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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Be aware of a potential weak interface found at the base of the snowpack above 1900m in as this early Nov crust breaks down.
Jan 5 Surface Hoar/ Suncrust layer is now buried 60 to 90 cm. Extra caution on sheltered North and East aspects. Dig down to identify this layer and avoid  steep or unsupported slopes where it is present. Triggering this layer would be serious.
Jan 5 interface in sheltered locations where preserved surface hoar can be found down 50 to 90 cm. Dig down often to identify this layer and avoid steep or unsupported slopes where surface hoar is present. Triggering this layer would be serious.
Associated with mid pack crusts we see a layer of sugary crystals underlying stiffer upper layers. Use more caution in thin areas as triggering&nbsp; may be more likely.
The crusts near the bottom of the snowpack have been weakening, especially on cooler North aspects.
Weak snow associated with crusts formed in Mid and early November can be found down about 70cm. This seems to be less significant on Southerly aspects. Triggering planar slopes from thin areas remains a possibility to consider.
Weak snow associated with crusts formed in Mid and early November can be found down about 70cm. This seems to be less significant on Southerly aspects. Triggering planar slopes from thin areas remains a possibility to consider.
This layer of weak sugary snow is found in many areas&nbsp; about 30 to 40cm from the ground. Triggering&nbsp; of this&nbsp; layer is more of a concern in shallower snowpack areas.
Weak faceted or sugary snow can be found almost everywhere 30 to 40 cm above the ground. Triggering in thin snowpack areas remains a concern. Some natural avalanche activity should be expected if snowfall amounts are significant Friday.
These recently formed slabs have proven to be very easy to trigger failing naturally and with light loads. Limit your exposure to significant slopes. Do not get taken by surprise by the long propagations or remote triggering that has been seen.
&nbsp; These slabs have become a little less touchy but are now buried by an additional load (60cm over the past week). Limit your exposure to significant slopes. Do not get taken by surprise. Long propagations are still likely.
Now 80 to 130 cm thick, these slabs threaten serious consequence. While the potential for triggering has dropped, do not get taken by surprise: long propagations and remote triggering may still be possible. Limit your exposure to significant slopes.
These slabs became less sensitive with cold temperatures and increasing depth. Now as conditions change with rapid loading and warming, limit your exposure to significant slopes. Do not get taken by surprise. Long propagations may still be possible.
These slabs became less sensitive with the increasing snowpack depth. As temperatures warm to ridgetop for Sun limit your exposure to significant slopes. Do not get taken by surprise. Long propagations may still be possible.
The weak February facet layer is now buried up to 170cm deep. Large loads such as cornices have triggered this layer where it is deep and it has failed with sluffing and heating where it is shallow. Long propagations are possible with this layer.
The weak facet layer is now buried by up to 170cm in treeline and alpine areas and below treeline is found down 50cm. Many avalanches fell over the weekend on this layer and it is a concern that may persist for some time. Triggering is possible!
The layer down 70-170 cm is still active as demonstrated Thur with avalanche control work up Akamina. Any slope not yet slid should be a concern. Windslabs, cornices, storm slabs or wet loose avalanches could step down and result in large avalanches.
70 to 110cm of snow is now settling above the early March Crusts. Variable shears persist in these slabs and they are well worth bearing in mind particularly as heating becomes more of a factor in the days and weeks to come.
Although unlikely, a large load such as a cornice failure or another avalanche could trigger all of the snow above these strong crusts. Significant and sustained heating or rain may also allow these slabs to become active such as is forecast Monday.
With significant heating in the forecast for Monday and Tuesday deep slabs may become active. Large loads such as falling cornices or smaller avalanches could trigger large avalanches on the March crusts or even the February facets.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_E6FD2046">With significant heating in the forecast for Tuesday deep slabs may become active. Large loads such as falling cornices or smaller avalanches could trigger large avalanches on the March crusts or even the February facets.
These slabs taper radically with elevation. Large slides resulted from failures in the recent storm snow over the crust that extends into the alpine.
These slabs taper radically with elevation and are sitting on a thick crust. Large slides resulted from failures in the recent storm snow over the crust that extends to around 2300m. These slabs may become easier to trigger with the expected heating.
Above 2000m the crust above the weak November Facets is variable. Triggering may remain a possibility for some time. Use caution Treeline and above especially in thin areas.
The weak snow above the crust is now primed with a big enough slab for there to be serious consequences. In the alpine this problem will likely be limited to N and E aspects but at treeline it is widespread. Use extra care in open, sheltered terrain.
The weak snow above the crust is now primed with a big enough slab for there to be serious consequences. In the alpine this problem will likely be limited to N and E aspects but at treeline it is widespread. Use extra care in open, sheltered terrain.
Facets and isolated surface hoar above the Dec 13 crust remain the feature to watch in the snowpack. New load from storms or wind transport will make this more sensitive to triggering especially when combined with warm temperatures Wednesday.
Continue to watch for this layer which has proven to be extremely variable. Areas where these slabs are thin may should raise added caution.
Continue to watch for this layer which has proven to be extremely variable. Areas where these slabs are thin should raise added concern.
Continue to watch for this layer which has proven to be extremely variable. Be extra vigilant in thin snowpack areas, where the layer is more likely to be triggered by riders/climbers.
Although we have received recent extra snow load on this layer, it is not reacting. It is becoming less and less reactive as time goes by. Be mindful in thin snowpack areas, where the layer is more likely to be triggered by riders/climbers.
Although we have received recent extra snow load on this layer, it is not reacting. It is becoming less and less reactive as time goes by. Be mindful in thin snowpack areas, where the layer is more likely to be triggered by riders/climbers.
We received additional snow load last weekend but have still not seen any evidence of activity on this layer in our area even though neighbouring areas have. Be mindful in thin snowpack areas, where the layer is more likely to be triggered.
Now 40 to 120cm deep these slabs continue to stand out as a real concern. Be particularly mindful in thin snowpack areas where this layer is more likely to be triggered.
Now 40 to 120cm deep these slabs continue to stand out as a real concern in the TL and ALP areas that do not have strong surface crusts. Be particularly mindful in thin snowpack areas where this layer is more likely to be triggered.
Now 40 to 120cm deep these slabs continue to stand out as a real concern in the TL and ALP areas that do not have strong surface crusts. Be particularly mindful in thin snowpack areas where this layer is more likely to be triggered.
Now 40 to 120cm deep these slabs continue to stand out as a real concern in the TL and ALP areas that do not have strong surface crusts. Be particularly mindful in thin snowpack areas where this layer is more likely to be triggered.
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.
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.
Early December crusts may also act as weak layers.
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.
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.
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.
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.
A buried layer of Surface Hoar will be difficult to trigger, but has potential to propagate widely. Follow good travel techniques, such as spacing out, and regrouping only in safe spots.
A buried layer of Surface Hoar will be difficult to trigger, but has potential to propagate widely.
This layer has become difficult to trigger but has the potential to propagate widely.
A weak layer that was buried in early January seems to be gaining strength, but this strength is being put to the test by wind loading, new snow and near-zero temperatures.
A weak layer that was buried in early January was showing signs of strengthening before Fridays' storm, but has not been ruled out as the potential failure plane of several large, recent slab avalanches. Consider avalanche consequence at all times.
A weak layers buried in early January and early December have not been ruled out as the potential failure plane of several large, recent slab avalanches. While the probability of triggering these layers is low, the consequences will be significant.
While mostly stubborn to trigger, buried layers of old windslab over a couple of buried crusts have the potential for wide propagation.&nbsp; Use a probe or a pole to test for the presence of these buried layers.
While mostly unlikely to trigger, buried layers of old windslab over a couple of buried crusts have the potential for wide propagation. Use a probe or a pole to check for the presence of these buried layers.
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.
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.
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.
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.
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.
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.
Avoid thin snowpack areas, use caution with large uniform features, and consider the potential for shallow trigger points.
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.
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.
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.
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.
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.
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.
1681A555">This layer may become active as facets form on the crust and the snow load increases. Smaller avalanches may &quot;step-down&quot; to this layer.
="s_3FE45715">The mid-November crust is typically down 60-120cm. This appears to be a very isolated problem at the moment but could have major consequences if triggered. The biggest concerns are smaller avalanches stepping down or triggering from a thin area.
="s_3FE45715">A weak layer buried mid-December now lies up to 75cm below the surface and has the potential for large avalanches. It's a tricky one to manage as it's not a problem in all areas. If in doubt, err on the side of caution and to stick to mellow terrain.
="s_3FE45715">A weak layer buried mid-December now lies up to 90cm below the surface and has the potential for large avalanches. It's a tricky one to manage as it's not a problem in all areas. If in doubt, err on the side of caution and to stick to mellow terrain.
="s_3FE45715">A weak layer from early February down 50-80 cm remains reactive to human triggering in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
Storm slabs may take longer to settle and bond where they are sitting on a crust and/or a layer of facets that grew during the latest cold clear weather. Fracture propagations may be long resulting in large and dangerous avalanches.
A persistent weakness buried last week has the propensity to propagate slab fractures into large and dangerous avalanches. Deeper persistent weakness area also waking up in some parts of the region with isolated, but massive, recent avalanches.
A persistent weakness buried last week has the propensity to propagate slab fractures into large and dangerous avalanches. Deeper persistent weakness area also waking up in some parts of the region with isolated, but massive, recent avalanches.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Warming and sun-exposure is expected increase the likelihood of these massive avalanches, especially with cornice-fall triggers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Warming and sun-exposure is expected increase the likelihood of these massive avalanches, especially with cornice-fall triggers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Warming is expected to increase the likelihood of these large avalanches, especially with cornice-fall triggers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Warming is expected to increase the likelihood of these large avalanches, especially with cornice-fall triggers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Warming is expected to increase the likelihood of these large avalanches, especially with cornice-fall triggers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Warming is expected to increase the likelihood of these large avalanches, especially with cornice-fall triggers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Warming is expected to increase the likelihood of these large avalanches, especially with cornice-fall triggers.
Various persistent weakness throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or even a cornice failure will increase the likelihood of triggering these layers.
Various persistent weakness throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or even a cornice failure will increase the likelihood of triggering these layers.
Various persistent weakness throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or even a cornice failure will increase the likelihood of triggering these layers.
Various persistent weaknesses throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or even a cornice failure will increase the likelihood of triggering these layers.
Various persistent weaknesses throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or even a cornice failure will increase the likelihood of triggering these layers.
Various persistent weaknesses throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or even a cornice failure will increase the likelihood of triggering these layers.
Various persistent weaknesses throughout the snowpack create the potential for large step down avalanches. Sustained sun exposure or heavy triggers like a cornice fall could trigger a deep and destructive avalanche.
Various persistent weaknesses throughout the snowpack create the potential for large avalanches stepping down to buried weak layers. Sustained sun exposure or heavy triggers like a cornice fall could trigger deep, destructive avalanches.
="s_3FE45715">Expect persistent slabs to be become more reactive as recent new snow settles into a slab. Likely spots are sheltered open areas at and below tree line or sheltered northerly aspects in the alpine.
="s_3FE45715">Reactivity at the buried December 15 interface will likely be greater where the new snow has settled into a cohesive slab above buried surface hoar. Use extra caution in wind affected areas and around steeper, sheltered slopes at treeline and below.
">The December 15 interface will likely be most reactive where the new snow has settled into a slab over buried surface hoar. Use extra caution around steeper, sheltered slopes at treeline and below - especially if you see signs of slab formation.
">The December 15 interface will likely be most reactive where the new snow has settled into a slab over buried surface hoar. Use extra caution around steeper, sheltered slopes at treeline and below - especially if you see signs of slab formation.
">A weak layer of surface hoar buried 50-80 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab. The greatest caution is needed around steeper, sheltered slopes at treeline and below.
="s_3FE45715">A weak layer of surface hoar buried 50-80 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab. The greatest caution is needed around steeper, sheltered slopes at treeline and below.
="s_3FE45715">A weak layer of surface hoar buried 50-80 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 50-80 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 50-80 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 60-100 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 60-100 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 60-100 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 60-80 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab.
="s_3FE45715">Warming, particularly at treeline elevations, could turn powder into slabs which can fail on persistent weak layers.
="s_3FE45715">Around 50 to 70 cm of snow sits above a touchy weak layer.  As this snow settles and gains slab properties, a dangerous slab that is easily triggered will likely form.</span><span class="s_3FE45
="s_3FE45715">Around 50 to 70 cm of snow sits above a touchy weak layer.  As this snow settles and gains slab properties, a dangerous slab that is easily triggered will likely form.</span><span class="s_3FE45
="s_3FE45715">Around 40 to 80 cm of snow sits above two weak layers. As this snow continues to settle and gain slab properties, a dangerous slab that is easily triggered may form.
="s_3FE45715">Around 40 to 80 cm of snow sits above two weak layers. As this snow continues to settle and gains slab properties, a dangerous slab that is easily triggered may form. Shallower storm slabs could step down to this layer.
="s_3FE45715">Skier traffic has triggered large avalanches on this layer, which is buried around 40 to 80 cm in the snowpack. Shallower storm slabs could step down to this layer. If triggered, this layer could produce large, destructive </span><span class="s_3FE45715">avalanches that run far.</span><span class="s_3FE45
="s_3FE45715">Skier traffic has triggered large avalanches on this layer, which is buried around 40 to 80 cm in the snowpack. Shallower storm slabs could step down to this layer. If triggered, this layer could produce large, destructive avalanches that run far.
="s_3FE45715">Light triggers have released large avalanches on this layer, which is buried around 40 to 80 cm in the snowpack. When triggered, this layer is producing large, destructive avalanches that run far.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Light triggers have released large avalanches on this layer, which is buried around 70 to 110 cm deep in the snowpack. </span><span class="s_E6FD2046">Storm slabs are regularly stepping down to this layer. When triggered, it is producing large, destructive avalanches that run far.
="s_3FE45715">Light triggers have released large avalanches on this layer, which is buried around 70 to 110 cm deep in the snowpack. Storm slabs have also been stepping down to this layer. When triggered, it is producing large, destructive avalanches.
="s_3FE45715">Our complex snowpack is currently producing very large and destructive avalanches on weak layers buried up to 110 cm below the surface. Expert level knowledge and significant experience is required to venture into the backcountry at this time.
="s_3FE45715">Warm alpine temperatures and direct solar input Sunday produced very large natural avalanches and that activity is expected again Monday.  Avoid avalanche terrain, especially in the alpine, as the snowpack adjusts to recent loading and warmth.
="s_3FE45715">Alpine temperatures are expected to remain warm Monday night and above freezing temperatures are expected between valley bottom and 1000 m Tuesday, which may increase the likelihood of human triggered avalanches in unusual locations at low elevation.
="s_3FE45715">As new snow begins to fall we can't forget about the persistent weak layers lurking in our snowpack that continue to produce large human triggered avalanches. Keep the terrain choices reigned in as the snowpack adjusts to the new load.
="s_3FE45715">As new snow begins to stack up we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reigned in as the snowpack adjusts to the new load.
="s_3FE45715">The riding conditions may be great, but we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">The riding conditions may be great, but we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches at all elevations. Keep the terrain choices reined in as the snowpack adjusts to the new load.</span><span class="s_3FE45
="s_3FE45715">Three weak layers are lurking in our snowpack, which have produced very large avalanches. Use extreme caution in openings below treeline (such as cutblocks) and sheltered areas in the alpine and treeline, where weak layers may be preserved.
="s_3FE45715">Three weak layers are lurking in our snowpack and continue to produce very large avalanches. Use extreme caution in areas where weak layers may be preserved, such as in openings below treeline, and sheltered areas in the alpine and treeline.
="s_3FE45715">Three weak layers are lurking in our snowpack and continue to produce very large avalanches. Use extreme caution in areas where weak layers may be preserved, such as in openings below treeline, and sheltered areas in the alpine and treeline.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">As we move out of a major storm and avalanche cycle there is a lot of uncertainty surrounding the triggerability of our deeply buried persistent weak layers. When we don't know, we have to scale our terrain choices accordingly.
="s_3FE45715">Several deep weak layers in the snowpack remain sensitive to heavy triggers. The coming storm pattern is likely to produce more avalanches that step down to these layers. Seek out simple terrain that doesn't expose you to large avalanche paths.</span><span class="s_3FE45
="s_3FE45715">Several deeply buried weak layers are persisting in the snowpack and continue to produce very large avalanches, especially with heavy triggers. This is a time to carefully measure your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several deeply buried weak layers are persisting in the snowpack and continue to produce very large avalanches, especially with heavy triggers. This is a time to carefully measure your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several deeply buried persistent weak layers continue to produce very large avalanches that are often releasing naturally. This is a time to carefully limit your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several weak layers are lurking in our snowpack, which continue to produce very large avalanches that are propagating far, with high consequences.  Limit your exposure to avalanche terrain and avoid overhead hazards.</span><span class="s_3FE45
="s_3FE45715">Several weak layers are lurking in our snowpack, which are producing very large avalanches that propagate far, with high consequences. Rapid snowfall loading will increase the likelihood of triggering them.
="s_3FE45715">Several weak layers are lurking in our snowpack, which are producing very large avalanches that propagate far, with high consequences. Snowfall is rapidly loading these layers, increasing the likelihood of triggering them.
="s_3FE45715">Several unstable weak layers are lurking deep in our snowpack. These layers have the potential to be triggered both naturally and with skier or rider traffic. When triggered, these layers have been producing very large avalanches that can run far.
="s_3FE45715">Several unstable weak layers are lurking deep in our snowpack. These layers have the potential to be triggered both naturally and with skier or rider traffic. When triggered, these layers have been producing very large avalanches that run far.
="s_3FE45715">Several troublesome layers are producing very large, destructive avalanches. These could be triggered by the weight of a person or snowmobile, or a surface avalanche.</span><span class="s_3FE45
="s_3FE45715">Several troublesome layers exist in the snowpack. Although the likelihood of triggering a persistent slab has gone down, the consequences remain very high.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.</span><span class="s_3FE45
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Activity seems to be more prevalent in the south east corner of the region.
="s_3FE45715">Buried weak layers exist in the snowpack and may be reactive to large triggers such as a cornice or step-down from a wind slab release. Human triggering may also be possible from shallow or thin. rocky snowpack areas.
="s_3FE45715">Buried weak layers exist in the snowpack and may be reactive to large triggers such as a cornice or step-down from a wind slab release. Human triggering may also be possible from shallow or thin. rocky, unsupported terrain.
="s_3FE45715">Persistent weak crystals buried up to 80cm deep have &quot;woken-up&quot; with recent snow and wind, and large avalanches have surprised a few people in the south of the region. I'd carefully assess steep slopes at all elevation bands before dropping-in.
="s_3FE45715">An interface buried up to 70cm deep has &quot;woken-up&quot; with recent snow loading, and large avalanches have been triggered easily. Observations have been limited, but this problem seems most reactive in south-facing terrain where buried crusts exist.</span><span class="s_3FE45
;font-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_E6FD2046">An interface buried up to 70cm deep has &quot;woken-up&quot;. This problem seems most reactive in south-facing terrain where buried crusts exist.</span><span class="s_3FE45
">An interface buried up to 70cm deep has &quot;woken-up&quot;. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">An interface buried up to 70cm deep has &quot;woken-up&quot;. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">An weak layer buried up to 80cm deep &quot;woke-up&quot; last week. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">A weak layer buried up to 80cm deep &quot;woke-up&quot; last week. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">A weak layer buried up to 90cm deep &quot;woke-up&quot; last week. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot. Solar warming could make a slab easier to trigger too.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot. Solar warming could make persistent slabs easier to trigger.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot. Solar warming could make persistent slabs easier to trigger.
="s_3FE45715">Rising temperatures and strong sunshine are increasing concern for weak layers buried deep in the snowpack. In addition to human triggering in thin spots, solar warming and cornice releases are possible natural triggers for persistent slabs.
="s_3FE45715">Rising temperatures and strong sunshine are increasing concern for weak layers buried deep in the snowpack. In addition to human triggering in thin spots, solar warming and cornice releases are possible natural triggers for persistent slabs.
="s_3FE45715">Rising temperatures and strong sunshine are increasing concern for weak layers buried deep in the snowpack. In addition to human triggering in thin spots, solar warming and cornice releases are possible natural triggers for persistent slabs.
="s_3FE45715">Our mid-March weak layer of crust and surface hoar has been buried by up to 90 cm of storm snow and has shown prolonged reactivity since the last storm. Manage the uncertainty around triggering this layer by sticking to lower angle, supported slopes.
="s_3FE45715">Buried persistent weak layers 60 to 110 cm below the surface may roar back to life Tuesday as rain, strong warm wind, and a rapidly rising freezing level destabilize the upper snowpack. Cornice failure is also expected to be widespread Tuesday. 
40-80 cm of snow sits above a weak layer of facets from mid-December and continues to be reactive in parts of the region that have thinner snowpacks.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">40-80 cm of snow sits above a weak layer of facets from mid-December and has recently been reactive in parts of the region with thin snowpacks. Winds slabs may also step down and trigger this layer.</span><span class="s_AA239
="s_3FE45715">Where denser snow overlies weak sugary snow, there is the potential to trigger large dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
="s_3FE45715">Surface hoar and/or facets buried mid-December remains a concern in shallow snowpack areas.
="s_3FE45715">Surface hoar and/or facets buried mid-December remains a concern in shallow snowpack areas.
="s_3FE45715">Surface hoar and/or facets buried mid-December remains a concern in shallow snowpack areas.
="s_3FE45715">The surface hoar and facets buried mid-December formed a weak layer that remains a concern in shallow snowpack areas. Dig down and test this layer if you're considering a steeper line at treeline or higher.
="s_3FE45715">The surface hoar and facets buried mid-December formed a weak layer that remains a concern in shallow snowpack areas. Remember that a smaller wind slab avalanche may provide enough of a trigger to 'step down' to this deeper weakness.
="s_3FE45715">The surface hoar and facets buried mid-December formed a weak layer that remains a concern in shallow snowpack areas. Remember that a smaller wind slab avalanche may provide enough of a trigger to step down to this deeper weakness.
Rapid warming of the snowpack will increase the likelihood of triggering persistent weak layers that have been lingering deep in the snowpack.
Warming of the snowpack will increase the likelihood of triggering persistent weak layers that have been lingering deep in the snowpack.
Warming of the snowpack will increase the likelihood of triggering persistent weak layers that have been lingering deep in the snowpack.
Recent warming will have increased the likelihood of triggering persistent weak layers that have been lingering deeper in the snowpack
Recent warming will have increased the likelihood of triggering persistent weak layers that have been lingering deeper in the snowpack
Persistent slab problems are back in play as new load is added to the snowpack. Stick to supported terrain and exercise extra caution where new snow is piling onto a shallow snowpack.
Persistent slab problems are back in play as new load is added to the snowpack. Stick to supported terrain and exercise extra caution where new snow is piling onto a shallow snowpack.
Persistent slab problems are back in play as new load is added to the snowpack. Stick to supported terrain and exercise extra caution where new snow is piling onto a shallow snowpack.
Persistent slab problems may be back in play with the new load that has been added to the snowpack. Stick to supported terrain and exercise extra caution where new snow is piling onto a shallow snowpack.
Persistent slab problems may be back in play with the new load that has been added to the snowpack. Stick to supported terrain and exercise extra caution where the new snow has stacked onto a previously shallow snowpack.
Persistent slab problems may be back in play with the new load that has been added to the snowpack. Stick to supported terrain and exercise extra caution where the new snow has stacked onto a previously shallow snowpack.
Persistent slab problems may be back in play with the new load that has been added to the snowpack. Stick to supported terrain and exercise extra caution where the new snow has stacked onto a previously shallow snowpack.
Persistent slab problems may be back in play with the new load that has been added to the snowpack. Stick to supported terrain and exercise extra caution where the new snow has stacked onto a previously shallow snowpack.
Persistent slab problems may be back in play with the new load that has been added to the snowpack and the upcoming warming. Stick to supported terrain and exercise extra caution where the new snow lies over a previously shallow snowpack.
Persistent slab problems may be back in play with the new load that has been added to the snowpack and the upcoming warming. Stick to supported terrain and exercise extra caution where the new snow lies over a previously shallow snowpack.
A weak layer from early February down 60-80 cm remains reactive to human triggering in isolated areas. Deeper weak layers in the snowpack appear to have woken up this week and very large avalanches are possible in isolated areas.
A persistent weakness down 60-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
A persistent weakness down 60-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
A persistent weakness down 60-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
A persistent weakness down 60-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
A persistent weakness down 60-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
A persistent weakness down 60-80 cm remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
A persistent weakness down 60-80 cm remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
A persistent weakness down 60-80 cm remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Warming is expected to increase the likelihood of these large avalanches, especially with cornice-fall triggers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or a cornice fall increase the likelihood of triggering these layers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or a cornice fall increase the likelihood of triggering these layers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or a cornice fall increase the likelihood of triggering these layers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or a cornice fall increase the likelihood of triggering these layers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or a cornice fall increase the likelihood of triggering these layers.
Various persistent weaknesses strewn throughout the snowpack create the potential for large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or a cornice fall increase the likelihood of triggering these layers.
="s_3FE45715">Various persistent weaknesses throughout the snowpack create the potential for large step down avalanches. Sustained sun exposure or heavy triggers like a cornice fall could trigger a deep and destructive avalanche.
: Normal;font-weight: normal;font-size: 16px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_1681A555">Recent rain at most elevations combined with overnight cooling Thursday night will reduce the likelihood of triggering this layer. Areas in which the snowpack above this layer remained dry should be treated with increased caution.</span><span class="s_AA239
Reactivity at the buried December 15 interface will likely be greater where the new snow has settled into a cohesive slab above buried surface hoar. Use extra caution in wind affected areas and around steeper, sheltered slopes at treeline and below.
Reactivity at the buried December 15 interface will likely be greater where the new snow has settled into a cohesive slab above buried surface hoar. Use extra caution in wind affected areas and around steeper, sheltered slopes at treeline and below.
Reactivity at the buried December 15 interface will likely be greater where the new snow has settled into a cohesive slab above buried surface hoar. Use extra caution around steeper, sheltered slopes at treeline and below.
A weak layer of surface hoar buried 30-50 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab. The greatest caution is needed around steeper, sheltered slopes at treeline and below.
A weak layer of surface hoar buried 30-50 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab. The greatest caution is needed around steeper, sheltered slopes at treeline and below.
A weak layer of surface hoar buried 30-50 cm deep may be reactive where the overlying snow has settled into a cohesive slab.
A weak layer of surface hoar buried 30-50 cm deep may be reactive where the overlying snow has settled into a cohesive slab.
A weak layer of surface hoar buried 30-50 cm deep may be reactive where the overlying snow has settled into a cohesive slab.
A weak layer of surface hoar buried 30-50 cm deep may be reactive where the overlying snow has settled into a cohesive slab.
A weak layer of surface hoar buried 30-50 cm deep may be reactive where the overlying snow has settled into a cohesive slab.
A weak layer of surface hoar buried 30-50 cm deep is expected to become more reactive as warmer temperatures help settle recent new snow into a cohesive slab.
A weak layer of surface hoar buried 30-50 cm deep is expected to become more reactive as warmer temperatures help settle recent new snow into a cohesive slab.
A weak layer of surface hoar buried 30-50 cm deep is expected to become more reactive as warmer temperatures help settle recent new snow into a cohesive slab.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">Around 40 to 80 cm of snow sits above a touchy weak layer.  As this snow settles and becomes more cohesive, a dangerous slab that is easily triggered will likely form.</span><span class="s_AA239
="s_3FE45715">Around 40 to 80 cm of snow sits above a touchy weak layer.  As this snow settles and gains slab properties, a dangerous slab that is easily triggered will likely form.</span><span class="s_3FE45
="s_3FE45715">Around 40 to 80 cm of snow sits above a touchy weak layer. As this snow settles and gains slab properties, a dangerous slab that is easily triggered will likely form.
="s_3FE45715">Around 40 to 80 cm of snow sits above a touchy weak layer. As this snow settles and gains slab properties, a dangerous slab that is easily triggered will likely form.
="s_3FE45715">Around 40 to 80 cm of snow sits above a touchy weak layer. Recent reports indicate that this snow is consolidating and gaining slab properties and could be triggered by humans.</span><span class="s_3FE45
="s_3FE45715">Around 40 to 80 cm of snow sits above a touchy weak layer. Recent reports indicate that this snow is consolidating and gaining slab properties and could be triggered by humans.
="s_3FE45715">40 to 80 cm of snow now sits above a touchy weak layer. Remote and natural triggering has become a regular occurrence. Widespread avalanche activity has occurred on this layer in nearby regions and similar potential exists in the Purcells.
="s_3FE45715">40 to 90 cm of snow now sits above a touchy weak layer. Remote and natural triggering has become a regular occurrence. Widespread avalanche activity has occurred on this layer in nearby regions and similar activity is now being reported from Purcells
="s_3FE45715">40 to 90 cm of snow now sits above a touchy weak layer. Remote and natural triggering has become a regular occurrence. Widespread avalanche activity has occurred on this layer in nearby regions and similar activity is now being reported from Purcells
="s_3FE45715">40 to 90 cm of snow now sits above a touchy weak layer. Remote and natural triggering has become a regular occurrence. Widespread avalanche activity has occurred on this layer in nearby regions and similar activity is now being reported from Purcells
="s_3FE45715">Continued warm alpine temperatures and direct solar input Monday are likely to produce very large natural avalanches. Continue to avoid avalanche terrain, especially in the alpine, as the snowpack adjusts to recent loading and warmth.
="s_3FE45715">Alpine temperatures are expected to remain warm Monday night and above freezing temperatures are expected between valley bottom and 1000 m Tuesday, which may increase the likelihood of human triggered avalanches in unusual locations at low elevation.
="s_3FE45715">As new snow begins to fall we can't forget about the persistent weak layers lurking in our snowpack that continue to produce large avalanches. Keep the terrain choices reigned in as the snowpack adjusts to the new load.
="s_3FE45715">As new snow begins to stack up we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reigned in as the snowpack adjusts to the new load.
="s_3FE45715">The riding conditions may be great, but we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">The riding conditions may be great, but we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.</span><span class="s_3FE45
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.</span><span class="s_3FE45
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">Three weak layers are lurking in our snowpack, which have produced very large avalanches. Use extreme caution in openings below treeline (such as cutblocks) and sheltered areas in the alpine and treeline, where weak layers may be preserved.
="s_3FE45715">Three weak layers are lurking in our snowpack that continue to produce very large avalanches. Use extreme caution in areas where weak layers may be preserved, such as in openings below treeline, and sheltered areas in the alpine and treeline.
="s_3FE45715">Three weak layers are lurking in our snowpack that continue to produce very large avalanches. Use extreme caution in areas where weak layers may be preserved, such as in openings below treeline, and sheltered areas in the alpine and treeline.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.</span><span class="s_3FE45
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">As we move out of a very large storm and avalanche cycle there is a lot of uncertainty surrounding the triggerability of our deeply buried persistent weak layers. When we don't know, we have to scale our terrain choices accordingly.
="s_3FE45715">Deep weak layers are persisting in the snowpack and remain sensitive to heavy triggers. </span><span class="s_3FE45715">Another active storm pattern will progressively undermine stability in the coming days. Seek out simple terrain that doesn't expose you to large avalanche paths.</span><span class="s_3FE45
="s_3FE45715">Several deeply buried weak layers are persisting in the snowpack and continue to produce very large avalanches, especially with heavy triggers. This is a time to carefully measure your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several deeply buried weak layers are persisting in the snowpack and continue to produce very large avalanches, especially with heavy triggers. This is a time to carefully measure your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several deeply buried weak layers continue to produce very large avalanches on a regular basis. This is happening both naturally and with large triggers. This is a time to carefully limit your exposure to avalanche terrain and avoid overhead hazards.
="s_3FE45715">Several weak layers are lurking in our snowpack, which continue to produce very large avalanches with high consequences. Limit your exposure to avalanche terrain and avoid overhead hazards.
="s_3FE45715">Several weak layers are lurking in our snowpack, which continue to produce very large avalanches with high consequences. Limit your exposure to avalanche terrain and avoid overhead hazards.
="s_3FE45715">Several weak layers are lurking in our snowpack, which are producing very large avalanches that propagate far, with high consequences. Snowfall is rapidly loading these layers, increasing the likelihood of triggering them. These could run full-path.
="s_3FE45715">Several unstable weak layers are lurking deep in our snowpack. These layers have the potential to be triggered both naturally and with skier or rider traffic. When triggered, these layers have been producing very large avalanches that can run far.
="s_3FE45715">Several unstable weak layers are lurking deep in our snowpack. These layers have the potential to be triggered both naturally and with skier or rider traffic. When triggered, these layers have been producing very large avalanches that can run far.
="s_3FE45715">Several troublesome layers are producing very large, destructive avalanches. These could be triggered by the weight of a person or snowmobile, or a surface avalanche.
="s_3FE45715">Several troublesome layers exist in the snowpack. Although the likelihood of triggering a persistent slab has gone down, the consequences remain very high.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Buried weak layers exist in the snowpack and may be reactive to large triggers such as a cornice or step down from a wind slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Buried weak layers exist in the snowpack and may be reactive to large triggers such as a cornice or step down from a wind slab release. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist in the snowpack and may be reactive to large triggers such as a cornice or step down from a wind slab release. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist in the snowpack and may be reactive to large triggers such as a cornice or step down from a wind slab release. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist in the snowpack and may be reactive to large triggers such as a cornice or step down from a wind slab release. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">An interface buried up to 70cm deep has &quot;woken-up&quot; with recent snow loading, and large avalanches have been triggered easily in deeper snowpack areas to the west. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">An interface buried up to 70cm deep has &quot;woken-up&quot;. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">An interface buried up to 70cm deep has &quot;woken-up&quot;. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">An interface buried up to 70cm deep has &quot;woken-up&quot;. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">An interface buried up to 90cm deep &quot;woken-up&quot; last week. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">A weak layer buried up to 90cm deep &quot;woken-up&quot; last week. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">A weak layer buried up to 90cm deep &quot;woken-up&quot; last week. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot. Solar warming could make a slab easier to trigger too.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot.
="s_3FE45715">Rising temperatures and strong sunshine are increasing concern for weak layers buried deep in the snowpack. In addition to human triggering in thin spots, solar warming and cornice releases are possible natural triggers for persistent slabs.
="s_3FE45715">Rising temperatures and strong sunshine are increasing concern for weak layers buried deep in the snowpack. In addition to human triggering in thin spots, solar warming and cornice releases are possible natural triggers for persistent slabs.
="s_3FE45715">Rising temperatures and strong sunshine are increasing concern for weak layers buried deep in the snowpack. In addition to human triggering in thin spots, solar warming and cornice releases are possible natural triggers for persistent slabs.
="s_3FE45715">Weak layers of crust and surface hoar have been buried by a variable 20-70 cm of storm snow and have shown continued reactivity since the last storm. Manage the uncertainty around triggering these layers by sticking to lower angle, supported slopes.
="s_3FE45715">A weak layer of crust and surface hoar has been buried by a variable 20-80 cm of storm snow and has shown continued reactivity since the last storm. Manage the uncertainty around triggering this layer by sticking to lower angle, supported slopes.
="s_3FE45715">A weak layer of crust and surface hoar has been buried by a variable 20-80 cm of storm snow and has shown continued reactivity since the last storm. Manage the uncertainty around triggering this layer by sticking to lower angle, supported slopes.
="s_3FE45715">Buried persistent weak layers 40 to 90 cm below the surface may roar back to life Tuesday as rain, strong warm wind, and a rapidly rising freezing level destabilize the upper snowpack. Cornice failure is also expected to be widespread Tuesday.
A few large persistent slab avalanches were recently noted in the Corbin area, although I'm unsure of how far-reaching this problem is in the region. I'd carefully test for weak layers before committing to any steep slopes.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
A variable weak layer buried approximately 50 cm below the surface will likely remain sensitive to human-triggered avalanches after the storm ends. Sheltered areas with steep, unsupported terrain are the most likely places to be caught.
A variable weak layer buried approximately 60 cm below the surface will likely remain sensitive to human-triggered avalanches in areas with stiffer snow. Sheltered areas with steep, unsupported terrain are the most likely places to be caught.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">A weak layer 50-80 cm below the surface has the potential to produce surprising avalanches. Triggering this layer is most likely in areas with stiffer snow on sheltered slopes. Read more about this problem in the forecasters' blog </span><a id='GoToAdded' href="http://www.avalanche.ca/blogs/171222_christmas-surprises" target="_blank"><span class="s_9255B882">(here)</span></a><span class="s_AA239A9B">.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A layer of surface hoar buried 50-70 cm below the surface has the potential to produce surprising avalanches. Triggering this layer is most likely in on steep sheltered slopes at treeline and below.</span><span class="s_AA239
="s_3FE45715">A layer of surface hoar buried 50-70 cm below the surface has the potential to produce surprising avalanches. Triggering this layer is most likely in on steep sheltered slopes at treeline and below.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-60 cm below the surface. Triggering an avalanche on this layer is possible in areas where the snow has settled into a cohesive slab.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-60 cm below the surface. Triggering an avalanche on this layer is possible in areas where the snow has settled into a cohesive slab.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 60-80 cm below the surface. Triggering an avalanche on this layer is possible in areas where the snow has settled into a cohesive slab.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 60-80 cm below the surface.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 60-80 cm below the surface.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 60-80 cm below the surface.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 60-80 cm below the surface. This layer continues to be very reactive to human triggers and may not improve anytime soon.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-70 cm below the surface. This layer continues to be very reactive to human triggers and may not improve anytime soon.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-70 cm below the surface. This layer continues to reactive.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-70 cm below the surface. This layer continues to reactive.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-70 cm below the surface. This layer continues to be reactive to human traffic.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-70 cm below the surface. This layer continues to be reactive to human traffic. To make matters worse, this layer is seeing more load and warming temperatures.
="s_3FE45715">Weak layers are buried within a prime depth range for human triggering. These are most prevalent at and below treeline. Warming, snow and wind are all adding stress to these layers.
="s_3FE45715">New snow may overload already touchy weak layers, making for volatile avalanche conditions.
="s_3FE45715">Touchy weak layers are making for volatile avalanche conditions. Large avalanches are failing naturally and with very easy (even remote) triggers.
="s_3FE45715">Skier and machine traffic have triggered large avalanches on buried weak layers, even in relatively dense trees and shallow slope angles. These weak layers are touchy and can produce large, destructive avalanches that run far.
="s_3FE45715">Skier and machine traffic have triggered large avalanches on buried weak layers, even in fairly dense trees and shallow slope angles. These weak layers are touchy and can produce very large, destructive avalanches that run far.
="s_3FE45715">Skier and machine traffic have triggered large avalanches on buried weak layers, even in fairly dense trees and shallow slope angles. These weak layers are touchy and can produce very large, destructive avalanches that run far.
="s_3FE45715">Large avalanches are being triggered on buried weak layers, even in fairly dense trees and shallow slope angles, including remotely triggered slides. These layers are touchy and can produce very large, destructive avalanches that run far.
="s_3FE45715">Large avalanches are being triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles, including remotely triggered slides. These layers are touchy and can produce very large, destructive avalanches that run far.
="s_3FE45715">Large avalanches are being triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles, including remotely triggered slides. These layers are touchy and can produce very large, destructive avalanches that run far.
="s_3FE45715">Large avalanches may be triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles.
="s_3FE45715">Large avalanches may be triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles. Stress on these weak layers will increase as new snow and wind load the snowpack on Thursday.
="s_3FE45715">Large avalanches may be triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles. Stress on these weak layers will increase as wind continues to load the snowpack on Friday.
="s_3FE45715">Large avalanches may be triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles. Stress on these weak layers will increase as wind continues to load lee areas this weekend.
="s_3FE45715">Large avalanches were recently triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles. Stress on these weak layers will increase as wind continues to load lee areas this weekend.
="s_3FE45715">Avalanche activity on deeply buried weak layers has become increasingly sporadic, but large avalanches continue to occur in isolated areas. Resist the urge to rush into bigger terrain before persistent slabs become fully unreactive.
="s_3FE45715">Avalanche activity on deeply buried weak layers has become increasingly sporadic, but very large avalanches continue to run naturally and with the right trigger. Resist the urge to rush into bigger terrain before persistent slabs become unreactive.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and have the potential to produce large avalanches. Conservative terrain with moderate-angled, supported slopes are good choices.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and have the potential to produce large avalanches. Conservative terrain with moderate-angled, supported slopes are good choices.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and have the potential to produce large avalanches. Conservative terrain with moderate-angled, supported slopes are good choices.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and produced several recent large and very large avalanches. Simple terrain with low angle, supported slopes is a good choice.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and produced several recent large and very large avalanches. Simple terrain with low angled, supported slopes is a good choice.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and produced several recent large and very large avalanches. Simple terrain with low angled, supported slopes is a good choice.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and produced several recent large and very large avalanches. Simple terrain with low angled, supported slopes is a good choice.
Weak snow in the lower snowpack has been reactive recently in the southeast of the region. Triggering may be possible from thin snowpack areas, or smaller avalanches could step down to this layer.
Weak faceted snow exists in the lower snowpack and may be possible to trigger in thin snowpack areas or on wind-loaded slopes.
Weak faceted snow exists in the lower snowpack and may be possible to trigger in thin snowpack areas or on wind-loaded slopes.
Weak faceted snow exists in the lower snowpack and may be possible to trigger in thin snowpack areas and on wind-loaded slopes.
In many places there appears to be insufficient stiffness in the slab for persistent slabs to be a concern. However, where denser snow exists, the weak facets in the lower half of the snowpack pose a concern, particularly on convex slopes.
Where denser snow overlies weak, sugary snow below, there is the potential to trigger large, dangerous avalanches.
Where denser snow overlies weak, sugary snow below, there is the potential to trigger large, dangerous avalanches.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
Where denser snow overlies weak, sugary snow, there is the potential to trigger large, dangerous avalanches. Dig down and test for weak layers before committing to any steep slope.
="s_3FE45715">Triggering deeper weak layers will remain possible with warm temperatures and wind loading.
="s_3FE45715">Triggering deeper weak layers remains possible where hard slabs sit above weak sugary snow.
A variable weak layer is buried 30-60 cm below the surface. It is most likely to be reactive in steep, unsupported terrain in sheltered locations where surface hoar crystals may have been preserved.
A variable weak layer is buried 40-80 cm below the surface. It is most likely to be reactive in steep, unsupported terrain in sheltered locations where surface hoar crystals may have been preserved.
tyle: Normal;font-weight: normal;font-size: 13.3333333333333px;color: #0000FF;text-decoration: underline; } 
.s_AA239A9B { font-family: 'Arial';font-style: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">A weak layer 40-80 cm below the surface has the potential to produce surprising avalanches. Triggering this layer is most likely in areas with stiffer snow on sheltered slopes. Read more about this problem in the forecasters' blog </span><a id='GoToAdded' href="http://www.avalanche.ca/blogs/171222_christmas-surprises" target="_blank"><span class="s_B5813F7D">(here)</span></a><span class="s_3FE45715">. </span><span class="s_AA239
="s_3FE45715">A layer of surface hoar buried 40-80 cm below the surface has the potential to produce surprising avalanches. Triggering this layer is most likely in on steep sheltered slopes at treeline and below.
="s_3FE45715">A layer buried 40-80 cm below the surface has the potential to produce surprising avalanches. Triggering this layer is most likely in on steep sheltered slopes at treeline and below.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 30-60 cm below the surface. Triggering an avalanche on this layer is possible in areas where the snow has settled into a cohesive slab.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 30-60 cm below the surface. Triggering an avalanche on this layer is possible in areas where the snow has settled into a cohesive slab.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-80 cm below the surface. Triggering an avalanche on this layer is possible in areas where the snow has settled into a cohesive slab.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-80 cm below the surface.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-80 cm below the surface.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 40-80 cm below the surface.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 35-70 cm below the surface. This layer continues to be very reactive to human triggers and may not improve anytime soon.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 35-70 cm below the surface. This layer continues to be very reactive to human triggers and may not improve anytime soon.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 35-70 cm below the surface. This layer continues to be very reactive to human triggers and may not improve anytime soon.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 35-70 cm below the surface. This layer continues to be very reactive to human triggers and may not improve anytime soon.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 35-70 cm below the surface. This layer continues to be very reactive to human triggers and may not improve anytime soon.
="s_3FE45715">A weak layer composed of surface hoar and/or crusts is buried 35-70 cm below the surface. This layer continues to be reactive to human triggers and may not improve anytime soon.
an';font-style: Normal;font-weight: normal;font-size: 16px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">Weak layers are buried within a prime depth range for human triggering. These are most prevalent at and below treeline. </span><span class="s_1681A
="s_3FE45715">New snow may overload an already touchy weak layer, making avalanches especially likely in below treeline terrain.
="s_3FE45715">New snow may overload an already touchy weak layer. Persistent slabs are especially likely at and below treeline. The trees may not be the safe haven you expect: adopt a cautious attitude to all avalanche terrain.
="s_3FE45715">New snow may overload touchy weak layers. The trees may not be the safe haven you expect: adopt a cautious attitude to all avalanche terrain.
="s_3FE45715">New snow may overload touchy weak layers. The trees may not be the safe haven you expect: adopt a cautious attitude to all avalanche terrain.</span><span class="s_3FE45
="s_3FE45715">Forecasted warm air temperatures could increase the likelihood of triggering buried weak layers. The trees may not be the safe haven you expect: adopt a cautious attitude to all avalanche terrain.
="s_3FE45715">Forecasted warm air temperatures could increase the likelihood of triggering buried weak layers. The trees may not be the safe haven you expect: adopt a cautious attitude to all avalanche terrain.
="s_3FE45715">Forecasted warm air temperatures could increase the likelihood of triggering buried weak layers. The trees may not be the safe haven you expect: adopt a cautious attitude to all avalanche terrain.
="s_3FE45715">Forecasted warm air temperatures could increase the likelihood of triggering buried weak layers. The trees may not be the safe haven you expect: adopt a cautious attitude to all avalanche terrain.
="s_3FE45715">Large avalanches may be triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Large avalanches may be triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles. </span><span class="s_E6FD2046">Stress on deep weak layers will increase as new snow and wind load the snowpack on Thursday.</span><span class="s_3FE45
-style: Normal;font-weight: normal;font-size: 16px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">Large avalanches may be triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles. </span><span class="s_E6FD2046">Stress on deep weak layers will increase as strong winds continue to load the snowpack on Friday.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Large avalanches may be triggered on a number of buried weak layers, even in fairly dense trees and shallow slope angles. </span><span class="s_E6FD2046">Stress on deep weak layers will increase as southwest winds continue to load lee areas over the weekend.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Potential still exists for large avalanches to be triggered on deeply buried weak layers, even in fairly dense trees and shallow slope angles. </span><span class="s_E6FD2046">Stress on deep weak layers will increase as southwest winds continue to load lee areas over the weekend.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Persistent slab activity has been declining, but potential still exists for large avalanches to be triggered on deeply buried weak layers. </span><span class="s_E6FD2046">Stress on deep weak layers will increase as intense southwest winds continue to load lee areas.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Persistent slab activity has been declining, but potential still exists for large avalanches to be triggered on deeply buried weak layers. </span><span class="s_E6FD2046">Stress on deep weak layers will increase as intense southwest winds continue to load lee areas.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and have the potential to produce large avalanches. Conservative terrain with moderate-angled, supported slopes are good choices.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and have the potential to produce large avalanches. Conservative terrain with moderate-angled, supported slopes are good choices.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and have the potential to produce large avalanches. Conservative terrain with moderate-angled, supported slopes are good choices.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and have the potential to produce large avalanches. Conservative terrain with moderate-angled, supported slopes are good choices.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and have the potential to produce large avalanches. Conservative terrain with moderate-angled, supported slopes are good choices.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and have the potential to produce large avalanches. Conservative terrain with moderate-angled, supported slopes are good choices.
