This layer remains a concern in isolated areas above treeline and may be triggered by large loads such as cornices, surface slides or from shallow areas by skiers. The entire snowpack throughout the forecast region is riding on 20cm of depth hoar.
In wind exposed areas and at higher elevations, moderate W winds have created soft slabs. These are primarily isolated to immediate lees at this time. In more sheltered areas, this may not be a problem - watch for wind effect on the surface!
The base of the snowpack remains weak due to basal depth hoar/facets. Continue to avoid large open slopes with shallow snow and rocks, as this is the kind of place where this deep weakness could be triggered.
There is 30-50 cm of loose snow available for windslab formation at higher elevations. Currently these windslabs are very isolated or non-existent, but this will change immediately with any wind. Watch for blowing snow and beware when it happens.
30 - 50 cm of low density powder will sluff easily and run fast and far on the Jan. 30th crust. Watch your sluff in steep terrain and heads up if the wind picks up.
At treeline and above a soft slab is forming which sits on a firm bed surface. This storm slab is triggerable, and may propagate widely. In areas sheltered from the wind the loose storm snow may sluff on steep slopes, gaining mass.
The January 15 surface hoar layer is down 70-110cm. Large triggers, like a cornice fall or other avalanches, are likely required to trigger this layer. Rapid loading forecast by Friday may reactivate this layer.
Windslabs have developed on lee and cross loaded features at alpine elevations.
This layer remains a concern in isolated areas above treeline and may be triggered by large loads such as cornices, surface slides or from shallow areas by skiers. The entire snowpack throughout the forecast region is sitting on 20cm of depth hoar.
Windslabs exist in isolated areas at higher elevations, and this problem will increase late in the day on Thursday as the storm arrives.&nbsp; The bond to the surface under the windslabs is suspicious, so watch out as this new storm changes conditions.
There is 30-50 cm of loose snow available for windslab formation at higher elevations. Currently these windslabs are very isolated or non-existent, but this will change on Thursday as the next storm arrives.
A soft slab is forming which sits on a firm bed surface. This storm slab is triggerable and may propagate widely due to buried surface hoar on a crust. Continued loading through the storm will increase reactivity and the size of resulting avalanches.&nbsp;
The January 15 surface hoar layer buried down 70-110cm is still reactive in many areas. Rapid loading over the next few days may overload it, or storm slab avalanches may step down to this layer.
Another 50+ cm and strong alpine winds are expected over the next 48 hours. Expect rampant storm slabs to be forming and failing either within the storm snow or on the Jan 30 interface, especially at upper elevations.
30-50 cm of low density powder currently, and 50+cm more over the next 48 hours will sluff easily and run fast and far on the Jan. 30th crust or within the storm snow itself. Watch your sluff in steep terrain and heads up if the wind picks up.
These slabs could grow rapidly with mild temps, moderate winds and heavy snow forecast. If freezing levels rise wet slabs could be very touchy at lower elevations. Monitor slab depths and resistance by feeling for the crust. Watch forecasts closely.
The Jan 30th interface has proven reactive with light inputs of new snow. This new storm will only continue to overload that layer. Also, treat recently re-loaded bed surfaces with caution as this layer will not go away easily.
Intense loading continues with a new input of snow on lee and cross loaded features at all elevations.
Storm slabs will be rampantly forming and failing, especially at higher elevations. The bond to the Jan 30 interface and within the storm snow itself will be critical to monitor.
The base of the snowpack remains weak due to basal depth hoar/facets. Additional snow load or a storm slab failure may trigger large to very large avalanches in thin snowpack areas. See forecast details for a photo example of this from today.
25-30cm of heavy snow over lighter snow will make conditions dangerous until the rain and snow stop and temperatures cool down.
Rapid loading and warm temperatures are the types of conditions that can re-awaken buried weak layers. Storm slab avalanches may step down to these  layer as well.
Storm slabs are the primary issue in the upper snowpack and failures will be occurring both within the colder low density and on the January 30th crust interface. This problem will be most prominent in the alpine and treeline bands on all aspects.
The base of the snowpack remains weak due to basal depth hoar/facets. Additional snow load, or a storm slab failure may trigger large to very large avalanches in thin snowpack areas. There were additional avalanches triggered on these facets today.
Another 20+ cm and strong alpine winds are expected over the next 12 hours. Expect rampant storm slabs to be forming and failing either within the storm snow or on the Jan 30 interface, especially at upper elevations.
45-70 cm's of new storm sits on a crust from january 30th. This interface should be considered suspect and large avalanches could have the potential to step down the basal facets for full depth releases in Alpine and TL start zones.
100mm of precipitation that fell as rain and snow is now sitting over the January 30 weak layer. This will make conditions dangerous until the rain and snow stop and temperatures cool down.
Recent intense precipitation and warm temperatures have the ability to reawaken deeper layers. Storm slabs avalanches may step down and propagate on these deep instabilities.
Thick storm slabs can be found on all aspects at treeline and above.
This layer remains a concern in isolated areas above treeline and may be triggered by large loads.
Expect storm slabs to continue to fail, either within the storm snow or on the Jan 30 interface, especially at upper elevations.
There is now about 1m of heavy storm snow above 1900m where temps have stayed below freezing. This storm slab is the triggering layer for recently observed large avalanches with far-reaching moist deposits.
Fifty to 90 cm of storm snow exist on the January 30th crust interface. A poor bond exists at this interface and large avalanches have been observed running on this layer.
The base of the snowpack remains weak due to basal depth hoar/facets. Additional snow load, or a storm slab failure may trigger large to very large avalanches in thin snowpack areas.
50 to 90 cm of storm snow lays over the Jan 30 crust interface. A weak bond exists on this interface and storm snow avalanches are very likely.
With around 1m of settled storm snow over the last week, much of that rain below 1600m, time will be needed for instabilities within it to heal.
Persistent weak layers within the top 150cm of the snowpack should not be discounted just yet. Storm slabs avalanches may step down and propagate on these deep instabilities.
At upper elevations the new snow combined with mild temperatures and strong SW winds has created 50cm soft slabs. Rain crusts overly these new slabs to 2200m. Be cautious with steep or unsupported terrain until these slabs can settle and cool.
Fifty to 90 cm of storm snow exist on the January 30th crust interface. A poor bond exists at this interface and large avalanches have been observed running on this layer. Huge propagations are still possible.
50 to 90 cm of storm snow lays over the Jan 30 crust interface. A weak bond exists on this interface and storm snow avalanches are possible.
A warm, wet and windy storm over the weekend created a storm slab that is up to 1m deep. On lee slopes, wind loading may have made this slab much deeper and more reactive. 
Persistent weak layers within the top 150cm of the snowpack should not be forgotten. They continue to be reactive, and produce very large avalanches. Storm slabs avalanches may step down and propagate on these deep instabilities.
Natural activity has settled down but approach any slopes with caution before jumping in.
Most avalanches triggered on the upper layers are stepping down to the basal weaknesses resulting in very large, destructive avalanches.
Persistent weak layers within the top 150cm of the snowpack should not be forgotten. They continue to be reactive, and produce very large avalanches. Smaller avalanches or cornice failures may step down and propagate on these deep instabilities.
A warm, wet and windy storm over the weekend created a storm slab that is up to 1m deep. On lee slopes, wind loading may have made this slab much deeper and more reactive. Tests indicate that the slab is stabilizing, but triggering is still possible.
50 to 90 cm of storm snow exist on the January 30th crust interface. A poor bond exists at this interface and large avalanches have been observed running on this layer. Huge propagations are still possible.
Recent winds have created wind slabs in the lee of alpine features.
The base of the snowpack remains weak due to basal depth hoar/facets. Initiation of a wind slab or a storm slab may step down to trigger large to very large avalanches in thin snowpack areas.
The 1 meter of storm snow has transitioned into a persistent slab. This slab is sitting on a raincrust/surface hoar weakness.
Persistent weak layers within the top 150cm of the snowpack should not be forgotten, especially while temperatures remain warm. Smaller avalanches or cornice failures may step down and propagate on these deep instabilities.
50 to 90 cm of storm snow exist on the January 30th interface which is a crust below 2000m and facets above. A poor bond exists at this interface and large avalanches have been observed running on this layer. Wide propagations are still possible.
The base of the snowpack remains weak due to basal depth hoar/facets. Initiation of a wind slab or a storm slab may step down to trigger large avalanches in thin snowpack areas.
These slabs are sitting on a surface hoar layer in sheltered areas. Triggering of these slabs is possible even in low angle terrain .
At treeline and above expect to find superficial slabs formed by SW winds this week.
These slabs that formed last weekend are sitting on a firm surface or crust 50 to 80cm deep. With continued warm conditions these slabs remain possible to trigger in many areas. The deep persistent layers could also be triggered in isolated areas.
