance away both when traveling below, or near corniced features.
The January 24th weak interface may be triggerable on solar aspects, where facets and/or surface hoar is sitting on a suncrust. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">The bond at this interface may be weakening, with cold temps promoting facetting.
Pockets of soft windslab exist in exposed areas. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">These have been stubborn to move, but demand respect in steeper, more committing start zones.
Cold temps are faceting the surface snow, allowing it to flow like sugar down steep slopes. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Be aware of your sluff when skiing steeper terrain.
Recent windslab activity is noted in very high elevation windloaded ridgetop features. It seems to require a large trigger such as cornice failures to initiate or potentially a shallow location where a skiers weight may be enough. 
Cold temperatures are making cornices brittle and prone to failure. Keep a healthy distance away both when traveling below, or near corniced features.
Surface snow continues to lose cohesion and structure making specific areas susceptible to light triggers like direct solar influence, and excitable riders. Sluff awareness and management will be very important in steep and/or confined lines.
Wind slabs are forming in unusual places with variable wind direction. Feel for pockets of stiffer snow before you commit to your line. Treeline hazard is specific to exposed terrain features such as ridgelines.&nbsp;
The problem is specific to steep terrain and will become less of an issue as snow continues to settle with warming temperatures sunday.
Wind slabs formed from variable alpine winds are still a concern, but are becoming more difficult to trigger with the cold temperatures. Watch for slabs over weaker facets or crusts. Several cornice failures have also been observed recently.
As the surface snow facets and weakens, it is starting to sluff more easily in steep terrain. Higher wind speeds will also contribute to more natural sluffing. This is mostly a problem in narrow confined terrain like gullies or couloirs.
Wind slabs formed from variable alpine winds are still a concern, but are becoming more difficult to trigger with the cold temperatures. Watch for slabs over weaker facets or crusts. Several cornice failures have also been observed recently.
As the surface snow facets and weakens, it is starting to sluff more easily in steep terrain. Higher wind speeds will also contribute to more natural sluffing. This is mostly a problem in narrow confined terrain like gullies or couloirs.
Alpine winds have been steadily blowing moderate from the North for the past 36hrs; expect windslabs in unusual places.
The January 24th weak interface may be triggerable on solar aspects, where facets and/or surface hoar is sitting on a suncrust. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">The bond at this interface may be weakening, with cold temps promoting facetting.
Recent windslab activity has been noted in high elevation windloaded features. It seems to require a large trigger such as cornice failures to initiate or potentially a shallow location where a skiers weight may be enough.
Cold temperatures are making cornices brittle and prone to failure. Keep a healthy distance away both when traveling below, or near corniced features.
Surface snow continues to lose cohesion and structure making specific areas susceptible to light triggers like direct solar influence, and excitable riders. Sluff awareness and management will be very important in steep and/or confined lines.
Wind slabs formed from variable alpine winds are still a concern, but are becoming more difficult to trigger with the cold temperatures. Watch for slabs over weaker facets or crusts. Several cornice failures have also been observed recently.
As the surface snow facets and weakens, it is starting to sluff more easily in steep terrain. Higher wind speeds will also contribute to more natural sluffing. This is mostly a problem in narrow confined terrain like gullies or couloirs.
Wind slabs formed from variable alpine winds are still a concern, but are becoming more difficult to trigger with the cold temperatures. Watch for slabs over weaker facets or crusts. Several cornice failures have also been observed recently.
As the surface snow facets and weakens, it is starting to sluff more easily in steep terrain. Higher wind speeds will also contribute to more natural sluffing. This is mostly a problem in narrow confined terrain like gullies or couloirs.
North winds have been forming windslabs in unusual locations. Use extra care in evaluating the aspect of sub features in the terrain you are travelling. Wind loaded slabs can form with crossloading on runs that predominantly face north
The January 24th weak interface may be triggerable on solar aspects, where facets and/or surface hoar is sitting on a suncrust. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">The bond at this interface may be weakening, with cold temps promoting facetting.
New wind slabs have been reported from increased winds over the last 24 hours that are generally small in size but would be of concern in steep, alpine terrain. Winds have also formed cornices that have been seen to fail and trigger wind slabs below.
We are adding this after a week of isolated observations. It exists mainly in the Kootenay region but there is some uncertainty around this. It is failing on average 40cm deep on the Jan. 27 layer of facets, or facets/thin suncrust on steep South.
As the surface snow facets and weakens, it is starting to sluff more easily in steep terrain. This is mostly a problem in narrow confined terrain like gullies or couloirs.
New wind slabs have formed over the last 24 hours. These are generally small in size but would be of concern in steep alpine features. New cornices have been failing and observed to pull wind slabs below.
As the surface snow facets and weakens, it is starting to sluff more easily in steep terrain. This is mostly a problem in narrow confined terrain like gullies or couloirs.
Recent windslab activity has been noted in high elevation windloaded features. It seems to require a large trigger such as cornice failures to initiate or potentially a shallow location where a skiers weight may be enough.
Cold temperatures are making cornices brittle and prone to failure. Keep a healthy distance away both when traveling below, or near corniced features.
Surface snow continues to lose cohesion and structure making specific areas susceptible to light triggers like direct solar influence, and excitable riders. Sluff awareness and management will be very important in steep and/or confined lines.
Mod-strong winds yesterday came from different directions in different drainages yesterday. Look for signs of the recent local wind direction. Features can be crossloaded where terrain is bowled or gullied containing multiple aspects.
The January 24th weak interface may be triggerable on solar aspects, where facets and/or surface hoar is sitting on a suncrust. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">The bond at this interface may be weakening with facets having grown under recent cold temperatures
Surface snow continues to lose cohesion and structure making specific areas susceptible to light triggers like direct solar influence, and excitable riders. Sluff awareness and management will be very important in steep and/or confined lines.
Recent windslab activity has been noted in high elevation windloaded features. It seems to require a large trigger such as cornice failures to initiate or potentially a shallow location where a skiers weight may be enough.
Recent variable winds have built slabs. These are mainly small in size but would be of concern in steep alpine terrain. There have also  been several examples of cornice failures over the last few days creating larger events that involve these slabs.
Continued observations of isolated avalanches near treeline over the last two weeks, mainly centered around the Kootenay region. These are 30-40 cm soft slabs over the Jan. 27 layer : facets, or facets over a thin sun crust on steep south aspects
As the surface snow facets and weakens, it is starting to sluff more easily in steep terrain. This is mostly a problem in narrow confined terrain like gullies or couloirs.
Recent variable winds have built slabs. These are mainly small in size but would be of concern in steep alpine terrain. There have also been several examples of cornice failures over the last few days creating larger events that involve these slabs.
As the surface snow facets and weakens, it is starting to sluff more easily in steep terrain. This is mostly a problem in narrow confined terrain like gullies or couloirs.
Variable mod-strong winds have changed the usual wind-loading pattern across various drainages. Look for signs of the recent local wind direction. Features can be crossloaded where terrain is bowled or gullied containing multiple aspects.