="s_3FE45715">Several weak layers of concern are buried within the snowpack and have the potential to produce large avalanches. Conservative terrain with moderate-angled, supported slopes are good choices.
="s_3FE45715">Storm snow from the last week has coalesced into a slab up to a meter in depth that is poorly bonded to the old surface due to a persistent buried weak layer. These slow to heal slabs are most likely to be triggered in wind exposed terrain.
="s_3FE45715">Up to 1 m of snow which accumulated over the past week is poorly bonded to a buried persistent weak layer. These slabs appear to be most reactive in wind loaded terrain where the slab may be up to 1.5 m thick.
="s_3FE45715">Up to 1 m of snow which accumulated over the past week is poorly bonded to a buried persistent weak layer. These slabs appear to be most reactive in wind loaded terrain where the slab may be up to 1.5 m thick.
="s_3FE45715">Up to 1 m of snow which accumulated over the past week is poorly bonded to a buried persistent weak layer. These slabs appear to be most reactive in wind loaded terrain where the slab may be up to 1.5 m thick.
="s_3FE45715">Up to a metre of snow from the past week is bonding poorly to a buried persistent weak layer. The likelihood of triggering a deeply buried weakness will be increasing while new snow and wind add load to the snowpack.
="s_3FE45715">Up to a metre of snow from the past week is bonding poorly to a buried persistent weak layer. The likelihood of triggering a deeply buried weakness will be increasing while new snow and wind add load to the snowpack.
="s_3FE45715">Up to a metre of snow from the past week is bonding poorly to a buried persistent weak layer. The likelihood of triggering a deeply buried weakness will be increasing while new snow and wind add load to the snowpack.
="s_3FE45715">A metre or more of snow from the past week is bonding poorly to a buried persistent weak layer. The likelihood of triggering a deeply buried weakness will be increasing while new snow and wind add load to the snowpack and as temperatures rise.
="s_3FE45715">A metre or more of snow from the past week is bonding poorly to a buried persistent weak layer. The likelihood of triggering a deeply buried weakness will be increasing while new snow and wind add load to the snowpack and as warm temperatures persist
="s_3FE45715">A weak layer down around 1 metre is creating a low probability/high consequence scenario. It may still be possible to directly trigger this layer in isolated areas or a small avalanche or cornice fall could step down to it.
="s_3FE45715">A weak layer down around 1 metre is creating a low probability/high consequence scenario. It is unlikely to directly trigger this layer but a small avalanche or cornice fall could still step down to it.
="s_3FE45715">A layer of surface hoar, sugary facets, and/or crust is buried 50-100 cm deep and has produced widespread whumpfing, concerning snowpack test results, and a few large remotely triggered avalanches. Upper treeline elevations are the greatest concern.
="s_3FE45715">A layer of surface hoar, sugary facets, and/or crust is buried 50-100 cm deep and has produced widespread whumpfing, concerning snowpack test results, and a few large remotely triggered avalanches. Upper treeline elevations are the greatest concern.
="s_3FE45715">A layer of surface hoar, sugary facets, and/or crust is buried 50-100 cm deep and has produced widespread whumpfing, concerning snowpack test results, and a few large remotely triggered avalanches. Upper treeline elevations are the greatest concern.
="s_3FE45715">A layer of surface hoar, sugary facets, and/or crust is buried 50-100 cm deep and has produced widespread whumpfing, concerning snowpack test results, and a few large remotely triggered avalanches. Upper treeline elevations are the greatest concern.
="s_3FE45715">A layer of surface hoar, sugary facets, and/or crust is buried 50-100 cm deep and has produced widespread whumpfing, concerning snowpack test results, and a few large remotely triggered avalanches. Upper treeline elevations are the greatest concern.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads increase.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads increase.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads increase.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads increase.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads increase.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads increase.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads increase.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads or temperatures increase.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads or temperatures increase.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads or temperatures increase.
This problem is more prevalent in the far north areas of the region and is a low likelihood, high consequence scenario that will need to be monitored as snow loads or temperatures increase.
A persistent weak layer existing mainly in the north of the region is creating a 'low probabity/high consequence' avalanche problem. The recent storm has added a fresh load above this layer, potentially increasing its likelihood of triggering.
A persistent weak layer existing mainly in the north of the region is creating a 'low probabity/high consequence' avalanche problem. The recent storm has added a fresh load above this layer, potentially increasing its likelihood of triggering.
="s_3FE45715">Storm snow from the last week has coalesced into a slab up to a meter in depth that is poorly bonded to the old surface due to buried persistent weak layers. These slow to heal slabs are most likely to be triggered in wind exposed terrain.
="s_3FE45715">Up to 1 m of snow which accumulated over the past week is poorly bonded to a buried persistent weak layer. These slabs appear to be most reactive in wind loaded terrain where the slab may be up to 1.5 m thick.
="s_3FE45715">Up to 1 m of snow which accumulated over the past week is poorly bonded to a buried persistent weak layer. These slabs appear to be most reactive in wind loaded terrain where the slab may be up to 1.5 m thick.
="s_3FE45715">Up to 1 m of snow which accumulated over the past week is poorly bonded to a buried persistent weak layer. These slabs appear to be most reactive in wind loaded terrain where the slab may be up to 1.5 m thick.
="s_3FE45715">Up to 1 m of snow which accumulated over the past week is poorly bonded to a buried persistent weak layer. These slabs appear to be most reactive in wind loaded terrain where the slab may be up to 1.5 m thick.
="s_3FE45715">Recent large avalanches have run on a persistent weak layer now buried up to a metre below the surface. This type of feedback can't be ignored. Warming temperatures and incremental loading increase the potential for deep releases.
="s_3FE45715">Recent large avalanches have run on a weak layer buried up to a metre below the surface in the north of the region. This type of feedback can't be ignored. Warming temperatures and incremental loading increase the potential for deep releases.
="s_3FE45715">Recent large avalanches have run on a weak layer buried up to a metre below the surface in the north of the region. This type of feedback can't be ignored. Warming temperatures and incremental loading increase the potential for deep releases.
="s_3FE45715">Recent large avalanches have run on a weak layer buried up to a metre deep in the north of the region. This type of feedback can't be ignored. Warming temperatures and loading from wind, snow, and rain increase the potential for deep releases.
="s_3FE45715">A weak layer down around 1 metre is creating a low probability/high consequence scenario. It may still be possible to directly trigger this layer in isolated areas or a small avalanche or cornice fall could step down to it.
="s_3FE45715">A weak layer down around 1 metre is creating a low probability/high consequence scenario. It is unlikely to directly trigger this layer but a small avalanche or cornice fall could still step down to it.
="s_3FE45715">A weak layer down around 1 metre is creating a low probability/high consequence scenario. It is unlikely to directly trigger this layer but a small avalanche or cornice fall could still step down to it.
A layer of surface hoar down 80-120 cm and/or a weak crust layer near the bottom of the snowpack may wake-up as a result of wind loading. Wind slab avalanches may step down to these layers resulting in very large and destructive avalanches.
The early December cold snap has left several weak layers composed of surface hoar and facets buried about 1 metre deep. Additional loading from new snow and wind could potentially release large avalanches on these layers.
The additional load of storm snow will make it possible to trigger deeper weak layers that formed during the early December cold snap. These weak layer include facets and surface hoar that are buried over 1 metre deep.
The additional load of storm snow may make it possible to trigger deeper weak layers that formed in isolated areas during the early December cold snap. These weak layers include facets and surface hoar that are buried over one metre deep.
The additional load of storm snow may make it possible to trigger deeper weak layers that formed in isolated areas during the early December cold snap. These weak layers include facets and surface hoar that are buried 100-150 cm deep.
The additional load of storm snow may make it possible to trigger deeper weak layers that formed in isolated areas during the early December cold snap. These weak layers include facets and surface hoar that are buried 100-150 cm deep.
The additional load of storm snow may make it possible to trigger deeper weak layers that formed in isolated areas during the early December cold snap. These weak layers include facets and surface hoar that are buried 100-150 cm deep.
A recently buried surface hoar layer is highly sensitive to human triggering and has given a few people a scare in the Terrace area. Brief warming on Friday night may add cohesion to the slab allowing it to propagate over wider distances.
A recently buried surface hoar layer is highly sensitive to human triggering and has given a few people a scare in the Terrace area. Forecast extreme winds may press and add cohesion to the slab promoting wider  propagations.
A recently buried surface hoar layer is highly sensitive to human triggering and has given a few people a scare in the Terrace area. Forecast extreme winds may press and add cohesion to the slab promoting wider propagations.
Surface hoar that was buried last week continues to be sensitive to human triggering in the Terrace area. This problem may be more widespread across the southern half of the region. Please submit your observations to the MIN.
Dig down and test small slopes in the alpine before committing to large terrain features. Watch for increased reactivity on solar exposed aspects where the inversion may result in above freezing temperatures.
Dig down and test small slopes in the alpine before committing to large terrain features. Conditions may change quickly around treeline where there was a band of warm air on Wednesday.
New snow will be adding load to to our persistent weak layer on Friday. Take extra care to avoid thin trigger points and exposure to overhead hazard during the storm.
New snow has added load to our persistent weak layers. Take extra care to avoid thin trigger points and exposure to overhead hazard during the storm.
Weak layers of buried surface hoar up to a metre deep may be reactive after the recent loading. Take extra care to avoid thin trigger points and exposure to overhead hazard.
Weak layers of buried surface hoar up to 1.5 metres deep may be reactive after the recent loading. Take extra care to avoid thin trigger points and exposure to overhead hazard.
Weak layers of buried surface hoar up to 1.5 metres deep may be reactive after the recent loading. Take extra care to avoid thin trigger points and exposure to overhead hazard.
Weak layers of buried surface hoar up to 1.2 metres deep may be reactive after the recent loading. Take extra care to avoid thin trigger points and exposure to overhead hazard.
Weak layers of surface hoar are now buried up to 1.2 metres deep and may be more reactive after the recent loading. Take extra care to avoid thin trigger points and exposure to overhead hazard.
Weak layers of surface hoar are now buried up to 1.2 metres deep and may be more reactive after the recent loading. Take extra care to avoid thin trigger points and exposure to overhead hazard.
Weak layers of surface hoar are now buried up to 1.2 metres deep and may be more reactive after the recent loading. Take extra care to avoid thin trigger points and exposure to overhead hazard.
Weak layers of surface hoar are now buried up to 1.2 metres deep and may be more reactive after the recent loading. Take extra care to avoid thin trigger points and exposure to overhead hazard.
It is still possible to trigger avalanches on buried weak layers (Dec 25, Dec 30, Jan 5th, Jan 12th surface hoar) ... or have a smaller avalanche 'step down' and trigger deeper instabilities.
It is still possible to trigger avalanches on buried weak layers (Dec 25, Dec 30, Jan 5th, Jan 12th surface hoar) ... or have a smaller avalanche 'step down' and trigger deeper instabilities.
It is still possible to trigger avalanches on buried weak layers (Dec 25, Dec 30, Jan 5th, Jan 12th surface hoar) ... or have a smaller avalanche 'step down' and trigger deeper instabilities.
It's still possible to trigger avalanches on buried weak layers (Dec 25, Dec 30, Jan 5th, Jan 12th surface hoar) ... or have a smaller avalanche 'step down' and trigger deeper instabilities.
It may still be possible to trigger avalanches on buried weak layers (Dec 25, Dec 30, Jan 5th, Jan 12th surface hoar) ... or have a smaller avalanche 'step down' and trigger deeper instabilities.
It may still be possible to trigger avalanches on buried weak layers (Dec 25, Dec 30, Jan 5th, Jan 12th surface hoar) ... or have a smaller avalanche 'step down' and trigger deeper instabilities.
Storm snow from the last week has consolidated into a slab 50-85cm in depth that is poorly bonded to the old surface due to a persistent buried weak layer. These slow to heal slabs are most likely to be triggered in wind exposed terrain.
Storm snow from the last week has consolidated into a slab 50-85cm in depth that is poorly bonded to the old surface due to a persistent buried weak layer. These slow to heal slabs are most likely to be triggered in wind exposed terrain.
A mix of persistent weak crystals lurk up to 120cm below the surface, and have the potential for surprisingly large avalanches. Conservative terrain selection remains critical for the foreseeable future.
A mix of persistent weak crystals lurk up to 150cm below the surface, and have the potential for surprisingly large avalanches. Conservative terrain selection remains critical for the foreseeable future.
A mix of persistent weak crystals lurk about 50-80 cm below the surface, and have the potential for surprisingly large avalanches. Conservative terrain selection remains critical for the foreseeable future.
The new snow will likely trigger large avalanches on a reactive weak layer buried 50-80 cm deep.
The new snow will also trigger large avalanches on a reactive weak layer buried over a metre deep.
The new snow will also trigger large avalanches on a reactive weak layer buried over a metre deep.
A persistent weak layer from late February is buried up to a metre deep and continues to show reactivity in snowpack tests. Potential still exists for a rider to directly trigger this layer or for a smaller wind slab avalanche to act as a trigger.
A persistent weak layer from late February is buried up to a metre deep and continues to show reactivity in snowpack tests. Potential still exists for a rider to directly trigger this layer or for a smaller wind slab avalanche to act as a trigger.
A persistent weak layer from late February is buried up to a metre deep and continues to show reactivity in snowpack tests. Potential still exists for a rider to directly trigger this layer or for a smaller wind slab avalanche to act as a trigger.
A persistent weak layer from late February is buried over a metre deep and it needs more time to fully heal into the snowpack. Potential still exists for a rider to directly trigger this layer or for a smaller wind slab avalanche to act as a trigger.
A persistent weak layer from late February is buried over a metre deep and it needs more time to fully heal into the snowpack. Potential still exists for a rider to directly trigger this layer or for a smaller wind slab or cornice to act as a trigger
A persistent weak layer from late February is buried about a metre deep is still reactive. Potential still exists for a rider to directly trigger this layer or for a smaller wind slab or cornice to act as a trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a small wind slab or cornice fall could act as a natural trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a small wind slab or cornice fall could act as a natural trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a small wind slab or cornice fall could act as a natural trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a small wind slab or cornice fall could act as a natural trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a small wind slab or cornice fall could act as a natural trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a small wind slab or cornice fall could act as a natural trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a small wind slab or cornice fall could act as a natural trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a small wind slab or cornice fall could act as a natural trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a storm slab or cornice fall could act as a trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a storm slab or cornice fall could act as a trigger.
A weak facet/crust layer from late February has produced several large human triggered avalanches the past few days. Triggering this layer is most likely in shallower areas, but a storm slab or cornice fall could act as a trigger.
A weak layer from February remains a concern. It produced several large human triggered avalanches last weekend, and may still react in shallow areas. Heavy loads such as a storm slab avalanche or a cornice fall are also possible triggers.
A weak layer from February remains a concern. It produced several large human triggered avalanches at the end of March, and may still react in shallow areas. Heavy loads such as a storm slab avalanche or a cornice fall are also possible triggers.
="s_3FE45715">A weak layer buried about 60 to 80 cm may become reactive with additional load and warming temperatures. Shallower slabs may step down to this layer and form large, destructive avalanches.
="s_3FE45715">A weak layer buried about 60 to 80 cm may become reactive with warming temperatures. Shallower slabs may step down to this layer and form large, destructive avalanches.
="s_3FE45715">A weak layer buried about 60-80 cm may become reactive with warming temperatures. Shallower slabs may step down to it and form large, destructive avalanches. This layer may have been involved in several large avalanches in Bear Pass area on Saturday.
="s_3FE45715">Weak layers buried 60-80 cm below the surface may be reactive in thin snowpack areas or triggered with heavy loads such as a smaller avalanche.
Buried weak layers in the snowpack have produced recent large avalanches in steep, unsupported terrain below treeline.
Buried weak layers in the snowpack have produced recent large avalanches in steep, unsupported terrain below treeline.
Buried weak layers in the snowpack have produced recent large avalanches in steep, unsupported terrain features at lower elevations.
Buried weak layers in the snowpack have produced recent large avalanches in steep, unsupported terrain features at lower elevations.
Buried weak layers in the snowpack have produced recent large avalanches in steep, unsupported terrain features.
Buried weak layers in the snowpack have produced recent large avalanches in steep, unsupported terrain features.
Buried weak layers in the snowpack have produced some recent large avalanches in steep, unsupported terrain. These layers may be sensitive under the weight of all the new snow.
Several weak layers in the upper snowpack have the potential to produce large avalanches. Sheltered treeline areas with preserved surface hoar are the most suspect for human triggering.
A weak layer buried 60 cm below the surface has potential for human triggering. Storm slab avalanches may also step down to this layer.
A weak layer buried 60-100 cm below the surface has potential for human triggering. Storm slab avalanches may also step down to this layer.
A weak layer exists 60-100 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, and storm slab avalanches could step down to this layer.
A weak layer exists 60-100 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, and storm slab avalanches could step down to this layer.
A weak layer exists 100-140 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, or for a storm slab release to step down to this layer resulting in a very large avalanche.
A weak layer exists 100-140 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, or for a storm slab release to step down to this layer resulting in a very large avalanche.
A weak layer exists 120-150 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, or for a storm slab release to step down to this layer resulting in a very large avalanche.
A weak layer exists 120-150 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, or for a storm slab release to step down to this layer resulting in a very large avalanche.
A weak layer exists 120-150 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, or for a storm slab release to step down to this layer resulting in a very large avalanche.
A weak layer exists 120-150 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, or for a storm slab release to step down to this layer resulting in a very large avalanche.
A weak layer exists 120-150 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, or for a storm slab release to step down to this layer resulting in a very large avalanche.
A weak layer exists 120-150 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, or for a storm slab release to step down to this layer resulting in a very large avalanche.
A weak layer exists 120-150 cm below the surface. It may still be possible for humans to trigger persistent slab avalanches on this layer, or for a storm slab release to step down to this layer resulting in a very large avalanche.
A weak layer exists 130-180 cm below the surface. It may still be possible for rapid loading from snow on wind to trigger this layer, or for a storm slab release to step down to this layer resulting in a very large avalanche.
Two weak layers are being monitored in the upper snowpack, surface hoar found about 25 cm deep as well as a crust at the base of our recent storm snow. These layers were active during the storm and remain an ongoing concern.
We have reports of a deeply buried layer of surface hoar becoming very reactive on shaded slopes at treeline and below in the Terrace area. Numerous large (size 2-3) persistent slabs have been remotely triggered, with slab depths of up to 60 cm.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">A weak surface hoar layer buried about 50 cm has produced large slab avalanches that have propagated widely.  It is best to avoid sheltered north to easterly slopes, where this layer is most likely to be a problem.</span><span class="s_AA239
="s_3FE45715">A weak surface hoar layer buried about 50 cm has produced large slab avalanches that have propagated widely. It is best to avoid sheltered north to easterly slopes, where this layer is most likely to be a problem.
="s_3FE45715">A weak surface hoar layer buried about 50 cm has produced large slab avalanches that have propagated widely. It is best to avoid sheltered north to easterly slopes, where this layer is most likely to be a problem.
="s_3FE45715">A weak surface hoar layer buried 50 to 90 cm has produced large slab avalanches that have propagated widely. It is best to avoid sheltered north to easterly slopes, where this layer is most likely to be a problem.
="s_3FE45715">Last week, a surface hoar layer buried 50-90 cm produced large slab avalanches that propagated widely. There's some uncertainty as to how long this layer will remain a problem, but it's best to avoid sheltered north-east slopes in the meantime.
="s_3FE45715">A buried surface hoar layer produced large slab avalanches at the end of March. There's some uncertainty as to how long this layer will remain a problem, but it's best to carefully evaluate sheltered north and east slopes.
="s_3FE45715">A buried surface hoar layer produced large slab avalanches at the end of March. There's some uncertainty as to how long this layer will remain a problem, but it's best to carefully evaluate sheltered north and east slopes.
A substantial amount of recent snow has loaded two layers of weak, faceted snow: one is buried around 50 cm and the other near the base of the snowpack. Likely trigger points are unsupported (convex) slopes in shallower snowpack areas.
The new snow will load several layers of weak faceted snow including a layer buried 50 cm deep and another layer near the base of the snowpack. Likely trigger points are unsupported (convex) slopes in shallower snowpack areas.
The new snow is loading several layers of weak faceted snow including a layer buried 50 cm deep and another layer near the base of the snowpack. Likely trigger points are unsupported (convex) slopes in shallower snowpack areas.
40-60 cm of recent snow sits above a weak, faceted lower snowpack. Triggering persistent slabs will become more likely with loading from new snow and wind. Likely trigger points are unsupported slopes in shallower snowpack areas.
A reactive slab has possibly formed above a weak layer of crusts, facets, and surface hoar that formed in February.
A reactive slab has possibly formed above a weak layer of crusts, facets, and surface hoar that formed in February.
A 20-60 cm thick slab above a rain crust has been reactive to human triggers over the past week. Most activity has been in wind-affected terrain. Persistent slabs also have the potential to step down to deep basal weaknesses near the ground.
A 20-60 cm thick slab above a rain crust has been reactive to human triggers over the past week. Most activity has been in wind-affected terrain. Persistent slabs also have the potential to step down to deep basal weaknesses near the ground.
A 20-60 cm thick slab above a rain crust has been reactive to human triggers over the past week. Most activity has been in wind-affected terrain. Persistent slabs also have the potential to step down to deep basal weaknesses near the ground.
A 20-60 cm thick slab above a rain crust has been reactive to human triggers over the past week. Most activity has been in wind-affected terrain. Persistent slabs also have the potential to step down to deep basal weaknesses near the ground.
A 20-60 cm thick slab above a rain crust has been reactive to human triggers over the past week. Most activity has been in wind-affected terrain. Persistent slabs also have the potential to step down to deep basal weaknesses near the ground.
A 20-60 cm thick slab above a rain crust has been reactive to human triggers over the past week. Most activity has been in wind-affected terrain. Persistent slabs also have the potential to step down to deep basal weaknesses near the ground.
A 20-60 cm thick slab above a rain crust has been reactive to human triggers. Most activity has been in wind-affected terrain. Persistent slabs also have the potential to step down to deep basal weaknesses near the ground.
There's some signs to suggest a reactive slab has finally developed above weak layers in the top 50 cm of the snowpack. Thin areas and convexities are most suspect.
There are signs that suggest a reactive slab has finally developed above weak layers in the top 50 cm of the snowpack. It's still early to be certain, but persistent slab problems should be on your radar. Thin areas and convexities are most suspect.
There are signs that suggest a reactive slab has finally developed above weak layers in the top 50 cm of the snowpack. It's still early to be certain, but persistent slab problems should be on your radar. Thin areas and convexities are most suspect.
Recent reports have shown touchy persistent slab conditions developing at lower elevations in deeper snowpack areas of the region. Avoid the trap of lowering your guard below treeline - especially around steep rolls in sheltered openings.
Recent reports have shown touchy persistent slab conditions developing at lower elevations in deeper snowpack areas of the region. Avoid the trap of lowering your guard below treeline - especially around steep rolls in sheltered openings.
Recent reports have shown touchy persistent slab conditions developing at lower elevations in deeper snowpack areas of the region. Avoid the trap of lowering your guard below treeline - especially around steep rolls in sheltered openings.
Weak layers buried in the snowpack have produced recent avalanches with very light triggers particularly on unsupported features at lower elevations.
Weak layers buried in the snowpack have produced recent avalanches with very light triggers particularly on unsupported features at treeline and below.
Weak layers buried in the snowpack have produced recent avalanches with very light triggers particularly on unsupported features at treeline and below.
Weak layers buried in the snowpack have produced recent avalanches with very light triggers particularly on unsupported features at lower elevations.
Weak layers buried in the snowpack have produced recent avalanches with very light triggers particularly on unsupported features at lower elevations.
Weak layers buried 30-80 cm below the surface have produced some recent avalanches, particularly on unsupported features.
There is limited information about weak layers buried 30-80 cm below the surface. They produced a few avalanches earlier this week, and may still be reactive. Carefully assess the snowpack and terrain in your local area.
There is limited information about weak layers buried 30-80 cm below the surface. They produced a few large avalanches last week, and may become more reactive with ongoing loading.
There is limited information about weak layers buried 30-80 cm below the surface. They produced a few large avalanches last week, and may remain sensitive to human triggering.
There is limited information about weak layers buried 60-100 cm below the surface. They produced a few large avalanches last week, and may remain sensitive to human triggering in shallow snowpack areas.
There is limited information about weak layers buried 60-100 cm below the surface. They produced a few large avalanches last week, and may remain sensitive to human triggering in shallow snowpack areas.
There is limited information about weak layers buried 80-120 cm below the surface. They produced a few large avalanches last week, and may remain sensitive to human triggering in shallow snowpack areas.
Weak layers buried 100-150 cm below the surface have been reactive in recent snowpack tests and have also produced a few large avalanches last week. These&nbsp; layers may remain sensitive to human triggering in shallow snowpack areas.
Weak layers buried 100-150 cm below the surface have been reactive in recent snowpack tests and have also produced a few large avalanches last week. These layers may remain sensitive to human triggering in shallow snowpack areas.
Weak layers buried 100-150 cm below the surface have been reactive in recent snowpack tests and have also produced a few large avalanches recently. These layers may remain sensitive to human triggering in shallow snowpack areas.
Weak layers buried 100-150 cm below the surface have been reactive in recent snowpack tests and have also produced a few large avalanches recently. These layers may remain sensitive to human triggering in shallow snowpack areas.
Weak layers buried 100-150 cm below the surface have been reactive in snowpack tests and have also produced a few large avalanches recently. These layers may remain sensitive to human triggering in shallow snowpack areas.
Weak layers buried 100-150 cm below the surface have been reactive in snowpack tests and have also produced a few large avalanches recently. These layers may remain sensitive to human triggering in shallow snowpack areas.
Weak layers buried 100-150 cm below the surface have been reactive in snowpack tests and have also produced a few large avalanches recently. These layers may remain sensitive to human triggering in shallow snowpack areas.
Weak layers buried 100-150 cm below the surface have been reactive in snowpack tests and have also produced a few large avalanches recently. These layers may remain sensitive to human triggering in shallow snowpack areas.
Weak layers buried 100-150 cm below the surface have been reactive in snowpack tests and have also produced a few large avalanches recently. These layers may also remain sensitive to human triggering in shallow snowpack areas.
Weak layers buried 100-150 cm below the surface have been reactive in snowpack tests and have also produced a few large avalanches recently. These layers may also remain sensitive to human triggering in shallow snowpack areas.
="s_3FE45715">Several weak layers are lurking in our snowpack. They will be more easily triggered where the snowpack is shallow.
="s_3FE45715">Several weak layers are lurking in our snowpack. They will be more easily triggered where the snowpack is shallow.
Buried weak layers are most likely to be triggered from thin or variable depth snowpack areas; or with a large load like a cornice fall.
Buried weak layers are most likely to be triggered from thin or variable depth snowpack areas; or with a large load like a cornice fall.
Buried weak layers are most likely to be triggered from thin or variable depth snowpack areas; or with a large load like a cornice fall.
Buried weak layers are most likely to be triggered from thin or variable depth snowpack areas; or with a large load like a cornice fall.
Buried weak layers are most likely to be triggered from thin or variable depth snowpack areas; or with a large load like a cornice fall.
Buried weak layers are most likely to be triggered from thin or variable depth snowpack areas; or with a large load like a cornice fall.
="s_3FE45715">We have no current information on the status of weak layers that were reactive last week. It may still be possible to trigger large avalanches on layers of surface hoar, crusts, or facets buried roughly 50 cm below the surface.
="s_3FE45715">This layer may become active as facets form on the crust and the snow load increases. Smaller avalanches may &quot;step-down&quot; to this layer.
="s_3FE45715">The mid-November crust is typically down 80-150cm. This appears to be a very isolated problem at the moment but could have major consequences if triggered. The biggest concerns are smaller avalanches stepping down or triggering from a thin area.
A weak layer buried mid-December now lies up to 75cm below the surface and has the potential for large avalanches. It's a tricky one to manage as it's not a problem in all areas. If in doubt, err on the side of caution and to stick to mellow terrain.
A weak layer buried mid-December now lies up to 90cm below the surface and has the potential for large avalanches. It's a tricky one to manage as it's not a problem in all areas. If in doubt, err on the side of caution and to stick to mellow terrain.
A weak layer buried in mid-December has generated some isolated reports of large avalanches. Spotty patches of surface hoar have made it difficult to pinpoint where this layer might react but thin snowpack areas are the most likely.
A weak layer buried in mid-December has generated some reports of large avalanches. Spotty patches of surface hoar have made it difficult to pinpoint where this layer might react but thin snowpack areas in the eastern Selkirks are the most likely.
A weak layer buried in mid-December has produced large avalanches. Spotty patches of surface hoar have made it difficult to pinpoint where this layer might react. Thin snowpack areas in the north and east parts of the region are the most likely.
A weak layer buried in mid-December has produced large avalanches. Triggering this layer is more probably in parts of the region with thinner snowpacks like the north Monashees and east Selkriks.
="s_3FE45715">A weak layer from early February down 50-80 cm remains reactive to human triggering in isolated areas. Smaller avalanches have the potential to step down to this layer.</span><span class="s_3FE45
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 60-90 cm remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">A persistent weakness down 60-90 cm remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
="s_3FE45715">In the north of the region near Valemount, a persistent weakness down 60-90 cm remains sensitive to light triggers. Smaller avalanches have the potential to step down to this layer.
Areas that have a buried melt-freeze crust and/or facets beneath the recent storm slab may continue to be easy to trigger, and fractures may propagate long distances in the persistent weak layer.
Several persistent weaknesses in the upper snowpack remain a concern, as there is step-down potential the propensity to propagate slab fractures into large and dangerous avalanches.
Several persistent weaknesses in the upper snowpack remain a concern, as there is step-down potential the propensity to propagate slab fractures into large and dangerous avalanches.
Several persistent weaknesses in the upper snowpack remain a concern, as there is step-down potential the propensity to propagate slab fractures into large and dangerous avalanches.
Several persistent weaknesses in the upper snowpack remain a concern, as there is step-down potential the propensity to propagate slab fractures into large and dangerous avalanches.
Several persistent weaknesses in the upper snowpack remain a concern, and there is step-down potential for slab fractures propagating and resulting in large and dangerous avalanches.
Several persistent weaknesses in the upper snowpack remain a concern, and there is step-down potential for slab fractures propagating and resulting in large and dangerous avalanches.
Several persistent weaknesses in the upper snowpack remain a concern, and there is step-down potential for slab fractures propagating and resulting in large and dangerous avalanches.
Several persistent weaknesses in the upper snowpack remain a concern, and there is step-down potential for slab fractures propagating and resulting in large and dangerous avalanches.
Several persistent weaknesses in the upper snowpack remain a concern. There is step-down potential resulting in large and dangerous avalanches.
Several persistent weaknesses in the upper snowpack remain a concern. There is step-down potential resulting in large and dangerous avalanches.
Several persistent weaknesses in the upper snowpack remain a concern. There is step-down potential resulting in large and dangerous avalanches.
Several persistent weaknesses in the snowpack remain a concern. There is step-down potential resulting in large and dangerous avalanches.
Several persistent weaknesses in the snowpack remain a concern. There is step-down potential resulting in large and dangerous avalanches.
Several persistent weaknesses in the snowpack remain a concern. There is step-down potential resulting in large and dangerous avalanches.
="s_DDF6C5E8">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or even a cornice failure will increase the likelihood of triggering these layers.
="s_3FE45715">Various persistent weaknesses throughout the snowpack create the potential for large step down avalanches. Sustained sun exposure or heavy triggers like a cornice fall could trigger a deep and destructive avalanche.
="s_3FE45715">Various persistent weaknesses throughout the snowpack create the potential for large avalanches stepping down to buried weak layers. Sustained sun exposure or heavy triggers like a cornice fall could trigger deep, destructive avalanches.</span><span class="s_3FE45
Expect persistent slabs to be become more reactive as recent new snow settles into a slab. Likely spots are sheltered open areas at and below tree line or sheltered northerly aspects in the alpine.
Expect persistent slabs to be become more reactive as recent new snow settles into a slab. Likely spots are sheltered open areas at and below tree line or sheltered northerly aspects in the alpine.
Reactivity at the buried December 15 interface will likely be greater where the new snow has settled into a cohesive slab above buried surface hoar. Use extra caution in wind affected areas and around steeper, sheltered slopes at treeline and below.
">The December 15 interface will likely be most reactive where the new snow has settled into a slab over buried surface hoar. Use extra caution around steeper, sheltered slopes at treeline and below - especially if you see signs of slab formation.
="s_3FE45715">The December 15 interface will likely be most reactive where the new snow has settled into a slab over buried surface hoar. Use extra caution around steeper, sheltered slopes at treeline and below - especially if you see signs of slab formation.
">A weak layer of surface hoar buried 30-50 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab. The greatest caution is needed around steeper, sheltered slopes at treeline and below.
="s_3FE45715">A weak layer of surface hoar buried 30-50 cm deep has potential to produce large avalanches in areas where the overlying snow has settled into a cohesive slab. The greatest caution is needed around steeper, sheltered slopes at treeline and below.
="s_3FE45715">A weak layer of surface hoar buried 30-50 cm deep has potential to be reactive in areas where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 30-50 cm deep has potential to be reactive in areas where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 30-50 cm deep has potential to be reactive in areas where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 50-80 cm deep has potential to be reactive in areas where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 50-80 cm deep has potential to be reactive in areas where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 50-80 cm deep has potential to be reactive in areas where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 50-80 cm deep has potential to be reactive in areas where the overlying snow has settled into a cohesive slab.
="s_3FE45715">Warming, particularly at treeline elevations, could turn powder into slabs which can fail on persistent weak layers.
="s_3FE45715">Around 50 to 70 cm of snow sits above a touchy weak layer.  As this snow settles and gains slab properties, a dangerous slab that is easily triggered will likely form.</span><span class="s_3FE45
="s_3FE45715">Around 50 to 70 cm of snow sits above a touchy weak layer.  As this snow settles and gains slab properties, a dangerous slab that is easily triggered will likely form.</span><span class="s_3FE45
="s_3FE45715">Around 40 to 80 cm of snow sits above two weak layers. As this snow continues to settle and gains slab properties, a dangerous slab that is easily triggered may form.
="s_3FE45715">Around 40 to 80 cm of snow sits above two weak layers. As this snow continues to settle and gains slab properties, a dangerous slab that is easily triggered may form. Shallower storm slabs could step down to this layer.
="s_3FE45715">Skier traffic has triggered large avalanches on this layer, which is buried around 40 to 80 cm in the snowpack. Shallower storm slabs could step down to this layer.&nbsp; If triggered, this layer could produce large, destructive avalanches that run far.
="s_3FE45715">Skier traffic has triggered large avalanches on this layer, which is buried around 50 to 80 cm in the snowpack. Shallower storm slabs could step down to this layer. If triggered, this layer could produce large, destructive avalanches that run far.
="s_3FE45715">Light triggers have released large avalanches on this layer, which is buried around 50 to 80 cm in the snowpack. Shallower storm slabs could step down to this layer. When triggered, this layer is producing large, destructive avalanches that run far.
="s_3FE45715">Light triggers have released large avalanches on this layer, which is buried around 50 to 100 cm deep in the snowpack. Storm slabs are regularly stepping down to this layer. When triggered, it is producing large, destructive avalanches that run far.
="s_3FE45715">Light triggers have released large avalanches on this layer, which is buried around 50 to 100 cm deep in the snowpack. Storm slabs are regularly stepping down to this layer. When triggered, it is producing large, destructive avalanches.
="s_3FE45715">Our complex snowpack is currently producing very large and destructive avalanches on weak layers buried up to 100 cm below the surface. Expert level knowledge and significant experience is required to venture into the backcountry at this time.
="s_3FE45715">Warm alpine temperatures and direct solar input Sunday produced very large natural avalanches and that activity is expected again Monday.  Avoid avalanche terrain, especially in the alpine, as the snowpack adjusts to recent loading and warmth.
="s_3FE45715">Alpine temperatures are expected to remain warm Monday night and above freezing temperatures are expected between valley bottom and 1000 m Tuesday, which may increase the likelihood of human triggered avalanches in unusual locations at low elevation.
="s_3FE45715">As new snow begins to fall we can't forget about the persistent weak layers lurking in our snowpack that continue to produce large human triggered avalanches. Keep the terrain choices reigned in as the snowpack adjusts to the new load.
="s_3FE45715">As new snow begins to stack up we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reigned in as the snowpack adjusts to the new load.
="s_3FE45715">The riding conditions may be great, but we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">The riding conditions may be great, but we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.</span><span class="s_3FE45
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches at all elevations. Below treeline, be cautious in open features, such as cutblocks and gullies.
="s_3FE45715">Three weak layers are lurking in our snowpack, which have produced very large avalanches. Use extreme caution in openings below treeline (such as cutblocks) and sheltered areas in the alpine and treeline, where weak layers may be preserved.</span><span class="s_3FE45
="s_3FE45715">Three weak layers are lurking in our snowpack that continue to produce very large avalanches. Use extreme caution in areas where weak layers may be preserved, such as in openings below treeline, and sheltered areas in the alpine and treeline.
="s_3FE45715">Three weak layers are lurking in our snowpack that continue to produce very large avalanches. Use extreme caution in areas where weak layers may be preserved, such as in openings below treeline, and sheltered areas in the alpine and treeline.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">As we move out of a major storm and avalanche cycle there is a lot of uncertainty surrounding the triggerability of our deeply buried persistent weak layers.  When we don't know, we have to scale our terrain choices accordingly. 
="s_3FE45715">Several deeply buried weak layers are persisting in the snowpack and continue to produce very large avalanches, especially with heavy triggers. This is a time to carefully measure your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several deeply buried weak layers are persisting in the snowpack and continue to produce very large avalanches, especially with heavy triggers. This is a time to carefully measure your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several deeply buried weak layers are persisting in the snowpack and continue to produce very large avalanches, especially with heavy triggers. This is a time to carefully measure your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several deeply buried persistent weak layers continue to produce very large avalanches. Triggering any one of these layers has very high consequences. This is a time to carefully limit your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several weak layers are lurking in our snowpack, which continue to produce very large avalanches that propagate far, with high consequences.  Limit your exposure to avalanche terrain and avoid overhead hazards.</span><span class="s_3FE45
="s_3FE45715">Several weak layers are lurking in our snowpack, which are producing very large avalanches that propagate far, with high consequences. Rapid snowfall loading will increase the likelihood of triggering them.
="s_3FE45715">Several weak layers are lurking in our snowpack, which are producing very large avalanches that propagate far, with high consequences.  Snowfall is rapidly loading these layers, increasing the likelihood of triggering them.</span><span class="s_3FE45
="s_3FE45715">Several unstable weak layers are lurking deep in our snowpack. These layers have the potential to be triggered both naturally and with skier or rider traffic. When triggered, these layers have been producing very large avalanches that can run far.
="s_3FE45715">Several unstable weak layers are lurking deep in our snowpack. These layers have the potential to be triggered both naturally and with skier or rider traffic. When triggered, these layers have been producing very large avalanches that run far.
Several troublesome layers are producing very large, destructive avalanches. These could be triggered by the weight of a person or snowmobile, or a surface avalanche.
="s_3FE45715">Several troublesome layers exist in the snowpack. Although the likelihood of triggering a persistent slab has gone down, the consequences remain very high.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Buried weak layers exist in the snowpack and may be reactive to large triggers such as a cornice or step-down from a wind slab release. Human triggering may also be possible in shallow or thin, rocky areas.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Buried weak layers exist in the snowpack and may be reactive to large triggers such as a cornice or step-down from a wind slab release. Human triggering may also be possible from shallow or thin. rocky, unsupported terrain</span><span class="s_E6FD2046">.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">An interface buried up to 70cm deep has &quot;woken-up&quot; with recent snow loading, and a few large avalanches have been triggered easily. Observations have been limited, but this problem seems most reactive in south-facing terrain where buried crusts exist</span><span class="s_E6FD2
="s_3FE45715">An interface buried up to 70cm deep has &quot;woken-up&quot; with recent snow loading, and a few large avalanches have been triggered easily. Observations have been limited, but this problem seems most reactive in south-facing terrain where buried crusts exist
="s_3FE45715">An interface buried up to 70cm deep has &quot;woken-up&quot; with recent snow loading, and a few large avalanches have been triggered easily. Observations have been limited, but this problem seems most reactive in south-facing terrain where buried crusts exist
="s_3FE45715">An interface buried up to 70cm deep has &quot;woken-up&quot; with recent snow loading, and a few large avalanches have been triggered easily. Observations have been limited, but this problem seems most reactive in south-facing terrain where buried crusts exist
="s_3FE45715">A weak layer buried up to 80cm deep &quot;woke-up&quot; last week. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">A weak layer buried up to 80cm deep &quot;woke-up&quot; last week. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">A weak layer buried up to 80cm deep &quot;woke-up&quot; last week. This problem seems most reactive in south-facing terrain where buried crusts exist.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot. Solar warming could make the slab easier to trigger too.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot. Solar warming could also wake up these sleeping beasts.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot. Solar warming could also wake up these sleeping beasts.
="s_3FE45715">Rising temperatures and strong sunshine are increasing concern for weak layers buried deep in the snowpack. In addition to human triggering in thin spots, solar warming and cornice releases are possible natural triggers for persistent slabs.
="s_3FE45715">Rising temperatures and strong sunshine are increasing concern for weak layers buried deep in the snowpack. In addition to human triggering in thin spots, solar warming and cornice releases are possible natural triggers for persistent slabs.
="s_3FE45715">Rising temperatures and strong sunshine are increasing concern for weak layers buried deep in the snowpack. In addition to human triggering in thin spots, solar warming and cornice releases are possible natural triggers for persistent slabs.
="s_3FE45715">Our mid-March weak layer of crust and surface hoar has been buried by up to 90 cm of storm snow and has shown prolonged reactivity since the last storm. Manage the uncertainty around triggering this layer by sticking to lower angle, supported slopes.
="s_3FE45715">Weak layers of crust and surface hoar from last month are now buried up to 90 cm deep and have shown prolonged reactivity since the last storm. Manage the uncertainty around triggering these layers by sticking to lower angle, supported slopes.
="s_3FE45715">Weak layers of crust and surface hoar from last month are now buried up to 90 cm deep and have shown prolonged reactivity since the last storm. Manage the uncertainty around triggering these layers by sticking to lower angle, supported slopes.
="s_3FE45715">Buried persistent weak layers 60 to 110 cm below the surface may roar back to life Tuesday as rain, strong warm wind, and a rapidly rising freezing level destabilize the upper snowpack. Cornice failure is also expected to be widespread Tuesday.
A weak layer buried mid-December now lies up to 70cm below the surface and has the potential for large avalanches. It's a tricky one to manage as it's not a problem in all areas. If in doubt, err on the side of caution and to stick to mellow terrain.
A weak layer buried mid-December now lies up to 80cm below the surface and has the potential for large avalanches. It's a tricky one to manage as it's not a problem in all areas. If in doubt, err on the side of caution and to stick to mellow terrain.
A mid-December weak layer has generated some isolated reports of large avalanches in the Columbia mountains to the south. This layer exists in the Cariboos as well, and may be easier to trigger in thin snowpack areas on the eastern edge of the range.
A mid-December weak layer has generated some isolated reports of large avalanches in the Columbia mountains to the south. This layer exists in the Cariboos as well, and may be easier to trigger in thin snowpack areas on the eastern edge of the range.
A mid-December weak layer has generated some isolated reports of large avalanches in the Columbia Mountains to the south. This layer exists in the Cariboos as well, and may be easier to trigger in thin snowpack areas on the eastern edge of the range.
50-100 cm of snow sits above a weak layer of facets from mid-December and continues to be reactive in parts of the region that have thinner snowpacks.
50-100 cm of snow sits above a weak layer of facets from mid-December and has recently been reactive in parts of the region with thin snowpacks. Winds slabs may also step down and trigger this layer.
A weak layer of facets from mid-December is buried 50-100 cm deep and has recently been reactive in parts of the region with thin snowpacks.
Triggering a weak layer of facets may still be possible in parts of the region with thin snowpacks. Dig down and test for weak layers before committing to any steep slope.
Triggering a weak layer of facets and/or surface hoar buried mid-December may still be possible in parts of the region where the snowpack is shallower. Dig down and test for weaknesses before committing to any big open steep slope.
Triggering a weak layer of facets and/or surface hoar buried mid-December may still be possible in parts of the region where the snowpack is shallower. Dig down and test for weaknesses before committing to any big open steep slope.
Triggering a weak layer of facets and/or surface hoar buried mid-December may still be possible in parts of the region where the snowpack is shallower. Dig down and test for weaknesses before committing to any big open steep slope.
Triggering a weak layer of facets and/or surface hoar buried mid-December may still be possible in parts of the region where the snowpack is shallower. Dig down and test for weaknesses before committing to larger terrain features.
Triggering a weak layer of facets and/or surface hoar buried mid-December may still be possible in parts of the region where the snowpack is shallower. Dig down and test for weaknesses before committing to larger terrain features.
Triggering a weak layer of facets and/or surface hoar buried mid-December may still be possible in parts of the region where the snowpack is shallower. Dig down and test for weaknesses before committing to larger terrain features.
Triggering a weak layer of facets and/or surface hoar buried mid-December may still be possible in parts of the region where the snowpack is shallower. Dig down and test for weaknesses before committing to larger terrain features.
New loading combined with warming may allow for triggering an avalanche on facets buried in mid-December
Recent new snow combined with warmer temperatures may have increased the load to a critical level over facets and/or surface hoar buried in mid-December
Recent storm loading combined with warmer temperatures has woken up the mid-December weak layer and several large persistent slab avalanches have been reported in the last couple days.
Recent storm loading combined with warmer temperatures has woken up the mid-December weak layer and several large persistent slab avalanches have been reported in the last couple days.
Recent storm loading combined with warmer temperatures has woken up the mid-December weak layer and several large persistent slab avalanches have been reported in the last couple days.
The mid-December facet layer has become reactive and several large persistent slab avalanches were human-triggered in the last couple of days. Even if the surface snow gains strength, deeper weak layers can surprise with nasty consequences.