With rising freezing levels expect wet avalanches at all elevations. The forecast is for clouds, but should the sun emerge watch for natural avalanches from steep solar aspects. Loose avalanches can gain mass and momentum quickly.
Deep soft slabs are sitting on this reactive layer. Triggering of these slabs is possible even in low angle terrain .
15cm of overnight snow with moderate southerly winds have likely formed some soft slabs on and near ridge crests in the alpine.
Forecasters are doubtful that cooler temperatures will improve this weakness in the short term.  Triggering of these slabs is possible even in low angle terrain .
This layer has become more reactive with recent weather. Even light loads are enough to trigger full depth avalanches.
Recent winds from many directions have formed wind slabs prime for human triggering.
The base of the snowpack remains weak due to basal depth hoar/facets. Avalanches have been seen to either fail on this layer, or start as a wind slab which steps down to the ground.
Winds from many different directions have formed fresh wind slabs. These are primed for human triggering.
Recent storm snow has likely formed some soft slabs on and near ridge crests in the alpine.
Solar radiation will be a factor to consider for the next few days. Manage your groups exposure to sun effected slopes and to the overhead cornice hazard. Watch for loose avalanches off of cliffs as indicators of instabilities.
We have persistent weak layers down between ~1 to 1.5m. Large triggers such as a cornice failure or triggering from shallow areas may release avalanches these layers.
The base of the snowpack remains weak due to the presence of basal depth hoar and facets. Avalanches have been seen to either fail on this layer, or start out as a wind slab and then step down to this layer with wide propagations.
Winds from both the SW and NW have formed fresh wind slabs in open areas above tree line. These are slowly settling out but can still be triggered and may step down to the basal weak layers.
This layer has become more reactive with the recent weather. The weight of skiers, a cornice collapse or surface slides could be enough to trigger these deep and destructive avalanches.
Moderate to strong westerly winds have led to the development of windslabs on lee and cross loaded features.
Recent winds from many directions have formed wind slabs that are susceptible to human triggering. Recent cornice growth is also a concern as these may trigger any deep weak layers that are present in the snowpack.
Large cornices throughout the Park will be taking in a good dose of solar radiation today for the first time. Manage your groups exposure to this overhead hazard even on shaded slopes as the cornices above are still in the sun.
Solar radiation will be a factor today and for the next few days on sun effected. Watch for loose avalanches off of cliffs and moist snow as indicators of snow instabilities.
We have persistent weak layers down between ~1 to 1.5m. A large load such as a cornice failure will be needed to trigger these layers. Alternatively humans may be able to trigger them from shallow areas.
Although these old slabs have seen a lot of abuse from warm temperatures they do produce the only shears in the upper snowpack. Keep an eye on these if you are considering taking on serious terrain.
Now 40 to 120cm deep these slabs continue to stand out as a concern in the TL and ALP areas where there is not a strong Jan 31 crust over them (2200m+). Be particularly mindful in thin snowpack areas where this layer is more likely to be triggered.
Given the amount of sun in the forecast and that cornices exist above some of the more sensitive snowpack areas out there right now, keep your mind tuned to your exposure. These big triggers may get the deep persistent slabs moving.
The base of the snowpack remains weak due to the presence of basal depth hoar and facets. Avalanches have been occurring on this layer daily: either failing on this layer, or stepping down to this layer with wide propagations.
Winds from both the SW and NW have formed fresh wind slabs in open areas above tree line. These are settling out but can still be triggered and may step down to the basal weak layers.
Cornice failures or skier travel in shallow snowpack areas are likely ways to trigger this deep weakness in the snowpack.
5-15cm of snow over a firm surface can be released as loose avalanches with solar effect. Solar radiation today will be strong with clear skies.
Large cornices throughout the Park will be getting more solar radiation today. Manage your groups exposure to this overhead hazard even on shaded slopes as the cornices above are still in the sun.
Caution in shallow and unsupported areas where wind slab has formed.
The base of the snowpack remains weak due to the presence of basal depth hoar and facets. Natural activity is tapering off, however human triggering is still likely on this layer.
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</style><p class="p_CC664AAA"><a href="https://www.facebook.com/ParksMountainSafety/photos/a.778767212173270.1073741874.145133538869977/791098590940132/?type=1&amp;theater" target="_blank"><span class="s_9255B882">Impressive avalanches </span></a><span class="s_AA239A9B">have been triggered recently by cornices falling on slopes, some failing to deep basal layers. Minimize exposure to slopes with cornices above even if you are in the shade, as the cornices above are still in the sun.
Persistent weak layers down ~1 to 1.5m will likely need a large load such as a cornice failure to be triggered. A light load, like you, may be able to trigger them from shallow areas. If triggered these layers continue to propagate widely.
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.778767212173270.1073741874.145133538869977/791098590940132/?type=1&amp;theater" target="_blank"><span class="s_9255B882">Impressive avalanches </span></a><span class="s_AA239A9B">have been triggered recently by cornices falling on slopes, some failing to deep basal layers. Minimize exposure to slopes with cornices and use caution while traveling along ridges.
Persistent weak layers down ~1 to 1.5m will likely need a large load such as a cornice failure to be triggered. A light load, like you, may be able to trigger them from shallow areas. When triggered these layers continue to propagate widely.
Watch for thin areas where facetted layers may be triggered.
Be cautious near ridge-crests and in lee areas.
Moderate ridge top winds mainly from the West have developed thin new slabs at treeline and above these will continue to develop with the addition of new snow on Friday.
These old windslabs continue to  produce reluctant shears 25 to 50 cm deep in the upper snowpack and are a concern above 2200m. Keep an eye on these if you are considering taking on serious terrain.
Strong and steady overnight winds heave caused wind slab development on lee features. If triggered, winds slabs may propagate larger than expected on a buried crust up to 2200m. Fragile cornice growth at ridge line will be touchy today.
The base of the snowpack is weak due to the presence of basal depth hoar and facets. Natural activity has ceased but skier triggering is still possible on this layer especially in shallow areas and places where the snowpack is unevenly distributed.
Watch for thin, shallow and/or rocky areas where facetted layers may be triggered.
Strong and steady winds heave caused soft slab development on all aspects. If triggered, wind slabs may propagate larger than expected on a buried crust up to 2200m. Fragile cornice growth at ridge line will continue to be touchy.
Persistent weak layers down ~1 to 1.5m will likely need a large load such as a cornice failure to be triggered. A light load, like you, may be able to trigger them from shallow areas. When triggered these layers may propagate widely.
The lower half of the snowpack is weak due to the presence of basal depth hoar and facet layers. Natural activity has ceased but skier triggering is still possible, especially in shallow areas and places where the snowpack is unevenly distributed.
Be cautious near ridge-crests and in lee areas. These seem to be isolated to the Icefields Parkway region (found on Observation sub-peak Saturday). These will be a short term problem.
Recent winds from many directions (North on Saturday) have formed wind slabs that are susceptible to human triggering. Recent cornice growth is also a concern as these may trigger any deep weak layers that are present in the snowpack.
Winds slabs have gained critical cohesion and can be triggered by human loads.  Wind slabs may propagate larger than expected on a buried crust up to 2200m. Fragile cornice growth at ridge line will continue to be touchy.
Be cautious near ridge-crests and in lee areas. These seem to be isolated to the Icefields Parkway region.
Caution in shallow and unsupported areas where wind slabs have formed.
Pockets of wind slab in lee features can be triggered by riders. Wind slabs up to 50cm thick could propagate on a buried crust up to 2200m and surface hoar above that. Cornices are weakening with the temperature swings and are becoming more touchy.
Persistent weak layers down 1 to 1.5m will need a large load such as a cornice failure to be triggered. A light load may be able to trigger them from shallow areas. Heads up when traveling on slopes that could be affected by weakening cornices.
The sun is starting to pack a punch! Although forecasted temperatures are cooler over the next few days, it is still a good idea to stay out from under steep rocky terrain during the heat of the day!
Fresh slabs can be found near ridgecrests at Treeline and in any lee features in the Alpine. Expect these to be sensitive to skier triggering especially while the temperatures remain warm Tuesday.
Now 50 to 150cm deep these slabs continue to stand out as a concern in the TL and ALP areas where there is not a strong Jan 31 crust over them (2200m+). Be particularly mindful in thin snowpack areas where this layer is more likely to be triggered.
Variable winds have resulted in wind slabs on exposed slopes. Wind slabs up to 50cm thick could propagate on a buried crust or surface hoar. Cornices are becoming more touchy and have triggered deep slabs recently.
Deep persistent weak layers will need a large load such as a cornice fall or another avalanche to be triggered. A light load may be able to trigger them from shallow areas. Heads up when traveling on slopes threatened by cornices above.