The January 24th weak interface may be triggerable on solar aspects, where facets and/or surface hoar is sitting on a suncrust.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">The bond at this interface may be weakening with facets having grown under recent cold temperatures.
Recent wind slab activity has been noted in high elevation wind loaded features. It seems to require a large trigger such as a cornice failure to initiate or potentially a shallow location where a skiers weight may be enough.
Isolated, sheltered features that have not been impacted by winds are susceptible to sluffing and loose dry avalanches. Ice climbers be aware of these features.
Recent variable winds have built slabs. These are mainly small in size but would be of concern in steep alpine terrain. There have also been several examples of cornice failures over the last few days creating larger events that involve these slabs.
Sporadic observations of avalanches over the last two weeks, mainly centered around the Kootenay region. These are 30-40 cm soft slabs over the Jan. 27 layer : facets, or facets over a thin sun crust on steep south aspects
As the surface snow facets and weakens, it is starting to sluff more easily in steep terrain. This is mostly a problem in narrow confined terrain like gullies or couloirs.
Recent variable winds have built slabs. These are mainly small in size but would be of concern in steep alpine terrain. There have also been several examples of cornice failures over the last few days creating larger events that involve these slabs.
As the surface snow facets and weakens, it is starting to sluff more easily in steep terrain. This is mostly a problem in narrow confined terrain like gullies or couloirs.
Wind slabs are forming in unusual places. Last weeks cold snap was accompanied by northerly wind which may be hard to remember now we are back to our typical SW flow. Be on the look out for pockets of stiffer snow in open terrain
Variable mod-strong winds have changed the usual wind-loading pattern across various drainages. Look for signs of the recent local wind direction. Features like gullies, bowls, ribs, etc can be cross-loaded where terrain has multiple aspects.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">The January 24th weak interface may be triggerable on solar aspects, where facets and/or surface hoar are sitting on a suncrust.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">The </span><a href="https://mountainconditions.ca/reports/wind-slabs-or-persistent-slabs" target="_blank"><span class="s_9255B882">bond at this interface may be weakening with facets having grown under recent cold temperatures.</span></a><span class="s_AA239
Moderate to strong SW winds in the alpine and higher RH values are likely creating wind slabs.
The likelihood of triggering increases with warming temperatures and solar input. Isolated, sheltered features that have not been impacted by winds are susceptible to sluffing and loose dry avalanches. Ice climbers be aware of these features.
  Caution in thin snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
SW winds have returned stiffening wind slabs and making it difficult to see the reverse loading that occurred last week. Wind slabs seems to be most reactive at tree line.
Recent variable winds have built slabs. These are mainly small in size but would be of concern in steep alpine terrain. There have also been several examples of cornice failures over the last few days creating larger events that involve these slabs.
Sporadic observations of avalanches over the last two weeks, mainly centered around the Kootenay region. These are 30-40 cm soft slabs over the Jan. 27 layer : facets, or facets over a thin sun crust on steep south aspects
Recent variable winds have built slabs. These are mainly small in size but would be of concern in steep alpine terrain. There have also been several examples of cornice failures over the last few days creating larger events that involve these slabs.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">The wind slabs are widespread; however, they are only reactive in isolated terrain features. Cold temperatures have facetted the snow under the wind slabs. There is an excellent MCR describing this problem in more detail that can be </span><a href="https://mountainconditions.ca/reports/wind-slabs-or-persistent-slabs" target="_blank"><span class="s_9255B882">found here.</span></a><span class="s_AA239A9B">
The Jan 24th interface has been easily found in numerous recent profiles; however, no results have been recorded as this layer becomes harder to trigger. There is still a lingering possibility that it could be triggered on steep solar aspects.
Alpine areas are wind effected throughout, including isolated pockets of windslab in loaded gullies, or pockets below cornices. If you're traveling in extreme terrain, expect to find small wind slabs. Check your line with a ski cut before committing.
Moderate to strong SW winds in the alpine and higher RH values are likely creating wind slabs.
The likelihood of triggering increases with warming temperatures and solar input. Isolated, sheltered features that have not been impacted by winds are susceptible to sluffing and loose dry avalanches. Ice climbers be aware of these features.
Caution in thin snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Alpine areas are wind effected throughout, including isolated pockets of windslab in loaded gullies, or pockets below cornices. If you're traveling in extreme terrain, expect to find small wind slabs. Check your line with a ski cut before committing.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">~ Approx 15 cm of new snow is hiding hard wind slabs in the alpine and exposed areas of tree line. Cold temps continue to facet and weaken the upper snow pack. There is an excellent MCR describing this problem in more detail that can be </span><a href="https://mountainconditions.ca/reports/wind-slabs-or-persistent-slabs" target="_blank"><span class="s_9255B882">found here.</span></a><span class="s_AA239A9B">
The Jan 24th interface has been easily found in numerous recent profiles; however, minimal results have been recorded as this layer becomes harder to trigger. This layer is most concerning on steep, unsupported terrain features, on solar aspects.
Moderate to strong SW winds in the alpine and higher RH values are likely creating wind slabs.
Caution in thin snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Wind slabs may propagate farther then expected due to underlying facet layer and will remain the primary concern until the warm storm arrives on Sunday.
Stronger winds on Friday will add to the wind effect in the alpine and create small wind-slabs in lee terrain.
Stronger winds on Friday will add to the wind effect in the alpine and create small wind-slabs in lee terrain.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">By the end of today there could be 25cm over the Valentine's Day weak interface of facets and crusts. This will also hide recent windslabs that may still be reactive in unusual areas. Check out this </span><a href="https://mountainconditions.ca/reports/wind-slabs-or-persistent-slabs" target="_blank"><span class="s_9255B882">MCR</span></a><span class="s_AA239A9B"> describing the problem in more detail
The Jan 24th interface has been found in numerous recent profiles. This layer is most concerning on steep, unsupported terrain features on solar aspects
Wind-slabs exist in the alpine and some locations have reported the 'hollow' noise while walking which can be a sign of potential instability. Continuing wind adds to this condition.
Caution in thin snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Stronger winds will add to the wind effect in the alpine and create small wind-slabs in lee terrain. This problem will continue to develop as we see an increase in snow and wind over the weekend. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Stronger winds will add to the wind effect in the alpine and create small wind-slabs in lee terrain. This problem will continue to develop as we see an increase in snow and wind over the weekend. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">40cm and counting is being redistributed by moderate SW wind. This lies over the Valentine's Day weak interface of facets and variable wind effect. Check out this </span><a href="https://mountainconditions.ca/reports/wind-slabs-or-persistent-slabs" target="_blank"><span class="s_9255B882">MCR</span></a><span class="s_AA239A9B"> describing the buried windslabs in more detail.
Expect the new snow to be easily triggered in steep terrain.  Loose snow avalanches will gain mass quickly where the new snow sits on previously faceted and unconsolidated snow.
The Jan 24th interface has been found in numerous recent profiles. This layer is most concerning on steep, unsupported terrain features on solar aspects
Strong to extreme SW winds with new snow are likely to build wind slabs in the alpine and tree line areas.