The mid-December facet layer has become reactive and several large persistent slab avalanches were human-triggered in the last couple of days. Even if the surface snow gains strength, deeper weak layers can surprise with nasty consequences.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials over the past couple of days. These deeper weaknesses can with nasty consequences.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials over the past couple of days. These deeper weaknesses can with nasty consequences.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials over the past couple of days. These deeper weaknesses can with nasty consequences.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials over the past week. These deeper weaknesses can still be triggered with nasty consequences.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials last week. These deeper weaknesses can still be triggered with nasty consequences.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials last week. These deeper weaknesses can still be triggered with nasty consequences.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials last week. These deeper weaknesses can still be triggered with nasty consequences.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials last week. These deeper weaknesses can still be triggered with nasty consequences.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials last week. These deeper weaknesses can still be triggered with nasty consequences.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials last week. These deeper weaknesses will be slow to heal and need to be considered in your terrain selection.
The persistent weakness buried mid-December has been responsible for several large human-triggered slab avalanches and subsequent burials in late January. These deeper weaknesses will be slow to heal and must be considered in your terrain selection.
A persistent weakness buried in mid-December was responsible for several large human-triggered avalanches in late January. Another weakness buried in mid-January produced a remotely triggered avalanche within the last week.
A persistent weakness buried in mid-December was responsible for several large human-triggered avalanches in late January. Another weakness buried in mid-January produced a remotely triggered avalanche within the last week.
A persistent weakness buried in mid-December was responsible for several large human-triggered avalanches in late January. Another weakness buried in mid-January produced a remotely triggered avalanche within the last week.
A persistent weakness buried in mid-December was responsible for several large human-triggered avalanches in late January. Another weakness buried in mid-January produced a remotely triggered avalanche within the last week.
Persistent slab problems may be back in play with the new load that has been added to the snowpack and the upcoming warming. Stick to supported terrain and exercise extra caution where the new snow lies over a previously shallow snowpack.
Persistent slab problems may be back in play with the new load that has been added to the snowpack and the upcoming warming. Stick to supported terrain and exercise extra caution where the new snow lies over a previously shallow snowpack.
Persistent slab problems may be back in play with the new load that has been added to the snowpack and the current warming and sun. Stick to supported terrain and exercise extra caution where the new snow lies over a previously shallow snowpack.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">A weak layer from early February down 40-70 cm remains reactive to human triggering in isolated areas. Deeper weak layers in the snowpack also have the potential to wake up this week and very large avalanches are possible in isolated areas.&nbsp; </span><span class="s_AA239
="s_3FE45715">A persistent weakness down 40-70 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
="s_3FE45715">A persistent weakness down 40-70 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
="s_3FE45715">A persistent weakness down 40-70 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
="s_3FE45715">A persistent weakness down 40-70 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
="s_3FE45715">A persistent weakness down 40-70 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
="s_3FE45715">A persistent weakness down 40-70 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
="s_3FE45715">A persistent weakness down 40-70 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
="s_3FE45715">A persistent weakness down 40-70 cm remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this and deeper persistent weakness resulting very large avalanches.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. The risk of triggering a deeper weak layer will be heightened while overlying storm slabs remain sensitive to human triggering.
="s_3FE45715">Persistent weakness layered throughout the snowpack create the potential for very large step-down avalanches. Heavy loads such as a smaller storm/wind slab avalanche or even a cornice failure will increase the likelihood of triggering these layers.
="s_3FE45715">Various persistent weaknesses throughout the snowpack create the potential for large step down avalanches. Sustained sun exposure or heavy triggers like a cornice fall could trigger a deep and destructive avalanche.
Expect persistent slabs to be become more reactive as recent new snow settles into a slab. Likely spots are sheltered open areas at and below tree line or sheltered northerly aspects in the alpine.
Reactivity at the buried December 15 interface will likely be greater where the new snow has settled into a cohesive slab above buried surface hoar. Use extra caution in wind affected areas and around steeper, sheltered slopes at treeline and below.
The December 15 interface will likely be most reactive where the new snow has settled into a slab over buried surface hoar. Use extra caution around steeper, sheltered slopes at treeline and below - especially if you see signs of slab formation.
The December 15 interface will likely be most reactive where the new snow has settled into a slab over buried surface hoar. Use extra caution around steeper, sheltered slopes at treeline and below - especially if you see signs of slab formation.
">A weak layer of surface hoar buried 20-40 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab. The greatest caution is needed around steeper, sheltered slopes at treeline and below.
="s_3FE45715">A weak layer of surface hoar buried 20-40 cm deep has potential to produce large avalanches where the overlying snow has settled into a cohesive slab. The greatest caution is needed around steeper, sheltered slopes at treeline and below.
="s_3FE45715">A weak layer of surface hoar buried 20-40 cm deep has potential to be reactive where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 20-40 cm deep has potential to be reactive where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 20-40 cm deep has potential to be reactive where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 30-50 cm deep has potential to be reactive where the overlying snow has settled into a cohesive slab.
="s_3FE45715">A weak layer of surface hoar buried 30-50 cm deep has potential to be reactive where the overlying snow has settled into a cohesive slab.
="s_3FE45715">Warmer weather is expected to make the upper snow more dense, increasing the likelihood of triggering a weak layer buried 30-50 cm below the surface.
="s_3FE45715">Around 30 to 60 cm of snow sits above a touchy weak layer. As this snow settles and becomes more cohesive, a dangerous slab that is easily triggered will likely form.
="s_3FE45715">Around 30 to 60 cm of snow sits above a touchy weak layer. As this snow settles and gains slab properties, a dangerous slab that is easily triggered will likely form.
="s_3FE45715">Around 30 to 60 cm of snow sits above a touchy weak layer. As this snow continues to settle and gains slab properties, a dangerous slab that is easily triggered may form.
="s_3FE45715">Around 30 to 60 cm of snow sits above a touchy weak layer. As this snow continues to settle and gains slab properties, a dangerous slab that is easily triggered may form. Shallower storm slabs could step down to this layer.
="s_3FE45715">Around 40 to 70 cm of snow sits above a touchy weak layer. As this snow continues to settle and gains slab properties, a dangerous slab that is easily triggered may form. Shallower storm slabs could step down to this layer.
="s_3FE45715">A weak layer buried 40-70 cm deep is becoming increasingly reactive in many areas of the BC interior. This layer has produced numerous large avalanches and is becoming a greater concern in the Cariboos as well - especially in the south of the region.
="s_3FE45715">A weak layer buried 40-70 cm deep is becoming increasingly reactive in many areas of the BC interior. This layer has produced numerous large avalanches and is an increasing concern in the Cariboos - especially in the south of the region.
="s_3FE45715">A weak layer buried 40-70 cm deep is becoming increasingly reactive in many areas of the BC interior. This layer has produced numerous large avalanches and is an increasing concern in the Cariboos - especially in the south of the region.
="s_3FE45715">A weak layer buried 40-70 cm deep is becoming increasingly reactive in many areas of the BC interior. This layer has produced numerous large avalanches and is an increasing concern in the Cariboos - especially in the south of the region.
="s_3FE45715">A volatile buried weak layer is becoming increasingly reactive. This layer has produced numerous large destructive avalanches and is especially concerning in the southern Cariboos.
="s_3FE45715">Three distinct persistent weak layers in our snowpack have produced numerous large human triggered and natural avalanches over the last few days. Continued warm temperatures Monday may allow for ongoing natural avalanche activity at upper elevations.
="s_3FE45715">Alpine temperatures are expected to remain warm Monday night and above freezing temperatures are expected between valley bottom and 1500 m Tuesday, which may increase the likelihood of human triggered avalanches in unusual locations at low elevation.
="s_3FE45715">As new snow begins to fall we can't forget about the persistent weak layers lurking in our snowpack that remain capable of producing large avalanches. Keep the terrain choices reigned in as the snowpack adjusts to the new load.
="s_3FE45715">As new snow begins to stack up we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reigned in as the snowpack adjusts to the new load.
="s_3FE45715">The riding conditions may be great, but we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">The riding conditions may be great, but we can't forget about the persistent weak layers lurking in our snowpack that remain quite capable of producing very large avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which remain capable of producing very large and destructive avalanches. Keep the terrain choices reined in as the snowpack adjusts to the new load.
="s_3FE45715">Three persistent weak layers are lurking in our snowpack, which are capable of producing very large and destructive avalanches at all elevations. Below treeline, be cautious in cutblocks and gullies.  The snowpack needs time to adjust to recent load.</span><span class="s_3FE45
="s_3FE45715">Three weak layers are lurking in our snowpack, which have produced very large avalanches. Use extreme caution in openings below treeline (such as cutblocks) and sheltered areas in the alpine and treeline, where weak layers may be preserved.</span><span class="s_3FE45
="s_3FE45715">Three weak layers are lurking in our snowpack that have produced very large avalanches. Use extreme caution in areas where these weak layers may be preserved, such as in openings below treeline as well as sheltered areas in the alpine and treeline.
="s_3FE45715">Three weak layers are lurking in our snowpack that have produced very large avalanches. Using a conservative approach and sticking to moderate terrain are good choices.
Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
Several weak layers are buried in the snowpack, creating very large avalanches when triggered.
="s_3FE45715">As we move out of a storm and avalanche cycle there is a lot of uncertainty surrounding the triggerability of our deeply buried persistent weak layers. When we don't know, we have to scale our terrain choices accordingly.
="s_3FE45715">Several deeply buried weak layers are persisting in the snowpack and continue to produce very large avalanches, especially with heavy triggers. This is a time to carefully measure your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several deeply buried weak layers are persisting in the snowpack and continue to produce very large avalanches, especially with heavy triggers. This is a time to carefully measure your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several deeply buried weak layers are persisting in the snowpack and continue to produce very large avalanches - especially with heavy triggers. This is a time to carefully measure your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several deeply buried persistent weak layers continue to produce very large avalanches. Triggering any one of these layers has very high consequences. This is a time to carefully limit your exposure to avalanche terrain and to avoid overhead hazards.
="s_3FE45715">Several weak layers are lurking in our snowpack, which are producing very large avalanches that propagate far, with high consequences.  Use caution in openings below treeline and sheltered areas at treeline and above, where weak layers are preserved.</span><span class="s_3FE45
="s_3FE45715">Several weak layers are lurking in our snowpack, which are producing very large avalanches that propagate far, with high consequences. Rapid snowfall will load these layers, increasing the likelihood of triggering them.
="s_3FE45715">Several weak layers are lurking in our snowpack, which are producing very large avalanches that propagate far, with high consequences. Snowfall is rapidly loading these layers, increasing the likelihood of triggering them.
="s_3FE45715">Several unstable weak layers are lurking deep in our snowpack. These layers have the potential to be triggered both naturally and with skier or rider traffic. When triggered, these layers have been producing very large avalanches that can run far.
="s_3FE45715">Several unstable weak layers are lurking deep in our snowpack. These layers have the potential to be triggered both naturally and with skier or rider traffic. When triggered, these layers have been producing very large avalanches that run far.
="s_3FE45715">Several troublesome layers are producing very large, destructive avalanches. These could be triggered by the weight of a person or snowmobile, or a surface avalanche.
="s_3FE45715">Several troublesome layers exist in the snowpack. Although the likelihood of triggering a persistent slab has gone down, the consequences remain very high.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or wind slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Several troublesome layers exist in the snowpack and may be reactive to large triggers such as a cornice or wind slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Buried weak layers exist in the snowpack and may be reactive to large triggers such as a cornice or wind slab release. Human triggering may also be possible in shallow or thin, rocky areas.
="s_3FE45715">Buried weak layers exist within the snowpack and may be reactive to large triggers such as a cornice or wind slab release. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist within the snowpack and may be reactive to large triggers such as a cornice or wind slab release. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist within the snowpack and may be reactive to large triggers such as a cornice or storm slab release. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist within the snowpack and may be reactive to large triggers such as a cornice fall. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist within the snowpack and may be reactive to large triggers such as a cornice fall. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist within the snowpack and may be reactive to large triggers such as a cornice fall. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist within the snowpack and may be reactive to large triggers such as a cornice fall. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist within the snowpack and may be reactive intense solar radiation or to large triggers such as a cornice fall. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
="s_3FE45715">Buried weak layers exist within the snowpack and may be reactive intense solar radiation or to large triggers such as a cornice fall. Human triggering may also be possible in shallow or thin, rocky, unsupported terrain.
Persistent slabs are most likely to be triggered by a large load like a cornice fall; or by a person in a thin or variable-depth snowpack area.
="s_3FE45715">Persistent slabs are most likely to be triggered with a large load like cornice fall; or by a person in a thin or variable-depth snowpack spot.
Our mid-March weak layer of crust and surface hoar has been buried by up to 60 cm of storm snow and has shown prolonged reactivity since the last storm. Manage the uncertainty around triggering this layer by sticking to lower angle, supported slopes.
="s_3FE45715">Buried persistent weak layers 60 to 100 cm below the surface may roar back to life Tuesday as rain, strong warm wind, and a rapidly rising freezing level destabilize the upper snowpack. Cornice failure is also expected to be widespread Tuesday.
Smaller storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Smaller storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Smaller storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches. Areas harbouring a thin snowpack carry greater potential for triggering a deeply buried weakness.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches. Areas harbouring a thin snowpack carry greater potential for triggering a deeply buried weakness.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches. Areas with a thin snowpack have greater potential for triggering a deeply buried weakness.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches. Areas with a thin snowpack have greater potential for triggering a deeply buried weakness.
Storm slabs may step-down to deeper weak layers, resulting in large, destructive avalanches. Areas with a thin snowpack have greater potential for triggering a deeply buried weakness.
40-70 cm of snow which accumulated over the past week is poorly bonded to the late-February persistent weak layer. These slabs appear to be most reactive in wind loaded terrain where the slab may be over 1 m thick.
50-80 cm of snow which accumulated over the past week is poorly bonded to the late-February persistent weak layer. These slabs appear to be most reactive in wind loaded terrain where the slab may be over 1 m thick.
50-80 cm of snow which accumulated over the past week is poorly bonded to the late-February persistent weak layer. These slabs appear to be most reactive in wind loaded terrain where the slab may be over 1 m thick.
50-80 cm of snow from the past week is poorly bonded to the late-February weak layer. Persistent slabs appear to be most reactive in wind loaded terrain where the slab may be over 1 m thick. Ongoing loading will increase potential for deep releases.
60 -100 cm of snow from the past week is poorly bonded to the late-February weak layer. Warming temperatures and incremental loading increase the potential for deep releases. Potential also exists for smaller avalanches to 'step down' to this layer.
60 -100 cm of snow from the past week is poorly bonded to the late-February weak layer. Warming temperatures and incremental loading increase the potential for deep releases. Potential also exists for smaller avalanches to 'step down' to this layer.
60 -100 cm of snow from the past week is poorly bonded to the late-February weak layer. Warming temperatures and incremental loading increase the potential for deep releases. Potential also exists for smaller avalanches to 'step down' to this layer.
60-100 cm of snow from last week is poorly bonded to the late-February weak layer. Ongoing loading from new snow, wind, and rain will increase the potential for deep releases. Potential also exists for smaller avalanches to 'step down' to this layer.
="s_3FE45715">The snowpack has undergone rapid warming and destabilization in the past couple days, and buried persistent weak layers may still be reactive. Smaller avalanches may step down to deeper layers or the sun may trigger a deep release.
="s_3FE45715">The snowpack has undergone rapid warming and destabilization in the past couple days, and buried persistent weak layers may still be reactive. Smaller avalanches may step down to deeper layers or the sun may trigger a deep release.
="s_3FE45715">The storm will also create the potential for very large avalanches on buried persistent weak layers. Smaller avalanches or cornices are likely triggers.
="s_3FE45715">Deep weak layers are under heavy stress after recent loading and warming, creating the potential for large and surprising avalanches.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_1681A555">Recent rain to mountaintops combined with overnight cooling Thursday night will reduce the likelihood of triggering this layer. Areas in which the snowpack above this layer remained dry should be treated with increased caution.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_1681A555">Recent rain to mountaintops combined with overnight cooling Thursday night has reduced the likelihood of triggering this layer. Areas in which the snowpack above this layer remained dry should be treated with increased caution.
Recent storm snow has settled into cohesive soft slabs above the December 15th crust/surface hoar layer. Expect these slabs to be easily triggered especially on steep or convex slopes and sheltered areas where surface hoar has been buried.
Recent storm snow has settled into cohesive soft slabs above the December 15th crust/surface hoar layer. Expect these slabs to be easily triggered especially on steep or convex slopes and sheltered areas where surface hoar has been buried.
Storm snow has settled into cohesive soft slabs above the December 15th crust/surface hoar layer. Expect these slabs to be easily triggered especially on steep or convex slopes and in sheltered areas below treeline where surface hoar may be buried.
A well-developed layer of surface hoar is buried up to 80cm below the surface. These slabs may be easily triggered on steep or convex slopes and in sheltered areas at and below treeline.
A well-developed layer of surface hoar is buried up to 75cm below the surface. Use extra caution in sheltered areas at and below treeline, especially if the overlying slab is thick and cohesive.
A well-developed layer of surface hoar is buried up to 75 cm below the surface. Use extra caution in sheltered areas at and below treeline, especially if the overlying slab is thick and cohesive.
A well-developed layer of surface hoar is buried up to 75 cm below the surface. The new storm snow may promote increased settlement and cohesion of the overlying slab which would make this interface more sensitive to human triggering.
Surface hoar is now buried up to 100 cm deep and has recently produced large avalanches. Increased settlement and cohesion of the overlying slab will likely make this interface more sensitive to human triggering.
Surface hoar is now buried up to 100 cm deep and has recently produced large avalanches. Increased settlement and cohesion of the overlying slab will likely make this interface more sensitive to human triggering.
Surface hoar is now buried up to 100 cm deep and has recently produced large skier triggered avalanches. Warming temperatures Tuesday are expected to make this slab more volatile and increasingly sensitive to human triggering.
Surface hoar is now buried up to 100 cm deep and has recently produced large skier triggered avalanches.  This slab appears to be most sensitive at treeline, but it is present below treeline too. 
Surface hoar is now buried up to 100 cm deep and has recently produced large human triggered avalanches. This slab appears to be most sensitive at treeline, but it is present below treeline too.
Surface hoar is now buried up to 100 cm deep and has recently produced large human triggered avalanches. This slab appears to be most sensitive at treeline, but it is present below treeline too.
Surface hoar is now buried up to 100 cm deep and has recently produced large human triggered avalanches. This slab appears to be most sensitive at treeline, but it is present below treeline too.
Surface hoar is now buried up to 100 cm deep and has recently produced large human triggered avalanches. This slab appears to be most sensitive at treeline, but it is present below treeline too.
Surface hoar is now buried up to 100 cm deep and has recently produced large human triggered avalanches. This slab appears to be most sensitive at tree line, but it is present below tree line too.
Surface hoar is now buried up to 100 cm deep and has recently produced large human triggered avalanches. This slab appears to be most sensitive at tree line, but it is present below tree line too.
Surface hoar is now buried up to 100 cm deep and has recently produced large human triggered avalanches. This slab appears to be most sensitive at treeline, but it is present below treeline too.
Our complex snowpack is currently producing very large avalanches on deeply buried weak layers. Expert level knowledge and significant experience is required to venture into the backcountry at this time.
Our complex snowpack is currently producing very large avalanches on deeply buried weak layers. Expert level knowledge and significant experience is required to venture into the backcountry at this time.
Our complex snowpack is currently producing very large and destructive avalanches on weak layers buried up to 130cm below the surface. Expert level knowledge and significant experience is required to venture into the backcountry at this time.
Our complex snowpack is currently producing very large and destructive avalanches on weak layers buried up to 130cm below the surface. Expert level knowledge and significant experience is required to venture into the backcountry at this time.
Our complex snowpack is currently producing very large and destructive avalanches on up to four separate weak layers buried 50 to 120cm below the surface. Expert level knowledge and experience is required to safely venture into the backcountry.
Our snowpack is complex and has produced very large and destructive avalanches on up to four separate weak layers buried 50 to 120cm below the surface. Expert level knowledge and experience is required to safely venture into the backcountry.
The snowpack is complex and has produced very large and destructive avalanches on up to four separate weak layers buried 50 to 120cm below the surface. Expert level knowledge and experience is required to safely venture into the backcountry.
The snowpack is complex and has produced very large and destructive avalanches on up to four separate weak layers buried 50 to 120cm below the surface. Expert level knowledge and experience is required to safely venture into the backcountry.
The snowpack is complex and has produced very large and destructive avalanches on up to four separate weak layers buried 50 to 120cm below the surface. Expert level knowledge and experience is required to safely venture into the backcountry.
The snowpack is complex and has produced very large and destructive avalanches on up to four separate weak layers buried 50 to 130cm below the surface. Expert level knowledge and experience is required to safely venture into the backcountry.
The snowpack is complex and has produced very large and destructive avalanches on up to four separate weak layers buried 50 to 130cm below the surface. A conservative approach and moderate-angled, simple terrain are good choices.
The snowpack is complex and has produced very large and destructive avalanches on up to four separate weak layers buried 50 to 130cm below the surface. A conservative approach and moderate-angled, simple terrain are good choices.
The snowpack is complex and has produced very large and destructive avalanches on up to four separate weak layers buried 50 to 140cm below the surface. A conservative approach and moderate-angled, simple terrain are good choices.
The snowpack is complex and has produced very large and destructive avalanches on up to four separate weak layers buried 50 to 140cm below the surface. A conservative approach and moderate-angled, simple terrain are good choices.
The snowpack is complex and has produced very large avalanches on up to four separate weak layers buried 50 to 140cm below the surface. A conservative approach and moderate-angled, simple terrain are good ways to manage a complex snowpack.
The snowpack is complex and has produced very large avalanches on up to four separate weak layers buried 60 to 140cm below the surface. A conservative approach and moderate-angled, simple terrain are good ways to manage a complex snowpack.
The snowpack is complex and has produced very large avalanches on up to four separate weak layers buried 60 to 140cm below the surface. A conservative approach and moderate-angled, simple terrain are good ways to manage a complex snowpack.
The snowpack is complex and has produced very large avalanches on up to four separate weak layers buried 60 to 140cm below the surface. A conservative approach and moderate-angled, simple terrain are good ways to manage a complex snowpack.
The snowpack is complex and has produced very large avalanches on up to four separate weak layers buried 60 to 140cm below the surface. A conservative approach and moderate-angled, simple terrain are good ways to manage a complex snowpack.
The snowpack is complex and has produced very large avalanches on up to four separate weak layers buried 80 to 150cm below the surface. A conservative approach and moderate-angled, simple terrain are good ways to manage a complex snowpack.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried 80 to 150 cm below the surface. A conservative approach and moderate-angled, simple terrain are good ways to manage a complex snowpack.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried 80 to 150 cm below the surface. Moderate-angled, simple terrain selection remains critical to safe mountain travel.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried 80 to 150 cm below the surface. Moderate-angled, simple terrain selection remains critical to safe mountain travel.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried 80 to 150 cm below the surface. Moderate-angled, simple terrain selection remains critical to safe mountain travel.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried 80 to 150 cm below the surface. Moderate-angled, simple terrain selection remains critical to safe mountain travel.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried 80 to 150 cm below the surface. Moderate-angled, simple terrain selection remains critical to safe mountain travel.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried 80 to 150 cm below the surface. Moderate-angled, simple terrain selection remains critical to safe mountain travel.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried 80 to 150 cm below the surface. Moderate-angled, simple terrain selection remains critical to safe mountain travel.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried below the surface.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried below the surface.
The snowpack is complex and continues to produce very large avalanches on several weak layers buried below the surface.
The snowpack is complex and continues to produce very large avalanches on weak layers now deeply buried below the surface.
="s_3FE45715">Several troublesome layers exist in the snowpack. Although the likelihood of triggering a persistent slab has gone down, the consequences remain very high.
="s_3FE45715">Several deeply buried weak layers exist in the snowpack. Although the likelihood of triggering a persistent slab is gradually decreasing, the consequences remain very high.
="s_3FE45715">Several deeply buried weak layers exist in the snowpack. Although the likelihood of triggering a persistent slab is gradually decreasing, the consequences remain very high.
="s_3FE45715">Several deeply buried weak layers exist in the snowpack. Although the likelihood of triggering a persistent slab is gradually decreasing, the consequences remain very high.
="s_3FE45715">Several deeply buried weak layers exist in the snowpack. Although the likelihood of triggering a persistent slab is gradually decreasing, the consequences remain very high.
="s_3FE45715">Several deeply buried weak layers exist in the snowpack. Although the likelihood of triggering a persistent slab is gradually decreasing, the consequences remain very high.
="s_3FE45715">Several deeply buried weak layers exist in the snowpack. Although the likelihood of triggering a persistent slab is gradually decreasing, the consequences remain very high.
="s_3FE45715">Several deeply buried weak layers exist in the snowpack. Although the likelihood of triggering a persistent slab is gradually decreasing, the consequences remain high.
="s_3FE45715">Several deeply buried weak layers exist in the snowpack. Although the likelihood of triggering a persistent slab is gradually decreasing, the consequences remain high.
="s_3FE45715">A persistent weak layer buried up to 60 cm below the surface may be sensitive to human triggering.&nbsp; Start with simple terrain and gather information before thinking about more committing objectives.
="s_3FE45715">A persistent weak layer buried up to 60 cm below the surface may be sensitive to human triggering. Start with simple terrain and gather information before thinking about more committing objectives.
="s_3FE45715">A persistent weak layer buried up to 60 cm below the surface may be sensitive to human triggering. Start with simple terrain and gather information before thinking about more committing objectives.
="s_3FE45715">A persistent weak layer buried up to 70 cm below the surface may come to life with continued loading in the form of new snow and wind. South facing terrain is likely to be the most problematic due to the presence of a slippery buried crust.
="s_3FE45715">A persistent weak layer buried up to 90 cm below the surface may be sensitive to human triggering. South facing terrain is likely to be the most problematic due to the presence of a slippery buried crust.
="s_3FE45715">A persistent weak layer buried up to 130 cm below the surface may be sensitive to human triggering. South facing terrain is likely to be the most problematic due to the presence of a slippery buried sun crust.
="s_3FE45715">A persistent weak layer buried up to 130 cm below the surface may be sensitive to human triggering. South-facing terrain is likely to be the most problematic due to the presence of a slippery buried sun crust.
="s_3FE45715">A few weak layers exist 50-100 cm below the surface and include sun crusts on south-facing terrain and surface hoar on north-facing terrain. They have been reactive to skiers and produced some concerning results in snowpack tests.
="s_3FE45715">A few weak layers exist 50-100 cm below the surface and include surface hoar on north-facing terrain and sun crusts on south-facing terrain.
="s_3FE45715">Weak layers exist 50-100 cm below the surface, including surface hoar on north-facing terrain and sun crusts on south-facing terrain. These layers may become reactive with the weight of new snow and warming.
="s_3FE45715">Weak layers exist 50-100 cm below the surface, including surface hoar on north-facing terrain and sun crusts on south-facing terrain. These layers may become reactive with the weight of new snow and warming.
="s_3FE45715">Weak layers exist 50-100 cm below the surface, including surface hoar on north-facing terrain and sun crusts on south-facing terrain. These layers may become reactive with the weight of new snow and warming.
="s_3FE45715">Weak layers exist 50-100 cm below the surface, including surface hoar on north-facing terrain and sun crusts on south-facing terrain. These layers may become reactive with the weight of new snow and warming.
="s_3FE45715">Weak layers exist 40-100 cm below the surface, including surface hoar on north-facing terrain and sun crusts on south-facing terrain. These layers may become reactive with the weight of new snow and warming.
="s_3FE45715">Weak layers exist 40-100 cm below the surface, including surface hoar on north-facing terrain and sun crusts on south-facing terrain. These layers may become reactive with the weight of new snow and warming.
="s_3FE45715">Weak layers exist 40-100 cm below the surface, including surface hoar on north-facing terrain and sun crusts on south-facing terrain. These layers will just be beginning to recover from warm temperatures on Wednesday.
Up to treeline being found especially in sheltered areas.
Up to treeline being found especially in sheltered areas.
Forecasters are tracking 3 buried layers of concern (click on &quot;Details&quot; for more), which are variable in their distribution in both elevation and aspect. Carefully evaluate these layers before committing to a piece of terrain.
Forecasters are tracking 3 buried layers of concern (click on &quot;Details&quot; for more), which are variable in their distribution in both elevation and aspect. Due to high variability it is important to dig frequently to evaluate the layers.
Forecasters are tracking 3 buried layers of concern (click on &quot;Details&quot; for more), which are highly variable in their distribution. Avalanche activity observed today initiated in the upper snowpack and then steeped down to the persistent slabs.
Numerous buried weak layers are causing some concern at Treeline.&nbsp; Avalanche activity observed in the past 2 days initiated in the upper snowpack and then steeped down to the persistent slabs.
Numerous buried weak layers are causing some concern at Treeline. Avalanche activity observed in the past 2 days initiated in the upper snowpack and then steeped down to the persistent slabs.
Numerous buried weak layers are causing some concern at Treeline. Avalanche activity observed in the past 3 days initiated in the upper snowpack and then steeped down to the persistent slabs.
This persistent slab is actually a couple of persistent weak layers that we've described individually in the snowpack summary. There is a serious snowpack weakness in areas that we wouldn't normally expect.
As snow load increases, the &quot;triggerability&quot; of this layer will go up.
As snow load increases, the &quot;triggerability&quot; of this layer will go up.
We may be near the tipping point for avalanche activity to begin on any one of several buried weak layers. Large avalanches are occurring on these layers.
New load is the key variable with this layer. How it handles the new load will likely vary from area to area.
This layer is an ominous one. So far it appears to be handling the load well, but we're thinking this is just a delayed reaction to the load. The calm before the storm if you will.
We have not seen many avalanches on this layer so far but the load is building and at some point, the scales will tip.
variable test results are keeping this layer on the radar. It is worth digging and testing as you approach treeline. Especially if we get more snow than expected.
These are deeply buried and making us more and more nervous. Be sure to assess them thoroughly.
These are deeply buried (One meter +).&nbsp; Be sure to assess them thoroughly.&nbsp; These can be triggered by loose dry or the wind slabs.
Several buried weak layers of concern exist down between 50 and 150cm. Loose dry slides or wind slabs initiated in the upper snowpack are often stepping down to these weak layers.
The Jan 6th surface hoar is down 100cm and the Dec 15 is down 120cm.&nbsp; Any slide on these layers would produce large avalanches.
The Jan 6th surface hoar is down 100cm and the Dec 15 is down 120cm. Any slide on these layers would produce large avalanches.
These layers&nbsp; are up to 200cm down.
A layer of surface hoar buried at the end of November has been responsible for fairly widespread avalanche activity in some areas. Where it exists, this layer may persist for quite some time.
Two buried spotty surface hoar layers exist up to a metre down and seem to be most reactive in deeper snowpack areas. Where it they exist, human triggering of large and destructive avalanches may be likely.
Two buried spotty surface hoar layers exist up to a metre down and seem to be most reactive in deeper snowpack areas. Where it they exist, slopes may be primed for human triggering.
A layer of surface hoar buried at the end of November has been responsible for fairly widespread avalanche activity in some areas. Human triggering is still likely, especially on unsupported terrain.
Two buried spotty surface hoar layers exist up to a metre down and seem to be most reactive in deeper snowpack areas. Where it they exist slopes may be ripe for human triggering, especially on unsupported terrain.
="s_3FE45715">A buried layer of weak surface hoar exists 100cm below the snow surface in sheltered locations between 1500 and 2200m. This concern seems to be isolated to the most southern portions of the region .
A layer of surface hoar buried at the end of November has been responsible for fairly widespread avalanche activity in some areas. Human triggering is still likely, especially on unsupported terrain.
Buried surface hoar layers exist in specific locations in the upper metre of the snowpack Rider triggers are likely where this layer sits. Suspect slopes may be sheltered treeline/ below treeline terrain and  most reactive in deeper snowpack areas.
A layer of surface hoar buried at the end of November has been responsible for fairly widespread avalanche activity in some areas. Rider triggering is still likely, especially on convex rolls, and unsupported terrain.
The storm slab is not bonding well to the melt-freeze crust that formed during early December. This crust is found below about 1800 metres.
The storm slab is not bonding well to the melt-freeze crust that formed during early December. This crust is found below about 1800 metres. Expect any steep or unsupported feature to release down to the crust.
A persistent weak layer of surface hoar, buried 60-80 cm below the surface, has been reported from around Shames. The chance of avalanche activity on this layer will increase as the slab above it gets stiffer.
The storm slab is not bonding well to the melt-freeze crust that formed during early December. This crust is found below about 1800 metres. Expect any steep or unsupported feature to release down to the crust.
A persistent weak layer of surface hoar, buried 60-80 cm below the surface, has been reported from around Shames. The chance of avalanche activity on this layer will increase as the slab above it gets stiffer.
A persistent weak layer of surface hoar, buried 60-80 cm below the surface, has been reported from around Shames. The chance of avalanche activity on this layer may increase as the slab above it gets stiffer.
If the wind stiffens the storm slab above the early December rain crust, it may be possible to trigger this weak layer which is now buried below the recent 60-80 cms of storm snow. This crust is found below 1800 metres.
A persistent weak layer of surface hoar, buried 60-80 cm below the surface has been reported from around Shames. Although triggering seems less likely, watch for convex rolls in sheltered areas where the SH may have been preserved.
A persistent weak layer of surface hoar, buried 60-80 cm below the surface has been reported from around Shames. Although triggering seems less likely, watch for convex rolls in sheltered areas where the SH may have been preserved.
="s_3FE45715">A weak layer of surface hoar and/or facetted snow exists under the recent storm snow and has been susceptible to human triggering.
="s_3FE45715">Up to 60 cm of storm snow sits on a weak layer of surface hoar and/or sugary facets and may be triggered by light loads. It may also be possible to trigger this weakness from a distance or in relatively low angle terrain.
="s_3FE45715">Up to 80 cm of snow sits on a weak layer consisting of surface hoar, a crust, and/or sugary facets. This weakness may be triggered by light loads, from a distance, and in relatively low angle terrain.
="s_3FE45715">A weak layer of surface hoar and/or facetted snow exists under the recent storm snow and has been susceptible to human triggering.
="s_3FE45715">Storm snow is particularly reactive where it overlies buried surface hoar. This weakness may be triggered easily, or even from a distance. Avalanches could be surprisingly large.
="s_3FE45715">Storm snow is particularly reactive where it overlies buried surface hoar. This weakness may be triggered from a distance and avalanches could be surprisingly large.
="s_3FE45715">Storm snow is particularly reactive where it overlies buried surface hoar. This weakness may be triggered from a distance and avalanches could be surprisingly large.
="s_3FE45715">It may be possible to trigger avalanches that release on a weak layer of surface hoar or facetted snow down 50-70 cm.
="s_3FE45715">A weak layer of surface hoar and/or facetted snow exists under the recent storm snow and has been susceptible to human triggering.
="s_3FE45715">Up to 80 cm of snow sits on a weak layer consisting of surface hoar, a crust, and/or sugary facets. This weakness may be triggered by light loads, from a distance, and in relatively low angle terrain.
="s_3FE45715">Storm snow is particularly reactive where it overlies buried surface hoar. This weakness may be triggered from a distance and avalanches could be surprisingly large.
="s_3FE45715">Storm snow is particularly reactive where it overlies buried surface hoar. This weakness may be triggered from a distance and avalanches could be surprisingly large.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Around </span><span class="s_1681A555">50 cm of settled storm snow rests on a variety of weak surfaces. These weaknesses are MOST PRONOUNCED AT AND BELOW TREELINE.  The trees are not the safe haven they usually are.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">50 cm of settled storm snow rests on a variety of weak surfaces. These weaknesses are </span><span class="s_2823317B">MOST PRONOUNCED AT AND BELOW TREELINE</span><span class="s_AA239A9B">.  The trees are not the safe haven they usually are.
="s_3FE45715">Storm snow is particularly reactive where it overlies buried surface hoar. This weakness may be triggered easily, or even from a distance. Avalanches could be surprisingly large.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Around </span><span class="s_1681A555">50 cm of settled storm snow rests on a variety of weak surfaces. This interface is weakest at and below treeline.
1681A555">Storm snow is settling into a cohesive slab 30 - 100 cm in depth.  This slab rests on a mixed bag of weak layers that when triggered may result in large avalanches.
="s_3FE45715">It may be possible to trigger avalanches that release on a weak layer of surface hoar or facetted snow down 40-70 cm.
="s_3FE45715">Up to 80 cm of snow sits on a weak layer consisting of surface hoar, a crust, and/or sugary facets. This weakness may be triggered by light loads, from a distance, and in relatively low angle terrain.
="s_3FE45715">A weak layer of surface hoar and/or facetted snow exists under the recent storm snow and has been susceptible to human triggering.
="s_3FE45715">Recent storm slabs are slowly settling, but they may still be touchy in areas where surface hoar is buried. This weakness may be triggered from a distance and avalanches could be surprisingly large.
="s_3FE45715">Storm snow is particularly reactive where it overlies buried surface hoar. This weakness may be triggered from a distance and avalanches could be surprisingly large.
="s_3FE45715">Recent storm slabs are slowly settling, but they may still be touchy in areas where surface hoar is buried. This weakness may be triggered from a distance and avalanches could be surprisingly large.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The storm snow has settled out nicely and the likelihood of triggering has greatly decreased. I suspect it's still possible to trigger an avalanche failing on the Jan. 4th interface in steep rocky and/or convex terrain.</span><span class="s_DDF6C
="s_DDF6C5E8">The 50 - 100 cm of storm snow has settled out nicely and the likelihood of triggering has greatly decreased. I suspect it's still possible to trigger an avalanche failing on the Jan. 4th interface in steep rocky and/or convex terrain.
="s_DDF6C5E8">The 50 - 100 cm of storm snow has settled out nicely and the likelihood of triggering has greatly decreased. I suspect it's still possible to trigger an avalanche failing on the Jan. 4th interface in terrain that is steep rocky and/or convex.
1681A555">The 40 - 90 cm of storm snow has settled out nicely and the likelihood of triggering has greatly decreased. I suspect it's still possible to trigger an avalanche failing on the Jan. 4th interface in terrain that is steep rocky and/or convex.
1681A555">The 40 - 90 cm of storm snow has settled out nicely and the likelihood of triggering has greatly decreased. I suspect it's still possible to trigger an avalanche failing on the Jan. 4th interface in terrain that is steep rocky and/or convex.
="s_3FE45715">Warm temperatures and solar radiation will increase the probability of avalanches releasing on a buried weak layer of surface hoar, facets, and/or a crust.
="s_3FE45715">A buried weakness, down 40-80 cm, could wake up as temperatures rise above zero early this week.
="s_3FE45715">A buried weak layer of surface hoar and/or facetted, down 70-90 cm, could wake up as temperatures rise rapidly early this week. Be particularly cautious on southerly aspects if the sun is also shining.
="s_DDF6C5E8">The 50 - 100 cm of storm snow has settled out nicely and the while likelihood of triggering has greatly decreased I suspect it's still possible to trigger an avalanche failing on the Jan. 4th interface in terrain that is steep rocky and/or convex.
="s_DDF6C5E8">Likely not much of an issue right now, it has the potential to spring back to life with the big forecasted warm up.
="s_3FE45715">Be aware of rapid warming and solar radiation forecasted as soon as tomorrow which will weaken the snow surface, possibly triggering an avalanche on the surface hoar layer down 80-120 cm. 
="s_3FE45715">Be aware of rapid warming and solar radiation forecasted early this week which will most likely weaken the snow surface, possibly triggering an avalanche on the surface hoar layer down 80-120 cm.
="s_3FE45715">Likely not much of an issue right now, it has the potential to spring back to life with the big forecasted warm up.
="s_3FE45715">Be aware of rapid warming and solar radiation forecasted early this week which will weaken the snow surface, possibly triggering an avalanche on the surface hoar layer down 80-120 cm. 
="s_3FE45715">Warm temperatures and solar radiation will increase the probability of avalanches releasing on a buried weak layer of surface hoar, facets, and/or a crust, down 40-70 cm.&nbsp;
="s_3FE45715">A buried weakness, down 40-80 cm, could wake up as temperatures rise above zero early this week.
="s_3FE45715">Warm temperatures will increase the likelihood of triggering the late December persistent weakness, down 60-90 cm.
="s_3FE45715">I suspect this layer will spring back to life when the warm temps and sunshine come out Tuesday. Slopes that didn't slide in the last cycle are of particular concern.  Pull back to simple terrain without overhead hazard as soon as it warms up.
="s_3FE45715">I suspect this layer will spring back to life when the warm temps and sunshine come out Tuesday. Slopes that didn't slide in the last cycle are of particular concern.  Pull back to simple terrain without overhead hazard as soon as it warms up.
="s_3FE45715">I suspect this layer will spring back to life when the warm temps and sunshine come out Tuesday. Slopes that didn't slide in the last cycle are of particular concern.  Pull back to simple terrain without overhead hazard as soon as it warms up.
="s_3FE45715">Be aware of rapid warming and solar radiation forecasted tomorrow and Wednesday which will most likely weaken the snow surface, possibly triggering an avalanche on the surface hoar layer down around 80 cm.
="s_3FE45715">I suspect this layer will spring back to life when the warm temps and sunshine come out Tuesday. Slopes that didn't slide in the last cycle are of particular concern.  Pull back to simple terrain without overhead hazard as soon as it warms up.
="s_3FE45715">Be aware of rapid warming and solar radiation which will weaken the snow surface, possibly triggering an avalanche on the surface hoar layer down 80-120 cm.
="s_3FE45715">Be aware of rapid warming and solar radiation which will weaken the snow surface, possibly triggering an avalanche on the surface hoar layer down around 80 cm.
="s_3FE45715">Persistent weaknesses are variable in their distribution, but can still be triggered by the weight of a person or snowmobile. Triggering persistent slabs will become more likely if the snowpack experiences rapid warming.
="s_3FE45715">Persistent weaknesses are variable in their distribution, but can still be triggered by the weight of a person or snowmobile. Triggering persistent slabs will become more likely if the snowpack experiences rapid warming.
="s_3FE45715"> Persistent </span><span class="s_3FE45715">weaknesses are buried at a prime depth for human triggering. Triggering persistent slabs will become more likely if the snowpack experiences rapid warming. </span><span class="s_3FE45
="s_3FE45715">Persistent weaknesses are variable in their distribution but can still be triggered by the weight of a person or snowmobile. Triggering persistent slabs will become more likely if the snowpack experiences rapid warming.</span><span class="s_3FE45
="s_3FE45715">A buried weakness, down 40-80 cm, has been active as a result of intense daytime warming.
New snow will add additional load to buried weak layers. Watch for triggering in steeper, unsupported terrain.
="s_3FE45715">Warm temperatures are expected increase the likelihood of triggering the late December persistent weakness.
="s_3FE45715">This layer may increase in reactivity at higher elevations with forecast inversions. Slopes that didn't slide during the last cycle are of particular concern. Make conservative terrain choices, particularly if significant warming develops.
="s_3FE45715">This layer may spring back to life if warm temperatures and sunshine develop. Slopes that didn't avalanche during the last cycle are of particular concern. Pull back to simple terrain without overhead hazard if warming occurs.
="s_3FE45715">Warm temperatures and solar radiation will increase the probability of avalanches releasing on a buried weak layer of surface hoar, facets, and/or a crust, down 40-70 cm. 
="s_3FE45715">This layer may spring back to life if warm temperatures and sunshine develop. Slopes that didn't slide in the last avalanche cycle are of particular concern. Pull back to simple terrain without overhead hazard if it warms up.
="s_3FE45715">Warm temperatures and solar radiation will increase the probability of avalanches releasing on a buried weak layer of surface hoar, facets, and/or a crust, down 40-70 cm.
="s_3FE45715">A buried weakness, down 40-80 cm, has been active as a result of intense daytime warming.
="s_3FE45715">Heavy loading by new snow and wind may overload the late December persistent weakness and result in large and destructive avalanches.
="s_3FE45715">Persistent weaknesses are variable in their distribution but can still be triggered by the weight of a person or snowmobile.
="s_3FE45715">Persistent weaknesses are variable in their distribution, but can still be triggered by the weight of a person or snowmobile.
="s_3FE45715">Persistent weaknesses are variable in their distribution, but can still be triggered by the weight of a person or snowmobile.
Forecast snowfall will add additional load to buried weak layers. Watch for triggering in steeper, unsupported terrain.
="s_3FE45715"> Persistent weaknesses are buried at a prime depth for human triggering. Triggering persistent slabs is most likely on south-facing slopes and in sheltered terrain below treeline.
="s_3FE45715">Slopes that didn't slide during last week's avalanche cycle are of particular concern. Although the likelihood of a slide has decreased, the potential consequences remain significant. Triggering may become more likely on sun-exposed slopes.
="s_3FE45715">Slopes that didn't slide in the last avalanche cycle are of particular concern. Watch for triggering on unsupported terrain.
="s_3FE45715">Slopes that didn't avalanche during the last cycle are of particular concern. Watch for triggering on unsupported terrain.
="s_3FE45715">Triggering persistent slabs is most likely on south-facing slopes and in sheltered terrain below treeline.
="s_3FE45715">Persistent weaknesses are variable in their distribution but may still be triggered by the weight of a person or snowmobile.
="s_3FE45715">Persistent weaknesses are variable in their distribution, but may still be triggered by the weight of a person or snowmobile.
="s_3FE45715">Persistent weaknesses are variable in their distribution, but may still be triggered by the weight of a person or snowmobile.
="s_3FE45715">Warm temperatures and solar radiation will increase the probability of avalanches releasing on a buried weak layer of surface hoar, facets, and/or a crust, down 40-70 cm.
="s_3FE45715">Heavy loading by new snow and wind may overload the late December persistent weakness and result in large and destructive avalanches.
="s_3FE45715">While unlikely, slopes that didn't slide in the last avalanche cycle may still be of concern this weekend.  Triggering is most likely in areas that go from thick to thin in steep unsupported terrain.
="s_3FE45715">While unlikely, slopes that didn't slide in the last avalanche cycle may still be of concern this weekend.  Triggering is most likely in areas that go from thick to thin in steep unsupported terrain.
="s_3FE45715">A buried weakness, down 40-80 cm, may become reactive as a result of intense daytime warming.
Forecast snowfall will add additional load to buried weak layers. Watch for triggering in sheltered, unsupported terrain.
="s_3FE45715">Slopes that didn't slide during last week's avalanche cycle are still of concern. Triggering of this layer is most likely in steep unsupported terrain. Triggering may become more likely in the afternoon on sun exposed slopes.</span></p><p class="p_CC664AAA"><span class="s_3FE45715">
="s_3FE45715">Triggering persistent slabs is becoming less likely, but a cautious approach to steep south-facing slopes and sheltered terrain below treeline is still advised.
="s_3FE45715">Triggering persistent slabs is becoming less likely, but a cautious approach to steep south-facing alpine slopes and sheltered terrain below treeline is still advised.
="s_3FE45715">Triggering persistent slabs is becoming less likely, but a cautious approach is still advised. Take extra care on steep south-facing alpine slopes and in sheltered terrain below treeline.
="s_3FE45715">Triggering persistent slabs is becoming less likely, but a cautious approach is still advised. Carefully assess steep south-facing slopes and slopes below about 1900 m, where persistent weaknesses are most likely to be lurking.</span><span class="s_3FE45
="s_3FE45715">Warm temperatures and solar radiation may increase the probability of avalanches releasing on a buried weak layer of surface hoar, facets, and/or a crust, down 40-70 cm.