There are several weak layers in the snowpack that are now difficult to trigger but result in very large avalanches when they do fail. Strong solar radiation or a large cornice failure are possible triggers.
The lower half of the snowpack is weak due to the presence of basal depth hoar and facet layers. Natural and human triggering is unlikely, but possible in steep open slopes with shallow snow, or south and west facing terrain during mid-day.
Triggering this weakness requires a large load (such as a cornice) in areas of deeper snowpack but could be triggered by skiers hitting the weak spot in a shallow snowpack.
There are several weak layers in the snowpack that are now difficult to trigger but result in very large avalanches when they do fail.  Strong solar radiation or a large cornice failure are possible triggers.
Triggering this weakness will require a large load (such as a cornice) in areas of deeper snowpack.
Entrances or convexities with obvious wind effect are likely areas where you may find a shallow wind slab.
Buried windslabs are hiding under the recent low density snow at ridgecrests and lee features. New slabs will develop over Fri/Sat with NE winds and 20-30cm available for transport. This will be touchy until temperatures start to warm up next week.
Now 70 to 180cm deep these slabs continue to stand out as a concern in the TL and ALP areas where there is not a strong Jan 31 crust over them (2200m+). Be particularly mindful in thin snowpack areas where this layer is more likely to be triggered.
There are several weak layers in the snowpack that are now difficult to trigger but&nbsp; may result in large avalanches if they do fail. Strong solar radiation or a large cornice failures are possible triggers.
There are several weak layers in the snowpack that are now difficult to trigger but may result in large avalanches if they do fail. Strong solar radiation or a large cornice failures are possible triggers.
Isolated pockets of wind slab are still reactive to skiers if you find the right spot on a lee feature with underlying crust. The 5cm of snow expected tonight will make it harder to spot a loaded feature.
Up to 5cm of snow will make it harder to spot a loaded area. Isolated pockets of wind slab are still reactive to skiers if you find the right spot on a lee feature with underlying crust.  Keep this in mind particularly on exposed features.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. Natural and human triggering is unlikely, but possible in steep, open , rocky slopes with shallow snow.
Up to 15cm of recent snowfall and winds from the north have created reverse loading in the alpine.
There are a number of weak layers in the snowpack that are hard to trigger but could result in large avalanches if they fail. Large cornice fall or prolonged strong solar radiation are possible triggers.
Recent new snow was just enough to make it harder to spot wind loaded pockets.&nbsp; Isolated pockets of wind slab are still reactive to skiers given the right location on steep lee features.&nbsp; Keep this in mind if committing to steep exposed terrain.
With up to 40cm of low density new snow over the last week, any steep slope could see sluffing. These may not be big enough to bury a person but could knock you over and have serious consequences in the wrong place.
New slabs have developed with the recent snow and NE winds, creating windslabs in places they may not usually be seen. As temperatures warm up and SW build more windslabs on Wed and Thur there will be a spike natural avalanche activity.
These slabs continue to stand out as a concern in the TL and ALP areas where there is not a strong Jan 31 crust over them (2200m+). Be particularly mindful in thin snowpack areas where this layer is more likely to be triggered.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. Natural and human triggering is unlikely, but it is still a good idea to avoid steep, open, rocky slopes with shallow snow.
Northerly winds early this week created isolated windslabs in unusual places. Small pockets of wind slab have been reactive on steep lee features. These are of most concern on steep, aggressive terrain where the consequences of a fall are severe.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. Natural and human triggering is unlikely as the weak layer is dormant, but it is still a good practice to avoid steep, open, rocky slopes with shallow snow.
Northerly winds early this week created isolated wind-slabs in unusual places. Small pockets of wind-slab have been reactive on steep lee features. These are of most concern on steep, aggressive terrain where the consequences of a fall are severe.
Strong winds are redistributing snow into slabs on sheltered aspects and cross loaded features in the alpine.
Natural and human triggering is unlikely but it is still a good practice to avoid steep, open, rocky slopes with a shallow snowpack.
Steep, unsupported terrain is a likely trigger spot for these newly formed hard slabs that are found in all open areas at treeline and above.
SW winds continue to form wind slabs.  Expect wind effected snow on all aspects. Small pockets of wind slab have been reactive to skiers.  Extra caution should be used in steep terrain where a small slab could result in a big fall.
Strong winds continue to form touchy slabs. Small pockets of wind slab have been reactive to skiers. On south aspects, wind slabs overlie a crust. Caution should be used in steep and exposed terrain where a small slab could result in a big fall.
Strong winds have formed touchy slabs. Small pockets have been reactive to skiers at or near ridge crests. Winds have come from all directions over the last week so lee slopes include all aspects.
Watch for sluffing to start out of exposed rocky areas where the suns heat has more impact. Limit your travel in steep exposed slopes during the middle of the day.
These slabs are still a concern where the slope hasn't been sun effected. Steep, unsupported terrain is a likely trigger spot for these hard slabs that are found in shaded NE areas at treeline and above.
Strong winds have built large cornices on ridgetops that could fail with the warm temperatures and sun exposure. Avoid travelling under exposed slopes during the heat of the day.
Pockets of reactive windslab exist on all aspects due to variable wind directions. These pockets have been reactive to skiers at or near ridge crests, and are increasingly reactive with warm temperatures or when receiving solar radiation.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may waken up with the warm temperatures. Avoid steep, open, rocky slopes with a shallow snowpack.
Moderate SW winds continue to  redistribute the snow into slabs on sheltered aspects and cross loaded features in the alpine.
Pockets of reactive windslab exist on all aspects due to variable wind directions. These pockets have been reactive to skiers at or near ridge crests and are increasingly reactive with warm temperatures.
Previous moderate SW winds have created slabs on sheltered aspects and cross loaded features in the alpine.
Recent winds have moved small amounts of dry snow into isolated pockets of windslab in higher alpine areas. Watch immediate leeward slopes, and slope test on smaller slopes adjacent. Several skiers have been caught in small ones this week.
New moist snow, with strong southerly winds are forming new windslabs in the alpine. They may bond poorly in areas where they overly crusts, or may be hiding deeper old windslabs. Continued warm temps are making the old windslabs more reactive.
5 - 10 cm's of new snow has been blown by strong west winds into small windslabs in the alpine. In some areas this covers isolated areas of older windslab that has been reactive to human triggering over the past week.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may waken up with the warm temperatures (especially east of the divide where temperatures have been warmer)
Watch for sluffing to start out of exposed rocky areas where the suns heat has more impact. Limit your travel in steep exposed slopes during Friday. Rain forecast for Sat will increase the likelihood of wet slides in saturated snow.
These slabs are a concern on shaded NE areas at treeline and above. Rain forecast for Sat will make these slabs more unstable and increase the avalanche danger. If these become rain soaked these could act as a wet slab avalanche.
These layers from early season are still a concern on N aspects in the alpine, especially in shallow snowpack areas. Warm temperatures and rain penetrating the snowpack could wake up these deep instabilities.
5-10 cms of new snow combined with moderate to strong west winds have created pockets of windslab in higher alpine areas. In some areas this is hiding old windslabs which have been reactive . Several skiers have been caught in small slides this week.
Warm temperatures and strong solar effect will continue to produce avalanches on steep solar facing terrain.
Strong winds at treeline at above have created a new series of windslabs in lee features. Despite warm temperatures, these new windslabs will likely need a few days to bond to older snow surfaces.
While not reactive recently, the deep persistent weakness could still be triggered by a smaller avalanche or cornice failure.
New moist snow with strong southerly winds have formed new wind slabs in the alpine. They may bond poorly in areas where they overly crusts, or may be hiding deeper old wind slabs. Continued warm temps are making the old wind slabs more reactive.
A poor overnight re-freeze combined with ongoing warm temperatures and sunshine will continue to destabilize the upper snowpack. The weak, moist surface snow may be easily triggered on steep slopes, gaining mass and traveling long distances.
Deep instabilities in the snowpack have been dormant in recent weeks but may become reactive. The bridging properties of near surface crusts weaken as the snowpack warms. New snow tonight will make persistent slabs a key problem for the weekend.
Snow and high winds Saturday will create poorly bonded windslabs.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may waken up with the warm temperatures , rain, or in shallow areas.
Wind slabs were reactive to skiers triggers yesterday.  Continued warm temperatures and a new precipitation will keep this problem primed today.  Widespread wind slabs at higher elevations may now be concealed by 10cm of new snow. 
A widespread loose wet natural avalanche cycle was observed yesterday afternoon. A poor overnight re-freeze combined with ongoing warm temperatures and new precipitation will continue to destabilize the upper snowpack.
Deep instabilities in the snowpack have been dormant in recent weeks but may become reactive. The bridging properties of near surface crusts weaken as the snowpack warms. New snow today will make persistent slabs a key problem.