Caution in thin snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Winds will be strong out of the west overnight Saturday and reach Extreme as the storm arrives Sunday. Expect the small wind-slabs in the alpine to develop further and extend to treeline elevations especially as fresh snow and warming temps are added
New snow, intense winds and warm temperatures associated with the storm arriving late Sunday will promote slab development at all elevations as snowfall continues through Tuesday. Expect the new slabs to be touchy over the current faceted surfaces.
Winds will be Strong out of the west overnight Saturday and reach Extreme as the storm arrives Sunday. Expect the small wind-slabs in the alpine to develop further and extend to treeline elevations especially as fresh snow and warming temps are added
New snow, intense winds and warm temperatures associated with the storm arriving midday Sunday will promote slab development at all elevations as snowfall continues through Tuesday. Expect the new slabs to be touchy over the current faceted surfaces.
40cm of storm snow and counting is being redistributed by strong S'ly winds. This lies over the Valentine's Day weak interface of facets, crusts and variable wind effect. Expect slab properties to increase throughout the day as the storm intensifies.
The Jan 24th interface has been found in numerous recent profiles. This layer may wake-up with increased load from the storm! It is most concerning on steep, unsupported terrain features on solar aspects, where it exists as a sun crust.
Severe SW winds have stripped, and transported snow from many areas in the alpine and treeline.
Loose dry, spindrift avalanches remain a problem for ice climbers
Wind slabs will be found at all elevations including in the burnt forest, and may propagate farther then expected due to underlying facet layer. This is especially true at and below treeline where the facets are sitting on a hard melt freeze crust.
Strong to extreme wind on Sunday has created fresh wind-slabs in the alpine. Snow fall and more wind is expected to continue over night Sunday, so expect the wind slab problem to drastically increase in the near term. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Loose dry avalanches were running today on Mt. Field and Mt. Dennis in steep terrain. Storm conditions overnight Sunday will accentuate this problem on Monday, especially in gully features.
There is approximately 40cm of storm snow currently at treeline which has not quite yet settled into a slab. However, it is expected that further snow load and warming temperatures will settle the storm snow into a slab overnight Sunday. 
Extreme winds continue to develop wind slab in the alpine and tree line. Much of this new load will be deposited over the old weak faceted surface.
New snow, intense winds and warm temperatures associated with the storm will promote slab development at all elevations as snowfall continues through Tuesday. Expect the new slabs to be touchy over the current faceted surfaces.
New snow and strong to extreme winds continue to produce extensive loose dry avalanche activity throughout the forecast region.
60+cm of storm snow is being redistributed by strong/extreme S'ly winds. This lies over the Valentine's Day weak interface of facets, crusts and variable wind effect. Slab properties have developed and are failing on this layer.
The Jan 24th interface has been found in numerous recent profiles. This layer has awakened with increased load from the storm. It is most concerning on steep, unsupported terrain features on solar aspects, where it exists as a sun crust.
Strong to extreme west winds have created wind slabs in the alpine and at tree line. An additional 5-20cm with wind is forecasted Monday evening. We suspect this will be touchiest in previously sheltered areas where the underlying facets were biggest
15-50 cm of recent storm snow overlies a weak facetted layer in sheltered locations. As the snow settles into a slab, we suspect it will be reactive to human triggering. This problem will be most pronounced in areas with the most recent snow.
New snow and strong to extreme winds continue to produce loose dry avalanche activity throughout the forecast region. Give the recent snow some time to settle before exposing yourself to steep overhead terrain.
Strong to extreme west winds created wind slabs in the alpine and at tree line. An additional 10-20cm with wind is forecasted Monday evening. We suspect this will be touchiest in previously sheltered areas where the underlying facets were biggest
30-50 cm of recent storm snow overlies a weak facetted layer in sheltered locations. As the snow settles into a slab, we suspect it will be reactive to human triggering. This problem will be most pronounced in areas with the most recent snow.
New snow and strong to extreme winds continue to produce loose dry avalanche activity throughout the forecast region. Give the recent snow some time to settle before exposing yourself to steep overhead terrain.
Severe SW winds have stripped, and transported snow from many areas in the alpine and treeline.
Loose dry, spindrift avalanches remain a problem for ice climbers
Caution in thin snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
80+cm of storm snow is being redistributed by mod/strong S'ly winds. This lies on top of the Valentine's Day weak interface of facets, crusts and variable wind effect. Slab properties have developed and are failing on this layer.
30-50 cm of recent storm snow overlies a weak facetted layer in sheltered locations. This has resulted in wind effected slabs in alpine areas and less slab effect in more sheltered areas. Avoid avalanche terrain for another day still.
30-50 cm of recent storm snow overlies a weak facetted layer in sheltered locations. This has resulted in wind effected slabs in alpine areas and less slab effect in more sheltered areas. Avoid avalanche terrain for another day still.
Severe SW winds have stripped, and transported snow from many areas in the alpine and treeline.
Loose dry, spindrift avalanches remain a problem for ice climbers
Caution in thin snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
The recent snowfall sits on the Feb14 drought layer. This new snow will take time to bond to the crust/facet layer. Of most concern are areas with significant wind effect and where the slab overlies a crust (S'ly aspects).
Contuined Moderate to Strong SW winds are creating wind slabs
Loose dry in steep terrain remain a hazard for ice climbers. Small sluffs could have big consequences in the wrong terrain.
Caution in thin snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Strong overnight winds on Wednesday will redistribute the recent storm snow and create widespread windslabs in all open areas, potentially even on open slopes below treeline. Stick to sheltered terrain; things will still be tricky out there.
Strong overnight winds on Wednesday will redistribute the recent storm snow and create widespread windslabs in all open areas, potentially even on open slopes below treeline. Stick to sheltered terrain; things will still be tricky out there.
Fresh storm slabs are building and will be touchier in exposed areas where they have been stiffened by the wind. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Loose dry avalanches will be bigger in sheltered terrain where they can entrain the previous storm snow.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Loose snow may run quickly on steep solar aspects where they sit on a thin suncrust.
The 80+ cm of snow we received Monday sits on the February 14th facet/wind crust interface. This problem may persist longer in areas where the facets are well preserved.
The February 14 facet layer has been buried by up to 40cm of storm snow with extreme winds. Recent skier triggered avalanches in neighboring regions paired with few observations have us treating this layer with respect as we gather information.
Recent strong to extreme southwest winds have formed thick wind slabs in the alpine and treeline. These will continue to build through the weekend with incoming wind and precipitation.
Hard wind slabs in the Alpine and open Treeline features have the potential for wide propagations across connected features. Assess this bond carefully.
Caution in thin snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Up to 50cm of snow over the Feb 19 interface has proven to be mainly reactive where the wind formed slabs. These extend well into treeline elevations. New snow Thursday has contributed to these slabs but may also bury them, making them hard to detect
Up to 50cm of snow over the Feb 19 interface has proven to be mainly reactive where the wind formed slabs. These extend well into treeline elevations. New snow Thursday has contributed to these slabs but may also bury them, making them hard to detect
The February 14 facet layer has been buried by up to 40cm of storm snow with extreme winds. Recent skier triggered avalanches in neighboring regions paired with few observations have us treating this layer with respect as we gather information.