="s_3FE45715">A buried weakness, down 40-80 cm, may become more reactive as a result of daytime warming. Watch for triggering
="s_3FE45715">There has been no new activity reported on this layer. Having said that, the weakness still exist with the potential to produce large avalanches.
A layer of surface hoar buried at the end of December may still be reactive. Watch for triggering in sheltered, unsupported terrain.
="s_3FE45715">Slopes that didn't slide during last week's avalanche cycle are still of concern. Triggering of this layer is most likely in steep unsupported terrain. Triggering may become more likely in the afternoon on sun exposed slopes.</span></p><p class="p_CC664AAA"><span class="s_3FE45715">
="s_3FE45715">While unlikely, slopes that didn't slide in the last avalanche cycle may still be of concern this weekend. Triggering is most likely in areas that go from thick to thin in steep unsupported terrain.
="s_3FE45715">While unlikely, slopes that didn't slide in the last avalanche cycle may still be of concern this weekend. Triggering is most likely in areas that go from thick to thin in steep unsupported terrain.
="s_3FE45715">Triggering persistent slabs is becoming less likely, but a cautious approach is still advised. Take extra care on steep south-facing alpine slopes and in sheltered terrain below treeline.
="s_3FE45715">Triggering persistent slabs is becoming less likely, but a cautious approach to steep south-facing slopes and sheltered terrain below treeline is still advised.
="s_3FE45715">Triggering persistent slabs is becoming less likely, but a cautious approach is still advised. Carefully assess steep south-facing slopes and slopes below about 1900 m, where persistent weaknesses are most likely to be lurking.
="s_3FE45715">Triggering persistent slabs is becoming less likely, but a cautious approach to steep south-facing alpine slopes and sheltered terrain below treeline is still advised.
="s_3FE45715">A cautious approach is recommended on steep south-facing slopes and sheltered terrain below treeline with daytime warming and solar radiation possibly weakening the snowpack.
="s_3FE45715">A very cautious approach is recommended on steep south-facing slopes and sheltered terrain below treeline with daytime warming and solar radiation possibly weakening the snowpack.
="s_3FE45715">A very cautious approach is recommended on steep south-facing slopes and sheltered terrain below treeline with daytime warming and solar radiation possibly weakening the snowpack.
="s_3FE45715">A cautious approach is recommended on steep S slopes and sheltered terrain below treeline.
="s_3FE45715">Slopes that didn't slide during last week's avalanche cycle are still of concern. Triggering of this layer is most likely in steep unsupported terrain. Triggering may become more likely in the afternoon on sun exposed slopes.</span></p><p class="p_CC664AAA"><span class="s_3FE45715">
="s_3FE45715">While unlikely, slopes that didn't slide in the last avalanche cycle may still be of concern this weekend. Triggering is most likely in areas that go from thick to thin in steep unsupported terrain.
="s_3FE45715">A cautious approach is recommended on steep S facing slopes and sheltered terrain below treeline with forecasted mild temperatures and solar radiation.
="s_3FE45715">While unlikely, slopes that didn't slide in the last avalanche cycle may still be of concern this weekend. Triggering is most likely in areas that go from thick to thin in steep unsupported terrain.
="s_3FE45715">A cautious approach is recommended on steep S slopes and sheltered terrain below treeline with forecasted mild temperatures and solar radiation.
="s_3FE45715">A very cautious approach is recommended on steep south-facing slopes and sheltered terrain below treeline with daytime warming and solar radiation possibly weakening the snowpack.
="s_3FE45715">A cautious approach is recommended on steep S slopes and sheltered terrain below treeline.
="s_3FE45715">The load from the storm snow could awaken the early January surface hoar layer. Distribution is patchy in sheltered areas and has been more reactive on S and SW aspects.
="s_3FE45715">A cautious approach is recommended on steep S slopes and sheltered terrain below treeline.
="s_3FE45715">The load from the storm snow could awaken the early January surface hoar layer.  Distribution is patchy in sheltered areas and has been more reactive on S and SW aspects.
="s_3FE45715">The load from the storm snow could awaken the early January surface hoar layer.&nbsp; Distribution is patchy in sheltered areas and has been more reactive on S and SW aspects.
="s_3FE45715">A cautious approach is recommended on steep S slopes and sheltered terrain below treeline.
="s_3FE45715">The load from the storm snow could awaken the early January surface hoar layer.  Distribution is patchy in sheltered areas and has been more reactive on S and SW aspects.
="s_3FE45715">The load from the storm snow could awaken the early January surface hoar layer. Distribution is patchy in sheltered areas and has been more reactive on S and SW aspects.
="s_3FE45715">The load from the storm snow could awaken the early January surface hoar layer. Distribution is patchy in sheltered areas and has been more reactive on S and SW aspects.
="s_3FE45715">The load from the storm snow could awaken the early January surface hoar layer. Distribution is patchy in sheltered areas and has been more reactive below treeline.
="s_3FE45715">The load from the storm snow could awaken the early January surface hoar layer. Distribution is patchy but has been more reactive below treeline.
="s_3FE45715">The load from the storm snow could awaken the early January surface hoar layer. Distribution is patchy but has been more reactive below treeline.
="s_3FE45715">A cautious approach is recommended on steep S slopes and sheltered terrain below treeline.
="s_3FE45715">While unlikely, it may still be possible to trigger this layer on the odd slope.  I'm thinking about a steep rocky slope with a snowpack thinner than the regional average.  Sensitivity may increase slightly Monday with warm temps and direct sun.
="s_3FE45715">Watch steep southerly facing slopes (buried suncrust) and shady sheltered glades (buried surface hoar)
="s_3FE45715">Early January surface hoar layer is patchy but has been more reactive below treeline in shaded areas.
="s_3FE45715">The early January surface hoar layer which is located below treeline under around 80 cm of snow, has started to be reactive again in the Cariboo region in an area located near the boundary of the North Columbia region.
="s_3FE45715">Watch steep southerly facing slopes (buried suncrust) and shady sheltered glades (buried surface hoar)
="s_3FE45715">Two surface hoar layers lie buried under the surface, one approximately 40cm down and the other approximately 80cm down. Both are reported to be patchy and variable in distribution. Most likely triggered on steep convex rolls at treeline or below.
="s_3FE45715">Two surface hoar layers lie buried under the surface, one approximately 40cm down and the other approximately 80cm down. The upper one is more widespread and touchy compared with the lower one.
="s_3FE45715">A cautious approach is recommended on steep S slopes and sheltered terrain below treeline.
="s_3FE45715">Early January surface hoar layer is patchy but has been more reactive below treeline, especially logging cut blocks.
="s_3FE45715">The early January surface hoar layer which is located mostly below treeline under around 80 cm of snow, has started to be reactive again in the Cariboo region in an area located near the boundary of the North Columbia region.
="s_3FE45715">Two surface hoar layers lie buried under the surface, one approximately 40cm down and the other approximately 80cm down. Both are reported to be patchy and variable in distribution. Most likely triggered on steep convex rolls at treeline or below.
="s_3FE45715">Two surface hoar layers lie buried under the surface, one approximately 40cm down and the other approximately 80cm down. The upper one is more widespread and touchy compared with the lower one.
="s_3FE45715">Two surface hoar layers lie buried under the surface, one approximately 40cm down and the other approximately 80cm down. Both are reported to be patchy and variable in distribution. Most likely triggered on steep convex rolls at treeline or below.
="s_3FE45715">Two surface hoar layers lie buried under the surface, one approximately 40cm down and the other approximately 80cm down. The upper one is more widespread and touchy compared with the lower one.
="s_3FE45715">Two surface hoar layers lie buried under the surface, one approximately 40cm down and the other approximately 80cm down. Both are reported to be patchy and variable in distribution. Most likely triggered on steep convex rolls at treeline or below.
="s_3FE45715">Recent storm snow is sitting above sun crusts, wind slabs, and other hard surfaces that were left after the dry period of mid-January. There may be a weak layer of facets or surface hoar between the old sliding surface and the recent storm snow.
="s_3FE45715">A mixed bag of weak interfaces is buried about 40 cm down. With forecast warming temperatures, it’s possible that the snow above will form into a more cohesive slab over the next few days.
40-60 cms of storm snow is sitting above a mix of hard old surfaces and areas of soft facetted snow. Some areas may have a weak layer between the old surface and the recent storm snow.
Over the past week up to meter of new snow has fallen on a crust/facet/surface hoar interface. This interface may be found most reactive in sheltered areas over convex rolls or steep terrain. Dig down and see how reactive it is in your riding area.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls.
Buried down 30-60 cm exists a surface hoar/crust/facet layer. This layer of concern seems to be most reactive in sheltered locations over convex rolls and steeper terrain features.
="s_3FE45715">Two surface hoar layers lie buried under the surface, one approximately 40cm down and the other approximately 80cm down. Both are reported to be patchy and variable in distribution. Most likely triggered on steep convex rolls at treeline or below.
40-60 cms of storm snow is sitting above a mix of hard old surfaces and areas of soft facetted snow. Some areas may have a weak layer between the old surface and the recent storm snow.
="s_3FE45715">Recent storm snow is sitting above sun crusts, wind slabs, and other hard surfaces that were left after the dry period of mid-January. There may be a weak layer of facets or surface hoar between the old sliding surface and the recent storm snow.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces. This slab may become more reactive during the forecast warm temperatures and solar radiation.
Over the past week up to meter of new snow has fallen on a crust/facet/surface hoar interface. This interface may be found most reactive in sheltered areas over convex rolls or steep terrain. Dig down and see how reactive it is in your riding area.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
Buried down 30-60 cm exists a surface hoar/crust/facet layer. This layer of concern seems to be most reactive in sheltered locations over convex rolls and steeper terrain features.
Buried down 20-50 cm exists a surface hoar/crust/facet layer. This layer has been reactive in sheltered locations over convex rolls and steeper terrain features.
="s_3FE45715">A mixed bag of weak interfaces is buried about 40 cm down. As temperatures rise, the likelihood of triggering a persistent slab may increase.
="s_3FE45715">A mixed bag of weak interfaces is buried about 70 cm down. With forecast warming temperatures, the likelihood of triggering a persistent slab may increase.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">A mixed bag of weak interfaces is buried about 20-30 cm down. With forecast warming temperatures, the likelihood of triggering a slab may increase.
="s_3FE45715">A mixed bag of weak interfaces is buried about 70 cm down. With forecast warming temperatures, the likelihood of triggering a persistent slab may increase.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">A mixed bag of weak interfaces is buried about 20-30 cm down. With forecast warming temperatures, the likelihood of triggering a slab may increase.
="s_3FE45715">A mixed bag of weak interfaces is buried about 40 cm down. As temperatures rise, the likelihood of triggering a persistent slab may increase.
Buried down 20-50 cm exists a surface hoar/crust/facet layer. This layer has been reactive in sheltered locations over convex rolls and steeper terrain features. With warming, this layer may become more reactive.
Buried down 30-60 cm exists a surface hoar/crust/facet layer. This layer of concern seems to be most reactive in sheltered locations over convex rolls and steeper terrain features. This layer may become more reactive with warming.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
="s_3FE45715">Two surface hoar layers lie buried under the surface, one approximately 40cm down and the other approximately 80cm down. Both are reported to be patchy and variable in distribution. Most likely triggered on steep convex rolls at treeline or below.
="s_3FE45715">Recent storm snow is sitting above sun crusts, wind slabs, and other hard surfaces that were left after the dry period of mid-January. There may be a weak layer of facets or surface hoar between the old sliding surface and the recent storm snow.
Storm slabs may become more reactive with forecast solar radiation and possible above freezing temperatures in the alpine.
Over the past week up to meter of new snow has fallen on a crust/facet/surface hoar interface. This interface may be found most reactive in sheltered areas over convex rolls or steep terrain. Dig down and see how reactive it is in your riding area.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces. This slab may become more reactive during the forecast warm temperatures and solar radiation.
Buried down 30-60 cm exists a surface hoar/crust/facet layer. This layer of concern seems to be most reactive in sheltered locations over convex rolls and steeper terrain features.
="s_3FE45715">Two surface hoar layers lie buried under the surface, one approximately 40cm down and the other approximately 80cm down. Both are reported to be patchy and variable in distribution. Most likely triggered on steep convex rolls at treeline or below.
="s_3FE45715">Recent storm snow is sitting above sun crusts, wind slabs, and other hard surfaces that were left after the dry period of mid-January. There may be a weak layer of facets or surface hoar between the old sliding surface and the recent storm snow.
The recent storm slab has settled into a cohesive slab that can be triggered by skiers or sledders. Fractures are propagating farther and avalanche size has increased.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces. This slab may become more reactive during the forecast warm temperatures and solar radiation.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
Up to 80 cm sits above a persistent weakness comprising of a crust/facet/surface hoar interface. This interface may be found most reactive in sheltered areas over convex rolls or steep terrain. Dig down and see how reactive it is in your riding area.
="s_3FE45715">A mixed bag of weak interfaces is buried about 40 cm down. The nature of these weaknesses may vary considerably from slope to slope.
="s_3FE45715">A mixed bag of weak interfaces is buried about 70 cm down. The nature of these weaknesses varies greatly from place to place.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">A mixed bag of weak interfaces is buried about 20-30 cm down. The nature of these weaknesses varies greatly from valley to valley.
="s_3FE45715">Recent storm snow is sitting above sun crusts, wind slabs, and other hard surfaces that were left after the dry period of mid-January. There may be a weak layer of facets or surface hoar between the old sliding surface and the recent storm snow.
The recent storm slab continues to be reactive above variable sliding surfaces.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces. This slab may become more reactive during the forecast warm temperatures below treeline.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">A mixed bag of weak interfaces is buried about 15-30 cm down. The nature of these weaknesses varies greatly from valley to valley.
="s_3FE45715">A mixed bag of weak interfaces is buried about 40 cm down. The nature of these weaknesses may vary considerably from slope to slope.
Buried down 30-60 cm exists a surface hoar/crust/facet layer. This layer of concern seems to be most reactive in sheltered locations over convex rolls and steeper terrain features at treeline and below.
Up to 80 cm sits above a persistent weakness comprising of a facet/surface hoar interface above 1000m and a crust below 1000m. The rain soaked surface snow at lower elevations will be particularly reactive.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces that comprise of buried wind slabs, surface hoar, and crusts.
="s_3FE45715">50-70 cm slab is sitting on a variety of old surfaces that were left after the dry period of mid-January. There may be a weak layer of facets or surface hoar between the old sliding surface and the recent storm snow will add load to these interfaces.
Forecast snow and strong winds will put an additional load on weak layers. They continue to be reactive above variable sliding surfaces that are down 40-80 cm below the surface.
Buried down 30-60 cm exists a surface hoar/crust/facet layer. This layer of concern seems to be most reactive in sheltered locations over convex rolls and steeper terrain features at treeline and below.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">A mixed bag of weak interfaces is buried about 15-30 cm down. The nature of these weaknesses varies greatly from valley to valley.
Up to 100 cm sits above a persistent weakness comprising of a facet/surface hoar interface above 1000m and a crust below 1000m. The lingering moist snow below the recently formed surface crust at lower elevations may be more reactive.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
="s_3FE45715">A mixed bag of weak interfaces is buried about 40 cm down. The nature of these weaknesses varies considerably from slope to slope.
Forecast snow and strong winds will put an additional load on weak layers. They continue to be reactive above variable sliding surfaces that are down 40-80 cm below the surface.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces that comprise of buried wind slabs, surface hoar, and crusts.
="s_3FE45715">50-70 cm slab is sitting on a variety of old surfaces that were left after the dry period of mid-January. There may be a weak layer of facets or surface hoar between the old sliding surface and the recent storm snow will add load to these interfaces.
50-70 cm slab is sitting on a variety of old surfaces that were left after the dry period of mid-January. These layers comprise of buried crusts on solar aspects and surface hoar in sheltered polar aspects.
Buried down 30-60 cm exists a surface hoar/crust/facet layer. This layer of concern seems to be most reactive in sheltered locations over convex rolls and steeper terrain features at treeline and below.
Persistent weaknesses in the upper snowpack (Jan. 17 crust &amp; a deeper facet/surface hoar interface) may linger. Local investigation to test the distribution and reactivity of these layers is a good idea before committing to steep slopes.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
="s_3FE45715">A mixed bag of weak interfaces is buried between 35 and 50cm below the surface. Triggering may be more likely in unsupported terrain where the overlying slab has been wind-affected.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces that comprise of buried wind slabs, surface hoar, and crusts. These weak layers exist 30-50 cm below the surface.
Buried down 30-60 cm exists a surface hoar/crust/facet layer. This layer of concern seems to be most reactive in sheltered locations over convex rolls and steeper terrain features at treeline and below.
The Jan.17 layer (down 60-100cm) still shows sudden results and a propensity for propagation in some snowpack tests. Local investigation to test the distribution and reactivity of these layers is a good idea before committing to steep slopes.
="s_3FE45715">50-70 cm slab is sitting on a variety of old surfaces that were left after the dry period of mid-January. These layers comprise of buried crusts on solar aspects and surface hoar in sheltered polar aspects.</span><span class="s_3FE45
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
="s_3FE45715">50-70 cm slab is sitting on a variety of old surfaces that were left after the dry period of mid-January. There may be a weak layer of facets or surface hoar between the old sliding surface and the recent storm snow will add load to these interfaces.
="s_3FE45715">An assortment of weak crystals is buried between 35 and 50cm below the surface. Although this interface is gaining strength, triggering may still be possible in unsupported terrain.
Persistent slabs continue to be reactive above variable sliding surfaces comprising of surface hoar, crusts and facets that are buried down 40-80 cm below the surface.
Buried down 30-60 cm exists a surface hoar/crust/facet layer. This layer of concern seems to be most reactive in sheltered locations over convex rolls and steeper terrain features at treeline and below.
The Jan.17 layer (down 60-100cm) still shows sudden results and a propensity for propagation in some snowpack tests. Local investigation to test the distribution and reactivity of this layer is a good idea before committing to steep slopes.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
Persistent slabs are 40-80 cm thick and continue to be reactive above variable sliding surfaces comprising of surface hoar, crusts and facets. They are easily triggered by the weight of a skier or a machine.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces that comprise of buried wind slabs, surface hoar, and crusts. These weak layers exist 30-50 cm below the surface.
="s_3FE45715">New storm snow adds to the depth 50-80 cm slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs continue to be reactive to rider triggers and can be difficult to predict.
="s_3FE45715">New storm snow adds to the depth (50-80 cm) of the slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs continue to be reactive to rider triggers and can be difficult to predict.
="s_3FE45715">An assortment of weak crystals is buried between 35 and 50cm below the surface. Although this interface is gaining strength, triggering may still be possible in unsupported terrain.
Various crust layers in the upper snowpack (location specific) still shows sudden results and a propensity for propagation in snowpack tests. Local investigation to test distribution and reactivity is a good idea before committing to steep slopes.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
An assortment of weak crystals is buried between 35 and 50cm below the surface. Although this interface is gaining strength, triggering may still be possible in unsupported terrain.
Buried down 30-60 cm exists a surface hoar/crust/facet layer. Although unlikely to trigger, it may still be possible in convex features.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces that comprise of buried wind slabs, surface hoar, and crusts. These weak layers exist 30-50 cm below the surface.
="s_3FE45715">New storm snow adds to the depth (50-80 cm) of the slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs continue to be reactive to rider triggers and can be difficult to predict.
Persistent slabs are 40-80 cm thick and continue to be reactive above variable sliding surfaces comprising of surface hoar, crusts and facets. They are easily triggered by the weight of a skier or a machine.
="s_3FE45715">New storm snow adds to the depth 50-80 cm slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs continue to be reactive to rider triggers and can be difficult to predict.
An assortment of weak crystals is buried between 35 and 50cm below the surface. Although this interface is gaining strength, triggering may still be possible in unsupported terrain.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces that comprise of buried wind slabs, surface hoar, and crusts. These weak layers exist 30-50 cm below the surface. They can be tricky to manage.
="s_3FE45715">New storm snow adds to the depth (50-80 cm) of the slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs continue to be reactive to rider triggers and can be difficult to predict.
="s_3FE45715">New storm snow adds to the depth 50-80 cm slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs continue to be reactive to rider triggers and can be difficult to predict.
Persistent slabs are 40-80 cm thick and continue to be reactive above variable sliding surfaces comprising of surface hoar, crusts and facets. They are easily triggered by the weight of a skier or a machine.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces that comprise of buried wind slabs, surface hoar, and crusts. These weak layers exist 30-50 cm below the surface. They can be tricky to manage.
="s_3FE45715">New storm snow adds to the depth (50-80 cm) of the slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs may to be reactive to rider triggers and can be difficult to predict.
="s_3FE45715">Recent storm snow adds to the depth 50-80 cm slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs continue to be reactive to rider triggers and can be difficult to predict.
Persistent slabs are 40-80 cm thick and continue to be reactive above variable sliding surfaces comprising of surface hoar, crusts and facets. They may be triggered by the weight of a skier or a machine.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
An assortment of weak crystals is buried between 35 and 50cm below the surface. Although this interface is gaining strength, triggering may still be possible in unsupported terrain.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
An assortment of weak crystals is buried between 35 and 50cm below the surface. Although this interface is gaining strength, triggering may still be possible in unsupported terrain.
Persistent slabs are 40-80 cm thick and continue to be reactive above variable sliding surfaces comprising of surface hoar, crusts and facets. They may be triggered by the weight of a skier or a machine.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces that comprise of buried wind slabs, surface hoar, and crusts. These weak layers exist 30-50 cm below the surface. They can be tricky to manage.
="s_3FE45715">A persistent weak layer of surface hoar, crusts and/or facets lurks around 80 cm deep. This weakness may be reactive to human triggers and can be difficult to predict.
="s_3FE45715">Recent storm snow adds to the depth 50-80 cm slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs continue to be reactive to rider triggers and can be difficult to predict.
Persistent slabs are 40-80 cm thick and continue to be reactive above variable sliding surfaces comprising of surface hoar, crusts and facets. They may be triggered by the weight of a skier or a machine.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces that comprise of buried wind slabs, surface hoar, and crusts. These weak layers exist 30-50 cm below the surface.
="s_3FE45715">A persistent weak layer of surface hoar, crusts and/or facets lurks around 80 cm deep. This weakness may be reactive to human triggers and can be difficult to predict.
="s_3FE45715">Recent storm snow adds to the depth 50-80 cm slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs continue to be reactive to rider triggers and can be difficult to predict.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
Persistent slabs are 40-80 cm thick and continue to be reactive above variable sliding surfaces comprising of surface hoar, crusts and facets. They may be triggered by the weight of a skier or a machine.
="s_3FE45715">A persistent weak layer of surface hoar, crusts and/or facets lurks around 80 cm deep. This weakness may be reactive to human triggers and can be difficult to predict.
The recent storm snow continues to settle into a cohesive slab above weak layers and variable old surfaces that comprise of buried wind slabs, surface hoar, and crusts. These weak layers exist 30-50 cm below the surface.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
="s_3FE45715">Recent storm snow adds to the depth 50-80 cm slab that is sitting on a variety of old surfaces comprising of surface hoar, crusts and facets. Persistent slabs continue to be reactive to rider triggers and can be difficult to predict.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
There are older layers of buried surface hoar and crusts that are unlikely to be triggered by the weight of a skier or sledder, but may be triggered by large additional loads like cornice fall or wind/storm slab avalanches in motion.
="s_3FE45715">There are older layers of buried surface hoar and crusts that are buried down about 80-110 cms. These layers continue to show results in snow profile tests and may be triggered by large additional loads.
="s_3FE45715">There are older layers of weak surface hoar and crusts that are buried deeper in the snowpack. These layers are down approximately 60-70 cms and 100 cms, and may be triggered by large additional loads.
There are a couple of older layers of buried surface hoar and crust combinations that are buried down about 70 cms and 100 cms, that may be triggered by large additional loads.
="s_3FE45715">There are older layers of buried surface hoar and crusts that are buried down about 80-110 cms. These layers continue to show results in snow profile tests and may be triggered by large additional loads.
="s_3FE45715">There are older layers of weak surface hoar and crusts that are buried deeper in the snowpack. These layers are down approximately 60-70 cms and 100 cms, and may be triggered by large additional loads.
There are older layers of buried surface hoar and crusts that are unlikely to be triggered by the weight of a skier or sledder, but may be triggered by large additional loads like cornice fall or wind/storm slab avalanches in motion.
There are a couple of older layers of buried surface hoar and crust combinations that are buried down about 70 cms and 100 cms, that may be triggered by large additional loads.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
There are older layers of buried surface hoar and crusts that are unlikely to be triggered by the weight of a skier or sledder, but may be triggered by large additional loads like cornice fall or wind/storm slab avalanches in motion.
="s_3FE45715">There are older layers of buried surface hoar and crusts that are buried down about 80-110 cms. These layers continue to show results in snow profile tests and may be triggered by large additional loads.
="s_3FE45715">There are older layers of weak surface hoar and crusts that are buried deeper in the snowpack. These layers are down approximately 60-70 cms and 100 cms, and may be triggered by large additional loads.
There are a couple of older layers of buried surface hoar and crust combinations that are buried down about 70 cms and 100 cms, that may be triggered by large additional loads.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
There are a couple of older layers of buried surface hoar and crust combinations that are buried down about 70 cms and 100 cms, that may be triggered by large additional loads.
There are older layers of buried surface hoar and crusts that are unlikely to be triggered by the weight of a skier or sledder, but may be triggered by large additional loads like cornice fall or wind/storm slab avalanches in motion.
="s_3FE45715">There are older layers of weak surface hoar and crusts that are buried deeper in the snowpack. These layers are down approximately 60-70 cms and 100 cms, and may be triggered by large additional loads.
="s_3FE45715">There are older layers of buried surface hoar and crusts that are buried down about 80-110 cms. These layers continue to show results in snow profile tests and may be triggered by large additional loads.
Buried beneath the new snow sits a surface hoar/crust/facet weakness. This may be sensitive to rider triggers in steeper sheltered terrain or over convex rolls, especially at treeline and below treeline elevations.
There are older layers of buried surface hoar and crusts that are unlikely to be triggered by the weight of a skier or sledder, but may be triggered by large additional loads like cornice fall or wind/storm slab avalanches in motion.
="s_3FE45715">There are older layers of buried surface hoar and crusts that are buried down about 80-110 cms. These layers continue to show results in snow profile tests and may be triggered by large additional loads.
="s_3FE45715">There are older layers of weak surface hoar and crusts that are buried deeper in the snowpack. These layers are down approximately 60-70 cms and 100 cms, and may be triggered by large additional loads.
There are a couple of older layers of buried surface hoar and crust combinations that are buried down about 70 cms and 100 cms, that may be triggered by large additional loads.
Buried beneath the new snow sits a surface hoar/crust/facet weakness down 40 - 100 cm. This may be sensitive to rider triggering in steeper sheltered terrain or over convex rolls, especially at treeline elevations.
There are older layers of buried surface hoar and crusts that are unlikely to be triggered by the weight of a skier or sledder, but may be triggered by large additional loads like cornice fall or a slab avalanche in motion.
There are a couple of older layers of buried surface hoar and crust combinations that are buried down about 70 cms and 100 cms, that may be triggered by large additional loads.
="s_3FE45715">There are older layers of buried surface hoar and crusts that are buried down about 80-110 cms. These layers continue to show results in snow profile tests and may be triggered by large additional loads.
="s_3FE45715">There are older layers of weak surface hoar and crusts that are buried deeper in the snowpack. These layers are down approximately 60-70 cms and 100 cms, and may be triggered by large additional loads.
Buried beneath the new snow sits a surface hoar/crust/facet weakness down 40 - 100 cm. This may be sensitive to rider triggering in steeper sheltered terrain or over convex rolls, especially at treeline elevations.
Up to 40 cm of settled storm snow sits on the Feb. 12 surface hoar or sun crust. Additional loading from snow and wind or the weight of a person could be enough to trigger this weak layer.
An average of 50 cm of recent storm snow sits on a persistent weak layer of surface hoar and/or a sun crust. More snow is in the forecast which could be enough load to result in a natural avalanche cycle.
There are older layers of buried surface hoar and crusts that are unlikely to be triggered by the weight of a skier or sledder, but may be triggered by large additional loads like cornice fall or a slab avalanche in motion.
There are a couple of older layers of buried surface hoar and crust combinations that are buried down about 70 cms and 100 cms, that may be triggered by large additional loads.
Addition loading from new snow and wind may overload the February 12 persistent weak layer and result in large avalanches.
Additional loading from snow and wind, or the weight of a person could be enough to trigger the February 12 persistent weak layer.
Buried beneath the new snow sits a surface hoar/crust/facet weakness down 40 - 100 cm. This may be sensitive to rider triggering in steeper sheltered terrain or over convex rolls, especially at treeline elevations.
Friday's storm will add additional stress to a persistent weak layer of surface hoar or a sun crust which both currently lie up to 55cm below the surface. Triggering this weakness may result in surprisingly large avalanches.
Loading from new snow and wind will likely add reactivity to persistent buried surface hoar layers. In higher snowfall areas, resulting avalanches may be surprisingly large and destructive.
Additional loading from snow and wind, or the weight of a person could be enough to trigger the February 12 persistent weak layer.
Addition loading from new snow and wind may overload the February 12 persistent weak layer and result in large avalanches.
Buried beneath the new snow sits a surface hoar/crust/facet weakness down 40 - 100 cm. This may be sensitive to rider triggering in steeper sheltered terrain or over convex rolls, especially at treeline elevations.
Storm loading has added additional stress to a persistent weak layer of surface hoar or a sun crust which now lie up to 80cm below the surface. Triggering this weakness may result in surprisingly large avalanches.
Loading from new snow and wind will likely add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be surprisingly large.
Buried beneath the new snow sits a surface hoar/crust/facet weakness down 50 - 100 cm. This may be sensitive to rider triggering in steeper sheltered terrain or over convex rolls, especially at treeline elevations.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Additional loading from snow and wind, or the weight of a rider could be enough to trigger the February 12 persistent weak layer.</span><span class="s_AA239
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Additional loading from snow and wind, or the weight of a rider could be enough to trigger the February 12 persistent weak layer.</span><span class="s_AA239
Storm loading has added additional stress to a persistent weak layer of surface hoar or a sun crust which now lie up to 100cm below the surface. Triggering this weakness may result in surprisingly large avalanches.
Loading from new snow and wind will continue to add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be surprisingly large.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Additional loading from snow and wind, or the weight of a rider could be enough to trigger the February 12 persistent weak layer. This layer has been most reactive at and below treeline.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Additional loading from snow and wind, or the weight of a rider could be enough to trigger the February 12 persistent weak layer. This layer seems most reactive at and below treeline.
Loading from new snow and wind may add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be surprisingly large.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large slabs.
Storm loading has added additional stress to a persistent weak layer of surface hoar or a sun crust which now lie up to 100cm below the surface. Triggering this weakness may result in surprisingly large avalanches.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Additional loading from snow and wind, or the weight of a rider could be enough to trigger the February 12 persistent weak layer. This layer seems most reactive at and below treeline.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now down close to 100 cm in some areas. This weakness has been susceptible to triggering by light loads or from a distance, particularly in sheltered areas at and below treeline.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large slabs.
Numerous large avalanches are failing on a weak and reactive layer of surface hoar which now lies up to 100cm below the surface. Triggering this weakness may result in surprisingly large avalanches.
A weak layer of surface hoar buried on February 12th continues to react to skier triggering, particularly in the north of the region. See the forecast details page for recent incident reports.
Loading from new snow and wind may add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be large.
Numerous large avalanches are failing on a weak and reactive layer of surface hoar which now lies up to 100cm below the surface. Triggering this weakness may result in surprisingly large avalanches.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Additional loading from snow and wind, or the weight of a rider could be enough to trigger the February 12 persistent weak layer.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now down close to 100 cm in some areas. This weakness has been susceptible to triggering by light loads or from a distance and has been reported from all elevations and aspects.
An assortment of persistent weaknesses lurk in the top 100cm. Most notably is surface hoar buried early last week, which is most concerning in sheltered treeline areas.
Loading from new snow and wind may add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be large.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large slabs.
Loading from new snow and wind may add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be large.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large slabs.
Numerous large avalanches are failing on a weak and reactive layer of surface hoar which now lies up to 100cm below the surface. Triggering this weakness may result in large and dangerous avalanches.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Additional loading from snow and wind, or the weight of a rider could be enough to trigger the February 12 persistent weak layer.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now down close to 100 cm in some areas. This weakness has been susceptible to triggering by light loads or from a distance and has been reported from all elevations and aspects.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Persistent weaknesses buried last week</span><span class="s_AA239A9B"> demand respect, as they are very touchy and are causing surprisingly large avalanches.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Persistent weaknesses buried last week demand respect, as they are very touchy, can be triggered from a distance, and are leading to surprisingly large avalanches. </span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Persistent weaknesses buried last week</span><span class="s_AA239A9B"> demand respect, as they are very touchy and are causing surprisingly large avalanches.
="s_3FE45715">Persistent weaknesses buried last week are extremely touchy, can be triggered from a distance, and may create surprisingly large avalanches.
Loading from new snow and wind may add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be large.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large slabs.
Numerous large avalanches are failing on a weak and reactive layer of surface hoar which now lies 100cm or more below the surface. Triggering this weakness will result in large and dangerous avalanches.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now 100 cm or more in some areas. This weakness has been susceptible to triggering by light loads or from a distance and has been reported from all elevations and aspects.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Additional loading from snow and wind, or the weight of a rider could be enough to trigger the February 12 persistent weak layer.
="s_3FE45715">Persistent weaknesses buried last week are extremely touchy, can be triggered from a distance, and may create surprisingly large avalanches.
="s_3FE45715">Persistent weaknesses have been touchy recently and can increase the size and consequence of avalanches.
Loading from new snow and wind may add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be large.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large large slab avalanches. The weak layers may be more reactive with additional loading from new snow, wind and rising freezIng levels.
Numerous large avalanches are failing on a weak and reactive layer of surface hoar which now lies 100cm or more below the surface. Triggering this weakness will result in large and dangerous avalanches.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Additional loading from snow and wind, or the weight of a rider could be enough to trigger the February 12 persistent weak layer.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now 100 cm or more in some areas. This weakness has been susceptible to triggering by light loads or from a distance and has been reported from all elevations and aspects.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now down 100 cm or more. This weakness has been susceptible to remote triggering and has been reported from all elevations and aspects.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large large slab avalanches. The weak layers may be more reactive with additional loading from new snow, and wind.
Loading from new snow and wind may add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be large and destructive.
="s_3FE45715">Persistent weaknesses have been touchy recently and can increase the size and consequence of avalanches.
="s_3FE45715">Persistent weaknesses have been touchy recently and can increase the size and consequence of avalanches.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now down 100 cm or more. This weakness has been susceptible to remote triggering and has been reported from all elevations and aspects.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Additional loading from snow and wind, or the weight of a rider could be enough to trigger the February 12 persistent weak layer.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now down 100 cm or more. This weakness has been susceptible to remote triggering and has been reported from all elevations and aspects.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now down 100 cm or more. This weakness has been susceptible to remote triggering and has been reported from all elevations and aspects.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large slab avalanches. The weak layers may be more reactive with additional loading from new snow, and wind.
Loading from new snow and wind may add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be large and destructive.
An assortment of persistent weaknesses lurk in the top 100cm. Most notably is surface hoar buried early last week as well as the week before, which are most concerning in sheltered treeline areas.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large slab avalanches.
Loading from new snow and wind may add reactivity to persistent buried surface hoar layers. In deeper snowfall areas, resulting avalanches may be large and destructive.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now down 100 cm or more. This weakness has been susceptible to remote triggering and has been reported from all elevations and aspects.
="s_3FE45715">A weak layer of surface hoar and/or a crust is now down 100 cm or more. This weakness has been susceptible to remote triggering and has been reported from all elevations and aspects.
="s_3FE45715">60-120 cm of settling storm snow sits on a persistent weak layer (surface hoar or crust). Triggering this layer is becoming less likely but extra caution should be given on all slopes over 30 degrees that did not previously slide.
="s_3FE45715">There is a weak layer of buried surface hoar down about 100-150 cms that may be triggered by large loads like re-grouping, cornice fall, or smaller avalanches in motion. Strong solar radiation may initiate this layer where it sits on a crust.
Persistent weak layers exist buried down 60-100 cm, comprising of surface hoar and a sun crust. Avalanches failing on these layers will likely be large and destructive.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large slab avalanches.
="s_3FE45715">60-120 cm of settling storm snow sits on a persistent weak layer (surface hoar or crust). Triggering this layer is becoming less likely but extra caution should be given on all slopes over 30 degrees that did not previously slide.
Persistent weak layers exist buried down 60-100 cm, comprising of surface hoar and a sun crust. Avalanches failing on these layers will likely be large and destructive.
="s_3FE45715">The presence of weak layers buried in the upper snowpack means there is a risk of triggering surprisingly large slab avalanches.
="s_3FE45715">60-120 cm of settling storm snow sits on a persistent weak layer of surface hoar. Extra caution should be given on all slopes over 30 degrees that did not previously slide, especially if the sun comes out.
Persistent weak layers exist buried down 60-90 cm, comprising of surface hoar and a sun crust. A cornice fall could definitely trigger this layer. 
="s_3FE45715">60-120 cm of settled snow sits on a persistent layer of surface hoar. Extra caution should be given on all slopes over 30 degrees that did not previously slide, especially with solar warming on Saturday..
Persistent weak layers exist buried down 60-90 cm, comprising of surface hoar and a sun crust. A cornice fall could definitely trigger this layer..
Persistent weak layers exist buried down 60-90 cm, comprising of surface hoar and a sun crust. A cornice fall could definitely trigger this layer.
A rain crust is found on all aspects up to 22-2400m.&nbsp; The bond with this new snow and the underlying crust is variable.&nbsp; Be sure to dig down and inspect this layer as you travel.&nbsp; Convex slopes at treeline and gullies are suspect.
A buried rain crust is found on all aspects up to 22-2400m.  The bond with this new snow and the underlying crust is variable.  Be sure to dig down and inspect this layer as you travel.  Convex slopes at treeline and gullies are suspect.
Several crust layers are found in the upper snowpack. These crusts reach as high as 3000m on S aspects and between 22-2400m on other aspects. Carefully evaluate the bond at these interfaces and be cautious during times of solar radiation.
="s_3FE45715">A buried crust and/or surface hoar layer may wake up again with loading from new snow and wind on Wednesday. Avalanches stepping down to this layer will be potentially very large and destructive.
Several crust layers are found in the upper snowpack. These crusts reach as high as 3000m on S aspects and between 22-2400m on other aspects. Carefully evaluate the bond at these interfaces and be cautious during times of solar radiation.
A weak layer comprising surface hoar crystals is buried around 60 cm below the surface and is reacting readily to natural and human triggers. This layer appears to have the ability to propagate over large areas of terrain.
="s_3FE45715">A buried crust and/or surface hoar layer, now down 60-80 cm, could be triggered in sheltered areas near treeline. Avalanches stepping down to this layer could be very large and destructive.
Several crust layers are found in the upper snowpack. These crusts reach as high as 3000m on S aspects and between 22-2400m on other aspects. Carefully evaluate the bond at these interfaces and watch for rapid temperature changes.
="s_3FE45715">A buried crust and/or surface hoar layer, now down 60-80 cm, could be triggered in sheltered areas near treeline. Avalanches stepping down to this layer could be very large and destructive.
="s_3FE45715">A volatile layer of buried surface hoar around 60 cm below the surface can be triggered from a distance, propagate across large distances and create surprisingly large avalanches.
A few crust layers are found in the upper snowpack. These crusts reach as high as 3000m on S aspects and between 22-2400m on other aspects. Monitor the location of these layers within the snowpack and assess the bond with layers above.
="s_3FE45715">A volatile layer of buried surface hoar around 50 cm below the surface can be triggered from a distance, propagate across large distances and create surprisingly large avalanches.
="s_3FE45715">Avalanches failing on a crust and/or surface hoar layer buried about 50-70 cm down are becoming less likely, but could be triggered with a heavy load, or from a thin or convex-shaped part of a slope.
A 30 - 60cm slab now rests on the March 09 surface hoar/crust combo. This consolidated slab is very touchy and is subject to remote triggering from great distances. A very cautious approach to mountain travel is appropriate at this time.
A few crust layers are found in the upper snowpack. These crusts reach as high as 3000m on S aspects and 2200m on other aspects. Monitor the location of these layers within the snowpack and assess the bond with layers above.
A 30 - 60cm slab now rests on the March 09 surface hoar/crust combo. This consolidated slab is very touchy and is subject to remote triggering from great distances. A very cautious approach to mountain travel is appropriate at this time.
="s_3FE45715">Avalanches failing on a crust and/or surface hoar layer buried about 50-70 cm down are becoming less likely, but could be triggered with a heavy load, or from a thin or convex-shaped part of a slope.
="s_3FE45715">A layer of surface hoar  buried down 50 cm was especially touchy last week. While the likelihood of triggering is slowly dropping, it can be triggered from a distance, propagate across large distances and create surprisingly large avalanches.
A few crust layers are found in the upper snowpack. These crusts reach as high as 3000m on S aspects and 2200m on other aspects. Monitor the location of these layers within the snowpack and assess the bond with layers above.
="s_3FE45715">Avalanches failing on a crust and/or surface hoar layer buried about 50-70 cm down are becoming less likely, but could be triggered with a heavy load (cornice), or from a thin or convex-shaped part of a slope.
="s_3FE45715">A layer of surface hoar buried down 50 cm was especially touchy last week. While the likelihood of triggering is slowly dropping, it can be triggered from a distance, propagate across large distances and create surprisingly large avalanches.
A 30 - 60cm slab sits on the March 09 surface hoar/crust combo. The distribution of this layer seems to be variable. However if triggered, a large destructive avalanche will occur with consequences. Remote triggering from great distances is possible.
A few crust layers are found in the upper snowpack. These crusts reach as high as 3000m on S aspects and 2200m on other aspects. Monitor the location of these layers within the snowpack and assess the bond with layers above.
="s_3FE45715">A layer of surface hoar buried down 50 cm was especially touchy last week. While the likelihood of triggering is slowly dropping, it can be triggered from a distance, propagate across large distances and create surprisingly large avalanches.
="s_3FE45715">Avalanches failing on a crust and/or surface hoar layer buried about 50-70 cm down are becoming less likely, but could be triggered with a heavy load (cornice), or from a thin or convex-shaped part of a slope.
A 30 - 60cm slab sits on the March 09 surface hoar/crust combo. The distribution of this layer seems to be variable. However if triggered, a large destructive avalanche will occur with consequences. Remote triggering from afar is possible.
="s_3FE45715">Slab avalanches have been reactive to human triggering. The weak interface being the March 15 crust down 40-60 cm below the surface. It may be more reactive in areas that have been slightly affected by the wind.
="s_3FE45715">Avalanches failing on a crust and/or surface hoar layer buried about 50-70 cm down are becoming less likely, but could be triggered with a heavy load (cornice), or from a thin or convex-shaped part of a slope.
="s_3FE45715">A layer of surface hoar buried down 50 cm was especially touchy last week. While the likelihood of triggering is slowly dropping, it can be triggered from a distance, propagate across large distances and create surprisingly large avalanches.
A 30 - 60cm slab sits on the March 09 surface hoar/crust combo. The distribution of this layer seems to be variable. However if triggered, a large destructive avalanche may occur with consequences. Remote triggering from afar is possible
="s_3FE45715">Slab avalanches have been reactive to human triggering. The weak interface being the Mid-March crust down 40-60 cm below the surface. It may be more reactive in areas that have been slightly affected by the wind.
A 30 - 60cm slab sits on the March 09 surface hoar/crust combo. The distribution of this layer seems to be variable. However if triggered, a large destructive avalanche may occur with consequences. Remote triggering from afar is possible
="s_3FE45715">Slab avalanches have been reactive to human triggering. The weak interface being the Mid-March crust down 40-60 cm below the surface. It may be more reactive in areas that have been slightly affected by the wind.
="s_3FE45715">While the likelihood of triggering is slowly dropping, the March 9th layer can be triggered from a distance, propagate across large distances and create surprisingly large avalanches.
="s_3FE45715">Avalanches failing on a crust and/or surface hoar layer buried about 60 cm are becoming less likely, but could be triggered with a heavy load (cornice), or from a thin or convex-shaped part of a slope.
The March 10th weak layer of surface hoar is now buried 100cm in most places. Large loads like cornice falls, or lighter loads in thin snowpack areas, may trigger this deeply buried weak layer.
="s_3FE45715">Avalanches failing on a crust and/or surface hoar layer buried about 60 cm are becoming less likely, but could be triggered with a heavy load (cornice), or from a thin or convex-shaped part of a slope.
="s_3FE45715">Slab avalanches have been reactive to human triggering. The weak interface being the Mid-March crust down 40-60 cm below the surface. It may be more reactive in areas that have been slightly affected by the wind.
="s_3FE45715">Slab avalanches have been reactive to human triggering. The weak interface being the Mid-March crust down 40-60 cm below the surface. It may be more reactive in areas that have been slightly affected by the wind.
Gaping cracks in the snowpack called &quot;Glide Cracks&quot;, may release to ground with warm temperatures and rain.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">This persistent slab will be tricky to manage as it overlies a variety of weak surfaces. A conservative and investigative approach is required for safe mountain travel.</span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Primarily a concern in the southern part of the regio</span><span class="s_3FE45715">n. This persistent slab will be tricky to manage as it overlies a variety of weak surfaces. A conservative and investigative approach is required for safe mountain travel.</span><span class="s_AA239
This persistent slab will be tricky to manage as it overlies a variety of weak surfaces. A conservative and investigative approach is required for safe mountain travel.
We expect the recent storm snow to continue to be reactive where it is sitting above surface hoar and crusts that were buried at the end of November.
We expect the recent storm snow to continue to be reactive above the surface hoar and crusts that were buried at the end of November.
Light loads such as skiers or sledders could trigger large avalanches associated with persistent weaknesses on sheltered slopes.
We expect the recent storm snow to continue to be reactive where it sits above surface hoar and crusts that were buried at the end of November.
Recent storm snow overlies a variety of persistent weaknesses including surface hoar and/or a sun crust. It seems to be more of a concern in the southern part of the region where it is up to 70 cm deep.
Managing these persistent slabs can be tricky; they are stubborn and direct evidence of unstable snow may be lacking, but they can produce very destructive avalanches. Treat large open slopes with suspicion until stability is confirmed.
The recent storm snow may continue to be reactive where it sits above surface hoar and/or crusts that were buried at the end of November.
This persistent slab will be tricky to manage as it overlies a variety of weak surfaces. A conservative and investigative approach is required for safe mountain travel.
This persistent slab will be tricky to manage as it overlies a variety of weak surfaces. A conservative and investigative approach is required for safe mountain travel.
Managing these persistent slabs can be tricky; they are stubborn and direct evidence of unstable snow may be lacking, but they can produce very destructive avalanches. Treat large open slopes with suspicion until stability is confirmed.
Surface hoar from the end of Nov. is now buried by the recent wind slabs.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
A weak interface consisting of surface hoar crystals is buried down around 50 cm. Elevations around 1500 m and below are most suspect, and may be rider triggered.