20cm distributed by winds will make wind slabs touchy in the short term.
Up to 20cm with mod-strong West winds will form isolated wind slabs in lee features.  These may be touchy in the short term.
Storm slabs and strong SW winds are creating slab conditions on lee aspects. Triggering of these new slabs is likely.
Large cornices or surface avalanches are the likely trigger for this slumbering giant.
Sustained strong to extreme overnight winds. Wind slabs were reactive to human triggering prior to this last storm.
~20cm of dense storm snow at tree line and above. The first significant snowfall in quite some time overlies a variety of surfaces from crust, to facets to wind slab.
A multitude of crusts are buried within the top meter of the snowpack. These may become reactive with the new load we received or with solar radiation. The bridging properties of near surface crusts weaken as the snowpack warms.
Soft  slab conditions on lee alpine aspects appear to have bonded well in most locations.  Approach these features with caution and test bonding on the slope from a safe area before committing.
Large cornices or surface avalanches are the likely trigger.
15-20 cm with strong Westerly winds have formed isolated wind slabs in lee features. These may be touchy - especially where the slabs overlay old crusts on solar aspects.
Sustained strong to extreme SW winds Saturday night and Moderate N winds last night creating widespread wind slabs which are reactive to human triggering.&nbsp; Expect these slabs to become even more reactive with solar radiation.
A multitude of crusts are buried within the top meter of the snowpack. These have may become reactive with the new load we received and with solar radiation. The bridging properties of near surface crusts weaken as the snowpack warms.
Moderate to strong SW winds on Saturday evening created wind slabs that will be most touchy where they overly suncrusts.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may be more sensitive with the new load, especially in thin areas.
Soft slab conditions on lee alpine aspects appear to have bonded well in most locations. Approach these features with caution and test bonding on the slope from a safe area before committing.
Large cornices or surface avalanches are the likely trigger for this layer.
New slabs sitting on a newly formed crust can be found at all elevations but are much more significant at the upper limits of treeline and the alpine. These will be more reactive in steep or unsupported terrain and may be ripe in many start zones.
Skiers in steep terrain can expect the surface snow to sluff. Manage yourself and your group carefully to avoid getting caught by these small avalanches. Avoid terrain where a sluff could trigger a more significant storm slab.
Wind slabs created a few days ago remain a concern particularly combined with the warming and solar radiation that we are expected to get today. This is when they tend to become more reactive to human triggering.
Watch for moist snow and loose avalanches originating from cliffs as indications of instability. At lower elevations you can probe with your pole to see how thick the crust is and determine whether it is breaking down with day time warming.
A multitude of crusts and a surface hoar layer are buried within the top meter of the snowpack. These may become reactive with solar radiation as the bridging properties of near surface crusts weaken as the snowpack warms.
These wind slabs are becoming less sensitive, however human triggering is still possible. Likely this will come in the form of a hard wind slab rather than a soft one, if tested.
Windslabs are becoming less touchy. Expect to encounter more hard slabs than soft based on recent strong wind.
Touchy windslabs continue to be reactive to human triggering. They are most likely to be triggered from a convexity and may propagate widely. Recent winds have also added to cornices, which are fragile and if they fail provide a large trigger.
The upper snowpack is complex, with a multitude of crusts, weak facetted layers, and surface hoar. Solar radiation weakens surface crusts and may make these layers in the top 60cm more reactive. Large slab avalanches have occurred on these layers.
Soft slab conditions on lee alpine aspects appear to have bonded well in most locations. At 2400m a graupel layer marks the interface and may be below 65cm of wind blown snow from last week. This sheared with moderate force during field tests (18th)
These wind slabs have become less sensitive, however human triggering is still possible. Likely this will come in the form of a hard wind slab rather than a soft one, if tested.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may be more sensitive with forecasted new snow load, especially in thin areas.
Windslabs are becoming less touchy. Expect to encounter more hard slabs than soft based on recent strong wind and strong winds forecasted for Thursday.
Touchy windslabs continue to be reactive to human triggering. They are most likely to be triggered from a convexity and may propagate widely. The buried windslabs will be harder to identify, and new slabs are forming with the new snow and wind.
The upper snowpack is complex, with a multitude of crusts, weak facetted layers, and surface hoar. Large slab avalanches continue to sporadically occur on these layers. Cornices are large and fragile and if they fail provide a large trigger.
Watch for wind slab development over the next 24 hours in the lees of alpine features. These will be sensitive to triggering in isolated features such as ridge crests and will continue to be through the weekend.
New wind slabs will start to become more sensitive to human triggering Friday on lee features in the alpine.  This will continue through the weekend given the current forecast.
New snow continues to load the storm layer which is up to 40cm deep.&nbsp; In exposed lee areas, buried wind slabs within the storm snow will be difficult to identify visually.&nbsp; New&nbsp; snow, wind and warm temperatures will increase the hazard.
The slabs are continuing to build on N and E aspects with snow transport from strong SW winds. These will become more reactive with daytime heating. Large cornices could provide a trigger for avalanche activity and could be weakened by the heat.
As temperatures increase watch for moist snow to develop at lower elevations and climb in elevation as the day heats up. When the sun comes out this will happen quickly on solar slopes. Expect this moist snow to move easily over the buried crust.
These layers from early season are still a concern on N aspects in the alpine, especially in shallow snowpack areas. Warm temperatures penetrating the snowpack could wake up these deep instabilities.
5-10cm of recent storm snow has formed wind slabs up to 35cm in the lee areas of alpine features. These will be sensitive to human triggering on features such as ridge crests and cross loaded gullies. Cornices are also becoming a concern.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may become more sensitive with the forecasted new snow load, especially in thin areas.
New wind slabs are starting to become more sensitive to human triggering on lee features in the alpine. This will continue to increase through the weekend given the current forecast. Cornices will also be a concern with the new snow and wind.
These soft slabs have bonded well in most locations. Slab depths range from 25 to 65cm. Slabs sit on a graupel layer around Marmot and a facet layer elsewhere. Moderate shear tests have been found on this interface.
New snow continues to load the storm layer which is 40-60cm deep. In exposed lee areas, buried wind slabs within the storm snow will be difficult to identify visually. New snow, wind and warm temperatures will increase the hazard.
The upper snowpack is complex with a multitude of crusts, weak facetted layers, and surface hoar. Large slab avalanches continue to sporadically occur on these layers. Cornices are large and fragile and if they fail provide a large trigger.
10 cm of recent storm snow has formed wind slabs up to 35cm in the lee areas at treeline and above. These will be sensitive to human triggering on features such as ridge crests and cross loaded gullies. Cornices are also becoming a concern.
New wind slabs are starting to become more sensitive to human triggering on lee features at treeline and above.&nbsp; Cornices will also be a concern with the new snow and wind.
40-50cm of heavy storm snow will need some time to settle out and to bond to the crusts over which it lies. The associated winds were steady yesterday through the overnight period, creating soft slabs in exposed areas.
Lower elevations were saturated with rain over the last few days. Loose wet avalanches, gaining more mass than expected, have been easily triggered by backcountry riders in the area. Any solar radiation today will further increase this risk.
The upper snowpack is complex with a multitude of crusts, weak facetted layers, and surface hoar. There have been reports of skier triggered slab avalanches failing down 30-60cm on these crusts from neighboring areas.
Recent snowfall with moderate winds and rapid settlement from continued warm temperatures will make soft slab and windslab releases likely from lee features in the alpine and at treeline.
10 cm of recent storm snow has formed wind slabs up to 35cm in the lee areas at treeline and above. These will be sensitive to human triggering on features such as ridge crests and cross loaded gullies. Please see avalanche activity for recent obs.
New wind slabs are starting to become more sensitive to human triggering on lee features at treeline and above. Cornices will also be a concern with the new snow and wind.
40-55cm of heavy storm snow over three days will need some time to settle out and to bond to the crusts over which it lies. The associated winds with the storm were steady creating soft slabs in exposed areas.
Although thin in many areas, there are some significant slabs that have grown along the ridge crests. While warm temps limited growth at TL, be prepared for larger slabs above. New snow and continued west winds will continue to build these slabs.
These layers from early season are still a concern on N aspects in the alpine, especially in shallow snowpack areas.
Windslabs are still sensitive to human triggering on lee features at treeline and above. Cornices will also be a concern with the new snow and wind.
10 cm of recent storm snow has formed wind slabs up to 35cm in the lee areas at treeline and above. These will be sensitive to human triggering on features such as ridge crests and cross loaded gullies.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may become more sensitive with the recent new snow load, especially in thin areas.
Recent snowfall with moderate winds and rapid settlement from continued warm temperatures will create soft slabs and windslabs in lee features in the alpine and at treeline.
Persistent weak layers down 50-100cm have been triggered recently by light loads, such as skiers or sluffing off of cliffs. These layers have been remotely triggered, and have the tendency to propagate widely.