Recent strong to extreme southwest winds have formed thick wind slabs in the alpine and treeline. These will continue to build through the weekend with incoming wind and precipitation.
Up to 45 cm of new snow has formed fresh storm slabs, these will be touchier in exposed areas where they have been stiffened by the wind. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Expect loose dry avalanches in steep terrain.&nbsp; These may run quicker on steep solar aspects where they sit on a thin suncrust.
The 80+ cm of snow we received Monday sits on the February 14th weak layer. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">This problem may persist longer in areas where the facets are well preserved, or on steep solar aspects where these is a thin suncrust at this interface.
Wind slabs in the alpine and exposed treeline features have the potential for wide propagations across connected features.
Caution in thin&nbsp; facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Ongoing new snow and wind continue to create wind slabs in alpine and exposed treeline lee areas. These have been becoming more difficult to trigger, but places where the new wind slab sits over a weaker facet interface are still a concern.
Areas that got more snow in the past two days are seeing significant sluffing in steep terrain. In most places this can be managed with good ski cutting and sluff management techniques, but it could be a problem in confined gullies or couloirs.
Ongoing new snow and wind continue to create wind slabs in alpine and exposed treeline lee areas. These have been becoming more difficult to trigger but caution is still advised. Cornices have also grown quickly and should be considered suspect.
Areas that got more snow in the past two days are seeing significant sluffing in steep terrain. In most places this can be managed with good ski cutting and sluff management techniques, but it could be a problem in confined gullies or couloirs.
Up to 55 cm of new snow has formed fresh storm slabs, these will be touchier in exposed areas where they have been stiffened by the wind. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Expect loose dry avalanches in steep terrain. These may run quicker on steep solar aspects where they sit on a thin suncrust.
The 80+ cm of snow we received Monday sits on the February 14th weak layer. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">This problem may persist longer in areas where the facets are well preserved, or on steep solar aspects where these is a thin suncrust at this interface.
Wind slabs in the alpine and exposed treeline features have the potential for wide propagations across connected features.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
A significant increase in wind on Sunday will continue to create wind slabs in the alpine and exposed treeline lee areas. Places where wind slabs sit over a weak facet interface are still a concern. Dig down to confirm this.
Significant sluffing in steep terrain in areas that received more snow late last week. Increased wind will add to the problem on Sunday. Watch your exposure to steep terrain traps and gully features.
Ongoing new snow and wind continue to create wind slabs in alpine and exposed treeline lee areas. Increased wind from the West in the strong range will add to the problem on Sunday. Cornices have also grown quickly and should be considered suspect.
Significant sluffing in steep terrain in areas that received more snow late last week. Increased wind will add to the problem on Sunday. Watch your exposure to steep terrain traps and gully features.
Up to 70 cm of new snow this week has formed fresh storm slabs. These will be more reactive in exposed areas where they have been stiffened by the wind and overlay a crust. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
The central and eastern areas of Glacier have received more wind than the west. With lots of new snow available for transport, expect fresh windslab development in lee features and increased cornice growth.
The 80+ cm of snow we received Monday sits on the February 14th weak layer. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">This problem may persist longer in areas where the facets are well preserved, or on steep solar aspects where these is a thin suncrust at this interface.
Wind slabs in the alpine and exposed treeline features have the potential for wide propagations across connected features.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Strong to extreme Westerly winds continue to create wind slabs in the alpine and exposed tree line lee areas. Places where wind slabs sit over a weak facet interface are still a concern. Dig down to confirm this.
Incremental imputes of new snow and increased wind will add to the problem. Watch your exposure to steep terrain traps and gully features.
Two weak facet interfaces exist in the top meter of the snowpack. On south aspects this problem could be associated with a sun crust. These layers are present in many areas, but we have uncertainty on where they will be reactive.
Ongoing new snow and wind continue to create wind slabs in alpine and exposed treeline lee areas. Increased wind from the West in the strong range will add to the problem Monday. Cornices have also grown quickly and should be considered suspect.
Incremental snow accumulation and increased wind will add to the problem on Monday. Watch your exposure to steep terrain traps and gully features.
With lots of new snow available for transport, expect fresh windslab development in lee features and increased cornice growth.
Continued wind slab development is expected with overnight snowfall and moderate SW winds. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Wind slabs in the alpine and exposed treeline features have the potential for wide propagations across connected features.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
36-hours of moderate to strong winds from the SW have blown the recent storm snow into windslabs in open areas. These could be quite deep in immediate lee areas. Check this on small slopes with no consequence and extrapolate to the bigger terrain.
36-hours of moderate to strong winds from the SW have blown the recent storm snow into windslabs in open areas. These could be quite deep in immediate lee areas. Check this on small slopes with no consequence and extrapolate to the bigger terrain.
Two weak facet interfaces exist in the top meter of the snowpack. On south aspects this problem could be associated with a sun crust. These layers are present in many areas, but we have uncertainty on where they will be reactive.
Recent strong to extreme southwest winds have formed thick wind slabs in the alpine and treeline.
Rising freezing levels will make Wet Loose avalanches a major concern on Wednesday afternoon and Thursday. Be mindful of your overhead hazard be aware that warm temperatures may cause cornices to fail.
This problem is most prevalent at and below treeline. The probability of triggering this layer is decreasing by the day but the consequence is still very high due to the depth of burial down 20-50cm and the potential for wide propagation.
Extreme south winds overnight will have created a variety of fresh windslabs and surface conditions.
Clear weather and warm temperatures are forecast over the next 3 days. The March sun is strong, and will pack a punch on solar aspects. Steep, rocky terrain with thin snowpacks (eastern regions) will be the most susceptible
Sustained strong winds from the SW have blown the recent storm snow into windslabs in open areas. These could be quite deep in immediate lee areas. Check this on small slopes with no consequence and extrapolate to the bigger terrain.
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</style><p class="p_CC664AAA"><a href="https://www.avalanche.ca/mountain-information-network/submissions/473fd502-7baf-11eb-b9b7-d6f5b8c172ff" target="_blank"><span class="s_9255B882">Two weak facet interfaces exist</span></a><span class="s_AA239A9B"> in the top meter of the snowpack. On south aspects this problem could be associated with a sun crust. These layers are present in many areas, but we have uncertainty on where they will be reactive.
Continued wind slab development is expected with overnight snowfall and moderate SW winds. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Wind slabs in the alpine and exposed treeline features have the potential for wide propagations across connected features.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Clear weather and warm temperatures are forecast over the next 3 days. The March sun is strong, and will pack a punch on solar aspects. Steep, rocky terrain with thin snowpacks will be the most susceptible
Sustained strong winds from the SW have blown the recent storm snow into windslabs in open areas. These could be quite deep in immediate lee areas. Check this on small slopes with no consequence and extrapolate to the bigger terrain.