A weak interface consisting of surface hoar crystals is buried down around 50 cm. Elevations around 1500 m and below are most suspect, and may be rider triggered.
The recent cold temperatures have hindered the settlement of the upper snowpack into a cohesive slabs in most places. However, it would be wise to treat large open slopes with suspicion
A weak interface consisting of surface hoar crystals is buried down around 50 cm. Elevations around 1500 m and below are most suspect. They may be stubborn to trigger, but remain suspicious especially on open slopes or over convex rolls.
A weak interface consisting of surface hoar crystals on a crust is buried down around 50 cm. Elevations around 1500 m and below are most suspect. They may be stubborn to trigger, but remain suspicious especially on open slopes or over convex rolls.
A weak interface consisting of surface hoar crystals on a crust is buried down around 50 cm. Elevations around 1500 m and below are most suspect. They may be stubborn to trigger, but remain suspicious especially on open slopes or over convex rolls.
A weak interface buried at the end of November is now buried by up to 70cm of snow. Triggering this layer may be more likely in steep, unsupported terrain, and in areas where the overlying snow has settled into a cohesive slab
A weak interface consisting of surface hoar crystals on a crust is buried down around 50 cm. Elevations around 1500 m and below are most suspect. They may be stubborn to trigger, but remain suspicious especially on open slopes or over convex rolls.
A variety of persistent weaknesses exist in the mid and upper snowpack. Watch for increased reactivity with the developing snowload and forecast warming.
A variety of persistent weaknesses exist in the mid and upper snowpack. Watch for increased reactivity with the developing snowload and forecast warming.
="s_3FE45715">In deeper snowpack areas, it may be possible to trigger an avalanche on a layer of buried surface hoar. In shallower ones, watch for a weak sugary facet layer near the base. The most likely place to trigger them is on steep, convex slopes.
A weak interface buried at the end of November is now buried by up to 60cm of snow. Triggering this layer may be more likely in steep, unsupported terrain, and in areas where the overlying snow has settled into a cohesive slab
Persistent weakness may become more touchy with forecast warming and additional load from new snow and wind. This includes mid-pack surface hoar (more of a concern in deeper snowpack areas), and basal facets (more of a concern in shallow areas).
Forecast warming may increase the reactivity of an assortment of persistent weaknesses buried in the mid and upper snowpack. Triggering a persistent slab may have nasty consequences.
Forecast warming may increase the reactivity of an assortment of persistent weaknesses buried in the mid and upper snowpack. Triggering a persistent slab may have nasty consequences.
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation. Warmer weather over the weekend could make persistent slabs more touchy.
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation. Warmer temperatures could make persistent slabs more touchy.
Moderate temperatures may increase the reactivity of an assortment of persistent weaknesses buried in the mid and upper snowpack. Triggering a persistent slab may have nasty consequences.
Continued loading and warmer temperatures may increase the reactivity of an assortment of persistent weaknesses buried in the mid and upper snowpack. Triggering a persistent slab may have nasty consequences.
Moderate temperatures may increase the reactivity of an assortment of persistent weaknesses buried in the mid and upper snowpack. Triggering a persistent slab may have nasty consequences.
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation. Warmer temperatures could make persistent slabs more touchy.
Continued loading and warmer temperatures may increase the reactivity of an assortment of persistent weaknesses buried in the mid and upper snowpack. Triggering a persistent slab may have nasty consequences.
This layer should be gaining strength.
Continued loading and mild temperatures could make buried persistent weaknesses in the upper and mid snowpack much more reactive. Make conservative terrain choices over the next couple days.
Continued loading and mild temperatures may increase the reactivity of an assortment of persistent weaknesses buried in the mid and upper snowpack. Triggering a persistent slab may have nasty consequences.
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation. Warmer temperatures could make persistent slabs more touchy.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A buried persistent weak layer or facets, surface hoar, and/or a crust are buried by 30-60 cm of storm snow and may be susceptible to triggering by light load like skiers or riders.</span><span class="s_AA239
A buried persistent weak layer or facets, surface hoar, and/or a crust are buried by 40-60 cm of storm snow and may be susceptible to triggering by light load like skiers or riders.
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A buried persistent weak layer of facets, surface hoar, and/or a crust are buried by 40-60 cm of storm snow and may be susceptible to triggering by light load like skiers or riders.</span><span class="s_AA239A9B">
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A buried persistent weak layer of facets, surface hoar, and/or a crust are buried by 40-70 cm of storm snow and may be susceptible to triggering by light load like skiers or riders.</span><span class="s_AA239A9B">
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation but may exist in isolated areas at higher elevations.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">A variety of </span><a id='GoToAdded' href="http://www.fsavalanche.org/Encyclopedia/persistent_weak_layers.htm" target="_blank"><span class="s_9255B882">PWLs</span></a><span class="s_AA239A9B"> are still being discussed across the region including the Oct crust, the mid-Nov crust, and the early-Dec surface hoar. These layers are generally inactive or stubborn to trigger but may still pose a problem in isolated areas.
A buried persistent weak layer of facets, surface hoar, and/or a crust is buried by 40-70 cm of storm snow and may be susceptible to triggering by light load like skiers or riders.
A buried persistent weak layer of facets, surface hoar, and/or a crust is buried by 40-60 cm of storm snow and may be susceptible to triggering by light load like skiers or riders.
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation but may exist in isolated areas at higher elevations.
A variety of PWLs are still being discussed across the region including the Oct crust, the mid-Nov crust, and the early-Dec surface hoar. These layers are generally inactive or stubborn to trigger but may still pose a problem in isolated areas.
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation but may exist in isolated areas at higher elevations.
The most significant interface is a layer of surface hoar from early December. This is buried 30-70 cm below the surface and is becoming more reactive in areas where the upper slab has become a little denser.
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation but may exist in isolated areas at higher elevations.
The most significant interface is a layer of surface hoar buried in early December. It's buried 30-70 cm below the surface and is becoming more reactive in areas where the upper slab has become a little denser.
A buried persistent weak layer of facets, surface hoar and/ or a crust may be sensitive to rider triggers. This layer can be found 40-70 cm below the surface and If you trigger this layer, it will result in a large avalanche.
A buried persistent weak layer of facets, surface hoar, and/or a crust is buried by 40-70 cm of storm snow and may be susceptible to triggering by light load like skiers or riders.
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation but may exist in isolated areas at higher elevations.
The most significant interface is a layer of surface hoar buried in early December. It's buried 30-70 cm below the surface and is becoming more reactive in areas where the upper slab has become a little denser.
="s_3FE45715">Persistent weak layers of facets, surface hoar, and/or a crust exist in the upper 90 cm of the snowpack. With more load they may be susceptible to triggering, creating large - very large destructive avalanches.
Persistent weak layers of facets, surface hoar, and/or a crust exist in the upper 90 cm of the snowpack. With more load they may be susceptible to triggering, creating large - very large destructive avalanches.
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation but may exist in isolated areas at higher elevations. With the new snow load comes an increased likelihood of triggering this layer.
The most significant interface is a layer of surface hoar buried in early December. It's buried 30-70 cm below the surface and is becoming more reactive in areas where the upper slab has become a little denser.
="s_3FE45715">Persistent weak layers of facets, surface hoar, and/or a crust exist in the upper 90 cm of the snowpack. With more load they may be susceptible to triggering, creating large - very large destructive avalanches.
Persistent weak layers of facets, surface hoar, and/or a crust exist in the upper 90 cm of the snowpack. With more load they may be susceptible to triggering, creating large - very large destructive avalanches.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Persistent weak layers of facets, surface hoar, and/or a crust exist in the upper 90 cm of the snowpack. With more load they may be susceptible to triggering, creating large - very large destructive avalanches.</span><span class="s_AA239
Well preserved surface hoar buried at the beginning of December is widespread below 1500m elevation but may exist in isolated areas at higher elevations. With the new snow load comes an increased likelihood of triggering this layer.
A layer of surface hoar is lurking in the top meter of the snow pack. Continued settlement of the overlying snow may increase the likelihood of triggering an avalanche on this layer.
="s_3FE45715">Persistent weak layers of facets, surface hoar, and/or a crust exist in the upper 90 cm of the snowpack. With more load they may be susceptible to triggering, creating large - very large destructive avalanches.
The most significant persistent interface is a layer of surface hoar buried in early December. It's buried 30-70 cm below the surface and is becoming more reactive in areas where the upper slab has become a little denser.
Although no recent activity has been reported on persistent layers, snowpack tests show significant weaknesses in some areas up to 90cm below the surface.
A skier-triggered size 2 avalanche in the Harvey Pass area indicates persistent weaknesses buried at the end of November have become active. The variable nature of this instability requires an investigative approach for safe mountain travel.
A couple of week layers from earlier in the month are lurking in the top meter of the snow pack. Continued loading and settlement of the overlying snow may increase the likelihood of triggering an avalanche one of these layer.
Persistent weak layers exist in the upper meter of the snowpack. With the additional load of the forecast snow they may be susceptible to triggering, creating large destructive avalanches.
Various  buried weak layers are present in the region, especially in the North. New snow and wind may cause these weak layers to become more sensitive to triggering.
Buried persistent weak layers exist in the upper 90 cm of the snowpack. New snow and wind will increase the load sitting on them making them more susceptible to triggering. Resulting avalanches could be large and destructive.
Persistent weak layers of facets, surface hoar, and/or a crust exist in the upper 90 cm of the snowpack. With more load they may be susceptible to triggering, creating large - very large destructive avalanches.
A couple of weak layers from earlier in the month are lurking in the top meter of the snow pack. Continued loading and settlement of the overlying snow may increase the likelihood of triggering an avalanche one of these layers.
Persistent weaknesses exist in the upper and mid-snowpack and could be triggered by the weight of a skier or rider.
Although no recent activity has been reported on persistent layers, snowpack tests have shown significant weaknesses in some areas up to 90cm below the surface.
A skier-triggered size 2 avalanche in the Harvey Pass area indicates persistent weaknesses buried at the end of November have become active. The variable nature of this instability requires an investigative approach for safe mountain travel.
Buried persistent weak layers exist in the upper 90 cm of the snowpack. New snow and wind will increase the load sitting on them making them more susceptible to triggering.
Buried persistent weak layers exist in the upper 90 cm of the snowpack.
There is not much news on the buried mid-December rain crust. Watch for clues of instability and be prepared to dig and investigate if you plan on venturing into more committing terrain.
Several persistent weaknesses exist in the upper and mid-snowpack and could be triggered by the weight of a skier or rider.
Although no recent activity has been reported on persistent layers, snowpack tests have shown significant weaknesses in some areas up to 90cm below the surface.
Buried persistent weak layers exist in the upper 90 cm of the snowpack.
A recent skier-triggered size 2 avalanche in the Harvey Pass area indicates persistent weaknesses buried at the end of November have become active. The variable nature of this instability requires an investigative approach for safe mountain travel.
Several persistent weaknesses exist in the upper and mid-snowpack and could be triggered by the weight of a skier or rider.
Primarily a concern in Northern sections. A recently buried surface hoar layer, now down 50-60 cm, could be triggered by additional loading from snow or wind or by the weight of a rider. Also, a weak facet/crust combo lurks near the ground.
There is not much news on the buried mid-December rain crust. Watch for clues of instability and be prepared to dig and investigate if you plan on venturing into more committing terrain.
Several persistent weaknesses exist in the mid-snowpack.
Buried persistent weak layers exist in the upper 120 cm of the snowpack.
Although no recent activity has been reported on persistent layers, snowpack tests have shown significant weaknesses in some areas up to 90cm below the surface.
A recent skier-triggered size 2 avalanche in the Harvey Pass area indicates persistent weaknesses buried at the end of November have become active. The variable nature of this instability requires an investigative approach for safe mountain travel.
Primarily a concern in Northern sections. A recently buried surface hoar layer, now down 60-80 cm, could be triggered by additional loading from snow or wind or by the weight of a rider. Also, a weak facet/crust combo lurks near the ground.
Several persistent weaknesses exist in the upper and mid-snowpack and could be triggered by the weight of a skier or rider or from continued loading from snow and wind.
Buried persistent weak layers exist in the upper 110 cm of the snowpack.
Buried persistent weak layers exist in the upper 120 cm of the snowpack.
It's getting a little tricky out there.  Wind slabs avalanches have the potential to step down and trigger an avalanche on the buried surface hoar.  Plan an escape route when sizing up your lines and regroup in safe zones.
Although no recent activity has been reported on persistent layers, snowpack tests have shown significant weaknesses in some areas up to 90cm below the surface.
Primarily a concern in Northern sections. A recently buried surface hoar layer, now down 60-80 cm, could be triggered by additional loading from snow or wind or by the weight of a rider. Also, a weak facet/crust combo lurks near the ground.
Several persistent weaknesses exist in the upper and mid-snowpack and could be triggered by the weight of a skier or rider or from continued loading from snow and wind.
Buried persistent weak layers exist in the upper 120 cm of the snowpack.
This is a complex problem because it's different from one drainage to the next.&nbsp; You need to dig down and figure out if you have a slab on top of the buried surface hoar.&nbsp; If you find a slab in your riding area a conservative approach is appropriate.
Buried persistent weak layers exist in the upper 110 cm of the snowpack.
Although no recent activity has been reported on persistent layers, snowpack tests have shown significant weaknesses in some areas up to a meter below the surface.
Several persistent weaknesses exist in the upper and mid-snowpack and could be triggered by the weight of a skier or rider or from continued loading from snow and wind.
Primarily a concern in Northern sections. A recently buried surface hoar layer, now down 60-80 cm, could be triggered by additional loading from snow or wind or by the weight of a rider. Also, a weak facet/crust combo lurks near the ground.
A variety of buried surfaces exist and could be triggerable in the upper 120 cm of the snowpack.
A variety of buried surfaces exist and could be triggerable in the upper 100 cm of the snowpack.
A persistent weakness buried early December seems to be most reactive on NW through NE aspects from 1700-2000m. Lower elevation terrain and thin snowpack areas are heavily faceted with a weak base.
This is a complex problem because it's different from one drainage to the next.&nbsp; You need to dig down and figure out if you have a slab on top of the buried surface hoar.&nbsp; If you find a slab in your riding area a conservative approach is appropriate.
A weak layer buried around 50 cm from mid-December has become reactive and can be readily triggered, especially at higher elevations on a variety of aspects.
A persistent weakness buried early December seems to be most reactive on NW through NE aspects from 1700-2000m. Lower elevation terrain and thin snowpack areas are heavily faceted with a weak base.
Several persistent weaknesses exist in the upper and mid-snowpack and could be triggered by the weight of a skier or rider or from continued loading from snow and wind.
A persistent weakness buried late-November is primed for human-triggered avalanches primarily in the Flathead and Elk Valley South areas.
Primarily a concern in Northern sections. A buried surface hoar layer in the middle of the snowpack could be triggered by additional loading from snow or wind or by the weight of a rider. Also, a weak facet/crust combo lurks near the ground.
The presence of buried weak layers increases the likelihood of larger avalanches that could release to a depth of a metre or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
="s_3FE45715">The presence of buried weak layers increases the likelihood of larger avalanches that could release to a depth of a metre or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
A weak layer buried around 50 cm has become reactive and can be readily triggered, especially at higher elevations on a variety of aspects.
The presence of buried weak layers increases the likelihood of larger avalanches that could release to a depth of a metre or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
="s_3FE45715">A weak layer buried around 50 cm has become reactive and can be readily triggered, especially at higher elevations on a variety of aspects.
Primarily a concern in Northern sections. A buried surface hoar layer in the middle of the snowpack could be human-triggered. and a weak facet/crust combo lurks near the ground.
="s_3FE45715">The presence of buried weak layers increases the likelihood of larger avalanches that could release to a depth of a metre or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The presence of buried weak layers increases the likelihood of larger avalanches that could release to a depth of a metre or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time. </span><span class="s_AA239
="s_3FE45715">Storm avalanches could step down to a persistent weakness in the snowpack buried down 100 cm.
Storm avalanches could step down to a persistent weakness buried down 70 cm. This is the case especially in the Flathead and Elk Valley South areas.
Shallow snowpack areas in the North of the region may continue to have persistent weak layers of surface hoar and/or a facetted crust near the ground.
An avalanche triggered in the new snow or new windslab could step down to a persistent weakness in the snowpack buried down 100 cm.
="s_3FE45715">The presence of buried weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
A weak layer buried around 60 cm has become reactive and can be readily triggered, especially at higher elevations on a variety of aspects.
An avalanche triggered in the new snow or new windslab could step down to a persistent weakness in the snowpack buried down 100 cm.
The presence of buried weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
="s_3FE45715">The presence of buried weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
Watch for areas with a shallow weak facetted snowpack below the recent storm snow. Stiff wind slabs may also be sitting above this type of weakness and step-down avalanches may be a concern in isolated areas.
Buried surface hoar and deeply buried facets near the ground continue to be a concern in the North of the region where the snowpack is generally shallow and weak.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The presence of </span><a id='GoToAdded' href="http://www.fsavalanche.org/encyclopedia/persistent_weak_layers.htm" target="_blank"><span class="s_B5813F7D">persistent weak layers</span></a><span class="s_3FE45715"> increases the likelihood of larger avalanches that could release to a depth of a meter or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">New snow and fresh wind slabs rest on top of two </span><a id='GoToAdded' href="http://www.fsavalanche.org/encyclopedia/persistent_weak_layers.htm" target="_blank"><span class="s_9255B882">persistent weak layers</span></a><span class="s_AA239A9B"> in the upper meter of the snowpack. Many slopes are teetering on the edge of failure waiting for a human trigger, particularly exposed lee slopes at and above treeline.
="s_3FE45715">The presence of persistent weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
="s_3FE45715"> Depth hoar at base of snowpack and surface hoar or crust/facets combo layers down 100 cm could be triggered by a windslab avalanche or a sled airing onto a slope.
="s_3FE45715">The presence of persistent weak layers increases the likelihood of larger avalanches that could release to the depth of a meter or even to the ground. The distribution and reactivity of persistent weak layers is highly complex at this time.
Depth hoar at base of snowpack and surface hoar or crust/facets combo layers down 100 cm could be triggered by a windslab avalanche.
New snow and fresh wind slabs rest on top of two persistent weak layers in the upper meter of the snowpack. Many slopes are teetering on the edge of failure waiting for a human trigger, particularly exposed lee slopes at and above treeline.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to the depth of a meter or even to the ground. The distribution and reactivity of persistent weak layers is highly complex at this time.
Depth hoar at base of snowpack and surface hoar or crust/facets combo layers down 100 cm could be triggered by a windslab avalanche or a sled airing onto a slope.
Watch for areas with a shallow weak facetted snowpack below the recent storm snow. Stiff wind slabs may also be sitting above this type of weakness and step-down avalanches may be a concern in isolated areas.
A weak layer of buried facets near the ground continues to be a concern in the North of the region. The snowpack is quite variable across the region, try to get local knowledge if you are travelling to new areas.
New snow and fresh wind slabs rest on top of two persistent weak layers in the upper meter of the snowpack. Many slopes are teetering on the edge of failure waiting for a human trigger, particularly exposed lee slopes at and above treeline.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to the depth of a meter or even to the ground. The distribution and reactivity of persistent weak layers is highly complex at this time.
="s_3FE45715">The presence of persistent weak layers increases the likelihood of larger avalanches that could release to the depth of a meter or even to the ground. The distribution and reactivity of persistent weak layers is highly complex at this time.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
Watch for areas with a shallow weak facetted snowpack below the recent storm snow. Stiff wind slabs may also be sitting above this type of weakness and step-down avalanches may be a concern in isolated areas.
A weak layer of buried facets near the ground continues to be a concern in the North of the region. The snowpack is quite variable across the region. Try to get local knowledge if you are traveling to new areas.
="s_3FE45715"> Depth hoar at base of snowpack and surface hoar or crust/facets combo layers down 100 cm could be triggered by a windslab avalanche or cornice fall. These layers seem more sensitive on E facing slopes.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Fresh wind slabs rest on top of two persistent weak layers in the upper meter of the snowpack. </span><span class="s_3FE45715">Triggering a windslab could add a significant load to the snowpack and possibly step down to a deeper buried persistent weak layer.</span><span class="s_AA239
="s_3FE45715">The presence of persistent weak layers increases the likelihood of larger avalanches that could release to the depth of a meter or even to the ground. The distribution and reactivity of persistent weak layers is highly complex at this time.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more. The distribution and reactivity of persistent weak layers is highly complex at the present time.
Depth hoar at base of snowpack and/or crust/facets combo layers down 100 cm could still be triggered by skiers and sledders. These layers seem more reactive on E facing slopes.
Snow forecast for the week will create a steadily increasing load to buried facets formed during December's cold snap. Triggering this weakness may have nasty consequences.
A weak layer of buried facets near the ground continues to be a concern in the North of the region. Try to get local knowledge if you are traveling to new areas.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more.
Wind slabs rest on top of two persistent weak layers in the upper meter of the snowpack. Triggering a wind slab could add a significant load to the snowpack and possibly step down to a deeper buried persistent weak layer.
A weak layer of buried facets near the ground continues to be a concern in the north of the region. Try to get local knowledge if you are traveling to new areas.
The distribution and reactivity of persistent weak layers is highly complex at this time.
The distribution and reactivity of persistent weak layers is complex.
Snow forecast for the week will create a steadily increasing load to buried facets formed during December's cold snap. Triggering this weakness may have nasty consequences.
Snow forecast for the week will create a steadily increasing load to buried persistent weakness which seem most prevalent in the north of the region. Triggering these weaknesses may have nasty consequences.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more.
The distribution and reactivity of persistent weak layers is complex.
Wind slabs rest on top of two persistent weak layers in the upper meter of the snowpack. Triggering a wind slab could add a significant load to the snowpack and possibly step down to a deeper buried persistent weak layer.
The distribution and reactivity of persistent weak layers is highly complex at this time.
A weak layer of buried facets near the ground continues to be a concern in the north of the region. Try to get local knowledge if you are traveling to new areas.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to a depth of a meter or even more.
Two persistent weak layers exist in the upper meter of the snowpack. Intense loading from snow and wind could overload these weakness, potentially creating very large avalanches.&nbsp;
A number of buried persistent weak layers in the mid and lower snowpack could become reactive with heavy loading from snow and wind this weekend. There is potential for large, full-depth avalanches. 
Heavy loading from snow and wind could overload a variety of weaknesses in the upper and mid snowpack, potentially creating very large avalanches.&nbsp;
A weak layer of buried facets near the ground continues to be a concern in the north of the region. Watch for increased triggering in unsupported terrain with a variable or shallow snowpack.
A weak layer of buried facets near the ground continues to be a concern in the north of the region. Watch for increased triggering in unsupported terrain with a variable or shallow snowpack.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">&nbsp; Recent avalanches stepped down to the deeper persistent layers showing that they are still active and proving that they could still be triggered by a sledder or rider.</span><span class="s_AA239
There is a wide spatial variability through the region concerning the persistent weak layers which is creating a complex situation.
Resist venturing out into complex terrain, even if you observe no obvious signs of unstable snow.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Choose well supported terrain without convexities.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Be aware of thin areas that may propagate to deeper instabilities.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Heavy loading from snow and wind could overload a variety of weaknesses in the upper and mid snowpack, potentially creating very large avalanches.
The presence of persistent weak layers increases the likelihood of larger avalanches that could release to a depth of a metre or even more.
A number of buried persistent weak layers in the mid and lower snowpack could become reactive with heavy loading from snow and wind this weekend. There is potential for large, full-depth avalanches.&nbsp;
Recent storm snow and hard wind slabs have been added to the load above buried weak layers. Deeply buried weak layers may become harder to trigger, but the consequences are very large destructive avalanches.
Weak layers continue to linger deep in the snowpack. There is a lot of variability in this region. Areas that were shallow during the early season cold arctic air are very suspect now that a new load has been added.
Resist venturing out into complex terrain, even if you observe no obvious signs of unstable snow.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Choose well supported terrain without convexities.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Be aware of thin areas that may propagate to deeper instabilities.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Avoid exposure to overhead avalanche terrain, large avalanches may reach the end of run out zones.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">Be aware of the potential for full depth avalanches due to deeply buried weak layers.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Recent storm snow may not be bonding to the surface hoar and melt-freeze crusts that developed before the storm. Storm slabs are more likely in areas sheltered from the recent strong winds.
Recent storm snow and hard wind slabs have been added to the load above buried weak layers. Deeply buried weak layers may become harder to trigger, but the consequences are very large destructive avalanches.
A number of buried persistent weak layers in the mid and lower snowpack could become reactive with heavy loading from snow and wind this week. There is potential for large, full-depth avalanches.
Heavy loading from snow and wind could overload a variety of weaknesses in the upper and mid snowpack, potentially creating very large avalanches.
Recent storm snow may not be bonding to the surface hoar and melt-freeze crusts that developed before the storm. Storm slabs are more likely in areas sheltered from the recent strong winds
Recent storm snow and hard wind slabs have been added to the load above buried weak layers. Deeply buried weak layers may become harder to trigger, but the consequences are very large destructive avalanches.
A number of persistent weakness exist in the snowpack, the most notable being weak, sugary facet crystals at ground level. Forecast warming may promote ongoing avalanche activity at this interface with the potential for large, destructive avalanches.
Forecast warming will increase the likelihood of triggering a number of persistent weaknesses which exist in the snowpack. Triggering a persistent slab avalanches would have nasty consequences.
Forecast warming will increase the likelihood of triggering a number of persistent weaknesses which exist in the snowpack. Persistent slab avalanches would likely be destructive in nature.
Forecast warming will increase the likelihood of triggering a number of persistent weaknesses which exist in the snowpack. Triggering a persistent slab avalanche would have nasty consequences.
Recent storm snow may not be bonding to the surface hoar and melt-freeze crusts that developed before the storm. Storm slabs are more likely in areas sheltered from the recent strong winds. Forecast warm temperatures may result in easier triggering.
Recent storm snow and hard wind slabs have been added to the load above buried weak layers. Deeply buried weak layers may become harder to trigger, but the consequences are very large destructive avalanches.
Forecast warming will increase the likelihood of triggering a number of persistent weaknesses which exist in the snowpack. Triggers include cornice fall or a surface avalanche in motion. Any persistent slab avalanche would be highly destructive.
Forecast warming will increase the likelihood of triggering a number of persistent weaknesses in the snowpack. Possible triggers include cornice fall. A persistent slab avalanche would be highly destructive in nature.
Forecast warming will increase the likelihood of triggering a number of persistent weaknesses which exist in the snowpack. Triggers include cornice fall or a surface avalanche in motion. Any persistent slab avalanche would have nasty consequences.
Forecast warm temperatures are expected to result in cornices becoming weak and falling naturally. Cornice falls may trigger buried weak layers on slopes below resulting in very large avalanches.
Recent storm snow and hard wind slabs have been added to the load above buried weak layers. Deeply buried weak layers may become harder to trigger, but the consequences are very large destructive avalanches.
Recent storm snow may not be bonding to the surface hoar and melt-freeze crusts that developed before the storm. Storm slabs are more likely in areas sheltered from the recent strong winds. Forecast warm temperatures may result in easier triggering..
Recent storm snow and hard wind slabs have been added to the load above buried weak layers. Deeply buried weak layers may become harder to trigger, but the consequences are very large destructive avalanches.
Recent storm snow may not be bonding to the surface hoar and melt-freeze crusts that developed before the storm. Storm slabs are more likely in areas sheltered from the recent strong winds. Forecast warm temperatures may result in easier triggering.
Forecast warm temperatures are expected to result in cornices becoming weak and falling naturally. Cornice falls may trigger buried weak layers on slopes below resulting in very large avalanches
Recent storm snow and hard wind slabs have been added to the load above buried weak layers. Deeply buried weak layers may become harder to trigger, but the consequences could be very large destructive avalanches.
Recent storm snow may not be bonding to the surface hoar and melt-freeze crusts that developed before the storm. Storm slabs are more likely in areas sheltered from the recent strong winds. Forecast warm temperatures may result in easier triggering.
Dense storm slabs above this SH layer will likely now be hard to trigger, but if triggered may produced large destructive avalanches.
Dense storm slabs above this SH layer will likely now be hard to trigger, but if triggered may produced large destructive avalanches.
Storm snow and hard wind slabs have been added to the load above buried weak layers. Deeply buried weak layers may become harder to trigger, but the consequences could be very large destructive avalanches.
Storm snow may not bond to the surface hoar and melt-freeze crusts that developed before the storm. Storm slabs are more likely in areas sheltered from the recent strong winds. Forecast warm temperatures may result in easier triggering of these slabs
Storm snow may not have bond well to the surface hoar and melt-freeze crusts that developed before the storm.  Forecast warm temperatures may result in easier triggering of these slabs
Dense storm slabs above this SH layer will likely now be hard to trigger, but if triggered may produced large destructive avalanches.
Storm snow and hard wind slabs have been added to the load above buried weak layers. Deeply buried weak layers may become harder to trigger, but the consequences could be very large destructive avalanches.
There are several buried crusts and or surface hoar layers that developed in the end of January and during the cold weather earlier this month. Avalanches releasing on these layers may be large with serious consequences.
I am splitting this PWL out of the storm slab problem because most of the activity is releasing in the storm snow layers. Avalanches that release on this PWL are expected to be less frequent but higher consequence.
There are several buried crusts and or surface hoar layers that developed in the end of January and during the cold weather earlier this month. Avalanches releasing on these layers may be large with serious consequences.
The crust and facet layer that developed during the cold weather at the beginning of the month is now down about 90 cm. Avalanches that release on this PWL are expected to be less frequent but higher consequence.
The early February crust /facet layer is now down over a metre and continues to be reactive. Storm snow avalanches in motion may step down to this widespread weak layer. Expect long fracture propagations across terrain boundaries.
Forecast new storm snow may over load the persistent weak layer resulting in very large avalanches. Storm snow avalanches in motion may step down to the buried weak layer.
The persistent slab is over a metre deep and continues to be very touchy to any additional load. Continued wind loading, storm slab avalanches or cornice falls in motion, and triggering from adjacent terrain are all concerns.
Expect the deeply buried weak layer to continue to produce very large and destructive avalanches. Each load of new snow adds to the storm slab above the weak layer.
This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
="s_3FE45715">This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
="s_3FE45715">This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
="s_3FE45715">This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
The early February weak layer continues to be very sensitive to any additional load. Remote triggering from adjacent terrain and very long fracture propagations are a concern.
Expect the deeply buried weak layer to continue to produce very large and destructive avalanches. Each load of new snow adds to the storm slab above the weak layer.
The persistent slab is over a metre deep and continues to be very touchy to any additional load. Continued wind loading, storm slab avalanches or cornice falls in motion, and triggering from adjacent terrain are all concerns.
This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
="s_3FE45715">This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
="s_3FE45715">This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
This problem is surprising very experienced professionals and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering, a phenomenon that should become more prevalent as the slab gains cohesion.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Expect the deeply buried weak layer to continue to produce very large and destructive avalanches. </span><span class="s_3FE45715">Slopes are</span><span class="s_6A269DDD"> primed</span><span class="s_3FE45715"> for remote triggering and remains a concern on all aspects and elevations.</span><span class="s_AA239
The persistent slab is over a metre deep and continues to be very touchy to any additional load. Continued wind loading, storm slab avalanches or cornice falls in motion, and triggering from adjacent terrain are all concerns.
The early February weak layer continues to be very sensitive to any additional load. Remote triggering from adjacent terrain and very long fracture propagations are a concern. If triggered large to very large avalanches are expected.
A weak facet/crust combo, with surface hoar in some areas, is now down 80-150 cm and is primed for human triggering. This weakness shows potential for wide propagation and very large avalanches.
A persistent weakness, now down 60-80 cm in the northern part of the region and 100-150 cm in the south, is primed for rider triggering. This tricky problem has the potential for wide propagation and very large avalanches.
Blue skies and fresh snow will make it very tempting to push out into more committing terrain. Don't get lured in! The current conditions are very tricky and require patience and conservative decision making.
Solar radiation and/or additional wind loading could be enough to tip the scales and greatly increase the potential for triggering this problem. Pay close attention to local conditions.
="s_3FE45715">A thick slab from the last series of storms sits on top of a touchy persistent weak layer and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering. In wind-loaded areas the slab is up to 2m thick.
A thick slab from the last series of storms sits on top of a touchy persistent weak layer and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering.  In wind-loaded areas the slab is up to 2m thick.
="s_3FE45715">A thick slab from the last series of storms sits on top of a touchy persistent weak layer and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering. In wind-loaded areas the slab is up to 2m thick.
="s_3FE45715">A thick slab from the last series of storms sits on top of a touchy persistent weak layer and remains primed for human triggering. This meter deep slab has shown a propensity for remote triggering. In wind-loaded areas the slab is up to 2m thick.
="s_3FE45715">The persistent slab is over a metre deep and continues to be very touchy to any additional load. Continued wind loading, surface slab avalanches, cornice falls in motion, and triggering from adjacent terrain are all concerns.
The persistent weak layer continues to be very sensitive to any additional load. Remote triggering from adjacent terrain and very long fracture propagations are a major concern. All elevations are suspect and have been reactive.
ont-weight: bold;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">Expect the deeply buried weak layers to continue to produce very large and destructive avalanches. Slopes are </span><span class="s_2823317B">primed </span><span class="s_AA239A9B">for human triggering and it remains a concern on all aspects and elevations.
A weak facet/crust combo, with surface hoar in some areas, is now down 80-150 cm and remains a concern for human triggering. This weakness shows potential for wide propagation and very large avalanches.
A persistent weakness, now down 60-80 cm in the northern part of the region and 100-150 cm in the south, remains a concern for rider triggering. This tricky problem has the potential for wide propagation and very large avalanches.
Blue skies and fresh snow will make it very tempting to push out into more committing terrain. Don't get lured in! The current conditions are very tricky and require patience and conservative decision making.
Solar radiation and/or additional wind loading could be enough to tip the scales and greatly increase the potential for triggering this problem. Pay close attention to local conditions.
="s_3FE45715">Over a metre deep and continues to be touchy to any additional load. Continued wind loading, surface slabs, cornice falls in motion, and human triggering from adjacent terrain are all concerns.
Expect the deeply buried weak layers to continue to produce large and destructive avalanches. Slopes are primed for human triggering and remain a concern on all aspects and elevations.
The persistent weak layer continues to be very sensitive to any additional load. Remote triggering from adjacent terrain and very long fracture propagations are a major concern on all aspects and elevations.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">A thick slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagations. In wind-loaded areas the slab is up to 2m thick.</span><span class="s_AA239
="s_3FE45715">A thick slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagations. In wind-loaded areas the slab is up to 2m thick.
A thick slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagations. In wind-loaded areas the slab is up to 2m thick.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A thick slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagations. In wind-loaded areas the slab is up to 2m thick.</span><span class="s_AA239
Warming temperatures and solar radiation will likely increase the probability of triggered the mid February persistent weak layer, that is now down 80-150 cm.
Strong solar radiation and warming temperatures will likely increase the probability of avalanches running on the mid February persistent weak layer, which is now down 80-150 cm.&nbsp;
Rapidly rising temperatures will likely increase the probability of avalanches releasing on the buried mid February persistent weak layer. The resulting slides could be very large and destructive.
The mid February persistent weak layer is down between 35 and 90 cm. Forecast solar radiation and warming temperatures could make this problem more reactive.&nbsp;
Expect the deeply buried weak layers to continue to produce large and destructive avalanches. Slopes are primed for human triggering and remain a concern on all aspects and elevations.
Over a metre deep and continues to be touchy to any additional load. Continued wind loading, surface slabs, cornice falls in motion, and human triggering from adjacent terrain are all concerns.
A thick slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagation. In wind-loaded areas the slab is up to 2m thick.
A thick slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagations. In wind-loaded areas the slab is up to 2m thick.
The persistent weak layer continues to be very sensitive to any additional load. Remote triggering from adjacent terrain and very long fracture propagations are a major concern on all aspects and elevations.
A thick slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagation. In wind-loaded areas the slab is up to 2m thick.
A thick slab from February storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagation. In wind-loaded areas the slab may be up to 2m thick.
Expect the deeply buried weak layers to continue to produce large and destructive avalanches. Slopes are primed for human triggering and remain a concern on all aspects and elevations.
Over a metre deep and continues to be touchy to any additional load. Continued wind loading, surface slabs, cornice falls in motion, and human triggering from adjacent terrain are all concerns
="s_3FE45715"> A thick slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagation. In wind-loaded areas the slab is up to 2m thick.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">A</span><span class="s_3FE45715"> dense slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagation. In wind-loaded areas the slab is up to 2m thick.
The deeply buried early February weak layer continues to be sensitive to additional loads. Continued warming and settling of the storm snow may result in more activity on this layer.
A thick slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and large propagation. In wind-loaded areas the slab is up to 2m thick.
A thick slab from the last series of storms sits on top of a touchy persistent weak layer. This slab has shown a propensity for remote triggering and wide propagation. In wind-loaded areas the slab may be 2m or more thick.
The deeply buried weak layer continues to be sensitive to additional loads. Cornice falls or loose wet avalanches in motion may trigger the deep weak layer of facets and crusts.
The early February persistent weak layer continues to be sensitive to any additional load. Forecast solar radiation may trigger another round of natural activity on the buried weak layer.
The mid February persistent weak layer is down between 35 and 90 cm. Forecast solar radiation and warming temperatures could make this problem more reactive.&nbsp;
The persistent weak layer continues to be very sensitive to any additional load. Remote triggering from adjacent terrain and very long fracture propagations are a major concern on all aspects and elevations.
The deeply buried weak layer continues to be sensitive to additional loads. Cornice falls or loose wet avalanches in motion may trigger the deep weak layer of facets and crusts.
The deeply buried weak layer continues to be sensitive to additional loads. Cornice falls or loose wet avalanches in motion may trigger the deep weak layer of facets and crusts.
The early February persistent weak layer continues to be sensitive to any additional load. Forecast solar radiation may trigger another round of natural activity on the buried weak layer.
The early February persistent weak layer of buried facets and crusts continues to be a concern for human triggering. Cold temperatures are not expected to help settle and bond this weak layer.
A thick storm slab from the last series of storms now lies above a touchy, persistent weak layer. This slab has shown a propensity for remote triggering and propagating over wide distances. In wind-loaded areas the slab may be up to 2m thick.
="s_3FE45715">A thick storm slab from the last series of storms now lies above a touchy, persistent weak layer. This slab has shown a propensity for remote triggering and propagating over wide distances. In wind-loaded areas the slab may be up to 2m thick.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A thick storm slab from the last series of storms now lies above a touchy, persistent weak layer. This slab has shown a propensity for remote triggering and propagating over wide distances. In wind-loaded areas the slab may be up to 2m thick. </span><span class="s_AA239
="s_3FE45715">A thick storm slab from the last series of storms now lies above a touchy, persistent weak layer. This slab has shown a propensity for remote triggering and propagating over wide distances. In wind-loaded areas the slab may be up to 2m thick.
The persistent weak layer continues to be very sensitive to any additional load. Remote triggering from adjacent terrain and very long fracture propagations are a major concern on all aspects and elevations.
The persistent weak layer continues to be very sensitive to any additional load. Remote triggering from adjacent terrain and very long fracture propagations are a major concern on all aspects and elevations.
Expect the deeply buried weak layers to continue to produce large and destructive avalanches. Slopes are primed for human triggering and remain a concern on all aspects and elevations.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">A thick storm slab from the last series of storms now lies above a touchy, persistent weak layer. This slab has shown a propensity for remote triggering and propagating over wide distances. In wind-loaded areas the slab may be up to 2m thick.</span><span class="s_AA239
A thick storm slab from the last series of storms now lies above a touchy, persistent weak layer. This slab has shown a propensity for remote triggering and propagating over wide distances. In wind-loaded areas the slab may be up to 1 1/2 m. thick.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">A thick storm slab from the last series of storms now lies above a touchy, persistent weak layer. This slab has shown a propensity for remote triggering and propagating over wide distances. In wind-loaded areas the slab may be up to 2m thick.</span><span class="s_AA239
="s_3FE45715">A dense storm slab from the last series of storms now lies above a touchy, persistent weak layer. This slab has shown a propensity for remote triggering and propagating over wide distances. In wind-loaded areas the slab may be up to 1.5 metres thick.
Continued cold temperatures are expected to preserve the buried February weak layer of facets and crusts. Avalanche fractures may propagate further as the old storm snow above the weak layers settles into a cohesive slab.
="s_3FE45715">Expect the deeply buried persistent weak layer to continue to produce large and destructive avalanches. Many slopes are still primed for human triggering and remain a concern on all aspects and elevations.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">Expect the deeply buried persistent weak layer to continue to produce large and destructive avalanches. Many slopes are still primed for human triggering and remain a concern on all aspects and elevations.</span><span class="s_AA239
Expect the deeply buried weak layers to continue to produce large and destructive avalanches. Many slopes are still primed for human triggering and remain a concern on all aspects and elevations.
Expect the deeply buried weak layers to continue to produce large and destructive avalanches. Many slopes are still primed for human triggering and remain a concern on all aspects and elevations.
="s_3FE45715">A dense storm slab now lies over a touchy, persistent weak layer. This weak layer can be triggered remotely (from a distance) and propagate over large areas. In wind-loaded areas the slab may be up to 1.5m thick. Use conservative terrain choices.
Continued cold temperatures are expected to preserve the buried February weak layer of facets and crusts. Avalanche fractures may propagate further if the old storm snow above the weak layers settles into a cohesive slab.
A dense storm slab from the last series of storms now lies above a tricky persistent weak layer. This slab has shown a propensity for remote triggering and propagating over wide distances. In some wind-loaded areas the slab may be up to 2m thick.
A dense storm slab now lies over a persistent weak layer. This weak layer can be triggered remotely (from a distance) and propagate over large areas. In wind-loaded areas the slab may be up to 2m thick. Use conservative terrain choices.
="s_3FE45715">A dense storm slab now lies over a touchy, persistent weak layer. This weak layer can be triggered remotely (from a distance) and propagate over large areas. In wind-loaded areas the slab may be up to 2m thick. Use conservative terrain choices.
Expect the deeply buried persistent weak layer to continue to produce large and destructive avalanches. Many slopes are still primed for human triggering and remain a concern on all aspects and elevations.
Expect the buried persistent weak layer to continue to produce large and destructive avalanches. Many slopes are still primed for human triggering and remain a concern on all aspects and elevations.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A dense slab overlies a variety of weak layers and may still be touchy in some areas. Put the odds in your favour by avoiding steep, unsupported slopes, areas with a thin or variable snowpack, or terrain with a significant overhead hazard</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Continued cold temperatures are expected to preserve the buried February weak layer of facets and crusts. Avalanche fractures may propagate further if the old storm snow above the weak layers settles into a cohesive slab.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">A deep, dense slab overlies a variety of weak layers and may still be touchy in some areas. Put the odds in your favour by avoiding steep, unsupported slopes, areas with a thin or variable snowpack, or terrain with a significant overhead hazard</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
This problem remains very persistent and still has the potential to produce large, destructive avalanches.&nbsp; Human triggering is becoming more difficult in thicker snowpack areas but can still be easily triggered in thin spots or with heavier triggers&nbsp;
Expect the buried persistent weak layer to continue to produce large and destructive avalanches. Many slopes are still primed for human triggering and remain a concern on all aspects and elevations.
Expect the deeply buried weak layer to continue to produce large and destructive avalanches. Many slopes are still primed for human triggering and remain a concern on all aspects and elevations.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">A deep, dense slab overlies a variety of weak layers and is still touchy in some areas. Put the odds in your favour by avoiding steep, unsupported slopes, areas with a thin or variable snowpack, or terrain with a significant overhead hazard</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A deep, dense slab overlies a variety of weak layers and is still touchy in some areas. Put the odds in your favour by avoiding steep, unsupported slopes, areas with a thin or variable snowpack, or terrain with a significant overhead hazard</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
A deep and destructive slab overlies a variety of weak layers and rider triggering continues throughout the region. Conservative terrain selection is critical to safe mountain travel.
Continued cold temperatures are expected to preserve the buried February weak layer of facets and crusts. Avalanche fractures may propagate further if the old storm snow above the weak layers settles into a cohesive slab.
A deep and destructive slab overlies a variety of weak layers and is still touchy in some areas. Put the odds in your favour by avoiding steep, unsupported slopes, areas with a thin or variable snowpack, or terrain with a significant overhead hazard.
This problem remains very persistent and still has the potential to produce large, destructive avalanches.  Human triggering is becoming more difficult in thicker snowpack areas but can still be easily triggered in thin spots or with heavier triggers
Expect the buried persistent weak layer to continue to produce large and destructive avalanches. Many slopes are still primed for human triggering and remain a concern on all aspects and elevations.
A deep, dense slab overlies a variety of weak layers and is still touchy in some areas. Put the odds in your favour by avoiding steep, unsupported slopes, areas with a thin or variable snowpack, or terrain with a significant overhead hazard
The thick persistent slab on the early-Feb weak layer is still reactive to human triggers and has the potential to produce large, destructive avalanches.&nbsp; The new snow may 'wake up' the weak layer and large natural avalanches may occur.
A deep, dense slab overlies a variety of weak layers and is still touchy in some areas. Put the odds in your favour by avoiding steep, unsupported slopes, areas with a thin or variable snowpack, or terrain with a significant overhead hazard.
Continued cold temperatures are expected to preserve the buried February weak layer of facets and crusts. Avalanche fractures may propagate further if the old storm snow above the weak layers settles into a cohesive slab.
A deep, dense slab overlies a variety of weak layers and may still be touchy in some areas. Triggering this weakness would have nasty consequences, so be patient and don't be tempted by large, unsupported terrain.
This problem remains persistent and still has the potential to produce large, destructive avalanches.&nbsp; Human triggering is becoming more difficult in thicker snowpack areas but can still be easily triggered in thin spots or with heavier triggers.
Expect the buried persistent weak layer to continue to produce large and destructive avalanches. Many slopes are still primed for human triggering and remain a concern on all aspects and elevations.
A deep, dense slab overlies a variety of weak layers and may still be touchy in some areas. Triggering this weakness would have nasty consequences, so be patient and don't be tempted by large, unsupported terrain.
The thick persistent slab on the early-Feb weak layer is still reactive to human triggers and has the potential to produce large, destructive avalanches.&nbsp; The new snow may 'wake up' the weak layer and very large natural avalanches are possible.
A deep, dense slab overlies a variety of weak layers and may still be touchy in some areas. Triggering this weakness would have nasty consequences, so don't let the lure of powder tempt you into large, unsupported terrain.
A deep, dense slab overlies a variety of weak layers and is still touchy in some areas. Triggering this weakness would have nasty consequences, so don't let the lure of powder tempt you into big unsupported terrain. 
Continued cold temperatures are expected to preserve the buried February weak layer of facets and crusts. Avalanche fractures may propagate further if the old storm snow above the weak layers settles into a cohesive slab.
A deep, dense slab overlies a variety of weak layers which are still showing reactivity in snowpack tests. Triggering this weakness would have nasty consequences with the potential for wide propagations
A deep, dense slab overlies a variety of weak layers and is still touchy in some areas. Triggering this weakness would have nasty consequences, so don't let the lure of powder tempt you into big unsupported terrain.