40-55cm of recent storm snow is settling into a slab and is bonding poorly where it overlies a crust. The associated winds with the storm were steady creating soft slabs in exposed areas. If triggered, the storm slab may step down to deeper layers.
Warm temperatures will be helping bond soft slabs and windslabs in lee features in the alpine and at treeline in shaded lee features.
Wind slabs up to 35cm can be found in the immediate lee features. Although there has been some improvement, they are sensitive to human triggering on features such as ridge crests, cross loaded gullies, and steep terrain features.
Recent storm snow is settling into a slab and is bonding poorly where it overlies a crust. SW winds are increasing and are creating pockets of windslab at ridgetop. As freezing levels rise the slab may become more reactive.
Quite variable but generally well bonded soft slabs and windslabs in lee features in the alpine and at treeline. Not likely to see much in natural activity but may be possible to trigger underfoot.
There is generally 10-20 cm available for transport and moderate to strong SW wind continues to build windslabs.&nbsp; They are sensitive to human triggering on features such as ridge crests, cross loaded gullies, and steep terrain features.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may become more sensitive with the added snow load from wind and new snow, especially in thin areas.
Windslabs continue to develop today and are still sensitive to human triggering on lee features at treeline and above. Cornices will also be a concern with the new snow and wind.
Persistent weak layers down 50-100cm have been triggered recently by light loads such as skiers and sluffing from steep terrain.  These layers have been remotely triggered and are prone to propagate widely.
The building load of storm snow is settling into a surface slab and is bonding poorly where it overlies a crust.  S through SW winds are creating pockets of fresh windslab at ridge top. Rising temps will increase reactivity of the storm slab.
Warm temps and rain are weakening the snow we received over the last week. Although these may start as snowballs from trees and cliffs they can accumulate a lot of mass. If the sun comes out expect activity to spike on solar aspects.
The new snow over the last week is now becoming rain soaked and moist. As the surface layers become weak, rain or sunshine could trigger wet slabs, especially on steeper slopes.
These layers from early season are still a concern on N aspects in the alpine. The warm temperatures and sunshine could wake up these layers, especially in shallow snowpack areas. Smaller surface avalanches could also step down to these deeper layers
There is generally 10-20 cm available for transport and moderate to strong SW wind continues to build windslabs. They are sensitive to human triggering on features such as ridge crests, cross loaded gullies, and steep lee terrain features.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. This layer has been dormant lately but may become more sensitive with the rising temperatures.
Layers down 50-100cm have been triggered recently by light loads such as skiers and sluffing from steep terrain. Remote triggering and wide propagations are possible. Cornice failures from warm daytime temperatures could trigger these layers.
Warm overnight temperatures prevented a re-freeze of moist surface snow. Freezing levels will climb to 2900m in Rogers Pass with an alpine high of 5 C. Warm temperatures will quickly weaken the snowpack making loose snow avalanches very likely.
Rising freezing levels on Friday has the potential to create a loose wet avalanche problem on solar aspects
Fresh wind slabs are likely on lee aspects in the alpine.  Older slabs are likely on northerly aspects at treeline.
Layers down 40-100cm have been triggered naturally and by light loads such as skiers and sluffing from steep terrain. Remote triggering and wide propagations are possible. Cornice failures from warm daytime temperatures could trigger these layers.
There is generally 10-20 cm available for transport and moderate to strong SW wind continues to build windslabs. With a good freeze Sunday these will become less sensitive, but will be found in immediate lees or ridge crests.
The lower half of the snowpack is weak due to the presence of basal facets and depth hoar. Loose wet avalanches could initiate these deeper layers.
Wind slabs that have formed from recent snow are generally bonding well to the surfaces below. These will be sensitive in the short term in the immediate lees of ridge crests.
Fresh wind slabs are likely on lee aspects and cross loaded features in high alpine locations.
Recent and forecast precipitation could be enough to overload instabilities within our snowpack. A number of weak layers reside in the top 1.5m and were triggered by people in the backcountry last week.
~30cm of recent snow in the Alpine over lying a number of crusts which were reactive to riders throughout the area. Tread cautiously in the upper elevations where recent precipitation fell as snow.
There is generally 10-20 cm available for transport and moderate to strong SW wind continues to build wind slabs. With a good freeze Sunday these will become less sensitive, but will be found in immediate lees or ridge crests.
Recent and forecast precipitation should be enough to overload instabilities within our snowpack. A number of weak layers reside in the top 1.5m and were triggerable by people in the back country last week even without this new load.
Up to 40cm of recent snow in the Alpine over lying a number of crusts and wet layers which were reactive to riders throughout the area. Tread cautiously in the upper elevations where recent precipitation fell as snow.
Although thin in many areas, there are some significant slabs that have grown along the ridge crests. New snow and continued West winds will continue to build these. Do not get caught by these while pushing to ski dry snow.
Strong winds have built large cornices on ridgetops that could fail with the warm temperatures and sun exposure. Recent failures have triggered significant alpine slabs that ran to below treeline elevations.
There is generally 10-20 cm available for transport and moderate to strong SW wind continues to build wind slabs.
Moderate to strong SW winds have created wind slabs in the alpine that are reactive to skier triggering.
Continued warm precipitation has been enough to begin to overload the various persistent instabilities in our snowpack. A series of weak layers in the top 1.5m of snowpack should be considered triggerable by back country riders.
Storm slabs should be expected at tree line elevations and above in the immediate lee of ridge lines and crossloaded features. These slabs are lying over a number of crust and weak layer sandwiches that were previously reactive to skier triggering.
Windslabs can be found on lee aspects and cross loaded features at treeline and above.
Large cornices or surface avalanches are the likely trigger for this deep persistent weak layer.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">There is generally 10-20 cm available for transport and moderate SW winds have created wind slabs in exposed locations. These will be most reactive where they </span><span class="s_2823317B">overlie </span><span class="s_AA239A9B">a sun crust (solar aspects).
Some lingering wind slabs still exist in the alpine. Pay attention to lee slopes as you transition into the alpine.
20cm of new snow has added to the growing storm slabs at higher elevations. Strong SW'ly winds have magnified loading creating deeper, and touchier, pockets in lee areas. The storm slabs may be more reactive where they bond poorly to crusts below.
A series of weak layers in the top 1.5m of the snowpack are more easily triggered due to the load added by the new snow and rain over the past week. They may be triggered by the added load of a person, another avalanche or a cornice falling.
Windslabs have formed below ridgecrests, often on old crusts. New soft cornice buildup continues.
Windslabs can be found on lee aspects and cross loaded features at treeline and above.&nbsp;
Moderate, but gusty, winds have been shifting from the SW to the NW forming pockets of wind slab in the alpine. Due to the variable wind direction they may exist in unusual places.
Up to 60cm of new snow exists at higher elevations. This new storm snow will get it's first &quot;kiss from the sun&quot; today, which often triggers avalanches. The storm slabs may be more reactive where they bond poorly to crusts below.
Wind slabs have formed below ridge crests, often on old crusts.&nbsp; New soft cornice buildup continues.
Soft slabs up to 30cm deep have formed over the crusts with the recent snow. Although thin in many areas, there are some significant slabs that have grown along the ridge crests.
Small amounts of snow above the crusts will fail easily with solar heating.
The recent growth that has developed on the cornices is quite fragile. With heating or continued wind this new growth may fail and would likely trigger windslabs on the loaded slopes below.
Moderate winds have been shifting from the SW to the NW forming pockets of wind slab on lee alpine features. Due to the variable wind direction they may exist in unusual places.
Up to 60cm of new snow exists at higher elevations. Tests show poorly bonded storm snow where buried crusts are present. Hazard will increase when the new storm snow gets a rapid warm up this morning, especially if forecasted clouds don't arrive.
Recent wind slabs will become buried with Saturday/Sunday's up-slope storm.
Later in the afternoon as the snow begins to accumulate and load up on southerly aspects in particular, this might produce significant skier triggerable loose snow avalanches.
20 cm of snow possible with strong East winds will create a reverse loading condition in the Alpine.
30-40cm of rapidly settling storm snow sits over a weak wet layer below 2300m. Stability tests indicate that this layer is triggerable by light loads. At higher elevations moderate winds have created pockets of wind slab and fragile cornices.
Up to 20+cm accumulated overnight into Sunday will bring sluffing in steep terrain, especially if the sun pokes through.&nbsp; It will also sluff easily on any harder crust layers. The amount of sluffing will depend highly on any associated wind.
Recent wind slabs will become buried with the forecasted up-slope storm. Monitor how these are bonding to harder surfaces below.
Pockets of wind pressed snow and  windslabs can be found on lee aspects and cross loaded features at treeline and above.