Previous extreme winds have left behind variable surface conditions, and wind slabs in the Alpine and exposed areas of Treeline. There is a moderate amount of uncertainty in the Alpine, with limited observations due to weather and visibility.
Sustained strong winds from the SW have blown the available snow into wind slabs in open areas. These could be quite deep in immediate lee areas. Test sensitivity on small slopes with no consequence and extrapolate to bigger terrain.
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</style><p class="p_CC664AAA"><a href="https://www.avalanche.ca/mountain-information-network/submissions/473fd502-7baf-11eb-b9b7-d6f5b8c172ff" target="_blank"><span class="s_9255B882">Two weak facet interfaces exist</span></a><span class="s_AA239A9B"> in the top meter of the snowpack. On south aspects this problem could be associated with a sun crust. These layers are present in many areas, but we have uncertainty on where they will be reactive.
Continued wind slab development is expected with overnight snowfall and moderate SW winds. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Wind slabs in the alpine and exposed treeline features have the potential for wide propagations across connected features.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Sustained strong winds from the SW have blown the available snow into wind slabs in open areas. These could be quite deep in immediate lee areas. Test sensitivity on small slopes with no consequence and extrapolate to the bigger terrain.
This problem is most prevalent at and below treeline, and will become easier to trigger with the warm temperatures. An avalanche on this layer will have heavy consequences with a burial depth of 20-50cm and the potential for wide propagation.
Rising freezing levels will make wet loose avalanches a major concern. Be mindful of your overhead hazard be aware that warm temperatures may cause cornices to fail.
Older wind slabs will become more reactive throughout the day as temperatures increase. Be especially wary of sunny lee slopes.
Strong solar radiation and high freezing levels will initiate a wet loose avalanche cycle today. This will occur primarily on steep solar aspects; however, we'll still see activity on shaded aspects at lower elevations.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Previous extreme winds have left behind variable wind slabs in the Alpine and exposed areas of Treeline. A skier accidental size 3 wind slab occurred yesterday in the Grizzly Couloir, triggered by the 4th skier in the group. </span><a href="https://www.avalanche.ca/map/forecasts/north-columbia?panel=mountain-information-network-submissions/b276a3bc-7c8a-11eb-a446-ea9c29792ce5" target="_blank"><span class="s_9255B882">Click here for details.</span></a><span class="s_AA239
Sustained strong winds from the SW have blown the available snow into hard wind slabs in open areas. These can be quite deep in immediate lee areas and have been triggered by explosives and cornice failures.
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</style><p class="p_CC664AAA"><a href="https://www.avalanche.ca/mountain-information-network/submissions/473fd502-7baf-11eb-b9b7-d6f5b8c172ff" target="_blank"><span class="s_9255B882">Two weak facet interfaces exist</span></a><span class="s_AA239A9B"> in the top meter of the snowpack.&nbsp; They are the sliding layer for many recent explosive controlled, skier triggered, &amp; natural avalanches. On south aspects this problem could be associated with a sun crust.
Mostly clear skies and warm temperatures are forecasted again for Friday. The March sun is strong, and will pack a punch on solar aspects, weakening the upper snowpack. Steep, rocky terrain with thin snowpacks will be the most susceptible.
Wind slabs in the alpine and exposed treeline features have the potential for wide propagations across connected features.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Sustained strong winds from the SW have blown the available snow into hard wind slabs in open areas. These can be quite deep in immediate lee areas.
This is the second consecutive day of warm temperatures with freezing levels climbing into the alpine. A weak surface crust will break down quickly today. Wet loose avalanches will be a factor this afternoon, especially if and when the sun comes out.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">Previous extreme winds have left behind variable wind slabs in the Alpine and exposed areas of Treeline. A skier accidental size 3 wind slab occurred yesterday in the Grizzly Couloir, triggered by the 4th skier in the group. </span><a href="https://www.avalanche.ca/map/forecasts/north-columbia?panel=mountain-information-network-submissions/b276a3bc-7c8a-11eb-a446-ea9c29792ce5" target="_blank"><span class="s_9255B882">Click here for details.</span></a><span class="s_AA239A9B">
Wind slabs in the alpine and exposed treeline features have the potential for wide propagations across connected features.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Two layers of facets and/or sun crust in the top meter of the snowpack have been active in the past week.  Surface crusts formed over the last 2 days may reduce the likelihood of triggering at lower elevations and on solar aspects.
Some wind slabs exist in lees of alpine features from previous strong winds. We haven't seen much evidence of them being reactive over the last 24 hours. Cornice failures have also been noted in the past few days from recent loading.
Previous SW winds have blown the available snow into hard wind slabs in alpine lees. We haven't seen much activity on these in the last 24 hours. Cornices have also grown from recent loading and numerous failures have been seen over the past week.
15cm of new snow fell overnight and sits atop a breakable crust and 10cm of moist snow. Although temperatures are dropping, moisture in upper snowpack and locally strong winds will help increase the slab properties of this new dump.
Wind slabs in alpine start zones have been reactive to skier triggers this week. These slabs are buried under last night's snow, but they should not be forgotten. These slabs have a tendency to propagate on solar aspects where they sit on a crust.
Ongoing moderate SW winds will continue to form slabs in the alpine and exposed treeline features.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Two layers of facets and/or sun crust in the top meter of the snowpack have been active in the past week. Cooler temps and surface crusts formed over the last two days may reduce the likelihood of triggering at lower elevations and on solar aspects.
Some wind slabs exist in lees of alpine features from previous strong winds. Recent cornice failures have also been observed. The wind slabs have been less reactive in the past two days but caution is still advised in steep lee areas.
Some wind slabs exist in lees of alpine features from previous strong winds. Recent cornice failures have also been observed. The wind slabs have been less reactive in the past two days but caution is still advised in steep lee areas.
More snow and wind forecast for today. 15cm of new snow fell overnight Friday and sits atop a breakable crust at treeline and below, and wind slabs in exposed alpine areas.
Wind slabs in alpine start zones have been reactive to skier triggers this week. These slabs are buried under Friday night's snow, but they should not be forgotten. These slabs have a tendency to propagate on solar aspects where they sit on a crust.
Ongoing moderate SW winds will continue to form slabs in the alpine and exposed tree line features. These wind slabs sit on the Feb 20th facet interface giving hard test results
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Two layers of facets and/or sun crust in the top meter of the snowpack have been active in the past week. Cooler temps and surface crusts now formed may reduce the likelihood of triggering on solar aspects.
10-15 cm of recent snow is being redistributed by moderate to strong SW winds along treeline ridge crests and above. Expect soft new slabs in immediate lees. Previous strong winds created extensive wind effect in open areas and added cornice growth.
10-15 cm of recent snow is being redistributed by moderate to strong SW winds along treeline ridge crests and above. Expect soft new slabs in immediate lees. Previous strong winds created extensive wind effect in open areas and added cornice growth.
Today will be the first dose of strong solar input on the recent storm snow. Expect loose snow avalanches from steep solar aspects at all elevations, especially in areas with rocky or treed features.
Recent storm snow and moderate southerly winds have formed wind slabs in immediate lees and near ridge crests. Use caution as you transition into more wind affected terrain.