A deep, dense slab overlies a variety of weak layers which are still showing reactivity in snowpack tests. Triggering this weakness would have nasty consequences, so don't let the lure of powder tempt you into large, unsupported terrain.
A deep, dense slab overlies a variety of weak layers and may still be touchy in some areas. Triggering this weakness would have nasty consequences, so be patient and don't be tempted by large, unsupported terrain.
="s_3FE45715">The deeply buried persistent weak layer still has the potential to produce large and destructive avalanches. Isolated slopes are still primed for human triggering and remain a concern on all aspects and elevations.
The deeply buried persistent weak layer still has the potential to produce large and destructive avalanches. Isolated slopes are still primed for human triggering and remain a concern on all aspects and elevations.
The thick persistent slab on the early-Feb weak layer still remains reactive in some areas and has the potential to produce large, destructive avalanches.  The new snow may 'wake up' the weak layer and very large natural avalanches are possible.
Cold temperatures have likely helped to preserve the mid February persistent weak layer, down 30-80 cm. This layer could become active on Friday with new loading from snow and wind, and rapidly rising temperatures.&nbsp;
A buried persistent weak layer still has the potential to produce large and destructive avalanches especially in areas with a shallower snowpack where this layer can be found buried in the upper one meter.
Ongoing persistent avalanche activity proves layers formed about a month ago deserve respect and should still be in the front of your mind. See the Avalanche Summary in the Forecast Details section for more info on recent activity at this interface.
A buried persistent weak layer has the potential to produce large and destructive avalanches. Unsupported slopes or areas with a thinner snowpack may still be primed for human triggering.
A deep, dense slab overlies a variety of weak layers which are still producing surprise avalanches with the potential for wide propagations. The likelihood of triggering this weakness may increase with the load of the new snow.
A deep, dense slab overlies a variety of weak layers which are still producing surprise avalanches with the potential for wide propagations. The likelihood of triggering this weakness may increase with the load of the new snow.
The mid-Feb weak layer still remains reactive in some areas and has the potential to produce large, destructive avalanches. The increasing load of the new snow may 'wake up' this weak layer and very large natural avalanches are possible
A deep, dense slab overlies a variety of weak layers and may still be touchy in some areas. Triggering this weakness would have nasty consequences, so be patient and don't be tempted into large, unsupported terrain.
New loading from snow and wind, combined with significant warming, could &quot;wake up&quot; the mid&nbsp; February persistent weak layer and create large avalanches.&nbsp;
Ongoing persistent avalanche activity proves layers formed about a month ago deserve respect and should still be in the front of your mind. See the Avalanche Summary in the Forecast Details section for more info on recent activity at this interface.
A mix of weak, persistent layers buried about a month ago have not gone away. This weekend's forecast warming and rain may kick start this weakness with potential for very large and destructive avalanches.
Heavy loads of rain and snow combined with warm temperatures will test buried persistent weak layers that have the potential to produce large and destructive avalanches.
The mid-Feb weak layer still remains reactive in some areas and has the potential to produce large, destructive avalanches. Warm temperatures and the load of the new snow may 'wake up' this weak layer and very large natural avalanches are possible.
A mix of weak, persistent layers buried about a month ago have not gone away. This weekend's forecast warming and rain to mid-mountain elevations may kick start this weakness with potential for very large and destructive avalanches.
A deep, dense slab overlies a variety of weak layers and may still be reactive in some areas. Triggering this weakness would have nasty consequences, so be patient and don't be tempted into large, unsupported terrain.
New loading from snow and wind or rising temperatures could create a cohesive slab over this persistent weakness, down around 30-80 cm deep, and increase the odds of triggering this problem.
A mix of weak, persistent layers buried about a month ago have not gone away. This weekend's forecast warming and rain may kick start this weakness with potential for very large and destructive avalanches.
Ongoing persistent avalanche activity proves layers formed about a month ago deserve respect and should still be in the front of your mind. Storm slab avalanches in motion or cornice falls may trigger the persistent weak layer.
A deep, dense slab overlies a variety of weak layers and may still be reactive in some areas. Triggering this weakness would have nasty consequences, so be patient and don't be tempted into large, unsupported terrain.
A mix of weak, persistent layers buried about a month ago have not gone away. This weekend's forecast warming and rain to mid-mountain elevations may kick start this weakness with potential for very large and destructive avalanches.
The early Feb weak layer still remains reactive in some areas and has the potential to produce large, destructive avalanches. Warm temperatures and the load of the new snow may 'wake up' this weak layer and very large natural avalanches are possible.
Numerous skier triggered avalanche have recently occurred on this layer indicating how sensitive it is to skier triggering.
A weak layer buried in mid-February is now down 60-120 cm deep. Triggering an avalanche on this layer would result in a very large and destructive avalanche.&nbsp;
The early February persistent weak layer may release naturally due to the added load of the forecast new snow and wind. Cornice falls or storm slab avalanches in motion may step down to this deeply buried weak layer.
Warm temperatures and the added load from the developing storm slab may increase the likelihood of triggering the early February persistent weak layer. Avalanches in motion may step down to this weak layer.
The early February weak layer may be stubborn to trigger, but long fracture propagations may still result if a large force such as a storm slab in motion or a cornice fall steps down to the persistent weak layer.
The Feb. 9th persistent weak layer  has been re-awakened in some parts of the forecast area by the new load of storm snow. An avalanche that steps down to this layer will produce a large and destructive avalanche event.
The&nbsp; Feb. and early March weak layers still remain reactive in some areas and may produce large, destructive avalanches. Warm temperatures, and the loading by new snow may 'wake up' these weak layers. Very large avalanches are possible.
There is potential for heavy loads like a cornice fall or a storm slab avalanche to step down and trigger a deeper persistent weak layer, down over a metre in most places.
A weak layer buried in mid-February is now down 60-120 cm deep. Triggering an avalanche on this layer would result in a very large and destructive avalanche.&nbsp;
The early February weak layer may be stubborn to trigger, but long fracture propagations may still result if a large force such as a storm slab in motion or a cornice fall steps down to the persistent weak layer.
There is potential for heavy loads like a cornice fall or a storm slab avalanche to step down and trigger a deeper persistent weak layer, down over 1m in most places.
A weak layer buried in mid-February is now down 60-120 cm deep. Triggering an avalanche on this layer would result in a very large and destructive avalanche.
The early February weak layer may be stubborn to initiate, but could still be triggered by a large force such as a storm slab in motion or a cornice fall. Warming and solar radiation over the next few days may also activate this destructive layer.
There is potential for heavy loads like a cornice fall or a storm slab avalanches to step down and trigger the persistent weak layer from early-Feb which is typically down 1-1.5m.&nbsp;
A weak layer buried in mid-February is now down 60-120 cm deep. The layer remains reactive to human triggering. Smaller avalanches have the potential to step down to this layer resulting in large, destructive avalanches.
="s_3FE45715">50 - 100 cm of settled old storm snow has coalesced into a slab that is sitting on the March 02 suncrust / surface hoar combo.
="s_3FE45715">50 - 100 cm of settled old storm snow has coalesced into a slab that is sitting on the March 02 suncrust / surface hoar combo.
="s_3FE45715">50 - 100 cm of settled old storm snow has coalesced into a slab that is sitting on the March 02 suncrust / surface hoar combo.
The early-March weak layer remains very active and there has been a lot of recent activity on this layer.  Expect much of the new storm activity to release on this layer.
The early-March weak layer is still quite reactive to new snow loads and human-triggers.  The slab is now typically 30-70cm thick and continues to produce large avalanches.
The early March suncrust/surface hoar combo should not be underestimated. While there's a lot of uncertainty surrounding this layer, I suspect that the new storm snow is going to increase it's sensitivity to human triggering.
="s_3FE45715">The early March suncrust/surface hoar combo should not be underestimated. While there's a lot of uncertainty surrounding this layer, I suspect that the new storm snow is going to increase it's sensitivity to human triggering.
="s_3FE45715">The early March suncrust/surface hoar combo should not be underestimated. While there's a lot of uncertainty surrounding this layer, I suspect that the new storm snow is going to increase it's sensitivity to human triggering.
The early-March weak layer appears to have been re-awakened by new snow loads and might now be triggered by light loads like skiers and sledders  The slab is now typically 40 to 80 cm thick and continues to produce large avalanches.
="s_3FE45715">The early March suncrust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
="s_3FE45715">The early March suncrust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">The early March suncrust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.</span><span class="s_AA239
The early March sun crust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
The early March sun crust/ surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
The early March sun crust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
The early-March weak layer appears to have been re-awakened by new snow loads and might now be triggered by light loads like skiers and sledders&nbsp; The slab is now typically 40 to 80 cm thick and continues to produce large avalanches.
The March weak layer seems to have re-awakened in some parts of the region with new snow loading and strong winds
The early March sun crust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
The early March sun crust/ surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
The early March sun crust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
The March and February weak layers have become reactive throughout the forecast region with recent new snow loading and strong winds.
The Feb. and March persistent weak layers appear to have been re-awakened by new snow loads and might now be triggered by light loads like skiers and sledders&nbsp; The slab is now typically 40 to 80 cm thick and continues to produce large avalanches.
The early March sun crust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
The early March sun crust/ surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline and on south aspects, especially if the sun is shining.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The March and February weak layers have become reactive throughout the forecast region with recent new snow loading and strong winds. </span><span class="s_AA239
The Feb. and March persistent weak layers have been re-awakened by new snow loads and might now be triggered by light loads like skiers and sledders&nbsp; The slab is now typically 40 to 80 cm thick and continues to produce large avalanches.
The March and February weak layers have become reactive throughout the forecast region with recent new snow loading and strong winds.
The March and February weak layers have become reactive throughout the forecast region with recent new snow loading and strong winds. - S
The early March sun crust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
The early March sun crust/ surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline and on south aspects, especially if the sun is shining.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The persistent weak layers buried deep in the snowpack have recently become reactive with new snow loading. Conservative terrain choices are important now. </span><span class="s_AA239
The March and February weak layers have become reactive throughout the forecast region with recent new snow loading and strong winds.
The early March sun crust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
The early March sun crust/ surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline and on south aspects, especially if the sun is shining.
The persistent weak layers buried deep in the snowpack are still there. Conservative terrain choices are important now.
Activity on the March and February weak layers has slowed down, but these layers are still subject to triggering with the right load, and would produce a very large destructive avalanche
The early March sun crust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The early March sun crust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.</span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The early March sun crust/surface hoar combo should not be underestimated. While there's a lot of uncertainty and complexity surrounding this layer, it's important to note that human triggering is most likely at treeline.</span><span class="s_AA239
="s_3FE45715">The early-March and mid-March weak layers are still reactive to human-triggering and have the potential to produce large avalanches. The early-March layer is particularly tricky and conservative terrain selection remains crucial.  </span><span class="s_3FE45
The early-March and mid-March weak layers are still reactive to human-triggering and have the potential to produce large avalanches. The early-March layer is particularly tricky and conservative terrain selection remains crucial.&nbsp;
There are persistent weak layers buried deep in the snowpack. Conservative terrain choices are important now.
Activity on the March and February weak layers has slowed down, but these layers are still subject to triggering with the right load, and will produce a very large destructive avalanche
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The early-March and mid-March weak layers are still reactive to human-triggering and have the potential to produce large avalanches. The early-March layer is particularly tricky and conservative terrain selection remains crucial.  </span><span class="s_AA239
The early March persistent weak layer is buried deep enough to produce large avalanches when triggered. The added load of the recent storm slabs may result in deep slab avalanches.
The added load of new snow may result in increased sensitivity to triggering the persistent weak layer of crusts/facets/surface hoar.
The early-March and mid-March weak layers are still reactive to human-triggering and have the potential to produce large avalanches. The early-March layer is particularly tricky and conservative terrain selection remains crucial.
The early-March and mid-March weak layers are still reactive to human-triggering and have the potential to produce large avalanches. The early-March layer is particularly tricky and conservative terrain selection remains crucial.
The early-March and mid-March weak layers are still reactive to human-triggering and have the potential to produce large avalanches. The early-March layer is particularly tricky and conservative terrain selection remains crucial.
The early March persistent weak layer is buried deep enough to produce large avalanches when triggered. The added load of the recent storm slabs may result in deep slab avalanches.
The recent storm snow may not be well bonded to the buried weak layer of crusts/facets/surface hoar that developed during early March. Forecast cool temperatures may help to preserve this weak layer.
The early-March and mid-March weak layers are still reactive to human-triggering and have the potential to produce large avalanches. The early-March layer is particularly tricky and conservative terrain selection remains crucial.
The early-March and mid-March weak layers are still reactive to human-triggering and have the potential to produce large avalanches. The early-March layer is particularly tricky and conservative terrain selection remains crucial.
The early-March and mid-March weak layers are still reactive to human-triggering and have the potential to produce large avalanches. The early-March layer is particularly tricky and conservative terrain selection remains crucial.
The early March persistent weak layer is buried deep enough to produce large avalanches when triggered. The added load of the recent storm slabs may result in deep slab avalanches.
The recent storm snow may not be well bonded to the buried weak layer of crusts/facets/surface hoar that developed during early March. Forecast cool temperatures may help to preserve this weak layer.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
The early March persistent weak layer is buried deep enough to produce large avalanches when triggered. Periods of solar radiation may increase the sensitivity to triggering this buried weak layer.
The recent storm snow may not be well bonded to the buried weak layer of crusts/facets/surface hoar that developed during early March. Forecast cool temperatures may help to preserve this weak layer.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Be aware of the potential for avalanches in the upper snowpack to step down the 0211 interface.&nbsp; This layer is still producing highly variable results so be sure to evaluate this layer often as you move through the terrain.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The early March persistent weak layer is buried deep enough to produce large avalanches when triggered. Periods of solar radiation may increase the sensitivity to triggering this buried weak layer.</span><span class="s_AA239
="s_3FE45715">The recent storm snow may not be well bonded to the buried weak layer of crusts/facets/surface hoar that developed during early March. Forecast cool temperatures may help to preserve this weak layer.
This layer has not produced much activity of late but still remains a concern from thinner snowpack areas.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
="s_3FE45715">The early March persistent weak layer is buried deep enough to produce large avalanches when triggered. Periods of solar radiation may increase the sensitivity to triggering this buried weak layer.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The recent storm snow may not be well bonded to the buried weak layer of crusts/facets/surface hoar that developed during early March. Forecast cool temperatures may help to preserve this weak layer. </span><span class="s_AA239
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
="s_3FE45715">Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
="s_3FE45715">Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
The Feb 10th persistent weak layer is still a concern. It is buried 90 to 120cm in the snowpack and remains reactive to stability tests. A very serious skier-triggered avalanche occurred on this layer on Sunday (see Avalanche Activity for details).
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> The Feb 10th persistent weak layer remains a concern and continues to give variable results in snowpack tests. A very serious avalanche accident occurred on this layer on Sunday (see </span><a href="https://www.facebook.com/KCPublicSafety" target="_blank"><span class="s_9255B882">photos</span></a><span class="s_AA239A9B">).
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
Weaknesses buried earlier this month remain reactive to light triggers in isolated areas (convex slopes, southern aspects, and higher elevations). Step down potential to deeper persistent weaknesses can result in highly destructive avalanches.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Weak layers buried earlier this month remain reactive to light triggers on convex slopes, southern aspects, and steep alpine terrain. A small avalanche might  trigger a deep persistent weak layer and result in a highly destructive avalanche</span><span class="s_AA239A9B">.
="s_3FE45715">Weaknesses buried earlier this month remain reactive to light triggers on convex slopes, southern aspects, and steep terrain. A small avalanche might trigger a deep persistent weakness, and may result in a highly destructive avalanche.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Use conservative route selection, stick to moderate angled terrain with low consequence.</span></p><p class="p_CC664AAA"><span class="s_3FE45715">Minimize exposure to sun exposed slopes when the solar radiation is strong.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
In a couple of new profiles on Tuesday we found this layer still producing clean shears in the 'hard' range down as much as 130cm near the divide.
The Feb 10th layer buried 90 to 120cm is reactive to stability tests and remains sensitive to human-triggering. Large naturally-triggered avalanches have been occurring on a daily basis, primarily triggered at Treeline.
="s_3FE45715">Weak layers buried earlier this month remain reactive to light triggers on convex slopes, southern aspects, and steep alpine terrain. A small avalanche might trigger a deep persistent weak layer and result in a highly destructive avalanche.
="s_3FE45715">Weak layers buried earlier this month remain reactive to triggering on convex slopes, south aspects, and steep alpine terrain. A small avalanche might provide enough mass to trigger a persistent weakness and result in a highly destructive avalanche .
="s_3FE45715">Weaknesses buried earlier this month remain reactive to light triggers on convex slopes, southern aspects, and steep terrain. A small avalanche might trigger a deep persistent weakness, and may result in a highly destructive avalanche.
Assess this problem carefully as you approach bigger or steeper terrain at treeline and above. Thin areas seem to pose more of a problem lately.&nbsp; The Feb 10 layer is 120cm down, these avalanches have potential to be very large.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Weak layers buried earlier this month remain reactive to triggering on convex slopes, south aspects, and steep alpine terrain. A small avalanche might provide enough mass to trigger a persistent weakness and result in a highly destructive avalanche .</span><span class="s_AA239
Weaknesses buried earlier this month remain reactive to light triggers on convex slopes, solar aspects, and steep terrain. A small avalanche or cornice failure&nbsp; might trigger a deep persistent weakness, and result in a highly destructive avalanche.
="s_3FE45715">Weak layers buried earlier this month remain reactive to light triggers on convex slopes, southern aspects, and steep alpine terrain. A small avalanche might trigger a deep persistent weak layer and result in a highly destructive avalanche.
="s_3FE45715">Weak layers buried earlier this month remain reactive to light triggers on convex slopes, southern aspects, and steep alpine terrain. A small avalanche might trigger a deep persistent weak layer and result in a highly destructive avalanche.
Weaknesses buried earlier this month remain reactive to rider triggering on convex slopes, solar aspects, and steep terrain. A small avalanche or cornice failure&nbsp; might trigger a deep persistent weakness, and result in a highly destructive avalanche.
="s_3FE45715">Weak layers buried earlier this month remain reactive to rider triggering on convex slopes, south aspects, and steep alpine terrain. A small avalanche might gain enough mass to trigger a persistent weakness and trigger a highly destructive avalanche.
="s_3FE45715">Weak layers buried earlier remain reactive to rider triggering on convex slopes, south aspects, and in steep alpine terrain. A small avalanche might gain enough mass to trigger a persistent weakness and produce a highly destructive avalanche.
Weak layers buried earlier this month remain reactive to light triggers on convex slopes, southern aspects, and steep alpine terrain. A small avalanche could trigger a buried deep persistent weak layer and result in a highly destructive avalanche.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Weaknesses buried earlier this month remain reactive to rider triggering on convex slopes, solar aspects, and steep terrain. A small avalanche or cornice failure might trigger a deep persistent weakness, and result in a highly destructive avalanche. </span><span class="s_AA239
Portions of the region north of nelson may be capable of producing large avalanches due to two problematic layers in the snowpack. Reports are limited. Dig down and investigate for yourself before committing to bigger terrain.
="s_3FE45715">A weak layer of facets buried a meter deep may fail when overloaded by a skier, sledder or even wind transported snow. Avalanches on this layer could be surprisingly large.
A weak layer of facets buried a meter deep may fail when overloaded by a skier, sledder or even wind transported snow. Forecasted warming may increase sensitivity to human triggering. Avalanches on this layer could be surprisingly large.
Warm temperatures and the load from rain may spark renewed destructive avalanche activity on weak layers near the base of the snowpack. These weak layers can surprise with nasty consequences. Wet slabs are also a concern at all elevations.
Storm snow from the last few days is coalescing into a slab that rests precariously on a potent combination of weak surface hoar and stout rain crust. Conditions are prime for large human triggered avalanches failing 30 - 70 cm deep.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_1681A555">A very touchy surface hoar layer is buried by a 40-80 cm thick persistent slab. This layer is widespread, and is easily triggered by skiers and riders. Remote triggering with wide propagation is a concern.
1681A555">A very touchy surface hoar layer is buried by a 40-90 cm thick persistent slab. This layer is widespread, and is easily triggered by skiers and riders. Remote triggering with wide propagation is a concern.
1681A555">A very touchy surface hoar layer is buried by a 30-70 cm thick persistent slab. This layer is widespread, and is easily triggered by skiers and riders. Remote triggering with wide propagation is a concern.
1681A555">A very touchy surface hoar layer is buried by a 40-90 cm thick persistent slab. This layer is widespread, and is easily triggered by skiers and riders. Remote triggering with wide propagation is a concern.
30 - 80 cm of storm snow from the last few days has coalesced into a slab above a touchy weak layer/crust combo. The stage is set for large human triggered avalanches.
New snow from the previous week is coalescing into a slab that rests on a stout crust. In some places a very weak layer of surface hoar may rest between the crust and the slab which is a prime setup for human triggered avalanches.
A slab 30 - 70 cm in depth remains sensitive to human triggering. This problem isn't likely to go away any time soon.
="s_3FE45715">A very touchy surface hoar layer is buried by a 40-80 cm thick persistent slab. This layer is widespread, and is easily triggered by skiers and riders. Remote triggering with wide propagation remains a concern.
30 - 80 cm of snow from the last week has coalesced into a slab above a touchy weak layer/crust combo. This problem is likely to remain sensitive to human triggering for the foreseeable future.
="s_3FE45715">New snow from the previous week is coalescing into a slab that rests on a stout crust. In some places a very weak layer of surface hoar may rest between the crust and the slab which is a prime setup for human triggered avalanches.
This persistent weak layer, buried up to 70cm below the surface, was responsible for a few close calls over the past week. Conservative terrain selection remains critical.
Thin windslabs and recent storm slabs may be sitting on a weak layer of surface hoar and/or a crust. This problem may persist through the Holiday season.
The 50-70 cm deep slab continues to be triggered from steep convex rolls and adjacent terrain. The forecast cooling is expected to help preserve the buried weak layer, resulting in this problem persisting through the Holidays.
This persistent weak layer, buried up to 80cm below the surface, may increase in reactivity with new snow loading on Saturday night. Conservative terrain selection remains critical.
A buried surface hoar layer remains a concern, especially in the southern parts of the region.  This layer appears to be most reactive on north facing slopes around treeline elevation. Wind slabs may be building above this weakness.
This slab may continue to be triggered by skiers and riders, and may result in long fracture propagations resulting in large avalanches.
The mid-December surface hoar/ crust weak layer is buried down 40-60 cm and may be triggered by travelling on adjacent terrain. Triggering this slab may result in long fracture propagations and large avalanches.
A touchy layer of buried surface hoar crystals has been responsible for numerous small avalanches over the past few days.
Thin windslabs and recent storm slabs may be sitting on a weak layer of surface hoar and/or a crust. This problem may persist through the Holiday season.
A persistent weak layer, buried up to 70cm below the surface, was responsible for a few close calls over the past week. Conservative terrain selection remains critical.
The recent storm slab may be triggered by light additional loads like a skier/rider. Remotely triggering avalanches from travel on adjacent terrain continues to be likely.
The mid-December surface hoar/ crust weak layer is buried down 40-60 cm and may be triggered by travelling on adjacent terrain. Triggering this slab may result in long fracture propagations and large avalanches.
The 50-70 cm deep slab continues to be triggered from steep convex rolls and adjacent terrain. The forecast cooling is expected to help preserve the buried weak layer, resulting in this problem persisting through the Holidays.
A persistent weak layer, buried up to 80cm below the surface, has the potential for wide propagations. Conservative terrain selection remains critical.
The mid-December surface hoar/ crust weak layer is buried down 60-80 cm and may be triggered by travelling on adjacent terrain. Triggering this slab may result in long fracture propagations and large avalanches.
The 60-80 cm deep slab continues to be triggered from steep convex rolls and adjacent terrain. The forecast cooling is expected to help preserve the buried weak layer, resulting in this problem persisting through the Holidays.
The mid-December crust and surface hoar layer is now buried between 50-80 cm and continues to be a concern for triggering by light additional loads like a skier/rider.
Thin windslabs and recent storm slabs may be sitting on a weak layer of surface hoar and/or a crust. This problem may persist through the Holiday season.
A touchy layer of buried surface hoar crystals has been responsible for numerous small avalanches over the past few days.
A persistent weak layer, buried up to 90cm below the surface, has been reactivated by recent storm loading producing large avalanches. Conservative terrain selection remains critical.
A persistent weak layer, buried up to 90cm below the surface, was responsible for a few close calls over the past week. The key to safe backcountry travel is in conservative terrain selection.
1681A555">A very touchy surface hoar layer is buried by a 40-90 cm thick persistent slab. This layer is widespread, and is easily triggered by skiers and riders. Remote triggering with wide propagation is a concern.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A very touchy surface hoar layer is buried by a 40-90 cm thick persistent slab. This layer is widespread, and is easily triggered by skiers and riders. Remote triggering with wide propagation is a concern.</span><span class="s_AA239
: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_1681A555">A very touchy surface hoar layer is buried by a 40-90 cm thick persistent slab. This layer is widespread, and is easily triggered by skiers and riders. Remote triggering with wide propagation is a concern.</span><span class="s_AA239
The weak layer of surface hoar and crusts is down about 30-50 cm in most areas and may be deeper where new windslabs have developed. The weak layer continues to easy to trigger with light additional loads like a skier or rider.
The buried weak layer of surface hoar and crust continues to be triggered by skiers and riders. This persistent weak layer allows for long propagations and triggering from adjacent terrain. Wind slab avalanches in motion may step down to this layer.
The mid-December crust and surface hoar layer is now buried between 50-80 cm and continues to be a concern for triggering by light additional loads like a skier/rider.
The persistent weak layer of buried surface hoar and crusts continues to allow for easy triggering with light additional loads on the snowpack. Remote triggering from adjacent terrain and long fracture propagations are expected to continue.
A persistent weak layer, buried 30-80 cm below the surface continues to be a concern and skier/ rider triggering is likely.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A touchy persistent weak layer of surface hoar and/or facets on a crust exists 40-90 cm below the surface. This has been reactive with the recent storm snow, human triggering is likely and remains a concern. </span><span class="s_AA239
Warm alpine temps may reactivate a layer of small facets, mixed forms and in some places surface hoar that overlies a rain crust down 10 - 120 cm.  Surface avalanches in motion may step down to this interface.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Warm alpine temps may reactivate a layer of small facets, mixed forms and in some places surface hoar that overlies a rain crust down 10 - 120 cm.  Surface avalanches in motion may step down to this interface.</span><span class="s_AA239
="s_3FE45715">A buried surface hoar/ crust layer demands respect. It has been easy to trigger persistent slabs with light loads (like a person). This layer is down about 30-50 cm in most areas, but may be deeper where wind slabs have developed.
A persistent weak layer of surface hoar and/or facets on a crust exists 40-90 cm below the surface. This has been reactive with the recent storm snow, human triggering is likely and remains a concern.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">A buried surface hoar/ crusts layer demands respect. It is easy to trigger persistent slabs, even from a distance.
A buried surface hoar/ crust layer demands respect. It has been easy to trigger, even from a distance. As new snow builds above this weakness, avalanches are expected to become larger and easier to trigger.
="s_3FE45715">A buried surface hoar/ crust layer demands respect. It has been easy to trigger persistent slabs, even from a distance. As new snow builds above this weakness, avalanches are expected to become larger and easier to trigger.
="s_3FE45715"> A persistent weak layer, buried 30-80 cm below the surface continues to be a concern and skier/ rider triggering is likely.
Continued warm alpine temps may reactivate a layer of small facets, mixed forms and in some places surface hoar that overlies a rain crust down 10 to 120 cm. Surface avalanches in motion may also step down to this interface.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Continued warm alpine temps may reactivate a layer of small facets, mixed forms and in some places surface hoar that overlies a rain crust down 10 to 120 cm. Surface avalanches in motion may also step down to this interface.</span><span class="s_AA239
A series of crusts in the upper and middle snowpack may be reactivated by the storm.  Surface avalanches in motion have the potential to step down creating large destructive avalanches.
A crust formed in mid November remains sensitive to human triggering, especially in thin spots near rock outcroppings. Surface avalanches in motion may step down to this interface too.
A buried surface hoar/ crust layer demands respect. It has been easy to trigger, even from a distance. As new snow builds above this weakness, avalanches are expected to become larger and easier to trigger.
A buried surface hoar/ crusts layer demands respect. It is easy to trigger persistent slabs, even from a distance. New snow will add stress to this volatile layer.
A buried surface hoar/ crusts layer demands respect. It is easy to trigger persistent slabs, even from a distance.
A buried surface hoar/ crust layer demands respect. It has been easy to trigger persistent slabs with light loads (like a person). This layer is down about 30-50 cm in most areas, but may be deeper where wind slabs have developed.
Several persistent weak layers exist in the upper to middle snowpack. It might take a large load (like a cornice fall), major weather input (heavy rain or snow), or a rider hitting the sweet spot to trigger this problem.&nbsp;
A series of crusts in the upper and middle snowpack may be reactivated by the storm. Surface avalanches in motion have the potential to step down creating large destructive avalanches.
A crust buried in mid November remains sensitive to human triggering, especially in thin spots near rock outcroppings. Surface avalanches in motion may step down to this interface.
A persistent weak layer of surface hoar and/or facets on a crust exists 40-90 cm below the surface. This has been reactive with the recent storm snow consolidating and human triggering remains a concern.
A crust that formed in mid-December is buried near 70 cm down. Not much is known about its distribution. Dig down and test weak layers and watch for this condition as you transition from below treeline to treeline and above.
A persistent weak layer, buried 30-80 cm below the surface continues to be a concern and skier/ rider triggering is likely.
There are a couple of persistent weak layers in the top 80 cm of the snowpack, including surface hoar on sheltered shady slopes and a crust/facet layer. These weaknesses could wake up with heavy loading from rain and snow on Sunday/Monday.
Several persistent weak layers exist in the upper to middle snowpack. It might take a large load (like a cornice fall), major weather input (heavy rain or snow), or a rider hitting the sweet spot to trigger this problem.&nbsp;
A series of crusts in the upper and middle snowpack may wake up with loading from snow or wind. Surface avalanches in motion have the potential to step down creating large destructive avalanches.
A crust buried in mid November remains sensitive to human triggering, especially in thin spots near rock outcroppings. Surface avalanches in motion may step down to this interface.
Persistent slab problems have been of particular concern in the south of this region at elevations between 1600 m and 2100 m. The culprit is a crust with weak surface hoar crystals. This layer is found to the north as well, but is harder to trigger.
An easily-triggered and prominent layer of surface hoar overlying a crust is buried around 60-80 cm below the surface and is still producing avalanches, especially on steep, convex terrain around treeline.
An easily-triggered and prominent layer of surface hoar overlying a crust is buried typically around 60-80 cm below the surface and is still producing avalanches, especially on steep, convex terrain around treeline.
A buried crust/surface hoar layer demands respect. It has been easy to trigger with light loads (like a person). This layer is down about 30-50 cm in most areas, but may be deeper where wind slabs have developed.
A buried surface hoar/ facet/ crust interface is buried 70 cm down. Dig down and test weak layers and watch for this condition as you transition from treeline and above. Conservative terrain selection required.
A persistent weak layer, buried 30-80 cm below the surface continues to be a concern and skier/ rider triggering is likely.
A persistent weak layer of surface hoar and/or facets on a crust exists 40-90 cm below the surface. This has been reactive with the recent storm snow consolidating and human triggering remains a concern.
Heavy loading from new snow, wind, and/or rain could overload persistent weaknesses in the upper 100 cm of the snowpack. The resulting avalanche would be very large and destructive.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Heavy loading from new snow, wind, and/or rain could overload persistent weaknesses in the upper 100 cm of the snowpack. The resulting avalanche would be very large and destructive.  </span><span class="s_AA239A9B">
Loading by new snow and wind could be enough to trigger deeper persistent weaknesses in the snowpack.&nbsp;
New loading from snowfall and strong winds could 'wake up' deeper persistent weaknesses and produce isolated very large avalanches. 
The mid-December persistent weak layer of surface hoar and crust continues to be a concern for human triggering. This weak layer has a variable distribution across the region. Dig down and find out if you have this layer and how it reacts in tests.
The mid-December crust and surface hoar layer is now buried between 50-80 cm and continues to be a concern for triggering by light additional loads like a skier/rider.
The mid-December persistent weak layer of surface hoar and crust continues to be a concern for human triggering and remote triggering from adjacent terrain.&nbsp;
The persistent weak layer has been reported to be variable across this region. If the layer exists in your area, it may be easy to propagate long fractures resulting in large avalanches. Dig down to locate and evaluate the weak layer.
A persistent weak layer of surface hoar and/or facets on a crust exists 40-90 cm below the surface. This has been reactive with the recent storm snow consolidating and human triggering remains a concern.
A crust which formed in December should remain on your radar as it has recently produced large avalanches in the south of the region.&nbsp; Dig down and test weak layers before committing to a line.
A widespread persistent weak layer continues to react to light loads with the potential for large avalanches. Conservative terrain selection remains critical.
Heavy loading from new snow, wind, and rain could overload persistent weaknesses in the top 1 m of the snowpack, leading to very large and destructive avalanches.&nbsp;
There are a couple buried persistent weak layers in the upper and mid snowpack, primarily in northern areas like Bear Pass and Ninginsaw Pass.
New loading from snowfall and strong winds could 'wake up' deeper persistent weaknesses and produce isolated very large avalanches.
The developing storm slab may be enough load to trigger the persistent weak layer. Storm slab avalanches in motion may step down to the deeply buried weak layer resulting in large avalanches.
The developing storm slab will add to the load above the mid-December persistent weak layer. This may not be enough load to trigger naturally, but may increase propagation distance and the likelihood of remote triggering.
The mid-December persistent weak layer of surface hoar and crust continues to be a concern for human triggering. Storm slabs avalanches in motion may step down to this deeply buried weak layer.
The developing new storm slab may be enough load to increase the likelihood of triggering the mid-December weak layer.
This weak layer continues to produce avalanches under light loads. With the added stress of the new snow, avalanches at this interface could be large and destructive.
Heavy loading from new snow, wind, and rain could overload persistent weaknesses in the top 1 m of the snowpack, leading to very large and destructive avalanches.
="s_3FE45715">Heavy loading from new snow, wind, and rain could overload persistent weaknesses in the top 1 m of the snowpack, leading to very large and destructive avalanches.
There are a couple buried persistent weak layers in the upper and mid snowpack, primarily in northern areas like Bear Pass and Ninginsaw Pass. The weight of the new snow may increase the likelihood of triggering one of these layers.
The developing storm slab will add to the load above the mid-December persistent weak layer. This may not be enough load to trigger naturally, but may increase propagation distance and the likelihood of remote triggering.
New loading from snowfall and strong winds could 'wake up' deeper persistent weaknesses and produce isolated very large avalanches.
The mid-December persistent weak layer may release naturally due to the new load of storm snow, or be triggered by storm slab avalanches in motion.
The mid-December persistent weak layer of surface hoar and crust continues to be a concern for human triggering. Storm slabs avalanches in motion may step down to this deeply buried weak layer.
The developing storm slab may be enough load to trigger the persistent weak layer. Storm slab avalanches in motion may step down to the deeply buried weak layer resulting in large avalanches.
A weak layer which formed in December continues to produce avalanches under light loads, and is now buried by up to 100cm of snow. With the added stress of the new snow, avalanches at this interface are more likely, and could be highly destructive.
="s_3FE45715">A problematic layer of weak surface hoar on a hard crust continues to produce avalanches under light loads.  Now down around a meter below the surface, avalanches at this interface are still likely and could be highly destructive.
The new storm slab will add to the load above the mid-December persistent weak layer. This may not be enough load to trigger naturally, but may increase propagation distance and the likelihood of remote triggering.
Persistent weak layers down around 1m remain a concern. A smaller avalanche may step down to one of these layers or a heavy trigger like a cornice fall may be able to trigger one of these layers.
The new storm slab may be enough load to trigger the persistent weak layer. Storm slab avalanches in motion may step down to the deeply buried weak layer resulting in large avalanches.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Persistent weak layers down around 1m remain a concern. A smaller avalanche may step down to one of these layers or a heavy trigger like a cornice fall may be able to trigger one of these layers.</span><span class="s_AA239
The mid-December persistent weak layer of surface hoar and crust continues to be a concern for human triggering. Storm slabs avalanches in motion may step down to this deeply buried weak layer.
The mid-December persistent weak layer may release naturally due to the new load of storm snow, or be triggered by storm slab avalanches in motion.
There are a couple buried persistent weak layers in the upper and mid snowpack, primarily in northern areas like Bear Pass and Ninginsaw Pass. The weight of the new snow may increase the likelihood of triggering one of these layers.
New loading from snowfall and strong winds could 'wake up' deeper persistent weaknesses and produce isolated very large avalanches.
A crust/surface hoar combo which formed in December should remain on your radar. In places where the overlying slab is well developed, large and destructive avalanches remain possible.
There is potential to trigger avalanches on a weak layer buried 80-100 cm deep. Be vary wary of slopes that did not slide slide during the last storm and be aware of the potential for triggering slabs from a distance.
There are a couple buried persistent weak layers in the upper and mid snowpack, primarily in northern areas like Bear Pass and Ninginsaw Pass. The weight of the new snow may increase the likelihood of triggering one of these layers.
There are a couple buried persistent weak layers in the upper and mid snowpack. The weight of the new snow may increase the likelihood of triggering one of these layers.
Persistent weak layers down over 1m remain a concern. A smaller avalanche may step down to one of these layers or a heavy trigger like a cornice fall may be able to trigger one of these layers.
The persistent weak layer of buried surface hoar and crust continues to be a concern for remote and human triggering. This layer is now down more than a metre and may result in very large and destructive avalanches.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The persistent weak layer of buried surface hoar and crust continues to be a concern for remote and human triggering. This layer is now down about 50-70 cm and may result in very large and destructive avalanches.</span><span class="s_AA239A9B">
Persistent weak layers down over 1m remain a concern. A smaller avalanche may step down to one of these layers or a heavy trigger like a cornice fall may be able to trigger one of these layers.
The persistent weak layer of surface hoar and crust that was buried in mid-December continues to be a concern for human and remote triggers. This weak layer is more than three weeks old and still gives easy shears in some snow profile tests.
The mid-December persistent weak layer of buried surface hoar and crust continues to be likely to trigger from human activity. Snow profile tests on this layer continue give moderate to hard sudden planar results.
There is potential to trigger avalanches on a weak layer buried 80-100 cm deep. Be vary wary of slopes that did not slide slide during the last storm and be aware of the potential for triggering slabs from a distance.
A crust/surface hoar combo, 50-80 cm deep, should remain on your radar. This weakness produced large slab avalanches during and just after the recent storm.
Two persistent layers in the snowpack remain a concern. These are down around 60cm and 120cm. Triggering these layers is unlikely where the surface crust is supportive but use caution anywhere you are breaking through the crust.
Two persistent layers in the snowpack remain a concern. These are down around 60cm and 120cm. Triggering these layers is unlikely where the surface crust is supportive but use caution anywhere you are breaking through the crust.
There are a couple persistent weak layers in the middle of the snowpack. Heavy triggers like cornice falls or smaller avalanches have the potential to trigger one of these deeper layers. These layers were most reactive in the north of the region.
="s_3FE45715">There are a couple persistent weak layers in the middle of the snowpack. Heavy triggers like cornice falls or smaller avalanches have the potential to trigger one of these deeper layers. These layers were most reactive in the north of the region.
A persistent weakness buried mid-December is primed for human triggers in specific areas. Watch for signs of instability especially during daytime warming.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
A crust/surface hoar combo, 50-80 cm deep, should remain on your radar. This weakness produced large slab avalanches during and just after the recent storm.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
Heavy triggers like cornice falls or smaller avalanches have the potential to trigger one of the deeper persistent weak layers. These layers were most reactive in the north of the region recently.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
A buried persistent weak layer (down 80-100 cm) has been responsible for numerous large natural and rider triggered avalanches this week. Triggering remains a concern with the potential for creating large high-consequence slides.
A buried persistent weak layer (down 80-100 cm) has been responsible for numerous large natural and rider triggered avalanches this week. Triggering remains a concern with the potential for creating large high-consequence slides.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
A persistent weakness buried mid-December is primed for human triggers and wide propagations producing very large avalanches. Remote triggering from flat terrain and step-down from shallower weaknesses makes this problem especially tricky to manage.
Rider triggering is unlikely at this time, but a  larger trigger such as a small avalanche or a cornice failure might trigger deeper instabilities.
The buried storm slab should be bonding well with the mild temperatures, but still remains a serious consideration. A small avalanche could trigger this buried dense slab, and produce a large destructive avalanche.
Continued skier-triggered avalanche activity is a clear indication that weak layers, buried up to 120cm below the surface, have not gone away. I'd remain conservative in my terrain selection, and exercise cautious group management.
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</style><p class="p_CC664AAA"><span class="s_1681A555">A persistent weakness buried mid-December is spotty in distribution and widely variable with regard to reactivity which makes management tricky.&nbsp; It remains most&nbsp; prevalent at and below treeline where human triggered avalanches are most likely.</span><span class="s_AA239
This problem seams to be most prevalent at and below 1800m. It's an unusual setup, but it may actually be less sensitive in the Alpine.
="s_3FE45715">A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains VERY problematic at and below treeline where the snowpack structure is primed for human triggering.
The persistent weakness buried mid-Dec is spotty in distribution and widely variable with regard to reactivity which makes management tricky. It remains most prevalent at and just below treeline where human triggered avalanches are most likely.
Whumpfing and remotely triggered avalanches are strong indications that persistent weak layers have not gone away. Large avalanches are still possible.
A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains problematic at and just below treeline where the snowpack structure is primed for human triggering.
A small avalanche or a cornice failure might trigger deeply buried instabilities.
A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains very problematic at and just below treeline where the snowpack structure may be primed for human triggering.
A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains VERY problematic at and just below treeline where the snowpack structure may be primed for human triggering.
="s_3FE45715">Persistent slabs can still be triggered by a person in the right spot. These could be surprisingly large. Overall the chances of triggering have dropped, but consequences remain high.
This mid layer crust facet combination will take a long time to go away.&nbsp; Rapid warming, rapid loading, or an avalanche event could bring this dragon back to life.
A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering.
A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering.
The persistent weakness buried mid-Dec is spotty in distribution and widely variable with regard to reactivity which makes management tricky. It remains most prevalent at and just below treeline where human triggered avalanches are most likely.
A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering.
A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering.
A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering.
Persistent slabs may be triggered by the weight of a person or snowmobile in specific areas. Most likely trigger points are where the snowpack transitions from thick to thin, around rocks and trees, and on steep convex rolls.
The persistent weakness buried mid-Dec is spotty in distribution and widely variable with regard to reactivity which makes management tricky. It remains most prevalent at and just below treeline where human triggered avalanches are most likely.
A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering.
This weakness is widely variable in depth and seems to be mostly around tree-lane and below . It could be triggered by a small wind-slab avalanche or the weight of a snow machine.
Wind slab avalanches may be able to trigger deeper weak layers. Persistent slabs may also be triggered by the weight of a person or snowmobile in specific areas such as thin spots or convexities in the slope.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The mid-December weak layer remains problematic at and below treeline where the snowpack structure may still be primed for human triggering in some areas.  The weight of the new snow may increase the reactivity of this layer. </span><span class="s_AA239
The mid-December weak layer remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering in some areas.  The weight of the new snow may increase the reactivity of this layer.
="s_3FE45715">The mid-December weak layer remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering in some areas. The weight of the new snow may increase the reactivity of this layer.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The mid-December weak layer remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering in some areas.  The weight of the new snow may increase the reactivity of this layer. </span><span class="s_AA239
This weakness is widely variable in depth and seems to be mostly around tree-line and below . It could be triggered by a small wind-slab avalanche or the weight of a snow machine.
="s_3FE45715">Wind slab avalanches may be able to trigger deeper weak layers, creating surprisingly large avalanche. Persistent slabs may also be triggered by the weight of a person or snowmobile in specific areas such as thin spots or convexities in the slope.
A persistent weak layer is widely variable in depth. It could be triggered by a person or snowmobile hitting a sweet spot, creating a surprisingly large avalanche.
The mid-December weak layer remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering in some areas. The weight of the new snow may increase the reactivity of this layer.
The mid-December weak layer remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering in some areas. The weight of the new snow may increase the reactivity of this layer.
The weight of the new snow, or an avalanche in motion, may be the tipping point for renewed destructive activity on weak layers which formed in December.
Although less likely to trigger, persistent weak layers are capable of producing large and destructive avalanches. Use increased caution around big, unsupported slopes.
The mid-December weak layer remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering in some areas. The weight of the new snow may increase the reactivity of this layer.
The mid-December weak layer remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering in some areas. The weight of the new snow may increase the reactivity of this layer.
New snow and wind may spark renewed activity on weak crystals buried in mid-December. Although less likely, avalanches at this interface would likely be destructive in nature.
Although less likely to trigger, persistent weak layers are capable of producing large and destructive avalanches. Use increased caution around big, unsupported slopes.
Deeply buried snowpack weaknesses are most likely to be triggered from shallow snowpack areas, or with a very heavy load like a cornice fall or airborne snowmobile landing.
Although less likely to trigger, persistent weak layers are capable of producing large and destructive avalanches. Use increased caution around big, unsupported slopes, especially in the south of the region.
The mid-December weak layer remains problematic at and just below treeline where the snowpack structure may still be primed for human triggering in some areas. The weight of the new snow may increase the reactivity of this layer.
New snow and wind may spark renewed activity on weak crystals buried in mid-December. Although less likely to trigger, avalanches at this interface could be destructive in nature.
Although less likely to trigger, avalanches failing on persistent weak layers formed in December could be destructive in nature.
Reports suggest the mid-December weak layer has become less likely to trigger. That said, the weight of the new snow or an avalanche in motion may increase the reactivity of this potentially destructive layer.
Recent storm loading may spark renewed activity on weak crystals buried in mid-December. Although less likely to trigger, avalanches at this interface could be destructive in nature.
Two persistent weakness remain a concern in the mid-pack. The early-Jan and mid-Dec layers are down around 50cm and 80cm, respectively.&nbsp; Human triggering remains possible or smaller avalanches may step-down to one of these layers.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 40 and 60 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 25 and 45 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 30 and 50 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 40 and 60 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
Around 30cm of snow sits on the widespread mid-Jan surface hoar/crust layer. The distribution of the slab reactivity is still uncertain so use an investigative approach.  Watch for signs of a widespread instability in your local area.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 30 and 50 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 25 and 45 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 40 and 60 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 40 and 60 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
~30cm of snow sits on the widespread mid-Jan surface hoar/crust layer. In wind loaded areas, the slab may be around 50cm thick. The reactivity of the slab may not have reached full potential in many areas but is expected to with warming and new load.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 30 and 50 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 25 and 45 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 40 and 60 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 40 and 60 cm below the surface. This layer appears to be widely found in this region and many recent avalanches were triggered on it.
~30cm of snow sits on the widespread mid-Jan surface hoar/crust layer. In wind loaded areas, the slab may be up to 50cm thick. The reactivity of the slab may not have reached full potential in many areas but is expected to with new load and warming.