New snow will sluff easily on any crust or hard wind pressed surface it is lying over.&nbsp; If winds are stronger than forecast this will augment this problem.
Multiple weak layers in the top 1.0 m of the snowpack. These layers may become more reactive as the snowpack warms with daytime heat and weakens them. Large triggers like cornice falls may also do the trick.
Snow accumulations varied greatly during the past two storms, more was received on the west end of the Park. Reactive slabs may linger in the alpine. Be aware as the snow transitions from crust to soft snow under your boards.
Strong solar radiation is forecast for today. Once the overnight crust breaks down expect more avalanche activity on solar aspects.
Pockets of wind pressed snow and windslabs can be found on lee aspects and cross loaded features at treeline and above.
Low density snow with little slab characteristics blankets the old interfaces and temps remain cool. The solar input on Tuesday and Wednesday could change the problem from loose dry to loose wet or wet slabs on solar aspects very quickly.
Recent wind slabs are now buried with the forecasted up-slope storm. Monitor how these are bonding to harder surfaces below.
New snow will sluff easily on any crust or hard wind pressed surface it is lying over. If winds are stronger than forecast this will augment this problem.
Slabs up to 50cm deep have formed over the crusts with the recent snow. These soft slabs have formed with winds from unusual directions and are likely to be found along ridge crests and in cross loaded features within a slope.
The new snow is likely to fail easily in very steep terrain naturally however travelers will experience sluffing in steep terrain as they travel through. Manage your group carefully to prevent being caught by these sluffs especially above cliffs.
As the sun comes out on Tuesday expect moist snow to develop and fail naturally first on solar slopes and then on lower elevation shaded slopes. This should be more serious on Thursday with clear skies and a higher freezing level expected.
Cornice falls were observed on steep unskiable terrain on Northerly aspects. Avoid this overhead hazard while travelling since the warmer temperatures may increase the number of cornice failures.
The effects of solar radiation will increase the hazard on steep solar aspects during the course of the day. Travel early in the day while the hazard is Low on any exposed solar aspects and watch for increased avalanche hazard as temperatures rise.
We are expecting more solar radiation today and higher freezing levels. These conditions will weaken the large cornices that loom on ridgetops.
Moistening snow and signs of loose avalanches pouring off cliffs are indications that the upper snowpack is weakening, this is when you want to minimize your groups exposure on slopes in the sun.
Multiple weak layers in the top 1.0 m of the snowpack. These layers may become more reactive as the snowpack warms with daytime heat and weakens them. Large triggers like cornice falls may also cause avalanches to fail on these layers.
Cornice failures 24hours or older were observed on steep unskiable terrain on Northerly aspects. Avoid this overhead hazard while traveling since the warmer temperatures may increase the number of cornice failures.
Warm afternoon temps and lots of solar will weaken the large cornices that exist in many areas. Recently, cornice failures have been the primary trigger of slab avalanches.
Moistening snow and signs of loose avalanches pouring off cliffs are indications that the upper snowpack is weakening. When the surface is warming up it's time to minimize your exposure to slopes in the sun.
Weak layers in the top meter of the snowpack may become more reactive as the snowpack warms with daytime heat. Large triggers like cornice falls may also cause avalanches to fail on these layers.
East, south and west facing slopes will all become effected by strong solar radiation, resulting in morning crust and wet snow in the afternoon. Watch for wet avalanches in gullies and other steep terrain feature starting mid-day.
Solar radiation on steep solar aspects is increasing the hazard during the course of the day. A surface condition at this point but can build enough mass to bury a person or increase the consequences with terrain traps. Travel early on solar aspects.
Warm afternoon temps and lots of solar are causing cornice failures, which is the primary trigger of recent slab avalanches. Even if they don't trigger an avalanche, a car sized block of cornice hurtling downslope is worth avoiding.
Moistening snow and signs of loose avalanches pouring off cliffs are indications that the upper snowpack is weakening. Probing with your pole can help to assess if the crusts are breaking down; if they are it's time to move into the shade.
Weak layers in the top meter of the snowpack may become more reactive as the snowpack warms with daytime heat. Cornice falls are the most likely triggers of large deep avalanches failing on these layers.
Cornice failures have been noted on steep unskiable terrain. Avoid this overhead hazard while traveling as warm spring temperatures may increase this potential.
Solar radiation on steep solar aspects is increasing the hazard during the course of the day. creating surface conditions that could build enough mass to bury a person or increase the consequences with terrain traps. Travel early on solar aspects.
Widespread slabs up to 50cm deep formed over a crust early this week are likely to be found along ridge crests and in cross loaded features within a slope. Watch for these on the hunt for dry high elevation north facing snow.
As the freezing levels remain high overnight Thursday and into Friday with the potential for some solar heating watch for continued activity as surface crusts break down. The recent snow has proven to be quite reactive over the buried crust.
The recent growth that has developed on the cornices is quite fragile. Several failures have occurred during this week, some pulling windslabs and others triggering loose activity at lower elevations to run a significant distance overall.
East, south and west facing slopes have all been affected by strong solar radiation. This will result in morning crusts, and wet snow in the afternoon. Watch for wet avalanches in gullies and other steep terrain feature starting mid-day.
Temperatures may be cooling but cornices are still the main problem in Rogers Pass. Recent cornice failures have triggered persistent instabilities buried deep in the snowpack. The resulting avalanches are large with serious destructive potential.
Small wind slabs will form over the next 24 hours in the lees of ridge crests. These will be reactive in the short term.
Many reports over the last week of cornice failures. These may have enough load to trigger an avalanche, or have enough mass to be a hazard on their own.
Cornice failures have been noted on steep unskiable terrain particularly on warm days. Avoid this overhead hazard while traveling as they are large and ominous.
20cm of moist snow fell at treeline with consistent SW winds. The storm slab sits atop a crust on solar aspects and surface hoar on sheltered N aspects. Strong winds will continue to develop the slab properties of this layer and increase hazard.
The new snow that has fallen on the recent temperature crust has the propensity to power slough on steep slopes in alpine and treeline locations.
Soft slabs are forming on lee slopes and cross loaded features in the high alpine.
Wind slabs have formed in lee areas above treeline up to 40cm thick. These are reactive to skier traffic and have been failing naturally in some locations. Expect sluffing in any steep terrain as well.
There have been many reports of cornice chunks falling off of ridge crests which may be big enough a load to trigger an avalanche on the basal facets, or be enough mass to be a hazard themselves.
40cm of recent storm snow sits over surface hoar on northerly aspects. Associated winds with the storms have been enough to create slabs in exposed areas. Its time to select more conservative terrain.
Strong wind from the NW has created wind slabs on lee aspects up to 50cm thick. These are reactive to skier traffic and have been failing naturally in some locations. Expect sluffing in any steep terrain as well.
Wind slabs have formed in lee areas above treeline up to 50cm thick. These are reactive to skier traffic and have been failing naturally in some locations. Expect sluffing in any steep terrain as well.
Wind slabs have formed on lee slopes and cross loaded features at alpine and exposed tree line elevations.
A weak layer down 65 cm was producing easy sudden shears yesterday, failing on 4F snow between a crust and a more dense layer.  Whumphing and cracking was observed and was suspected to be caused by failure at this layer. 
Strong winds have redistributed the recent 20-30 cm of snow that has fallen. Pockets of soft snow exist, but heads up for fresh windslabs in high alpine areas and near ridgecrests. Give the couloirs a day or two to settle and sluff.
Cornice are large and ominous. Give them a wide berth whenever possible. Current winds will continue to build their mass.
New snow Tuesday will add to slabs that can be found in the highest north facing terrain.
Cornices are large and are susceptible to the powerful solar heating at this time of year. A falling cornice can create a large avalanche on the slope it hits giving them surprising reach in their destructive potential.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_1681A555">The sun may come out later today. With all the new snow we've had, it won't take much to kick off some loose avalanches on solar aspects.</span><span class="s_AA239
Cornice are large and ominous. Give them a wide berth whenever possible.
Strong winds have redistributed the recent 30-40 cm of snow that has fallen. Heads up for fresh windslabs in high alpine areas and near ridgecrests. Assess the bond of the new snow on low consequence slopes before committing to bigger terrain.
40cm of recent snow has settled into a slab sitting on surface hoar on N'ly aspects and a sun crust on S aspects. Strong winds at ridgetop have created deeper pockets and loaded lee slopes. Today's strong sun will likely make it more reactive.
1681A555">The new snow will get a strong dose of sun today and loose avalanches are expected. Once moving, avalanches may dig down into wet snow deeper in the snowpack resulting in large wet avalanches.
New snow and strong winds at ridgetop have caused the existing cornices to grow even larger. Today they will be weakened by strong solar. Large cornice failures have been observed recently, sometimes triggering very large deep slab avalanches.