Ongoing moderate SW winds will continue to form slabs in the alpine and exposed tree line features. These wind slabs sit on the Feb 20th facet interface giving hard test results
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
This problem is most prevalent at and below treeline where it exists as a prominent facet layer down 30-70. Though activity has tapered off it is at a prime depth to be triggered by skiers, especially as things heat up during the day on solar aspects
The sun is packing a punch these days, and surface snow will quickly destabilize on steep solar aspects when it comes out.
Two layers of facets and/or sun crust in the top meter of the snowpack have been active in the past week. Cooler temps and surface crusts now formed may reduce the likelihood of triggering on solar aspects but little change is apparent otherwise.
10-15 cm of snow that fell Fri / Sat was redistributed by moderate to strong SW winds along treeline ridge crests and above Sunday. While the 10cm that arrived Monday has seen little wind, expect increasing winds Tuesday to contribute to these slabs.
10-15 cm of recent snow Fri / Sat was redistributed by moderate to strong SW winds along treeline ridge crests and above Sunday. An additional 10cm that arrived Monday may contribute to these slabs as moderate winds arrive Tuesday.
Today's strong solar input on S'ly slopes will increase hazard during the warmest part of the day. Expect loose snow avalanches from steep solar aspects at all elevations, especially in areas with rocky or treed features.
Isolated wind slabs can be found in immediate lee areas and near ridge crests. Watch for surface stiffness and cracking under your board(s) in the alpine.
New snow and wind will build fresh wind slabs that overlie previous wind slabs. This all sits on top of the Feb 20th facet interface.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
The Jan 27 and Feb 19 layers are becoming less reactive. Last weeks warm up combined with the recent cooling have likely helped this. Slopes that receive big triggers like cornices are the most likely place to see avalanche activity on these layers.
Yesterday's spike in S'ly winds redistributed recent storm snow. Small, isolated wind slabs can be found in immediate lee areas/ridge crests in the Alpine.
Calmer winds are decreasing the reactivity of wind slabs. These sits on top of the Feb 20th facet interface.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
This problem continues to linger and should be considered on alpine northern aspects where it appears large cornices can be the trigger. This means you should also watch your exposure to slopes overhead when on north aspect terrain.
15cm of recent snow may release on the crust below it if it gets enough sun
Small, isolated wind slabs can be found in immediate lee areas and ridge crests in the alpine
This problem is most prevalent at and below treeline where it exists as a prominent facet layer down 30-70. Rapidly rising temperatures will likely trigger natural avalanches on this layer with potential for wide propagation.
The sun is packing a punch these days, and surface snow will quickly destabilize on steep solar aspects when it comes out.
Cornices have grown quite large. It's hard to predict when one might fall, but rising temperatures and strong sunshine will make it much more likely.
The next few days will see an increase in freezing levels and solar input, peaking on the weekend. We should see a good freeze Friday AM but watch afternoon solar effect as conditions can deteriorate quickly.
We have had a few persistent slabs triggered by cornices (which are large!) over the past few days, mainly on alpine N aspects. If solar slopes start to break down from heat on Friday, these weak layers could reawaken on other aspects and elevations.
The next few days will see an increase in freezing levels and solar input, peaking on the weekend. We should see a good freeze Friday AM but watch afternoon solar effect as conditions can deteriorate quickly. 
Calmer winds have decreased the reactivity of wind slabs plus their is little snow left to redistribute; however, this condition originally&nbsp; formed on weak Feb 20th facets. It is prudent to keep this on your radar despite the moderate rating.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Isolated wind slabs can be found in lee areas in the alpine. The heat of the sun may make slabs more reactive and increase the size of an avalanche where moist snow can be entrained
This weekend will bring an increase in freezing levels and solar input. We should see some recovery over night, but watch afternoon solar effect as conditions can deteriorate quickly.
We have had a few persistent slabs triggered by cornices (which are large!) over the past few days, mainly on alpine N aspects. If solar slopes start to break down from heat on Friday, these weak layers could reawaken on other aspects and elevations.
We suspect moderate winds have created isolated wind slabs on immediate lee slopes in the alpine. Though small in size, this problem could pose a significant hazard in the wrong terrain.
This weekend will bring an increase in freezing levels and solar input. We should see some recovery over night, but watch afternoon solar effect as conditions can deteriorate quickly.
We suspect moderate winds have created isolated wind slabs on immediate lee slopes in the alpine. Though small in size, this problem could pose a significant hazard in the wrong terrain.
Originally formed on weak Feb 20th facets. It is prudent to keep this on your radar with rising temperatures as reactivity may increase. Cornices weakened by the warmer temperatures will have the potential to trigger slabs below.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Watch for signs of instability like snowballing and water running on rock faces, these are indications its time to avoid large solar slopes.
This weekend will bring warm temps and a rise in freezing levels and solar input. We should see some over night crust recovery, but watch for solar effect as conditions can deteriorate quickly.
We have had a few persistent slabs triggered by cornices (which are large) over the past few days, mainly on alpine N aspects. Increased solar input and high freezing levels could reawaken this problem.
We suspect moderate winds have created isolated wind slabs on immediate lee slopes in the alpine. Though small in size, this problem could pose a significant hazard in the wrong terrain.
This weekend will bring an increase in freezing levels and solar input. We should see some recovery over night, but watch for solar effect as conditions can deteriorate quickly.
We suspect moderate winds have created isolated wind slabs on immediate lee slopes in the alpine. Though small in size, this problem could pose a significant hazard in the wrong terrain.
Originally formed on weak Feb 20th facets. It is prudent to keep this on your radar with warmer temperatures as reactivity may increase. Cornices will have the potential to fail and trigger slabs below.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Watch for signs of instability like snowballing and water running on rock faces, these are indications it is time to avoid solar slopes.
Cornices are large and have been failing during the heat of the day recently.
Substantial crusts have formed on solar slopes that vary with slope angle, aspect and elevation. Solar heating will affect steep slopes first and solar effect will vary with local winds and cloud. Plan your day carefully around expected local heating
These are generally settled slabs. In the alpine, extensive wind effect over these layers has required large loads, such as cornices, to trigger. Sheltered and shallow areas on shaded aspects however, remain of some concern for skier triggering.
Substantial crusts have formed on solar slopes that vary with slope angle, aspect and elevation. Solar heating will affect steep slopes first and solar effect will vary with local winds and cloud. Plan your day carefully around expected local heating
Originally formed on weak Feb 20th facets. It is prudent to keep this on your radar with warmer temperatures as reactivity may increase. Cornices will have the potential to fail and trigger slabs below.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Weak  facets buried on Feb 20th. It is prudent to keep this on your radar with warmer temperatures as reactivity may increase. Cornices will have the potential to fail and trigger slabs below.
Caution in thin facetted snowpack areas where triggering is more likely. This is a low probability but high consequence problem.
Weak facets buried on Feb 20th. It is prudent to keep this on your radar with warmer temperatures as reactivity may increase. Cornices will have the potential to fail and trigger slabs below.