Touchy surface hoar down 20-30cm is well preserved throughout the region and has likely not seen critical loading in most areas.&nbsp; This storm is expected to produce widespread activity on this layer.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 40 and 60 cm below the surface. This layer was active during the last storm cycle and is likely to respond again to additional loading.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 25 and 50 cm below the surface. This layer was active during the last storm cycle and is likely to respond again to additional loading or warming
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 40 and 60 cm below the surface. This layer was active during the last storm cycle and is likely to respond again to additional loading.
A weak layer comprising of feathery surface hoar crystals and on south aspects a crust is buried between 40 and 60 cm below the surface. This layer was active during the last storm cycle and is likely to respond again to additional loading.
A weak layer of surface hoar crystals is buried between 50 and 80 cm below the surface, on south aspects this layer sits above a crust. This layer will take time to adjust to the new snow load and warm temperatures and can produce large avalanches.
A weak layer of surface hoar crystals is buried between 60 and 90 cm below the surface, on south aspects this layer sits above a crust. This layer will take some time to adjust to the new snow and warm temperatures and can produce large avalanches.
A weak layer of surface hoar is buried between 60 and 90 cm below the surface, on south aspects this layer sits above a crust. This layer produced has produced large avalanches and it will take some time to adjust to the new snow and warm conditions.
A weak layer of surface hoar crystals is buried between 40 and 80 cm below the surface, on south aspects this layer sits above a crust. This layer has the will take some time to adjust to the new load and warming temperatures
="s_3FE45715">A weak layer of surface hoar above a crust is buried by 40 to 85 cm of snow. It has the potential to be triggered naturally or by humans and produce large avalanches. Conditions are likely to be especially touchy in wind loaded features.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">A weak layer of surface hoar above a crust is buried by 45 to 80 cm of snow. This layer remains touchy. It has the potential to be triggered naturally or by humans and produce large avalanches.
="s_3FE45715">A weak layer of surface hoar above a crust is buried by 40 to 70 cm of snow. This layer remains touchy. It has the potential to be triggered naturally or by humans and produce large avalanches.
="s_3FE45715">A weak layer of surface hoar above a crust is buried by 40 to 70 cm of snow.  This layer remains touchy.  It has the potential to be triggered naturally or by humans and produce large avalanches.</span><span class="s_3FE45
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">A layer of weak surface hoar siting on a crust is buried by 20 to 50 cm of snow.  I anticipate that natural avalanches will remain possible and human triggered avalanche likely as this layer adjusts to the warm temperatures</span><span class="s_AA239
="s_3FE45715">A layer of weak surface hoar siting on a crust is buried by 20 to 50 cm of moist snow. This layer will remain a concern as it adjusts to the warm temperatures.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Snow, rain, wind and warm temperatures are stressing a layer of weak surface hoar siting on a crust buried 40 to 80 cm down.</span><span class="s_AA239
="s_3FE45715">A layer of weak surface hoar siting on a crust is buried by 20 to 50 cm of snow.  This layer may continue to produce avalanches as it adjusts to the warm temperatures.</span><span class="s_3FE45
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">A layer of weak surface hoar siting on a crust is buried by 40 to 70 of moist snow has been responsible for most of the recent avalanche activity.</span><span class="s_AA239
="s_3FE45715">A layer of weak surface hoar siting on a crust is buried by 20 to 50 of moist snow has been responsible for most of the recent avalanche activity.
="s_3FE45715">At upper elevations a layer of surface hoar on a crust buried 40 to 80 cm down may still be capable of producing avalanches especially in wind loaded features.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">A layer of weak surface hoar siting on a crust is buried by 40 to 80 of moist snow has been responsible for most of the recent avalanche activity.</span><span class="s_AA239
="s_3FE45715">In areas where the snowpack is not capped by a supportive crust a layer of surface hoar buried 40 to 70 cm down may still be capable of producing large avalanches.
The persistent weak layer that was buried in mid-January continues to be the sliding layer for natural and remotely triggered avalanches.
The persistent weak layer that was buried in mid-January continues to be the sliding layer for remotely triggered avalanches.
The persistent weak layer that was buried in mid-January has been the sliding layer for recent remotely triggered avalanches.
A persistent weakness buried mid-December is spotty in distribution and reactivity, but remains problematic at and below treeline where the snowpack structure is primed for human triggering.
Surface hoar is considered a long term problem. Its exact location in the terrain is still a question. Be prepared to look for it as you travel. Using small terrain as &quot;tester&quot; slopes will help indicate the reactivity.
The weakness buried early-December is becoming more stubborn to trigger, but lingering pockets of buried surface hoar and facets may maintain touchy conditions on sheltered slopes, especially in the 1700-2100m elevation range.
The weakness buried early-December is becoming more stubborn to trigger, but lingering pockets of buried surface hoar may maintain touchy conditions on sheltered slopes in the northern part of the region, especially in the 1400-1800m elevation range.
Human triggered avalanches are still possible, especially on North facing terrain at, and just below tree-line due to a layer of buried surface hoar.
The new snow may sitting on a buried layer of surface hoar. Where it exists, I suspect that it is buried close to a critical depth for human triggered avalanches.
A layer of buried surface hoar can be found 70 to 130cm below the snow surface and is expected to be most sensitive to human triggering below treeline between 1400 and 1800m. Plan to travel below treeline as conservatively as possible.
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</style><p class="p_CC664AAA"><span class="s_3FE45715"> A layer of buried surface hoar can be found 70 to 130cm below the snow surface and is expected to be most sensitive to human triggering below treeline between 1400 and 1800m.  Plan to travel below treeline as conservatively as possible.</span><span class="s_AA239
="s_3FE45715">A layer of buried surface hoar can be found 70 to 110cm below the snow surface and is expected to be most sensitive to human triggering below treeline between 1400 and 1800m. Plan to travel below treeline as conservatively as possible.
="s_3FE45715">A layer of buried surface hoar can be found 35 to 80cm below the snow surface and is expected to be most sensitive to human triggering below treeline between 1400 and 1800m. Plan to travel below treeline as conservatively as possible.
Surface hoar at treeline and below is buried down 30-40cm.&nbsp; Treeline the hoar is more spotty on only N and E aspects.
The weakness buried early-December is becoming more stubborn to trigger, but lingering pockets of buried surface hoar and facets may maintain touchy conditions on sheltered slopes, especially in the 1700-2100m elevation range.
A layer of buried surface hoar can be found 70 to 110cm below the snow surface and has been most sensitive to human-triggering below treeline between 1400 and 1800m. Plan to travel below treeline as conservatively as possible.
Limited alpine visibility may push riders below treeline where a reactive layer of buried surface hoar has been most sensitive to human triggering between 1400 and 1800m. Savvy folks will seek out well supported simple terrain at treeline Sunday.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Limited alpine visibility may push riders below treeline where a reactive layer of buried surface hoar has been most sensitive to human triggering between 1400 and 1800m.  Savvy folks will seek out well supported simple terrain at treeline Sunday.</span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Limited alpine visibility may push riders below treeline where a reactive layer of buried surface hoar has been most sensitive to human triggering between 1400 and 1800m.  Savvy folks will seek out well supported simple terrain at treeline Sunday.</span><span class="s_AA239
Human triggered avalanches on a layer of buried surface hoar have become less likely. However, avalanches at this interface could be destructive in nature. Dig down and test for this weakness before committing to any steep lines.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Limited alpine visibility may push riders below treeline where a reactive layer of buried surface hoar has been most sensitive to human triggering between 1400 and 1800m.  Savvy folks will seek out well supported simple terrain at treeline Sunday.</span><span class="s_AA239
The Dec 4th persistent weak layer, buried 50 to 70cm at Treeline, remains a concern in the snowpack, as it continues to give results in snowpack stability tests. Open slopes and convex terrain are areas with potential for human-triggering.
="s_3FE45715">The weak layers buried in early-Dec and mid-Nov in the middle of the snowpack have become difficult to trigger but are still a concern in isolated areas. Heavy triggers like cornices or avalanches stepping down could result in very large avalanches.
Human triggered avalanches on a layer of buried surface hoar have become less likely. However, avalanches at this interface could be destructive in nature. Dig down and test for this weakness before committing to any steep lines.
="s_3FE45715">A layer of buried surface hoar can be found below treeline between 1400m and 1800m. Test profiles suggest this interface varies widely in reactivity and remains sensitive to human triggering.
A layer of buried surface hoar can be found below treeline between 1400m and 1800m. Test profiles suggest this interface varies widely in reactivity and remains sensitive to human triggering.
="s_3FE45715">A layer of buried surface hoar can be found below treeline between 1400m and 1800m. Test profiles suggest this interface varies widely in reactivity and remains sensitive to human triggering.
="s_3FE45715">A layer of buried surface hoar can be found below treeline between 1400m and 1800m. Test profiles suggest this interface varies widely in reactivity and remains sensitive to human triggering.
The Dec 4 persistent weak layer is buried up to 70cm at Treeline and potential for human-triggering remains. This layer and it's sensitivity to triggering are highly variable. Take the time to explore the snowpack as you travel through the terrain.
="s_69982360">A layer of buried surface hoar can be found at and below tree line and remains sensitive to human triggering. It is most widespread between 1400m and 1800m. A buried sun crust and facets can be found in the alpine.
span class="s_AD4A7DB8">A layer of buried surface hoar can be found below treeline between 1400m and 1800m. Test profiles suggest this interface varies widely in reactivity indicating that it may still be sensitive to human triggering.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_AD4A7DB8">A layer of buried surface hoar can be found below treeline between 1400m and 1800m. Test profiles suggest this interface varies widely in reactivity however it may remain sensitive to human triggering.
Human triggered avalanches on a layer of buried surface hoar have become less likely. However, avalanches at this interface could be destructive in nature. Dig down and test for this weakness before committing to any steep lines.
At the moment, a lack of a windslab is limiting any avalanche problem below treeline. When the surface condition changes, expect the surface hoar to wake up. Be sure to re-assess as you approach treeline. Watch for stiffer slabs as you travel.
span class="s_CDCF4B37">A layer of buried surface hoar can be found at and below tree line and remains sensitive to human triggering. It is most widespread between 1400m and 1800m.  Watch out for signs of instability like wumphing to guide you through this elevation band.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_AD4A7DB8">A layer of buried surface hoar can be found below tree-line between 1400m and 1800m.  Test profiles indicate that this interface may still be sensitive to human triggering.</span><span class="s_AA239
span class="s_AD4A7DB8">A layer of buried surface hoar can be found below tree-line between 1400m and 1800m. Test profiles suggest this interface varies widely in reactivity indicating that it may still be sensitive to human triggering.
="s_3428770D">A layer of buried surface hoar can be found bellow treeline, between 1400m and 1800m. It remains sensitive to human triggering. Watch out for signs of instability like wumphing to guide you through this elevation band.
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</style><p class="p_CC664AAA"><span class="s_AD4A7DB8">A layer of buried surface hoar can be found bellow treeline, between 1400m and 1800m. It remains sensitive to human triggering. Watch out for signs of instability like wumphing to guide you through this elevation band. </span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_AD4A7DB8">A layer of buried surface hoar can be found bellow treeline, between 1400m and 1800m. It remains sensitive to human triggering. Watch out for signs of instability like wumphing to guide you through this elevation band. </span><span class="s_AA239
span class="s_AD4A7DB8">A layer of buried surface hoar can be found below tree-line between 1400m and 1800m. Test profiles indicate that this interface may still be sensitive to human triggering.
This problem is in wind prone areas below treeline and the upper reaches of treeline that are exposed to stronger, alpine winds. The slab density above the Dec4th layer will be a factor for avalanche potential. Stiffer slabs are more of a problem.
span class="s_AD4A7DB8">A layer of buried surface hoar can be found bellow tree-line, between 1400m and 1800m. It remains sensitive to human triggering. Watch out for signs of instability like wumphing to guide you through this elevation band.
span class="s_AD4A7DB8">A layer of buried surface hoar can be found below tree-line between 1400m and 1800m. Test profiles indicate that this interface may still be sensitive to human triggering.
span class="s_AD4A7DB8">A layer of buried surface hoar can be found bellow tree-line, between 1400m and 1800m. It remains sensitive to human triggering. Watch out for signs of instability like wumphing to guide you through this elevation band.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3428770D">A layer of buried surface hoar can be found below tree-line between 1400m and 1800m. Test profiles indicate that this interface may still be sensitive to human triggering.
span class="s_AD4A7DB8">A layer of buried surface hoar can be found between 1400m and 1800m. Watch out for signs of instability like wumphing to guide you through this elevation band.
span class="s_AD4A7DB8">A layer of buried surface hoar can be found between 1400m and 1800m. Watch out for signs of instability like wumphing to guide you through this elevation band.
span class="s_AD4A7DB8">A layer of buried surface hoar can be found between 1400m and 1800m. Watch out for signs of instability like wumphing to guide you through this elevation band.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_AD4A7DB8">A layer of buried surface hoar can be found between 1400m and 1800m. Use signs of instability like wumphing to guide you through this elevation band. </span><span class="s_AA239
A layer of buried surface hoar can be found between 1400m and 1800m. Use increased caution on steep roles on cut-blocks and in open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Use increased caution on steep roles in cut blocks and in open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Use increased caution on steep roles in cut blocks and in open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
Recent avalanche activity indicates that a layer of surface hoar buried in early December should still be on our radar. Although this layer has become less likely to trigger, I'd be wary of steep roles in cut-blocks and open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
Recent avalanche activity indicates that a layer of surface hoar buried in early December should still be on our radar. Although this layer has become less likely to trigger, I'd be wary of steep roles in cut-blocks and open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
="s_3428770D">A couple of buried weak layer of surface hoar should be on your radar. I would be suspect of steep unsupported slopes at tree-line unless I knew the layer did not exist or was now well bonded.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become unlikely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
A layer of buried surface hoar can be found between 1400m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
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</style><p class="p_CC664AAA"><span class="s_3428770D">A couple of buried weak layer of surface hoar should be on your radar. I would be suspect of steep unsupported slopes at tree-line unless I knew the layer did not exist or was now well bonded.</span><span class="s_AA239A9B">
A layer of buried surface hoar can be found between 1100m and 1800m. Although this layer has become less likely to trigger, I'd remain cautious on steep roles in cut-blocks and open glades below treeline.
="s_3428770D">A couple of buried weak layer of surface hoar should be on your radar. I would be suspicious of steep unsupported slopes at tree-line unless I knew the overlying snow had no slab properties, or that the weak layer does not exist in that location.
A layer of buried surface hoar can be found between 1400m and 1800m.&nbsp; A weak crust/facet/surface hoar layer is expected at higher elevations.&nbsp; Smaller avalanches may step down to these layers.
A prominent layer of buried surface hoar can be found between 1400m and 1800m. A weak crust/facet/surface hoar layer is expected to still be reactive in isolated areas at higher elevations. Smaller avalanches may step down to these layers.
A prominent layer of buried surface hoar can be found between 1400m and 1800m. A weak crust/facet/surface hoar layer is expected to still be reactive in isolated areas at higher elevations. Smaller avalanches may step down to these layers.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_CDCF4B37">A prominent layer of buried surface hoar can be found between 1400 m and 1800 m. A weak crust/facet/surface hoar layer is also expected to still be reactive in isolated areas at higher elevations. Smaller avalanches may step down to these layers.
A few buried surface hoar layers exist in the top 100cm of the snowpack. I would keep these on my radar on steep unsupported slopes, especially at treeline and below.
span class="s_CDCF4B37">Buried surface hoar can be found below treeline. A weak crust/facet/surface hoar layer may also still be reactive in isolated areas at higher elevations. Smaller avalanches may step down to these layers.
A few buried surface hoar layers exist in the top 100cm of the snowpack. I would keep these on my radar on steep unsupported slopes, especially at treeline and below.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_1681A555">A weak layer buried about 40-100 cm down remains reactive in snowpack tests in some areas. It has produced avalanches within the last week.
A few buried surface hoar layers exist in the top 100cm of the snowpack. I would keep these on my radar on steep unsupported slopes, especially at treeline and below.
A weak layer buried about 40-100 cm down remains reactive in snowpack tests in some areas. It has produced avalanches within the last week and could wake-up with the upcoming warm temperatures in the alpine.
A few buried surface hoar layers exist in the top 100cm of the snowpack. I would keep these on my radar on steep unsupported slopes, especially at treeline and below.
Several weak layers of surface hoar may be buried in the top 100 cm of the snowpack. Forecast warming of the storm slab above these weak layers is a concern for increased sensitivity to triggering and the possibility of longer fracture propagations.
Skiers have triggered four large persistent slab avalanches in the last couple of weeks. The weak layer is down 40-60 cm and exists at different elevations in different parts of the region.
Skiers have triggered four large persistent slab avalanches in the last couple of weeks. The culprit is surface hoar from early December down 40-60 cm. It exists at different elevations in parts of the region, but it is definitely out there!
This is the piece of the puzzle that won't let me drop the danger rating to LOW. The consequence of triggering a buried surface hoar weakness is high, although the likelihood of triggering seems to be getting lower.
This is the piece of the puzzle that won't let me drop the danger rating to LOW. The consequence of triggering a buried surface hoar weakness is high, although the likelihood of triggering seems to be getting lower.
Skiers have triggered four large persistent slab avalanches in the last couple of weeks. The culprit is surface hoar from early December down 40-60 cm. It exists at different elevations in various parts of the region, but it is definitely out there!
This persistent slab problem is not going to go away soon. It's a good time to dig a pit and test the reactivity of the slab before venturing into big terrain.
A few surface hoar layers buried in mid December are becoming unlikely to trigger; however, some snowpack tests are still showing sudden results. Use extra caution on steep, unsupported slopes at treeline and below.
Buried weak layers of surface hoar may be triggered by human activity. This problem is more likely in the area west of Kimberley, but may be found in shallow snowpack areas across the region.
A few surface hoar layers buried in mid December are becoming unlikely to trigger; however, some snowpack tests are still showing sudden results. Use extra caution on steep, unsupported slopes at treeline and below.
A few surface hoar layers buried in mid December are becoming unlikely to trigger; however, some snowpack tests are still showing sudden results. Use extra caution on steep, unsupported slopes at treeline and below.
Buried weak layers of surface hoar may be triggered by human activity. This problem is more likely in the area west of Kimberley, but may be found in shallow snowpack areas across the region.
Deeply buried weak surface hoar has not resulted in any reports of deep slab avalanches since the new year. This problem has become less likely, but still needs to be considered when choosing terrain.
A few surface hoar layers buried in mid December are becoming unlikely to trigger; however, some snowpack tests are still showing sudden results. Use extra caution on steep, unsupported slopes at treeline and below.
We have not had any new reports of avalanches on this persistent weak layer of surface hoar that is buried down 40-60 cm. Professional operations continue to monitor this weak layer because the consequences of triggering are high.
A low probability/ high consequence persistent slab problem still exists. Investigate your local snowpack.
A low probability/ high consequence persistent slab problem still exits. Investigate your local snowpack.
The early January surface hoar layer has been reactive to human triggers at ALL elevations in the Kootenay Boundary.
Weak surface hoar crystals which were buried at the beginning of January are variably reactive. This layer can surprise with nasty consequences in areas where the overlying slab is deep and cohesive.
="s_3FE45715">Numerous backcountry travelers have been surprised in recent days by a nasty layer of surface hoar. This layer has been especially reactive below 1800 m.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">Numerous backcountry travelers have been surprised in recent days by a nasty layer of surface hoar. This layer has been especially reactive below 1800 m.
Recent storm accumulations overlie a weak layer of surface hoar. Expect very touchy conditions in areas where the recent storm snow has settled into a cohesive slab.
The slab sitting over a volatile weak layer is primed for human triggering. It has been most reactive at and below treeline.
Numerous backcountry travelers have been surprised in recent days by a touchy layer of surface hoar. This layer has been especially reactive below treeline.
Recent storm accumulations overlie a weak layer of surface hoar. Touchy conditions are expected in areas where the recent storm snow has settled into a cohesive slab.
Recent storm snow has formed a volatile slab where it overlies buried surface hoar. Avalanches may be triggered remotely and be surprisingly large.
Weak surface hoar crystals which were buried at the beginning of January are variably reactive. This layer can surprise with nasty consequences in areas where the overlying slab is deep and cohesive.
In some parts of the region, the slab sitting over a volatile weak layer is primed for human triggering. It has been most reactive at and below treeline.
The slab sitting over a volatile weak layer is primed for human triggering. It has been most reactive at and below treeline.
The slab sitting over a volatile weak layer is primed for human triggering. It has been most reactive below treeline.
With each successive snowfall, a slab is slowly forming above a touchy buried weakness. This could be triggered by the weight of a person, even from a distance.
Recent storm accumulations overlie a weak layer of surface hoar. Touchy conditions may exist in areas where the recent storm snow has settled into a cohesive slab.
A couple layers of weak surface hoar down 60-100cm have been reactive to human-triggering and have the potential to result in large, destructive avalanches. Smaller avalanches can easily step down to these layers.
Up to 30cm of cohesive storm snow overlies a mix of weak crystals which seem most reactive at below treeline elevations west of the divide. Watch for triggering in steep open glades and in cut blocks.
Weak surface hoar crystals which were buried at the beginning of January are variably reactive. This layer can surprise with nasty consequences in areas where the overlying slab is deep and cohesive.
A couple layers of weak surface hoar down 40-60cm have been reactive to human-triggering and have the potential to result in large, destructive avalanches. Smaller avalanches can easily step down to these layers.
Buried surface hoar, down 60-100 cm, has been particularly touchy on shady aspects near treeline. Heavy loading will likely cause widespread natural avalanche activity on this interface on Thursday.&nbsp;
Expect heavy loading from snow, rain, and wind to overload buried surface hoar, potentially creating very large avalanches. This problem has been most active on shady slopes near treeline.
With each successive snowfall, a slab is gradually forming above a touchy buried weakness. This could be triggered by the weight of a person, even from a distance.
Some areas could see enough new snow and wind to create a slab over the buried surface hoar layer, currently 20-40 cm deep. Stay tuned to changing conditions and head out with options. 
Incoming snow on Thursday could be enough to tip the scales and produce a large avalanche cycle on the January 9th surface hoar interface. Some slides may step down to deeper weaknesses.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_A8FEC758">A volatile persistent slab has been failing with light loads. These slabs will probably get bigger and more reactive with the incoming storm. </span><span class="s_AA239
A volatile persistent slab has been failing with light triggers.
Weak surface hoar crystals which were buried at the beginning of January are variably reactive. This layer can surprise with nasty consequences in areas where the overlying slab is deep and cohesive.
A volatile persistent slab has been failing easily with light triggers. The size and likelihood of these should increase with the incoming storm.
Up to 30cm of cohesive storm snow overlies a mix of weak crystals which seem most reactive at below treeline elevations west of the divide. Watch for triggering in steep open glades and in cut blocks.
Recent storm accumulations overlie a weak layer of surface hoar. Although this layer seems to be variably reactive, touchy conditions may exist in areas where the recent storm snow has settled into a cohesive slab.
New snow, wind, and mild temperatures may have helped develop a cohesive slab, which overlies a variety of buried persistent weaknesses. It may be easy for riders to trigger this slab (where it exists), even from low angle terrain.
In many places, loading on the buried surface hoar layers has been incremental. This could make the problem trickier and will require discipline and conservative terrain choices. Other areas may have had enough load to tip off a natural cycle.
Thursday's storm may have helped clean out the mid-January surface hoar problem; however, wait a day or two to reassess the conditions before moving out into steeper terrain.&nbsp;
Heavy loading on Thursday may have tipped off a widespread avalanche cycle on the mid-January persistent weak layer; however, I would take a very conservative approach until we know the extent of this cycle and the status of this persistent weakness.
Surface hoar crystals which were buried at the beginning of January seem to be gaining strength around the Lizard Range. That said, observations have been limited throughout the region. I'd continue to test for this potentially destructive weak layer
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_A8FEC758">Numerous large persistent slabs have been triggered over the last few days. New storm loading will only accentuate this problem.
With each successive snowfall, a slab is gradually forming above a touchy buried weakness. This could be triggered by the weight of a person, even from a distance.
A warm, wet and windy storm forecast for Thursday will likely overload persistent weaknesses which lie up to 85cm below the surface. Destructive persistent slab avalanches will be particularly touchy at elevations where precipitation falls as rain.
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</style><p class="p_CC664AAA"><span class="s_A8FEC758">Numerous large persistent slabs have been triggered over the last few days on many aspects and elevations. New storm loading will only accentuate this problem.</span><span class="s_AA239
Numerous large persistent slabs have been triggered over the last few days on many aspects and elevations. New storm loading will only accentuate this problem.
Up to 30cm of cohesive storm snow overlies a mix of weak crystals which seem most reactive at below treeline elevations west of the divide. Watch for triggering in steep open glades and in cut blocks.
New snow has been slowly accumulating over a layer of facets and surface hoar and may now be primed for triggering in some areas.
It's possible that heavy snow and rain may have wiped out this problem in most, or even all areas. That being said, keep your guard up until we have more post-storm information.
Buried surface hoar, now 60 cm deep on average, is primed for triggering. It's possible for light loads to trigger slabs even from relatively low angle slopes. Be extra cautious near treeline where surface hoar is more likely to be preserved.&nbsp;
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3D0464D1">Numerous persistent slabs have been triggered this week. Even as the weather improves, this problem could remain touchy.
A slab has formed above a touchy buried weakness. This could be triggered by the weight of a person, even from a distance. Avalanches could be larger than expected.
This problem may still be found in places that did not see widespread avalanche activity. Be particularly caution in the northern part of the region between 1500 and 1900 m elevation. 
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3D0464D1">Numerous persistent slabs have been triggered this week. Even as the weather improves, this problem could remain touchy.</span><span class="s_AA239
Numerous persistent slabs have been triggered this week. Even as the weather improves, this problem could remain touchy.
The January surface hoar layer may become reactive with heavy loading from new snow and/or rain. An avalanche on this layer has the potential to be large and destructive.
A layer of surface hoar crystals buried at the beginning of January seems to be gaining strength around the Lizard Range. Observations have been limited throughout the region. Digging a pit to find and test this layer would&nbsp; be worth your time!
Up to 30cm of cohesive storm snow overlies a mix of weak crystals which seem most reactive, especially at and below treeline elevations west of the divide. Watch for triggering in steep open glades and in cut blocks.
New snow has been slowly accumulating over a layer of facets and surface hoar and may now be primed for triggering in some areas.
Buried surface hoar, now 60 cm deep on average, is primed for triggering. It's possible for light loads to trigger slabs even from relatively low angle slopes. Be extra cautious near treeline where surface hoar is more likely to be preserved.&nbsp;
Buried surface hoar remains primed for rider triggering, especially in the Northern part of the region where the snow line stayed below treeline during the recent storm. 
Large avalanches have been failing on buried persistent weak layers throughout the week. This problem will probably remain sensitive to human triggers for the next while.&nbsp;
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Large avalanches have been failing on buried persistent weak layers throughout the week. This problem will probably remain sensitive to human triggers for the next while.  </span><span class="s_AA239A9B">
The persistent slab has proven to be easily triggered by skiers and sleds, be aware of the possibility of triggering from a distance.
This persistent weak layer could be triggered by a wind or storm slab and result in a large, destructive avalanche
This weak layer is not going to go away anytime soon.  This is a good time to dig a pit before committing yourself to any big terrain.
Be cautious in terrain that has not had any tracks in it.&nbsp; The Jan. surface hoar is still a real concern.
A small storm or wind slab avalanche may awaken this sleeping persistent slab and trigger a large, destructive avalanche
Buried surface hoar remains primed for rider triggering, especially in the Northern part of the region where the snow line stayed below treeline during the recent storm.&nbsp;
Buried surface hoar, now 60 cm deep on average, is primed for triggering. It's possible for light loads to trigger slabs even from relatively low angle slopes. Be extra cautious near treeline where surface hoar is more likely to be preserved.&nbsp;
New snow has been slowly accumulating over a layer of facets and surface hoar and may now be primed for triggering in some areas.
Large avalanches have been failing on buried persistent weak layers throughout the week. This problem will probably remain sensitive to human triggers for the next while.&nbsp;
Large avalanches have been failing on buried persistent weak layers throughout the week. This problem will probably remain sensitive to human triggers for the next while.&nbsp;
This layer is still on the radar. An avalanche on this layer could be quite large and destructive.
The persistent weak layer might be triggered by a small or medium sized rider-triggered avalanche
A small avalanche could provide enough mass and force to trigger this deeper instability
This weak has not been reactive recently, but is still on the radar. A wind or storm slab avalanche could trigger this sleeping monster.
A small wind or storm slab avalanche might provide enough mass to trigger this deeper instability.
Large avalanches have been failing on a buried persistent weak layer down 40-80 cm. This problem will likely remain sensitive to human triggers for the next few days.
A small wind slab avalanche could produce enough mass to trigger a deeper instability
A small slide might trigger this slab and produce a large and destructive avalanche
This weakness may be hard to trigger, but a small to mid-sized avalanche might awaken this sleeping monster, and produce a large destructive avalanche.
Large avalanches have been failing on a buried persistent weak layer down 70-100 cm. This problem will likely remain sensitive to human triggers for the next few days.
Large avalanches have been failing on a buried persistent weak layer down 40-80 cm. This problem will likely remain sensitive to human triggers for the next few days.
Large avalanches have been failing on a buried persistent weak layer down 40-60 cm. This problem will likely remain sensitive to human triggers for the next few days.
New snow has been slowly accumulating over a layer of facets and surface hoar and may now be primed for triggering in some areas.
A warm, wet and windy storm is forecast to overload persistent weak layers which lie up to 100cm below the surface. Very large avalanches are expected at all elevation bands over the next few days.
Buried surface hoar remains primed for rider triggering, especially in the Northern part of the region where the snow line stayed below treeline during the recent storm.
This slab might be triggered by a small slide in the right location.
The slab above the persistent weak layer continues to be touchy, releasing naturally or with light additional loads like a single skier on adjacent terrain. Conservative terrain choices without overhead hazard are recommended at this time.
Persistent slab avalanches continue to release naturally and from small loads like skiers on adjacent terrain. The touchy slab continues to be a concern. Conservative terrain selection without overhead hazards is required at this time.
This buried surface hoar layer will be on the radar for a while longer.&nbsp; If triggered, it could produce a large destructive avalanche.
Loading from wind, snow, and rain, may increase the likelihood of triggering the slab above the buried persistent weak layer. Remote triggering continues to be a concern.
The Jan 3rd surface hoar / crust / facet combination now has a dense slab on top of it.
Rising freezing levels and increased loading from wind, snow, and rain, may increase the likelihood of triggering the buried weak layer of surface hoar.
Buried surface hoar remains primed for rider triggering in many areas including the Northern part of the region and Alison Pass. Forecast rain and wet snow will increase the likelihood of avalanches failing on this touchy weak layer.
A warm, wet and windy storm is overloading persistent weak layers which lie up to 100cm below the surface. Very large avalanches are expected at all elevation bands.
New snow has been slowly accumulating over a layer of facets and surface hoar and may now be primed for triggering in some areas.
Warming temperatures and new loading from wind, snow, and rain, may increase the likelihood of triggering a persistent slab avalanche. Remote triggering continues to be a concern and smaller avalanches have the potential step-down to a deeper layer.
Warming temperatures and new loading from wind, snow, and rain, may increase the likelihood of triggering a persistent slab avalanche. A small avalanche or a cornice failure have the potential to step-down to a deeper layer.
The slab above the persistent weak layer continues to be touchy, releasing naturally or with light additional loads like a single skier on adjacent terrain. Conservative terrain choices without overhead hazard are recommended at this time.
Natural avalanche activity may have stopped on this deeply buried weak layer. Human triggering from light loads continues to be a concern. Remote triggering and long fracture propagations are likely with this persistent weak layer.
Natural activity may have stopped on this weak layer, however human triggering continues to be likely. Remote triggering and long fracture propagations are also likely with this persistent weak layer.
Natural avalanche activity on this layer may have ended, but this layer continues to be a concern for human triggering. Remote triggering and long fracture propagations are likely with this weak layer.
Warming temperatures and new loading from wind, snow, and rain, may increase the likelihood of triggering a persistent slab avalanche. A small avalanche or a cornice failure have the potential to step-down to a deeper layer.
Buried surface hoar remains primed for rider triggering in many areas, especially in the Northern part of the region. Forecast rain and wet snow will increase the likelihood of avalanches failing on this touchy weak layer.
A warm, wet and windy storm has overloaded persistent weak layers which lie more than 100cm below the surface. Even if the storm tapers-off on Thursday, I'd give the snowpack a few days to adjust to the new load before pushing into steeper terrain.
New snow has been slowly accumulating over a layer of facets and surface hoar. In some areas, recent rain may have destroyed the layer. In other areas, the overlying slab may be primed for human triggering.
Surface hoar buried at the beginning on January remains a concern for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab particularly tricky to manage.
The likelihood of triggering a buried weak layer is slowly dropping but if triggered, these layers can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.
The likelihood of triggering the early-Jan weak layer is slowly dropping but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer
Surface hoar buried at the beginning of January remains primed for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab particularly tricky to manage.
Surface hoar buried at the beginning on January remains a concern for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab particularly tricky to manage.
Surface hoar buried at the beginning on January remains a concern for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab particularly tricky to manage.
The likelihood of triggering a buried weak layer is slowly dropping but if triggered, these layers can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.
Deep and destructive persistent slab avalanches may remain a concern in high elevation terrain (especially in the north of the region) as the snowpack adjusts to recent heavy storm loading.
New snow has been slowly accumulating over a layer of facets and surface hoar. In some areas, recent rain may have destroyed the layer. In other areas, the overlying slab may be primed for human triggering.
Deep and destructive persistent slab avalanches will remain a concern in many places as the snowpack adjusts to recent heavy storm loading.
New snow has been slowly accumulating over a layer of facets and surface hoar. In some areas, recent rain may have destroyed the layer. In other areas, the overlying slab may be primed for human triggering.
The likelihood of triggering deeply buried surface hoar layers should decrease over the next few days. However, the layer remains touchy in many areas and could surprise with disastrous consequences.
Surface hoar buried at the beginning of January remains primed for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab particularly tricky to manage.
Surface hoar buried at the beginning of January remains primed for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab particularly tricky to manage.
Surface hoar buried at the beginning on January remains a concern for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab particularly tricky to manage.
Surface hoar buried at the beginning on January remains a concern for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab particularly tricky to manage.
The persistent weak layer continues to give sudden planar results in snowpack tests in the north of the region. A couple of large natural avalanches in the Lizard-Flathead region suggest that the distribution may be variable.
A couple of recent large natural avalanches suggest that triggering the deeply buried weak layer continues to be likely in isolated terrain features. Avalanches failing on this layer can be large and destructive.
The persistent weak layer of surface hoar may continue to be triggered by large loads or small loads in shallow or weak areas.
The likelihood of triggering deeply buried surface hoar layers should decrease over the next few days. However, the layer remains touchy in many areas and could surprise with disastrous consequences.
New snow has been slowly accumulating over a layer of facets and surface hoar. In some areas, recent rain may have destroyed the layer. In other areas, the overlying slab may be primed for human triggering.
="s_3FE45715">Surface hoar buried at the beginning of January remains primed for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab problem particularly tricky to manage.
Surface hoar buried at the beginning of January remains primed for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab problem particularly tricky to manage.
Surface hoar buried at the beginning of January remains reactive to human triggers. The potential for widespread propagation and remote triggering makes this persistent slab problem particularly tricky to manage.
Surface hoar buried at the beginning on January remains a concern for human triggers. The potential for widespread propagation and remote triggering makes this persistent slab particularly tricky to manage.
This persistent weak layer is probably now best described as a low probability but high consequence problem. Dig down (80-120 cm) to see if the surface hoar exists in your area.
The likelihood of triggering the buried weak layer is slowly dropping but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.
The likelihood of triggering the buried weak layer is slowly dropping but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.
The likelihood of triggering deeply buried surface hoar layers may have decreased; however, the layer remains touchy in many areas and could surprise with disastrous consequences.
New snow has been slowly accumulating over a layer of facets and surface hoar. In some areas, recent rain may have destroyed the layer. In other areas, the overlying slab may be primed for human triggering.
The likelihood of triggering the buried weak layer is slowly dropping but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.
The likelihood of triggering the buried weak layer is slowly dropping but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.
The persistent weak layer of buried surface hoar on the west side of the region and a buried crust/facet combination on the east side of the region continue to be a concern for human triggering, or from triggering by storm slab avalanches in motion.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">This persistent weak layer is probably now best described as a low probability but high consequence problem. Dig down (80-120 cm) to see if the surface hoar exists in your area.</span><span class="s_AA239
New snow has been slowly accumulating over a layer of facets and surface hoar, and in many places the&nbsp;  overlying slab may now be primed for human triggering.
The likelihood of triggering deeply buried surface hoar layers may have decreased; however, the layer remains touchy in many areas and could surprise with disastrous consequences.
A persistent weak layer of buried surface hoar on the west side of the region and a buried crust/facet combination on the east side of the region continues to be a concern for human triggering, or from triggering by smaller avalanches in motion.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3D0464D1">This persistent weak layer is probably now best described as a low probability but high consequence problem. Dig down (80-120 cm) to see if the surface hoar exists in your area.</span><span class="s_AA239
The likelihood of triggering buried surface hoar is slowly dropping but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential to step-down to a deeper weak layer.
Destructive persistent weaknesses buried up to 120cm below the surface have become less likely to trigger, but still deserve respect. I'd be increasingly cautious on steep, unsupported slopes around treeline.
The likelihood of triggering the buried weak layer is slowly dropping, but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.
The likelihood of triggering persistent weak layers is slowly dropping but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.
A persistent weak layer of buried surface hoar on the west side of the region and a buried crust/facet combination on the east side of the region continues to be a concern for human triggering, or from triggering by smaller avalanches in motion.
The likelihood of triggering deeply buried surface hoar layers may have decreased; however, the layer remains touchy in many areas and could surprise with disastrous consequences.
ont-weight: normal;font-size: 14px;color: #121212; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3D0464D1">This persistent weak layer is probably now best described as a low probability but high consequence problem. Dig down (80-120 cm) to see if the surface hoar exists in your area.</span><span class="s_AA239
The likelihood of triggering buried surface hoar and facets is slowly dropping in many areas, but touchy conditions persist in the Dogtooth Range near Golden. A few close calls serve as a warning this layer can surprise with nasty consequences.
="s_3FE45715">Persistent slabs have become more difficult to trigger; however, avalanches failing on buried surface hoar would be large and destructive. Use increased caution in steep, open terrain at treeline and below.
The likelihood of triggering persistent slabs is slowly dropping, but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The likelihood of triggering persistent slabs is slowly dropping in some areas. However, ongoing reports of remote triggering suggest deep and destructive avalanches are still a very real problem. </span><span class="s_AA239
New snow has been slowly accumulating over a layer of facets and surface hoar, and in many places the&nbsp; overlying slab may now be primed for human triggering.
The likelihood of triggering deeply buried surface hoar layers may have decreased; however, the layer remains touchy in many areas and could surprise with disastrous consequences.
Persistent slabs have become more difficult to trigger; however, avalanches failing on buried surface hoar would be large and destructive. Use increased caution in steep, open terrain at treeline and below.
New snow has been slowly accumulating over a layer of facets and surface hoar, and in many places the  overlying slab may now be primed for human triggering.
="s_69982360">The likelihood of triggering persistent slabs is slowly dropping, but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.
="s_3FE45715">A persistent weak layer of buried surface hoar on the west side of the region and a buried crust/facet combination on the east side of the region continues to be a concern for human triggering in thin spots where the layer is closer to the surface.
The likelihood of triggering persistent slabs is slowly dropping in some areas. However, ongoing reports of remote triggering suggest deep and destructive avalanches are still a very real problem.
Touchy conditions persist, especially in the Dogtooth Range near Golden. A few close calls serve as a warning this layer can surprise with nasty consequences.
This persistent weak layer is a classic low probability but high consequence problem. Dig down to see if the surface hoar exists in your area.
Low probability high consequence conditions persist, especially in the Dogtooth Range near Golden. A few close calls serve as a warning this layer can surprise with nasty consequences.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">The likelihood of triggering persistent slabs is slowly dropping, but if triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer.</span><span class="s_AA239
="s_7D940460">A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer. If triggered, this layer can still produce large, destructive avalanches.
New snow has been slowly accumulating over a layer of facets and surface hoar, and in many places the&nbsp; overlying slab may now be primed for human triggering.
The likelihood of triggering deeply buried surface hoar layers may have decreased; however, the layer remains touchy in many areas and could surprise with disastrous consequences.
="s_7D940460"> A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer. If triggered, this layer can still produce large, destructive avalanches.
A persistent weak layer of buried surface hoar on the west side of the region and a buried crust/facet combination on the east side of the region continues to be a concern for human triggering in thin spots where the layer is closer to the surface.
This persistent weak layer is a classic low probability but high consequence problem. Dig down to see if the surface hoar exists in your area.
A cornice failure or a small avalanche in motion has the potential to step-down to a deeper weak layer. If triggered, this layer can still produce large, destructive avalanches.
A cornice failure or a small avalanche in motion has the potential step-down to a deeper weak layer. If triggered, this layer can still produce large, destructive avalanches.
If triggered, this layer can still produce large, destructive avalanches. A cornice failure or a small avalanche in motion has the potential to step-down to a deeper weak layer.
Low probability high consequence avalanche conditions persist, especially in the Dogtooth Range near Golden. A few close calls (see Avalanche Activity) serve as a warning this layer has teath!
We are in a classic low probability but high consequence period.  Collapsing cornices or a small avalanche in motion could step down to a buried weak layer.
This persistent weak layer is a classic low probability but high consequence problem. Dig down to see if the surface hoar exists in your area.
Storm slabs in motion may step down to deeply buried persistent weak layers resulting in very large avalanches with wide propagations.
New snow has been slowly accumulating over a layer of facets and surface hoar, and in many places the&nbsp; overlying slab may now be primed for human triggering.
The persistent slab problem demands respect, especially in the north of the region. Riders have triggered a couple of very large avalanches this week. Forecast warming could increase the sensitivity of this problem.
While becoming unlikely to be triggered, this layer can still produce large, destructive avalanches. It seems to be most prevalent at and below treeline.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches. Forecast warming may increase the sensitivity of this problem over the next few days.
A small avalanche has the potential to step down to a deeper weak layer. Forecast warming may also make the persistent slab easier to trigger. If triggered, this layer can still produce large, destructive avalanches.
This layer has been more reactive near Rossland.
We are in a classic low probability but high consequence period.&nbsp; Collapsing cornices or a small avalanche in motion could step down to this buried weak layer.
We are in a classic low probability but high consequence period.&nbsp; Collapsing cornices or a small avalanche in motion could step down to a buried weak layer.
Heavy storm loading from snow or rain may trigger deeply buried persistent weak layers resulting in very large avalanches with wide propagations.
New snow has been slowly accumulating over a layer of facets and surface hoar, and in many places the overlying slab may now be primed for human triggering.
Avalanches on this layer are unlikely but would have disastrous consequences.
In deeper snowpack areas, surface hoar which was buried in early January is ripe for human triggering. Forecast warming will make avalanches failing at this interface more likely.
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</style><p class="p_CC664AAA"><span class="s_17AE1194">A deeply buried weak layer can still be triggered in some places, creating very large avalanches. Forecast warming may increase the sensitivity of this problem over the next few days.</span><span class="s_AA239
Loading from new snow and rain will increase the likelihood of waking up destructive persistent weak layers at all elevation bands.
The persistent slab problem demands respect, especially in the north of the region. Very large avalanches are possible with human triggers, or a wind slab or cornice fall. Forecast warming is expected to increase the sensitivity of this problem.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_17AE1194">A deeply buried weak layer can still be triggered in some places, creating very large avalanches. Forecast warming may increase the sensitivity of this problem over the next few days.</span><span class="s_AA239
A deeply buried weak layer can still be triggered, creating very large avalanches. Forecast warming may increase the sensitivity of this problem over the next few days.
We are in a classic low probability but high consequence period.&nbsp; Collapsing cornices or a small avalanche in motion could step down to this buried weak layer.
Collapsing cornices or a small avalanche in motion could step down to a buried weak layer.
="s_3FE45715"> A smaller avalanche in motion could step down to a variety of buried persistent weak layers in the snowpack.
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</style><p class="p_CC664AAA"><span class="s_3FE45715"> A smaller avalanche in motion could step down to a variety of buried persistent weak layers in the snowpack.</span><span class="s_AA239
A smaller avalanche in motion could step down to a variety of buried persistent weak layers in the snowpack.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_17AE1194">A deeply buried weak layer can still be triggered in some places, creating very large avalanches. Forecast warming may increase the sensitivity of this problem.</span><span class="s_AA239
="s_17AE1194">A deeply buried weak layer can still be triggered in some places, creating very large avalanches. Forecast warming may increase the sensitivity of this problem.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_17AE1194">A deeply buried weak layer can still be triggered in some places, creating very large avalanches. Forecast warming may increase the sensitivity of this problem.</span><span class="s_AA239
A deeply buried weak layer can still be triggered, creating very large avalanches. Forecast warming may increase the sensitivity of this problem.
Recent storm loading, solar radiation and skyrocketing freezing levels will increase the likelihood of waking-up deep and destructive persistent weak layers. Cornice falls triggered by solar radiation may also trigger a persistent slab avalanche.
="s_3FE45715">Recent storm loading, solar radiation and skyrocketing freezing levels will increase the likelihood of waking-up deep and destructive persistent weak layers. Cornice falls triggered by solar radiation may also trigger a persistent slab avalanche.
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</style><p class="p_CC664AAA"><span class="s_A8FEC758"> I would give it a couple more days to see how the warm temperatures have affected the reactivity of buried weak layers in the snowpack.</span><span class="s_AA239
A deeply buried weak layer can still be triggered in some places, creating very large avalanches. Forecast warming may increase the sensitivity of this problem.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches. Warm temperatures may increase the sensitivity of this problem.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches. Warm temperatures may increase the sensitivity of this problem.
A deeply buried weak layer can still be triggered, creating very large avalanches. Warm temperatures may increase the sensitivity of this problem.
ont-weight: normal;font-size: 13.3333333333333px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_3FE45715">I would give it a couple more days to see how the warm temperatures have affected the reactivity of buried weak layers in the snowpack.
="s_3FE45715">I would give it a couple more days to see how the warm temperatures have affected the reactivity of buried weak layers in the snowpack. A large trigger like a collapsing cornice could possible step down.
Recent storm loading, solar radiation and skyrocketing freezing levels have increased the likelihood of waking-up deep and destructive persistent weak layers. Cornice falls may also trigger a persistent slab avalanche.
="s_3FE45715">Recent storm loading, rain, solar radiation and skyrocketing freezing levels have increased the likelihood of waking-up deep and destructive persistent weak layers. Cornice falls may also trigger a persistent slab avalanche.
Recent storm loading, solar radiation and skyrocketing freezing levels have increased the likelihood of waking-up deep and destructive persistent weak layers. Cornice falls may also trigger a persistent slab avalanche.
Recent storm loading, rain, solar radiation and skyrocketing freezing levels have increased the likelihood of waking-up deep and destructive persistent weak layers. Cornice falls may also trigger a persistent slab avalanche.