Natural cornice failures are being observed daily. Many more are waiting their turn to drop in...
Windslabs exist in many open areas at treeline and above, and expect to see these avalanche during the warm afternoons as the sun effects the snow surface. Watch out for all windloaded rolls.
Another large cornice fall was observed on Wednesday, triggering a size 3 deep slab. The deep facets at the base of the snowpack appear to be waking up with large triggers.
Distribution of winds slabs has been spotty but has been found on southerly aspects. Use caution when transitioning into exposed terrain at tree line and in the alpine.
Previous winds had formed wind slabs on isolated terrain like contained gulley features in upper elevations at TL and above. They are proving to be fairly stubborn with little if any propagation.
If we get significant amounts of snow today, along with winds, the new slabs will be particularly touchy, given that they will be sitting on a house of cards (surface hoar and crusts).
Up to 20 cm of snow expected through the night and Friday with mod SW winds will build storm slabs on top of a well developed surface hoar layer. Sheltered northerly aspects are likely areas where this surface hoar is most prevalent.
25cm of heavy new storm snow has combined with strong SW winds to form a slab over a touchy, widespread surface hoar layer. This slab is easily triggered by riders and has the potential to propagate into larger than expected avalanches.
Up to 20 cm of snow expected through the weekend with mod SW winds will build storm slabs on top of a well developed surface hoar layer. Sheltered northerly aspects are likely areas where this surface hoar is most prevalent.
Small wind slabs will be forming in immediate lees. Places like the Bow Summit/Wapta region may have thicker wind slabs as they received more snow than other areas of the forecast region.
Watch lee features near ridge crests as small wind slabs have been forming from warm temperatures, wind and recent snow.
Strong southerly winds are transporting storm snow and forming wind slabs in exposed areas. When triggered, cohesive wind slabs have the potential for wide propagation where they overlay the Dec 2nd surface hoar.
25 cm of snow so far with a total of 40 cm expected by Tuesday night.  Mod to strong SW winds building slabs on top of a well developed surface hoar layer. Sheltered northerly aspects are likely areas where this surface hoar is most prevalent.
35cm of storm snow in past 48hrs along with warm temps and strong SW winds have formed storm slabs over a widespread weak surface hoar &amp; facet layer. If triggered there is potential for large slab propagation.
Expect windslabs on northerly aspects due to the multi hour strong south wind transport. If triggered these slabs have potential for wide propagation on the Dec 2nd SH layer.
Small wind slabs are forming in the immediate lee of prominent features and ridgelines. Areas further to the north have seen, and expected to see, larger snow inputs so greater slab development can be expected in those regions.
Weather models indicating 40mm over the next 48 hours. This significant load will be accompanied by SW winds, leading to new slab formation on lee aspects. The Dec3 layer will be down 60cm if this snow arrives, and will warrant careful investigation.
Currently there are only wind slabs in pockets, but this problem will likely increase in potential size with more snow.
Storm slabs are expected to develop with Tuesdays storm.
The Dec 2nd surface hoar layer is reaching critical overloading by the storm slab. Expect the storm slab to be reactive to both human and natural triggering.
Windloading has formed windslabs on alpine and treeline northerly aspects.  In some locations these slabs will be resting on the Dec 2nd surface hoar layer and will be sensitive to human triggering.
Weather models indicating 40mm over the next 36 hours. This significant load will be accompanied by SW winds, leading to new slab formation on lee aspects. The Dec3 layer will be down 60cm if this snow arrives, and will warrant careful investigation.
The recent storm snow has been blown around by gusty winds, primarily from the SW. Cross loaded gully features in the alpine should be avoided during the next few days.
15-40 cms of storm snow in the alpine and at treeline is being blown by moderate to strong S/ SW winds and forming windslabs in immediate lees of prominent features and ridgelines.
30 -50 cms of storm snow in the alpine and at treeline is being blown by moderate to strong S/ SW winds and forming windslabs in immediate lees of prominent features and ridgelines.
The Dec 2nd surface hoar layer has reached critical load. Expect the storm slab to be reactive to both human and natural triggering.
Strong S winds formed wind slabs on N aspects in the alpine and tree-line. In some locations these slabs will be resting on the Dec 2nd surface hoar layer and will be sensitive to human triggering.
30 cm since Dec 5th and another 10-25 cm tonight accompanied by SW winds leading to storm slab formation. The Dec3  surface hoar layer will be down 60cm if this snow arrives. It warrants careful investigation.
The Dec 2nd surface hoar / crust layer has reached critical load. Expect the storm slab to be reactive to both human and natural triggering.
There is plenty of loose, unconsolidated snow available to sluff around you. Be aware that it can easily accumulate to a critical load and trigger underlying slabs, especially the Dec 2 surface hoar / crust layer.
Recent snowfall has been a great addition to the snowpack, and should help set the stage for the winter. The bonding of this new snow at the Dec 3 interface down 60cm is the condition to monitor right now.
Recent storm snow plastered to steep rocky terrain will want to shed, particularly on solar aspects below 1500m.
Strong wind today and new snow has started to create new wind slabs in lee areas in the alpine. These wind-slabs are expected to be touchy.
30-70 cms of storm snow in the alpine and at treeline was blown by moderate to strong S-SW-SE winds in immediate lees of prominent features and ridgelines.
A 50-100cm thick slab overlies touchy surface hoar below treeline, and sun crust in the alpine. The surface hoar layer become more reactive at lower elevations. Expect the storm slab to be easy to trigger and capable of resulting in large avalanches.
With ~1m of new snow available for transport, strong S winds have formed wind slabs on N aspects in the alpine and tree-line. These pockets of windslab have been reported to be reactive to triggering.
Above ~1800m temps remained cool and in areas sheltered from the wind there will be lots of loose snow available to sluff. Be aware that it can easily accumulate and trigger underlying slabs, especially the Dec 2 surface hoar / crust layer.
A touchy 15cm windslab can be found in lee areas at treeline and into the alpine. Several natural avalanches started with this slab and then stepped down to full depth releases in the alpine.
The recent storm was accompanied by moderate to strong winds at treeline and above. For a few more days, watch out for fresh windslabs in typically suspicious areas after a storm: leeward and cross loaded slopes or slopes near ridge crests.
A 50-100cm thick slab overlies touchy surface hoar below treeline, and sun crust in the alpine. The surface hoar layer becomes more reactive at lower elevations, and where it exists the storm slab will be easy to trigger.
The recent storm was accompanied by moderate to strong winds at tree line and above. Things are improving but watch out for wind slabs in typically suspicious areas after a storm: leeward and cross loaded slopes or slopes near ridge crests.
A 70-90cm slab sits on a suncrust on steep solar aspects and preserved surface hoar at and below treeline. This slab is well formed in areas influenced by strong winds. This layer is becoming less reactive in tests, but remains triggerable by skiers.
A touchy 15cm windslab can be found in lee areas at treeline and into the alpine. Several natural avalanches started with this slab and then stepped down to full depth releases in the alpine following last weeks storm.
With increasing winds Saturday night, continue to watch for wind slabs in typically suspicious areas: leeward and cross loaded slopes or slopes near ridge crests.
80-100cm of storm slab sits on top of the Dec 2 persistent weak layer. This layer is in the form of surface hoar at and below treeline and suncrust on solar aspects in the alpine. The layer is producing hard results on field tests yesterday at 2100m.
80-100cm of  settling snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below treeline and suncrust on solar aspects treeline to alpine. The layer is producing moderate-hard results on field tests yesterday at 2000m.
Early December crusts may also act as weak layers.
A 10 to 15cm windslab can be found in lee areas at treeline and into the alpine. Several natural avalanches started with this slab and then stepped down to full depth releases in the alpine following last weeks storm.
Small windslabs formed with the last storm and are slowly settling out. These were reactive with explosive triggers in the Sunshine area on Monday,
80-100cm of settling snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below tree line and sun crust on solar aspects tree line to alpine. The layer has produced moderate-hard results in field tests.
A thin windslab can be found in lee areas at treeline and into the alpine. Several natural avalanches started with this slab and then stepped down to full depth releases in the alpine following last weeks storm.
80-100cm of settled snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below tree line and sun crust on solar aspects tree line to alpine. The layer has produced moderate-hard results in field tests.
Watch for sloughs running fast and far where previous crusts are near the surface.
Previous storm slabs have not been reactive for several days.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Watch for fresh storm slab development when the wind increases.
Varying depths of settled snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below tree line and sun crust on solar aspects tree line to alpine. The layer has produced moderate-hard results in field tests.
New (and previously) building windslab will be found in lee areas at treeline and into the alpine.
Watch for a developing wind slab in exposed areas as strong westerly winds transport recently fallen snow. Significant loading from wind transport can be expected in lee areas and may be easily triggered by riders.