Cornices failures have been observed and are triggering avalanches on the Feb 20th FC layer.
More activity noted at this layer, mostly initiated by large loads (cornices) in steep terrain.
Cornices can be extremely destructive alone or, may initiate deeper layers in the snowpack below.
The sun is packing a punch these days, and surface snow can destabilize on steep solar aspects when it comes out.
Cornices have grown quite large. It's hard to predict when one might fall, but rising temperatures and strong sunshine will make it much more likely.
Warm spring temperatures have caused many cornices to fail this week. While most cornice falls have not pulled slabs beneath them, the sheer volume of the cornice itself, produced large destructive avalanches.
More activity noted at this layer, mostly initiated by large loads (cornices) in steep terrain.
Cornices can be extremely destructive alone or, may initiate deeper layers in the snowpack below.
Snowfall amounts of 5-10cm will fall on sun crust on steep solar aspects into the alpine, a temp crust below 1800m on all aspects and surface hoar 5-10mm in isolated shaded areas. Sluffs in steep, confined terrain could have severe consequences.
Snowfall amounts of 5-10cm will fall on sun crust on steep solar aspects into the alpine, a temp crust below 1800m on all aspects and surface hoar 5-10mm in isolated shaded areas. Sluffs in steep, confined terrain could have severe consequences.
Watch for pockets of windslab in lee terrain.  These will increase in size with ongoing flurries and wind through the weekend.
Warm spring temperatures have caused many cornices to fail this week. While most cornice falls have not pulled slabs beneath them, the sheer volume of the cornice itself, produced large destructive avalanches.
More activity noted at this layer, mostly initiated by large loads (cornices) in steep terrain.
Cornices can be extremely destructive alone or, may initiate deeper layers in the snowpack below.
Warm temps, fresh snow and wind are a perfect recipe for storm slab development.&nbsp; These will be most reactive where they overlie surface hoar, or a solid melt-freeze crust.
Expect loose snow to run readily in steep terrain.
More activity noted at this layer, mostly initiated by large loads (cornices) in steep terrain.
Cornices can be extremely destructive alone or, may initiate deeper layers in the snowpack below.
Small isolated wind slabs can be found on lee slopes in the alpine. Expected this new slab development to overlay a sun crust on solar aspects.
Small isolated wind slabs can be found on lee slopes in the alpine. Expected this new slab development to overlay a sun crust on solar aspects.
Warm temps, fresh snow and wind are a perfect recipe for storm slab development. These will be most reactive where they overlie surface hoar, or a solid melt-freeze crust.
Expect loose snow to run readily in steep terrain that is sheltered from the wind in the alpine and treeline. The new snow seems to be bonding better below 1800m, but upper elevations of BTL may still have fast running new snow over a crust.
Small isolated wind slabs can be found in lee areas of the alpine that could be triggered by skiers in steep terrain. On solar aspects these wind slabs may sit over a buried sun crust that can act as a sliding layer.
There has been enough recent snow to produce dry loose avalanches in steep gullies and couloirs over the past couple days. These could occur naturally with additional snow and wind, or be triggered by skiers in steep terrain.
More activity noted at this layer, mostly initiated by large loads (cornices) in steep terrain.
Recently formed wind slabs in immediate lees, suspected to increase in reactivity with added solar input especially in areas where they overlie sun crust.
Small isolated wind slabs can be found in lee areas of the alpine that could be triggered by skiers in steep terrain. On solar aspects these wind slabs may sit over a buried sun crust that can act as a sliding layer.
There has been enough recent snow to produce dry loose avalanches in steep gullies and couloirs over the past couple days. These could occur naturally with additional snow and wind, or be triggered by skiers in steep terrain.
Up to 45cm of new snow has fallen since Saturday, and has been accompanied by moderate to strong south winds promoting the formation of storm slabs. These slabs will be most reactive where they overlie surface hoar, or a solid melt-freeze crust.
Expect loose snow to run readily in steep terrain that is sheltered from the wind in the alpine and treeline. The new snow seems to be bonding better below treeline.
Recently formed wind slabs can be found in lee features near ridge crests, and in cross-loaded gullies.
Enough new snow has fallen over the past few days to produce Loose Dry avalanches in steep terrain. Use caution in exposed or confined features where small avalanches can have high consequences.
Little pulses of snow over the next few days paired with periods of variable wind will build slabs in immediate lee features. Assess the bond of slab to the crust below, and use small representative test slopes to get a picture of reactivity.
Small isolated wind slabs can be found in lee areas of the alpine that could be triggered by skiers in steep terrain. On solar aspects these wind slabs may sit over a buried sun crust that can act as a sliding layer.
There has been enough recent snow to produce dry loose avalanches in steep gullies and couloirs over the past couple days. These could occur naturally with additional wind, or be triggered by skiers in steep terrain.
In places with 25-35+ cm of storm snow over the March 19 interface of facets, spotty surface hoar or sun crust, some small soft slabs are failing with skier traffic in steep terrain. This is not as much of a problem in areas with less storm snow.
Small isolated wind slabs can be found in lee areas of the alpine that could be triggered by skiers in steep terrain. On solar aspects these wind slabs may sit over a buried sun crust that can act as a sliding layer.
There has been enough recent snow to produce dry loose avalanches in steep gullies and couloirs over the past couple days. These could occur naturally with additional wind, or be triggered by skiers in steep terrain.
In places with 25-35+ cm of storm snow over the March 19 interface of facets, spotty surface hoar or sun crust, some small soft slabs are failing with skier traffic in steep terrain. This is not as much of a problem in areas with less storm snow.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Moderate winds have coaxed 30-45cm of recent storm snow into a cohesive and reactive slab in exposed areas. This slab sits atop a crust on steep solar aspects and surface hoar on shaded aspects. This layer is reactive to </span><a href="https://www.avalanche.ca/mountain-information-network/submissions/8a7dc13d-8ba9-11eb-8350-2aa6f37f3087" target="_blank"><span class="s_9255B882">skier triggers. </span></a><span class="s_AA239
Today's weather forecast calls for sunny periods. Although the day is starting off cold, intense spring sun combined with recently deposited snow will lead to loose avalanches on steep solar terrain this afternoon.
Recently formed wind slabs can be found in lee features near ridge crests, and in cross-loaded gullies.
Enough new snow has fallen over the past few days to produce Loose Dry avalanches in steep terrain. Use caution in exposed or confined features where small avalanches can have high consequences.
Small isolated wind slabs can be found in lee areas of the alpine that could be triggered by skiers in steep terrain. On solar aspects these wind slabs may sit over a buried sun crust that can act as a sliding layer.
There has been enough recent snow to produce dry loose avalanches in steep gullies and couloirs over the past couple days. These could occur naturally with additional wind, or be triggered by skiers in steep terrain.
In places with 25-35+ cm of storm snow over the March 19 interface of facets, spotty surface hoar or sun crust, some small soft slabs are failing with skier traffic in steep terrain. This is not as much of a problem in areas with less storm snow.