80cm of snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below treeline and sun crust on solar aspects. Although this layer is becoming less reactive, it is still producing sudden results in stability tests.
New snow and light wind transport have created storm slabs. These may entrain loose snow in their track and grow in size.
Watch for a developing wind slab in exposed areas as moderate south westerly winds transport recently fallen snow. Significant loading from wind transport can be expected in lee areas and may be easily triggered by riders.
80cm of snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below treeline and sun crust on solar aspects. Although this layer is becoming less reactive, it may awaken with ongoing incremental snow loading.
Steady Southwest winds and light precipitation expected to build new soft slabs in the alpine and exposed areas at treeline.
New isolated slabs are forming in alpine terrain
Moderate S-SW winds are forecast by mid morning this morning. Expect freshly formed windslab on alpine lee features and treeline ridges as moderate winds transport low density storm snow.
80cm+ of settled snow sits on top of the Dec 2nd interface.  This interface consists of surface hoar at and below treeline and suncrust on steeper solar aspects in the alpine.
New isolated slabs soft slabs are steadily growing in alpine terrain. These fresh slabs are easily triggered by skiers and will be found in the immediate lee sides of prominent features. Fragile recent cornice growth has also been failing naturally.
These may be hidden under light new snow by Tuesday.
4-5 hours of low end of moderate southerly winds are expected to have formed soft slabs in the immediate lee of alpine and treeline ridges and cross winded features.
80cm+ settled snow sits on top of the Dec 2nd interface. This layer consists of decomposing surface hoar at and below treeline and suncrusts on steep solar aspects in the alpine.
Loose dry sloughing of storm snow can be expected in very steep terrain. This is more of a concern in steep confined gully features.
Isolated slabs soft slabs are present in immediate lee areas in the alpine. Fragile cornices have also been reported.
Periods of moderate winds from various directions have redistributed the snow around in the alpine producing surface roughness and soft slab
80cm+ settled snow sits on top of the Dec 2nd interface. This layer consists of decomposing surface hoar at and below tree line and sun crusts on steep solar aspects in the alpine.
Wind slabs can be expected to be most developed in the alpine on cross winded and NE facing terrain.
Isolated slabs soft slabs are present in immediate lee areas in the alpine.
These are now hidden under the low density new snow.
Recent winds have been shifting from the S to the N, creating pockets of soft windslab in lee features. Be especially cautious in steep terrain where the consequences of a fall caused by a small pocket of windslab would be serious.
With 45cm of low density snow expect sluffing in steep terrain. Be aware of where other people are, regroup in safe spots, and avoid exposure to terrain traps.
The existing Wind Slabs are variable in size and distribution. </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Watch for new wind slab development if forecast periods of Moderate Westerly winds eventuate.
A large natural slab avalanche was observed today, that may have released at a buried crust from early December. For now, it is unclear if this will remain an isolated event, or if this layer is becoming more sensitive to loads.
Recent winds have been shifting directions. Pockets of windslab may be lurking in unusual places. Be especially cautious in steep terrain where the consequences of a fall caused by a small pocket of windslab would be serious.
With 50cm of low density snow expect sluffing in steep terrain. Be aware of where other people are, regroup in safe spots, and avoid exposure to terrain traps.
Wind speed and direction have been variable. Pockets of soft slab may be found in unexpected locations. Edge into higher consequence steep terrain with caution.
Expect loose snow sluffing in steep to extreme terrain. Plan to regroup in safe locations and avoid exposure to terrain traps.
Some thin, isolated winds slabs are beginning to form in leeward areas near ridge crests as the winds increase. Keep an eye out for these spots when entering steep terrain.&nbsp;
Some thin, isolated winds slabs are beginning to form in leeward areas near ridge crests as the winds increase. Keep an eye out for these spots when entering steep terrain.
Winds picked up yesterday out of the south redistributing the low density storm snow onto alpine immediate lee features. Be cautious as you transition into wind effected terrain and assess before committing to it.
With 50cm of recent storm snow expect sluffing in steep to extreme terrain.  Avoid terrain trap features and be aware where people are above and below you.
Wind slabs can be expected to be most developed in the alpine on cross loaded and NE facing terrain.
The facetting process is weakening the mid-pack from the top down and bottom up. This situation would make it possible to trigger the weakness at the base of the snowpack as the support underfoot shrinks. Watch for this in shallower areas.
Isolated windslabs can be found in alpine terrain as a result of recent West and Southwest winds.
Watch for new wind slab development with ongoing Moderate to Strong Westerly winds.  </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Fresh windslabs may become buried with light snowfall later in the forecast period.
Wind effect will make this problem less widespread, however sluffing will remain a concern in steep sheltered terrain
A large natural slab avalanche was observed last wednesday, this may have released at a buried crust from early December. For now, it is unclear if this will remain an isolated event, or if this layer is becoming more sensitive to loads.
Periods of moderate south through south-west winds have formed soft slabs along the immediate lee of alpine features.
Loose dry snow sluffs can be expected in very steep terrain. This could be an issue in steep gullies and terrain traps.
Wind slabs can be expected to be most developed in the alpine with some redistribution and reverse-loading to happen as the winds shift 180 degrees.
Isolated wind slabs can be found in alpine terrain as a result of recent West and Southwest winds.
Periods of moderate south through south-west winds have formed soft to very soft slabs along the immediate lee of alpine features.
Isolated windslabs can be found in alpine terrain as a result of recent West and Southwest winds. These have not been too reactive but may be enough to push someone off their feet in steep, exposed terrain.
Wind slabs can be expected to be most developed in the alpine and open tree-line ridge tops.
Isolated wind slabs can be found in alpine terrain as a result of recent West and Southwest winds. Although they have not been very reactive, heads up in steep and exposed terrain, as a small cookie could be enough to knock you off your feet.
Recently formed windslabs are now being buried by light snowfall
Small sluffs may trigger previous windslabs
Winds have been relatively light, but periods of moderate S through N winds have created pockets of very soft slab along the immediate lee of alpine features. Where they exist, these pockets have been triggered by skiers.
All that loose, dry snow means great skiing, but expect it to sluff in steep terrain. This could be an issue in steep gullies and terrain traps, where your sluff can accumulate and become deeper.
Isolated windslabs exist at treeline and in alpine areas. It's hard to pin down exactly where these are, but we have seen two small avalanches in the past 48-hours. Be aware of these, and watch the surface snow closely in exposed areas.
The sun sure feels good but it also packs a punch into the snowpack. Expect solar triggered avalanches from steep solar aspects, especially if there are exposed rocks and cliffs baking in the sun. Expect sluffing from steep slopes on your descent.
Thin windslabs exist in immediate lee of some alpine features. Keep them in mind if you venture into more aggressive terrain where getting pushed around by a small slide could have serious consequences.
Small sluffs may trigger previous windslabs.
Previously formed windslabs are now difficult to detect as they were buried by the recent new snow.
Isolated windslabs exist at treeline and in alpine areas. It's hard to pin down exactly where these are, but several natural and skier triggered avalanches (up to size 1.5) have been reported in the past 48-hours.
With Alpine temps forecasted to reach zero today, the sun will have a greater effect on the snowpack. Expect solar triggered avalanches from steep solar aspects, especially around rocks and cliffs. Expect sluffing from steep slopes on your descent.
Solar triggered sluffs entraining loose snow in steep solar facing gulleys.
Isolated windslabs exist at treeline and in alpine areas. It's hard to pin down exactly where these are, but several natural and skier triggered avalanches (up to size 1.5) have been reported in the past week.
Ice climbers and skiers be mindful of loose snow avalanches to size 2 in steep solar terrain. Several avalanches have been observed with warming temperatures and sun affect.
Ice climbers and skiers be mindful of loose snow avalanches to size 2 in steep cliffs/gullied terrain. The sun is triggering moist snow sluffs that entrain the dry facets or moist surface snow in its path.
Watch for warm temperatures and clear skies on Saturday to destabilize the surface snow on sunny slopes.
Small surface wind slabs are still visible in isolated locations, while older large wind slabs are buried under a skiff of recent snow.
A buried surface hoar layer has produced sudden results in snowpack tests at treeline. This layer is now a concern due to rapid warming of the snowpack and strong solar radiation.
Warm temperatures above 1900m and strong solar input have created touchy conditions in isolated terrain. Expect solar triggered avalanches from steep solar aspects, especially around rocks and cliffs. Expect sluffing from steep slopes as you descend.
Thin windslabs exist in the immediate lee of some alpine features. Keep them in mind if you venture into more aggressive terrain where getting pushed around by a small slide could have serious consequences.
The sun is triggering moist snow sluffs that entrain the dry facets or moist surface snow below. Ice climbers and skiers should expect loose wet snow avalanches to size 2 out of steep rocky South facing terrain.