Small isolated wind slabs can be found in lee areas of the alpine that could be triggered by skiers in steep terrain. On solar aspects these wind slabs may sit over a buried sun crust that can act as a sliding layer.
There has been enough recent snow to produce dry loose avalanches in steep gullies and couloirs over the past couple days. These could occur naturally with additional wind, or be triggered by skiers in steep terrain.
In places with 25-35+ cm of storm snow over the March 19 interface of facets, spotty surface hoar or sun crust, some small soft slabs are failing with skier traffic in steep terrain. This is not as much of a problem in areas with less storm snow.
Strong winds have created a wind slab problem in exposed areas at treeline and above. These slabs are 15-30cm think and are reactive to human triggers. Extra caution is required where micro terrain features contribute to pockets of wind loading.
The March 18th persistent weak layer is buried approximately 50cm and appears as a crust on solar aspects and surface hoar on shaded aspects at treeline. This layer is most reactive in areas where wind loading has increased slab cohesion.
Small wind slabs can be found in lee areas of the high alpine that could be triggered by skiers in steep terrain. On solar aspects these wind slabs may sit over a buried sun crust that can act as a sliding layer.
Gathering information on this interface - still could be reactive to skiers where there is 25-35+ cm of storm snow over the March 19 interface of facets, spotty surface hoar or sun crust, . It's not a problem in areas with less storm snow.
Small wind slabs can be found in lee areas of the high alpine that could be triggered by skiers in steep terrain. On solar aspects these wind slabs may sit over a buried sun crust that can act as a sliding layer.
Gathering information on this interface - still could be reactive to skiers where there is 25-35+ cm of storm snow over the March 19 interface of facets, spotty surface hoar or sun crust, . It's not a problem in areas with less storm snow.
Strong winds have created a wind slab problem in exposed areas at treeline and above. These slabs are 15-40cm thick and are reactive to human triggers. Extra caution is required where terrain features contribute to cross loading
The March 18th persistent weak layer is buried approximately 50cm as a suncrust and in shaded, sheltered areas at treeline as surface hoar. This layer is most reactive in areas where wind loading has increased slab cohesion
Recent snowfall paired with periods of variable wind will continue to build slabs in immediate lee features. Assess the bond of slab to the crust below, and use small representative test slopes to get a picture of reactivity.
Watch for wind slab development along ridge lines as the winds are forecasted to increase on Friday and there is plenty of dry loose snow for transport.
This problem exists in steep alpine terrain, limit your exposure to overhead hazards that could have serious consequence in exposed terrain.
Recently formed wind slabs can be found in lee features near ridge crests, and in cross-loaded gullies.
Enough new snow has fallen over the past few days to produce Loose Dry avalanches in steep terrain. Use caution in exposed or confined features where small avalanches can have high consequences.
Watch for wind slab development along ridge lines as the winds are forecasted to increase on Friday and there is plenty of dry loose snow for transport.
This problem exists in steep alpine terrain, limit your exposure to overhead hazards that could have serious consequence in exposed terrain.
The March 18th persistent weak layer is buried approximately 50cm as a suncrust and in shaded, sheltered areas at treeline as surface hoar. This layer is most reactive where sunny spells and mild temperatures are affecting the upper snowpack
Strong winds have created a wind slab problem in exposed areas at treeline and above. These slabs are 15-40cm thick. Extra caution is required where terrain features contribute to cross loading
Watch for wind slab development in the alpine and exposed treeline areas as the winds are forecasted to increase on Saturday with plenty of dry, loose snow for transport.
With increased winds and lots of dry, loose snow, expect this problem to increase in higher alpine terrain over the course of the day.
Recently formed wind slabs can be found in lee features near ridge crests, and in cross-loaded gullies.
Enough new snow has fallen over the past few days to produce Loose Dry avalanches in steep terrain. Use caution in exposed or confined features where small avalanches can have high consequences.
Watch for wind slab development in the alpine and exposed treeline areas as the winds are forecasted to increase on Saturday with plenty of dry, loose snow for transport.
With increased winds and lots of dry, loose snow, expect this problem to increase in higher alpine terrain over the course of the day.
Strong winds have created a wind slab problem in exposed areas at treeline and above. These slabs are 20-50cm thick.
The March 18th persistent weak layer is buried approximately 50-70cm deep as surface hoar in sheltered areas around treeline, and a suncrust on solar aspects.
Storm slabs will begin to build Saturday evening, becoming the primary problem of concern by Sunday.
Fresh wind slabs will be most reactive during the storm on Sunday / Monday. Periods of intense wind transport may cause wind slabs to form low in start zones.
Widespread wind slab development in the alpine and exposed treeline areas is expected as strong to extreme winds and up to 30cm of new snow loads lee slopes on Sunday.
Expect 20-30cm of storm slab development in sheltered areas. We are uncertain of how this new snow will bond to the old surface.
Widespread wind slab development in the alpine and exposed treeline areas is expected as strong to extreme winds and up to 30cm of new snow loads lee slopes on Sunday.
Expect 20-30cm of storm slab development in sheltered areas. We are uncertain of how this new snow will bond to the old surface.
Recently formed wind slabs can be found in lee features near ridge crests, and in cross-loaded gullies.
Forecasted new snowfall, warm temperatures and moderate to strong winds may be the triggers that wake up this layer.
30 cm of snow is forecasted in the next 24h. Use caution in exposed or confined features where small avalanches can have high consequences.
Warms temps, wind and heavy snowfall are the perfect recipe for storm slab development.
Cornices are huge and expected to fail naturally with snowfall and wind today.
The March 18th persistent weak layer is buried approximately 60-80cm deep as surface hoar in sheltered areas around treeline, and a suncrust on solar aspects.
Recently formed wind slabs can be found in lee features near ridge crests, and in cross-loaded gullies.
The new snow along with warm temperatures may lead to the formation of storm slabs. The distribution BTL is dependant on the freezing levels Sunday afternoon / evening (elevations where it is raining and below will not have a storm slab problem).
New snowfall, warm temperatures and moderate to strong winds may be the triggers that wake up this layer.
Fresh wind slabs will be most reactive during the storm on Sunday / Monday. Periods of intense wind transport may cause wind slabs to form low in start zones.
Widespread wind slab development in alpine and some exposed treeline areas is expected from strong to extreme SW winds and 10 to 35 cm of new snow. Use caution in any steep or loaded terrain until you have a sense for how reactive the new snow is.
The new snow will sluff easily in steep terrain, especially in areas that received the largest amounts over the past 24 hours.
Widespread wind slab development in alpine and some exposed treeline areas is expected from strong to extreme SW winds and 10 to 35 cm of new snow. Use caution in any steep or loaded terrain until you have a sense for how reactive the new snow is.
The new snow will sluff easily in steep terrain, especially in areas that received the largest amounts over the past 24 hours.
A significant storm yesterday brought plenty of snow, wind, and warm temperatures to Rogers Pass. These weather conditions formed excellent conditions for slab avalanches!
Cornices have been growing at an exponential rate during this storm. March is a great time of year to elude cornices, try and avoid approaching them from above and below when accessing your line.