I'm uncertain about how the prolonged warm temperatures have affected the reactivity of buried weak layers in the snowpack. I'd continue to treat open features around tree line cautiously until the snowpack cools off.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches.
A deeply buried weak layer remains sensitive to human triggering, which can result very large avalanches.
A buried weak layer of surface hoar remains a concern, especially around Golden where it has recently created some very large avalanches.
The deeply buried persistent weak layer of surface hoar was reactive during the last wet storm. It has not cooled off much, and more warm wet weather is forecast. Uncertainty with this layer requires conservative terrain selection.
There is a lot of uncertainty with the distribution and likelihood of triggering this layer. Conservative terrain selection is required when uncertainty is high.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches.
A deeply buried weak layer remains sensitive to human triggering, which can result very large avalanches.
There is a lot of uncertainty with the distribution and likelihood of triggering this layer. Conservative terrain selection is required when uncertainty is high.
A buried weak layer of surface hoar remains a concern, especially around Golden where it has recently created some very large avalanches.
Persistent slab avalanches are more likely in the north of the region where they continue to release naturally. The forecast storm load may increase the likelihood of triggering in all areas of the region.
Given the weak layers in the snow, there is still a possibility for a larger release deep in the snowpack. Potential triggers would be from shallow rocky start zones, or possibly from a small avalanche stepping down to lower layers.
A buried layer of surface hoar around 60 cm below the surface is cause for concern, especially on open unsupported, or convex slopes.
Buried weak layers are still reactive in the snowpack, especially in the far north of region, and have the potential to produce very large avalanches. Thin spot triggering, cornice releases, and smaller avalanches all have the potential to step down.
Buried weak layers are still reactive in the snowpack, especially in the far north of region, and have the potential to produce very large avalanches. Thin spot triggering, cornice releases, and smaller avalanches all have the potential to step down.
A weak mix of surface hoar and facets remain a concern, especially in the Dogtooth Range in the north of the region. A cautious approach is required in this area, as this layer may still surprise with nasty consequences.
A weak mix of surface hoar and facets remain a concern, especially in the Dogtooth Range in the north of the region. A cautious approach is required in this area, as this layer may still surprise with nasty consequences.
Buried weak layers are still reactive in the snowpack, especially in the far north of region, and have the potential to produce very large avalanches. Thin spot triggering, cornice releases, and smaller avalanches all have the potential to step down.
A buried crust and surface hoar layer lie up to 100cm below the surface. Although you may not see this weakness on every slope, avalanches at this interface may be surprisingly large. I would maintain respect for this layer for the foreseeable future
Persistent slab avalanches may be triggered down 60-90 cm below the storm snow that arrived this week. This problem is more likely where there is a weak layer of surface hoar at the crust interface. Wide fracture propagations are likely.
This is the problem that we previously called a storm slab. The February 10th surface hoar continues to allow for long fracture propagations resulting in very large avalanches. Strong solar may increase likelihood of triggering.
A buried crust and surface hoar layer lies up to 130cm below the surface in most parts of the region, although it may not be found on every slope, an avalanche at this interface may quite large. Consider this layer for the foreseeable future.
The February 10th surface hoar continues to allow for long fracture propagations resulting in very large avalanches. Strong solar may increase likelihood of triggering.
Persistent slab avalanches may be triggered down 60-90 cm below the recent storm snow. This problem is more likely where there is a weak layer of surface hoar at the crust interface. Wide fracture propagations are likely.
It may be possible to trigger weaknesses within the recent storm snow or at the crust interface at the bottom. be particularly cautious in wind-loaded and cross-loaded terrain near ridge crests.
A crust and surface hoar layer now lies buried up to 130cm below the surface in many parts of the region, it may not be found on every slope, but an avalanche at this interface could be quite large. Keep this layer on the radar for future reference.
&nbsp; A weak layer of surface hoar and/or crust down 70-90cm is susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or crust down 70-90cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or crust down 70-90cm is susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or a crust down 70-90cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or crust down 70-90cm is susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or crust down 70-90cm is susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or a crust down 60-100cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or a crust down 60-100cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or crust down 40-70cm is susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or a crust down 70-90cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or a crust down 50-90cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. It may be still be possible to directly trigger this layer during the heat of the day.
="s_3FE45715">A weak layer of surface hoar and/or a crust down 60-100cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. It may be still be possible to directly trigger this layer during the heat of the day.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A weak layer of surface hoar and/or a crust down 50-90cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. It may be still be possible to directly trigger this layer during the heat of the day.</span><span class="s_AA239
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">A weak layer of surface hoar and/or a crust down 40-70cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. It may be still be possible to directly trigger this layer during the heat of the day.</span><span class="s_AA239
The likelihood of triggering the weak crust/surface hoar layer down 50-90cm is decreasing with colder temperatures. In the Monashees, a patchy layer of surface hoar down 30-40cm may still be reactive to skier triggering.
tyle: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_3FE45715">The likelihood of triggering the weak crust/surface hoar layer down 50-90cm is decreasing with colder temperatures. In the Monashees, a patchy layer of surface hoar down 30-40cm may still be reactive to skier triggering.</span><span class="s_AA239
The likelihood of triggering the weak crust/surface hoar layer down 40-70cm is decreasing with colder temperatures but may still be triggered with heavy triggers like cornice falls or smaller avalanches stepping down.
Low likelihood, high consequence.
This is still a layer to keep in mind, as an avalanche on this layer could be large and destructive.
The likelihood of triggering the weak crust/surface hoar layer down 40-70cm is decreasing with colder temperatures but may still be triggered with heavy triggers like cornice falls or smaller avalanches stepping down.
The likelihood of triggering the weak crust/surface hoar layer down 50-90cm is decreasing with colder temperatures. In the Monashees, a patchy layer of surface hoar down 30-40cm may still be reactive to skier triggering.
The likelihood of triggering the weak crust/surface hoar layer down 50-90cm is decreasing with cooler temperatures. In the Monashees, a patchy layer of surface hoar down 30-40cm may still be reactive to skier triggering.
Smaller sluffs or wind slabs, cornice falls, or a ride/group of riders in the wrong spot may be enough load to trigger a crust and/or surface hoar layer that is buried an average of 60 cm deep. 
This is still a layer to keep in mind, as an avalanche on this layer could be large and destructive.
This is still a layer to keep in mind, as an avalanche on this layer could be large and destructive.
Smaller storm slab avalanches may step down and awaken this sleeping dragon.
Smaller storm slab avalanches may step down and awaken this sleeping dragon in areas where mid February surface hoar layer is still present.
An old weak layer down 80-100cm has been dormant recently but could wake up with substantial warming, sun, or new load. Heavy triggers such as cornice falls or smaller avalanches have the potential to step down to this layer.
An old weak layer down 80-100cm has been dormant recently but could wake up with substantial warming, sun, or new load. Heavy triggers such as cornice falls or smaller avalanches have the potential to step down to this layer.
An old weak layer down 80-100cm has been dormant recently but could wake up this weekend with substantial warming and storm loading. Heavy triggers such as cornice falls or smaller avalanches in motion have the potential to step down to this layer.
There are two buried surface hoar layers of concern. The February 27th layer is down 40-60 cm and the February 10th layer is generally 15-30 cm deeper in the snowpack. Buried surface hoar may be associated with a crust that allows for wide fractures.
Buried surface hoar and/or a crust may be down 40-60 cm and easy to trigger with light additional loads or from travelling on adjacent terrain.
An old weak layer down 80-100cm has been dormant recently but could wake up this weekend with substantial warming and storm loading. High freezing levels and rain may result in persistent weak layers &quot;waking up.&quot; </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Persistent weak layers of buried surface hoar may continue to be triggered by large loads like cornice falls or a large group of sledders re-grouping. Avoid un-supported terrain and shallow wind effected slopes adjacent to large alpine slopes.
The persistent weak layer of surface hoar may continue to be triggered by large loads like re-grouping or cornice falls.
Persistent weaknesses lie buried in the top 90cm of the snowpack. Although these layers are slowly becoming less likely to trigger, they have the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 90cm below the surface. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 90cm below the surface. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A persistent weak layer continues to produce intermittent large avalanches. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.</span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A persistent weak layer continues to produce intermittent large avalanches. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.</span><span class="s_AA239
A persistent weak layer continues to produce intermittent large avalanches. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 90cm below the surface. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weak layer continues to produce intermittent large avalanches. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 100cm below the surface. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 110cm below the surface. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 100cm below the surface. Although this layer is slowly becoming less likely to trigger, it continues to catch people by surprise. I'd continue riding with a conservative mind set.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.</span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.</span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_3FE45715"> The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.</span><span class="s_AA239
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
Smaller storm slab avalanches may step down and awaken this sleeping dragon in areas where mid February surface hoar layer is still present.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.</span><span class="s_AA239
Smaller storm slab avalanches may step down and awaken this sleeping dragon in areas where mid February surface hoar layer is still present.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and be increasingly cautious as freezing levels increase.</span><span class="s_AA239
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and be increasingly cautious as freezing levels increase.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Small loose wet avalanches and failing cornices triggering slab avalanches on the late February layer would be on the forefront of my mind as I travel through the mountains this weekend.</span><span class="s_AA239
Small loose wet avalanches and failing cornices triggering slab avalanches on the late February layer would be on the forefront of my mind as I travel through the mountains this weekend.
Small loose wet avalanches and failing cornices triggering slab avalanches on the late February layer would be on the forefront of my mind as I travel through the mountains this weekend.
Small loose wet avalanches and failing cornices triggering slab avalanches on the late February layer would be on the forefront of my mind as I travel through the mountains this weekend.
Prolonged warming has reawakened deeply buried weak layers, as well as causing glide slabs to release at the ground. The result is some surprisingly large avalanches.
Prolonged warming may cause deeply buried persistent weak layers to wake up, causing very large avalanches. Glide slabs are also possible.
Prolonged warming has reawakened deeply buried weak layers, as well as causing glide slabs to release at the ground. The result has been some surprisingly large avalanches.
="s_17AE1194">Prolonged warming has reawakened deeply buried weak layers, as well as causing glide slabs to release at the ground. The result has been some surprisingly large avalanches.
Rapid warming commonly awakens dormant weak layers deep in the snowpack.
Rapid warming commonly awakens dormant weak layers deep in the snowpack.
Rapid warming commonly awakens dormant weak layers deep in the snowpack.
Rapid warming commonly awakens dormant weak layers deep in the snowpack.
In Kootenay and Yoho there is a buried surface hoar and/or crust layer down about 50 cm. This layer may be triggered on steep terrain features where the wind may have stiffened up the overlying snow into a slab.
In Kootenay and Yoho there is a buried surface hoar and/or crust layer down about 50cm. Though little activity has been observed on this layer, it is still producing sudden planar results in tests and should be monitored.
In shallower areas east of the divide deep slabs have been observed failing on the lower facetted snowpack
In shallow snowpack areas, especially East of the divide, the storm snow and wind slabs overlie a weak faceted mid-pack.&nbsp; Avalanches triggered in this region may steep down to ground.
Touchy slabs are building and stiffening over a combination of facets, surface hoar, and sun crust on solar aspects. As the stiffness of the slabs increases, so too will the distance they propagate.
Touchy slabs continue to build and stiffen over a combination of facets, surface hoar, and sun crust on solar aspects. Large propagations (upto 300 m) and several skier remote triggered avalanches to size 2&nbsp; were observed today in KNP.
This layer is still touchy. Avalanche control was producing results on this layer today on the Sunshine Road and 93S.
This layer is still touchy. Expect it to be most reactive on south aspects near tree-line. Typically, it will be about 40cm thick.
The recent storm snow is settling and bonding to itself. There is still a poor bond at the storm snow interface (facets and surface hoar) down about 30-40 cm.
The storm snow is starting to settle into a cohesive slab. As the slab stiffens, the weak layer will get harder to trigger, but the consequences will be greater. The nature and distribution of the weak layer means it will be with us for a while.
The recent storm snow is settling but a poor bond still exists on the storm snow interface. Natural activity has decreased but it is still possible for skiers to trigger this layer.
A poor bond still exists between the storm snow and the Feb 10 interface. This interface is reactive to skier triggering. (see avalanche details)
There is still a poor bond between the storm snow and the Feb.10 layer of facets and surface hoar. This interface is still very susceptible to human triggering.
The storm snow interface down 40-70 cm still producing easy to moderate results. Natural cycle is over but still possible for skiers to trigger this layer.
The natural cycle is over but the Feb 10th interface down 30-70 cm is still producing easy to moderate results, with lots of whumphing and some skier triggered avalanches. Stick to moderate angled, well supported terrain until things improve.
The natural cycle is over but the Feb 10th interface down 25-60 cm is still producing easy to moderate results, with lots of whumphing and some recent skier triggered avalanches. Stick to moderate angled, well supported terrain until things improve.
Snowpack tests on this layer today produced easy results. Despite the easy results no avalanche activity was noted. This is a layer to approach cautiously over the next few days.
The Feb.10 interface of weaker crystals is slow to gain strength. Slab properties above this layer are becoming stiffer, and human triggering is very possible. These seem to be the most touchy on solar aspects where there is a buried suncrust.
The Feb 10th layer continues to produce sudden collapse test results in many areas. The cold temperatures will tighten things up a little and begin to weaken the slab over this layer but it is still a concern in many of the areas in the park.
The Feb. 10th layer is still a prominent feature in the snowpack producing variable results. We are seeing less activity over the past few days, but is still a concern in many regions of the forecast area.
This layer is slowly gaining strength however test results continue to show that wide propagations are possible in some areas which would lead to severe consequences. Sudden collapse results and low scores in propagation saw tests are still common.
This layer is slowly gaining strength however test results continue to show that wide propagations are possible in some areas which would lead to severe consequences. Sudden collapse results and low scores in propagation saw tests are still common.
This layer is gaining strength but tests and whumphing still show there is potential for wide propagation in some areas.&nbsp; Any avalanche on this layer could lead to severe consequences.
Test results on the Feb 10 layer generally in the moderate range but still show lots of potential for good propagation if triggered. Recent storm snow may be enough to activate this layer (see avalanche details). Lots of uncertainly with this layer
Test results on the Feb10 layer mainly in the moderate range with potential for wide propagations if triggered. The recent snow has been shown to overload this layer in the Kootenay,Sunshine, Yoho areas, and less so in the Louise region and Hwy. 93N.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> This layer is especially touchy around Sunshine and in Kootenay on steep features at treeline and below. There have been several </span><a href="https://www.facebook.com/photo.php?fbid=635006586549334&amp;set=a.589955951054398.1073741839.145133538869977&amp;type=1&amp;theater" target="_blank"><span class="s_9255B882">skier triggered avalanches</span></a><span class="s_AA239A9B"> to size 2 in past 36 hours and </span><a href="https://www.facebook.com/photo.php?fbid=635006599882666&amp;set=a.589955951054398.1073741839.145133538869977&amp;type=1&amp;theater" target="_blank"><span class="s_9255B882">explosive triggered avalanches</span></a><span class="s_AA239A9B"> to size 3 today.
Dense snow is overloading the Feb.10th interface and will continue through Sunday. 
The Feb 10th layer continues to be reactive in many areas especially at tree line. Avoid any steep terrain until this has a chance to bond.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> The recent snow has overloaded this layer. Although natural activity is tapering, this layer remains </span><span class="s_2823317B">VERY</span><span class="s_AA239A9B"> touchy as seen by two very </span><a href="https://www.facebook.com/photo.php?fbid=636202979763028&amp;set=a.589955951054398.1073741839.145133538869977&amp;type=1&amp;theater" target="_blank"><span class="s_9255B882">close calls </span></a><span class="s_AA239A9B">today.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> Natural avalanche cycle is over but conditions are still very touchy and ripe for skier triggering. Any avalanche triggered has the potential to be very</span><a href="https://www.facebook.com/media/set/?set=a.636554726394520.1073741856.145133538869977&amp;type=1#!/photo.php?fbid=636554863061173&amp;set=a.636554726394520.1073741856.145133538869977&amp;type=3&amp;theater" target="_blank"><span class="s_9255B882"> large.</span></a><span class="s_AA239
Natural activity has slowed down on this layer, but we have seen large avalanches over the past few days with the new storm snow overloading the Feb.10th interface. In some cases we have seen this step down to the basal facets in thin snowpack areas.
In thinner snowpack areas, this layer is still touchy as shown by numerous large whumphs and sudden collapse results today. It is especially reactive on solar aspects where there is a buried sun crust and may be less reactive in deeper snowpacks
This layer is still touchy in thin snowpack areas (especially where there is a buried sun crust), and large whumps and sudden collapse results have been found. With limited observations this layer now seems less reactive in deeper snowpack areas.
With the new snow, expect the Feb 10th layer of facets, surface hoar, and some buried sun crust to &quot;wake up&quot;, especially in thin and variable snowpack areas.&nbsp;
As yesterdays avalanche indicates, the basal weaknesses are still susceptible to human triggering. Use caution in steep, shallow areas that have not previously avalanched.
The Feb 10th layer continues to produce whumphs, natural and remote avalanches and skier triggered avalanches. It is especially sensitive in thinner or cross loaded snowpack areas and places with a buried sun crust.
We are seeing less activity with this problem as the days go by. It is still touchy and what is left is a low likelihood but high consequence situation if it is triggered.
Activity on the Feb.10th of facets, surface hoar and buried suncrust is starting to taper off, and it is a lowered likelihood with large consequences scenario.  Some slides have been observed to step down to ground in thin snowpack areas.
Feb 10 shears tightening up in deep snow pack areas west of the divide. In shallower snowpack areas this interface still producing whoomphing and easy to moderate shears.
Slowly this layer is becoming less reactive, but it remains a concern. Field tests, particularly on southern aspects, confirms this. It's now down 80-120 cm and more likely triggered from thinner areas or by larger loads.
We are finding moderate to hard sudden collapse results on the Feb.10 interface. Thin and variable snowpack areas will be the easiest places to trigger this interface.
The Feb 10 layer will be touchier in the Eastern portion of the forecast area, less in the West. In addition to Feb 10, the Mar 13 layer, a suncrust on South aspects, can be found down 40-60cm. Snowpack tests on this layer produced moderate results.
The Feb 10 layer is touchier in the eastern portion of the forecast area, less in the west. In addition to Feb 10, the Mar 13 layer (suncrust on south aspects) can be found down 30-60cm. Snowpack tests on this layer have produced moderate results
The Feb 10 layer is touchier in the eastern portion of the forecast area, less in the west. In addition to Feb 10, the Mar 13 layer (suncrust on south aspects) can be found down 30-60cm. No shears were found on Mt Field today during snowpack tests.
There are two layers of concern in the upper meter of the snowpack that continue to produce shears in isolated areas and have a high degree of uncertainty. Be very mindful of this problem in areas that have not previously avalanched.
In areas of the park with a weaker snowpack we remain concerned about the Feb 10 layer of facets and surface hoar located in the middle of the snowpack. This layer remains, and caution is advised in specific areas such as the burns in Kootenay Park.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> In areas with uneven, shallower or weaker snowpacks, we remain concerned with the Feb 10th midpack layer of crust/facets/surface hoar (Kootenay burns) and the </span><a href="https://www.facebook.com/media/set/?set=vb.145133538869977&amp;type=2#!/photo.php?v=643191412397518&amp;set=vb.145133538869977&amp;type=2&amp;theater" target="_blank"><span class="s_9255B882">basal facet layer.</span></a><span class="s_AA239A9B"> Stick to lower angled well supported terrain in these areas.
In areas with uneven, shallower or weaker snowpacks, we remain concerned with the Feb 10th midpack layer of crust/facets/surface hoar, and the basal layer. Choose conservative, well supported terrain in these areas.
Although this problem still remains, triggering still remains possible. As time goes by it will become less likely that people will be able to trigger this layer.
Several avalanches have been observed deep in the snowpack over the past 24-hours. Avoid shallow areas where the snowpack is weakest. These avalanches are very unpredictable, so choose terrain that avoids steep, rocky slopes.
This problem represents a classic low likelihood high consequence situation. Areas that have not previously avalanched will be more susceptible to triggering.
We are getting lots of large whumphs on the Dec 18th layer consisting of facets/crust. This indicates the potential for skier triggering in steep terrain. Areas where the snow over this layer has stiffened into more of a slab are of the most concern.
Perpetual whumphing of the Dec 18th layer consisting of facets/crust exists. Skier triggered surface slabs have the potential to step down to the Dec18th layer.
This is a serious weak layer down 40 cm that seems to be either crust, facets or surface hoar depending on location.&nbsp; Snowpack tests continue to be in the moderate and sudden range for this layer, indication strong potential for human triggering.
This is a serious weak layer down 40 cm that seems to be either crust, facets or surface hoar depending on location. Snowpack tests continue to be in the moderate and sudden range for this layer, indication strong potential for human triggering.
This layer is more touchy in deeper snowpack areas where it is more deeply buried (30 - 50 cm down) and at lower elevations where it is a rain crust/ surface hoar combination.
A 30-40cm soft slab sits over the Dec 3 surface hoar in many sheltered locations below 2000m. Continue to treat all steep open slopes below treeline with suspicion until you can rule out this weak layer.
A 30-40cm soft slab sits over the Dec 3 surface hoar in an elevation band between 1700 and 2150m. Continue to treat all steep open slopes below treeline with suspicion until you can rule out this weak layer.
A 30-40cm soft slab sits over the Dec 3 surface hoar in an elevation band between 1700 and 2150m. Continue to treat all steep open slopes below treeline with suspicion until you can rule out this weak layer.
A 30-40cm soft slab sits over the Dec 3 surface hoar in an elevation band between 1700 and 2150m. Continue to treat all steep open slopes below treeline with suspicion until you can rule out this weak layer.
A 30-40cm soft slab sits over the Dec 3rd surface hoar in an elevation band between 1700 and 2150m. This slab has facetted out in many areas, but watch out in areas where previous wind may have formed a denser slab above this layer.
A 30-40cm soft slab sits over the Dec 3rd surface hoar between 1700 and 2150m. This slab has facetted out in many areas, but be cautious on steep (40+degree) slopes where previous winds may have formed isolated denser slabs above.
A 30-50cm slab sits over the Dec 3 surface hoar that can be found in isolated areas between 1700 and 2150m. While this slab has facetted out in many areas, be cautious in aggressive terrain or in wind affected areas where the slab may retain strength
The slab above this layer has facetted out in many areas which has lead to a decrease in triggering however tests continue to produce significant shears. Be cautious in aggressive terrain or in wind affected areas where the slab may retain strength.
The slab above this layer has not been very reactive recently however snow pack tests continue to produce sudden shears in some areas. Dig down to identify and test this layer before committing to in steep, open or convex terrain below tree line.
The slab above this layer has not been very reactive recently. Snow pack tests produce shears in the moderate to hard range. Dig down to identify and test this layer before committing to in steep, open or convex terrain below tree line.
The slab above this layer has not been very reactive recently. Snow pack tests produce shears in the moderate to hard range. Dig down to identify and test this layer before committing to in steep, open or convex terrain below tree line.
The slab above the Dec 3 surface hoar layer has not been very reactive recently. Snow pack tests produce shears in the moderate to hard range. This is mostly a concern in areas near the divide with a deeper snowpack and more snow over the weakness.
The slab above the Dec 3 surface hoar layer has not been very reactive recently. Snow pack tests produce shears in the moderate to hard range. This is mostly a concern in areas near the divide with a deeper snowpack and more snow over the weakness.
The new snow is settling into a 15- 40 cm slab above the Jan. 6th surface hoar and facet layer. This layer is most reactive where there is a thicker slab and buried surface hoar (between 1500 and 2000m in Kootenay).
The new snow is settling into a 20-50 cm slab above the Jan. 6th surface hoar and facet layer. This layer is most reactive where there is a thicker slab and buried surface hoar (between 1500 and 2000m in Kootenay).
Close to 50 cm of settled snow now overlies the Jan 4 layer of surface hoar and facets. This layer is visible in snow profiles, and tests show moderate, sudden planar shears. Watch for this problem in open glades and slopes near and below treeline.
Close to 50 cm of settled snow now overlies the Jan 4 layer of surface hoar and facets. While crusts may hold things together below about 1900m be cautious above this where human triggering is likely and natural activity is quite possible. 
30-50 cm of settled snow overlies the Jan 6 layer of surface hoar and facets. This continues to be reactive to both human and explosive triggering with potential for failures to step down into deeper snowpack layers and result in large avalanches.
30-60 cm of settled snow overlies the Jan 6 layer of surface hoar and facets. This continues to be reactive to both human triggering with potential for failures to step down into deeper snowpack layers and result in large avalanches.
30-60 cm of snow overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it is still in the range of human triggering with potential for failures to step down into deeper layers and result in large avalanches.
30-60 cm of snow overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it is still in the range of human triggering with potential for failures to step down into deeper layers and result in large avalanches.
30-60 cm of snow overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it has become stubborn to trigger, but the potential for wide propagation remains.
An average of 30-60 cm overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it has become stubborn to trigger, but the potential for wide propagation remains.
An average of 30-60 cm overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it has become stubborn to trigger, but potential for wide propagation remains. The new snow will increase the likelihood of this.
An average of 30-60 cm overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it has become stubborn to trigger, but potential for wide propagation remains. The new snow will increase the likelihood of this.
An average of 40-80 cm overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it has become stubborn to trigger, but potential for wide propagation remains. The new snow will increase the likelihood of this.
Expect this problem to produce avalanches on Tuesday, and avoid exposure to avalanche terrain as these will be large avalanches with potentially significant consequences.
These large avalanches have potentially significant consequences. Warm temperature coinciding with steep and shallow ares are a combination to avoid tomorrow.
Large avalanches are occurring daily right now. Best to avoid most avalanche start zones unless there is evidence of previous avalanches having occurred. Conditions are dangerous so be careful in your route selection.
Widespread natural and explosive triggered avalanche activity on this layer in the past few days. In thinner areas, avalanches are scrubbing down to ground. With the cooling temps, this should become less reactive, but is still worthy of respect.
Widespread natural &amp; explosive triggered avalanches on this layer in the past week. In thinner areas, avalanches are scrubbing down to ground. With the cooling temps, this should become less reactive, but is still a concern for skier triggering.
Numerous reports of avalanches triggered on the Jan 6 layer over the last 5 days (less reactive below treeline).  In thinner areas, isolated avalanches have been seen to scrub to ground.&nbsp; Less natural activity noted today due to cooler temperatures.
Numerous reports of avalanches triggered on the Jan 6 layer over the last 5 days (less reactive below treeline). In thinner areas, isolated avalanches have been seen to scrub to ground. Less natural activity noted today due to cooler temperatures.
50-100 cms of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last 5 days. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cms of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last 5 days show that it is active. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cms of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last 5 days show that it is active. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last week show that it is active. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last week show that it is active. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last 24 hours show that it is active. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous avalanches triggered on this Saturday. In thinner areas, many of these avalanches have scrubbed through the facets to the ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous avalanches have been triggered on this layer recently. In thin snow pack areas, many of these avalanches have stepped down to the ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous avalanches have been triggered on this layer in the last week. In thin snow pack areas, some of these avalanches have stepped down to the ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous avalanches have been triggered on this layer in the last week. In thin snow pack areas, some of these avalanches have stepped down to the ground.
The snow that fell on the Halloween crust became faceted by the early November cold snap. Soft slabs of snow now sit above this weak snow and are becoming increasingly reactive to skier traffic and small triggers such as sluffs out of steep terrain.
30 - 60 cms of snow from the last storm has settled into a slab that overlies the Halloween crust/ facet interface. A natural avalanche cycle occurred on this layer on Sunday and Monday with avalanches to size 3, mostly starting in the low alpine.
This is an active avalanche problem and is the main reason people should avoid all avalanche terrain for Wednesday and Thursday. The problem exists in most terrain and will become overloaded with the incoming storm. Watch overhead hazard.
This is an active avalanche problem and is the main reason people should avoid all avalanche terrain Thursday. The problem exists in most terrain and will become overloaded with the incoming storm. Watch overhead hazard.
This is an active avalanche problem that has become over loaded. It is the main reason people should avoid all avalanche terrain. Watch overhead hazard, avalanches will run further than expected incorporating slushy wet snow.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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  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 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 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 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 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 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 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.
4cm thick rain crust found below tree line and up to 2700ms. No new avalanches have been observed on this layer.
Recent slab formation overlies a persistent weak layer of surface hoar, facets and crusts found predominantly at treeline and below. This layer is going to become more reactive with the next pulse of snow which begins on Saturday night.
Touchy slabs have been found primarily on East facing terrain below ridge crests between 2000 and 2400m.  These slabs are sitting on a persistent weak layer of crust and facets and are stiffening up, increasing the likelihood of wide propagations.
The persistent slab interface is a combination of crusts, facets, and surface hoar overlying a solid midpack bridging weak basal facets. It will be large if triggered. Caution on steep lee treeline and subalpine aspects with variable snow depths.
This persistent weak layer consists of facets and surface hoar that were covered. It sits on a mixture of crusts and firm supportive snow. This seems to be of most concern at the Treeline and lower alpine elevations between 2000m and 2400m.
This persistent weak layer consists of facets and decomposing surface hoar under 30cm of surface snow. It sits on a mixture of crusts and firm snow. It is of most concern at treeline and subalpine zones between 2000-2400m.
The persistent slab overlies 2 main weaknesses that will not go away anytime soon. A decomposing surface hoar-surface facet layer 30cm down and thick layer of basal facets-depth hoar. Its spatial variability makes it difficult to predict.
The persistent slab is intermixed with 2 main weaknesses that will not go away anytime soon, the decomposing surface hoar-facet layer and thick layer of basal facets-depth hoar. Its spatial variability makes it difficult to predict.
The persistent slab is intermixed with 2 main weaknesses that will not go away anytime soon, the decomposing surface hoar-facet layer and thick layer of basal facets-depth hoar. Its spatial variability makes it difficult to predict.
The strong mid-pack is bridging the layer well through the forecast area. Its spatial variability over the terrain does make it difficult to predict and snowpack tests show it to be very weak. Be careful in shallow start zones.
We have seen very few avalanches from this layer in the past 2 weeks. A strong midpack , when present, prevents triggering from all but the largest loads. Where the snowpack is shallow triggering will be considerably easier.
The strong mid-pack is bridging the layer well through the forecast area. Its spatial variability over the terrain does make it difficult to predict and snowpack tests show it to be very weak. Be careful in shallow start zones.
The strong mid-pack is bridging the layer well through the forecast area. Its spatial variability over the terrain does make it difficult to predict and snowpack tests show it to be very weak. Be careful in shallow start zones.
The strong mid-pack is bridging the layer well through the forecast area. Its spatial variability over the terrain does make it difficult to predict and snowpack tests show it to be very weak. Be careful in shallow start zones.
The &quot;drought layer&quot; (Feb 10) has been sensitive in the past week, contributing to numerous large avalanches. Pay particular attention to moraines at treeline and cross-loaded features in the alpine.
The &quot;drought layer&quot; (Feb 10) has been sensitive in the past week, contributing to numerous large avalanches. Pay particular attention to moraines at treeline and cross-loaded features in the alpine.
Some small pockets of surface hoar may still be present at and below treeline.
The 1 meter of storm snow has transitioned into a persistent slab. This slab is sitting on a raincrust/surface hoar weakness.
These slabs are sitting on a surface hoar layer in sheltered areas. Triggering of these slabs is possible even in low angle terrain .
Deep soft slabs are sitting on this reactive layer. Triggering of these slabs is possible even in low angle terrain .
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 .
Although the Dec3 layer down 60cm has not been associated with any recent avalanche activity, it is still a concern, particularly in sheltered open terrain below treeline. If you find this layer in your travels, please let us know.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Forecasters will continue to monitor the break-down of this interface cautiously.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Forecasters will continue to monitor the break-down of this interface cautiously.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 interface down 50cm appears to be bonding well, but be sure to evaluate steep and committing features, particularly around treeline.
The Dec3 interface down 50cm appears to be bonding well, but be sure to evaluate steep and committing features, particularly around treeline.
The Dec3 interface down 60cm appears to be bonding well, but be sure to evaluate steep and committing features, particularly around treeline.
30 cm of storm snow from Thursday continues to build into a slab overlying a weak facetted snowpack or decomposed surface hoar layer.
Previously formed slabs now comprise the upper and mid-pack in many locations. They can rest on weak facets.
Previously formed slabs now comprise the upper and mid-pack in many locations. Natural and human triggered avalanches are possible.
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.
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.
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">
Persistent mid-pack slab condition continuing to surprise, and not the good kind of surprise! Like triggering an unseen overhead feature; Surprise!
Expect incoming snow to overload the Halloween crust.  This may produce our first cycle of large avalanches this season.
An avalanche cycle is ongoing. Remote triggering at treeline has occurred in the Hilda Creek area which speaks to the sensitivity. Debris is running into the valley bottom where snow depths are much thinner and this problem layer may not exist.
This is a complex problem which is hard to assess and predict. Give yourself a wide margin and make conservative terrain choices. Below treeline this layer is only a concern if you are in a run out zone of a large avalanche path.
This is a complex problem which is hard to assess and predict. Give yourself a wide margin and make conservative terrain choices. Below treeline this layer is only a concern if you are in a run out zone of a large avalanche path.
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.
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.
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.
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.
Persistent slabs remain a problem. The main concern is for areas exposed to large triggers such as cornices or smaller avalanches / sloughing from above.
Whumpfing and cracking are signs of this layer's reactivity. Expect long propagation with a wind-stiffened snow surface.
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.
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.
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.
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.
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.
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.
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).
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.
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.
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.
A cold, facetting, and structurally weak snowpack overlies faceted crystals (well developed in shallow areas).
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.
A persistent weak layer down 50 to 70cm is reactive to skier triggering.  Our observations suggest the most reactive locations are steep S/SW facing slopes and open glades. Strong south winds may have created harder wind slabs at and above treeline.
A persistent weak layer down 50 to 70cm is reactive to skier triggering. Our observations suggest the most reactive locations are steep S/SW facing slopes and open glades. Strong south winds may have created harder wind slabs at and above treeline.
A cohesive slab overlies a persistent weak layer. Variable distribution and composition makes this layer difficult to predict. Tests on this layer indicate it is skier triggerable and observations indicate it is most reactive on steep S'ly aspects.
A cohesive slab overlies a persistent weak layer. Variable distribution and composition makes this layer difficult to predict. Tests on this layer indicate it is skier triggerable and observations indicate it is most reactive on steep S'ly aspects.
2 layers, down ~40 and ~80cm, exist in isolated areas (see forecast details). They have been reactive to ski cutting on steep unsupported features in Rogers Pass, and in the surrounding region caused several human triggered size 2 avalanches.
A touchy surface hoar layer is down 25-40cm. There have been human triggered avalanches on this layer daily. Avalanches are increasingly possible with new snow and rising winds today adding load, and mild temperatures making the slab more cohesive.
A touchy surface hoar layer is down 35-55cm. Human (even tree bomb) triggered avalanches have occurred daily. Avalanches are increasingly possible with new snow and rising winds today adding load, and mild temperatures making the slab more cohesive.
A touchy surface hoar layer is down ~50cm. Human (even tree bomb) triggered avalanches have occurred daily. Avalanches are increasingly possible with new snow load and mild temperatures making the slab more cohesive.
The Feb 12 PWL is becoming more reactive as it matures.&nbsp; Skier triggered and natural avalanches have been increasing on this layer, with RB scores of 2, whole block.&nbsp; It is most reactive on solar aspects between 17-1900m.
A &quot;persistent weak layer&quot; (Feb 12 SH) is now down 50-60 cm from the surface, and is sporadically reactive to skier triggering.  Wide propagations are possible, especially on sunny aspects where it sits on a sun crust, between 17-1900m.
A &quot;persistent weak layer&quot; (Feb 12 SH) is down 50-60 cm from the surface, and remains sporadically reactive to skier triggering.  Wide propagations are possible, especially on sunny aspects where it sits on a sun crust, between 17-1900m.
A weak layer is down 40-50cm. It is most likely to be skier-triggered around 17-1900m, avoid open slopes and convex rolls. On sunny aspects the weak layer can be touchy.  Natural avalanche activity will increase on this layer today with the new snow.   
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> A weak layer is down 50-70cm. It is most likely to be skier-triggered around 17-1900m, avoid open slopes and convex rolls. On sunny aspects the weak layer can be touchy. See </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://avalancheinfo.net/Parks/Glacier/Images/2013-02-23%20Sz%202%20Sc.jpg" target="_blank"><span class="s_9255B882">image</span></a><span class="s_AA239A9B"> of skier-triggered avalanche yesterday on this layer at 1700m.
A buried surface hoar layer, down 40-50cm, reactive to skier triggering particularly where it sits on a crust on steep south aspects. The overlying slab is stiffening and will produce larger propagation avalanches when triggered.
More load over the surface hoar layer buried 40-55cm. This layer is reactive to rider triggering and remote triggering. The overlying slab will continue to produce avalanches with larger propagation and more consequence for the foreseeable future.
Surface hoar layer buried 40-55cm. This layer is reactive to rider triggering and remote triggering. The overlying slab will continue to produce avalanches with larger propagation and more consequence for the foreseeable future.
Surface hoar layer buried 40-55cm. This layer is reactive to rider triggering and remote triggering and has been seen to be most reactive where the surface hoar is sitting on a sun crust or firm layer in the snowpack (bed-surface).
Surface hoar layer buried 45-60cm. This layer is reactive to rider triggering and remote triggering and has been seen to be most reactive where the surface hoar is sitting on a sun crust or firm layer in the snowpack (bed-surface).
A weak surface hoar layer is now down ~85cm. This layer has been triggered by humans; remotely from 40m away, and capable of wide propagations up to 150m. Rapid loading or other avalanches may trigger this layer and produce very large avalanches.
A weak surface hoar layer is now down ~1m. This layer has been triggered by humans; remotely from 40m away, with propagations up to 150m wide. Rapid loading and other avalanches triggered this layer yesterday producing very large avalanches.
A weak surface hoar layer is now down ~1m. This layer has caused widespread avalanches: natural's up to size 4, and size 2.5 human triggered avalanches. In areas where it hasn't already avalanched it is very reactive, and has been remotely triggered.
A weak surface hoar layer is now down ~1m. This layer has caused widespread avalanches: natural's up to size 4, and size 2.5 human triggered avalanches. In areas where it hasn't already avalanched it is very reactive, and has been remotely triggered.
A weak surface hoar layer is now down ~1m. This layer has caused widespread avalanches: natural's up to size 4, and size 2.5 human triggered avalanches. In areas where it has not already avalanched it remains touchy, and has been remotely triggered.
The Feb 12 PWL continues to be a concern. During the last storm cycle several avalanches &quot;stepped&quot; down to this layer.  It will remain a problem for some time.
The Feb 12 PWL continues to be a concern. During the last storm cycle several avalanches &quot;stepped&quot; down to this layer. It will remain a problem for some time.
The Feb 12 PWL continues to be a concern. During the last storm cycle several avalanches &quot;stepped&quot; down to this layer. It will remain a problem for some time.
The surface hoar/crust layer from February is becoming less reactive; a function of it now being 1-1.5m deep and having avalanched in many areas. It is most likely to be triggered on solar aspects or by heavy triggers, resulting in large avalanches.
The surface hoar/crust layer from February is becoming less reactive; a function of it now being 1-1.5m deep and having avalanched in many areas. It is most likely to be triggered on solar aspects or by heavy triggers, resulting in large avalanches.
The surface hoar/crust layer from February is most likely to be triggered on solar aspects from shallow areas or from large triggers such as cornice falls resulting in large avalanches.
The surface hoar/crust layer from February is most likely to be triggered on solar aspects from shallow areas or from large triggers such as cornice falls resulting in large avalanches.
The surface hoar/crust layer from February is most likely to be triggered by large triggers such as avalanches triggered in shallower layers in the snowpack and cornice falls which will result in large avalanches.
The surface hoar/crust layer from February is most likely to be triggered by large triggers such as avalanches triggered in shallower layers in the snowpack and cornice falls which will result in large avalanches.
The surface hoar/crust layer from February is most likely to be triggered by large triggers such as avalanches triggered in shallower layers in the snowpack and cornice falls which will result in large avalanches.
It will likely take a large trigger, like a cornice fall or another avalanche to trigger the surface hoar/crust layer from February down 1-1.5m. If triggered, however, the resulting avalanche would be very large and destructive.
It will likely take a large trigger, like a cornice fall or another avalanche to trigger the surface hoar/crust layer from February down 1-1.5m. If triggered, however, the resulting avalanche would be very large and destructive.
It will likely take a large trigger, like a cornice or another avalanche to trigger the surface hoar/crust layer from February 12, now down 1-1.5m. The resulting avalanche would be very large and destructive if triggered.
It will likely take a large trigger, like a cornice or another avalanche to trigger the surface hoar/crust layer from February 12, now down 1-1.5m. The resulting avalanche would be very large and destructive if triggered.
It will likely take a large trigger, like a cornice or another avalanche to trigger the  Feb 12 and March 11 PWL's, now down 1-1.5m. The resulting avalanche would be very large and destructive if triggered.
Two weak layers are buried down 1-1.5m.  Though unlikely, a large trigger like a cornice or another avalanche may cause these weak layers to fail. 
Two weak layers are buried down 1-1.5m. Though unlikely, a large trigger like a cornice or another avalanche may cause these weak layers to fail.
Slopes receiving direct sun become more reactive during the day with warming. This is especially likely on steep solar aspects where buried crusts exist. Solar triggered avalanches are most likely around exposed rocks and may trigger deeper slabs.
Slopes receiving direct sun become more reactive during the day with warming. This is especially likely on steep solar aspects where buried crusts exist. Solar triggered avalanches are most likely around exposed rocks and may trigger deeper slabs.
PWL's are becoming stubborn, but should not be discounted.  Slopes receiving direct sun become more reactive during the day with warming. This is most likely on steep solar aspects where buried crusts exist, but northerly aspects are not immune.
PWL's are becoming stubborn, but should not be discounted.  Slopes receiving direct sun become more reactive during the day with warming. This is most likely on steep solar aspects where buried crusts exist, but northerly aspects are not immune.
Buried weak layers are stubborn to fail, but should not be discounted. Slopes receiving direct sun become more reactive during the day with warming. This is most likely on steep solar aspects where buried crusts exist.
Buried weak layers are stubborn to fail, but should not be discounted. Slopes receiving direct sun become more reactive during the day with warming. This is most likely on steep solar aspects where buried crusts exist.
The recent snow has tightened up into a slab. It sits on various weak crystals, like facets or surface hoar, that may be triggered by skiers. If triggered, avalanches may step down to deeper surface hoar layers resulting in very large avalanches.
The recent snow has tightened into a slab. It sits on various weak crystals, like surface hoar and facets, that can be triggered by people. These avalanches may step down to deeper surface hoar layers, resulting in large avalanches.
A weak layer is buried down around 80 cm.&nbsp; If triggered, a large, high consequence avalanche will result. Carefully evaluate big terrain features by digging and testing adjacent, safe slopes.
A weak layer is buried down 60 to 90 cm. If triggered, a large high consequence avalanche will result. Carefully evaluate big terrain features by digging and testing adjacent, safe slopes.
2 weak layers exist in the snowpack, these are down between 70 and 110cm. They could become reactive with this additional snow load having very large consequences if triggered.
2 weak layers exist in the snowpack, these are getting deeper as snow amounts increase. They are down between 70 and 120cm and will have devastating consequences if triggered.
The interface between the December snow and the facetted November snow, down ~80cm is the biggest concern. Although this interface is becoming less likely to trigger it is possible, or smaller avalanches may step down to this layer.
Persistent weak layers down ~80cm (facets), and down ~115cm (surface hoar) continue to be reactive in specific locations. Although these interfaces are becoming less likely to trigger it is possible, or smaller avalanches may step down to this layer.
Persistent weak layers down ~80cm (facets), and down ~115cm (surface hoar) continue to be reactive in specific locations. Although these interfaces are becoming less likely to trigger it is possible, or smaller avalanches may step down to this layer.
Weak layers are buried down 80 to 100 cm. In a shallow snowpack where the weak layer is well-preserved, a skier could fail these layers.
The 2 buried weak layers down 70 to 110cm are still producing results in our snowpack tests. Caution around shallow snow pack areas where triggering these layers is most likely.
2 buried weak layers down 70 to 110cm remain a concern for riders. Consequences would be large if triggered which is more likely from shallow snowpack areas.
The presence of buried surface hoar remains a concern for backcountry riders. The potential for a large avalanche on this layer still exists.
The presence of a deep surface-hoar weakness remains a concern for backcountry travelers. It will likely take a large load to trigger it, like a cornice or someone who ate too many perogies over Christmas.
A deep persistent weakness lingers, down roughly 120cm. It will take a large trigger to initiate this layer, but if it starts to move, propagation would likely be wide and deep, creating a larger avalanche.
The heavy trigger may have arrived with this latest dump. Large avalanches are occurring, and may be stepping-down to this deeper layer.
This problem is becoming increasingly challenging. The clues of instability, like cracking and whumphing are tapering off, but tests and continued avalanches indicate that this thick slab is triggerable and will produce very large avalanches.
A strong slab overlies a very weak layer buried down 1-1.5m. The snowpack now demands your respect, if you trigger this layer a large, high consequence avalanche will result.&nbsp; Use caution in shallow snowpacks, where triggering is more likely.
A strong slab overlies a very weak layer buried down 1-1.5m. The snowpack now demands your respect, if you trigger this layer a large, high consequence avalanche will result.&nbsp; Use caution in shallow snowpacks, where triggering is more likely.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_E6FD2046">The slab overtop the weak layers down 1-1.5m continues to settle and become more cohesive. This problem will take a while to heal and requires good terrain management. Be particularly weary of open unsupported slopes and convex rolls below tree line.
The 1-1.5m slab over the weak layers continues to settle and become more cohesive. This problem will take a while to heal and requires good terrain management. Be wary of open, unsupported slopes and convex rolls, particularly at tree-line and below.
The 1-1.5m slab overlying the Feb 10th weak layer is slowly bonding to this interface, but is still reactive in tests. This problem requires good terrain management, such as avoiding large convexities and sticking to supported features.
A weak, persistent layer is buried under a thick slab. This layer is becoming more difficult to trigger, but if triggered will propagate widely producing a very large avalanche. Choosing appropriate terrain is key in managing this problem.
As this weak layer, buried down around 1 m, gains strength human triggered avalanches are still possible. Areas of concern are open, unsupported slopes, convex terrain and thin snowpack areas.
As this weak layer, buried down around 1 m, gains strength human triggered avalanches are still possible. Areas of concern are open, unsupported slopes, convex terrain and thin snowpack areas.
The sun crust/surface hoar layer down 1-1.5m is still producing hard sudden results in snowpack tests. This indicates that the layer is difficult to trigger but will propagate widely if it does.
The suncrust/surface hoar layer down 1-1.4m is still producing hard, sudden results in snowpack tests. This indicates it is stubborn to trigger, but if initiated, it will propagate widely, producing large avalanches.
Lingering deep (1-1.4m) in the snowpack, the surface hoar/facet/crust sandwich continues to produce hard, sudden results in tests. If a large enough trigger gets this layer to fail, avalanches will be very large.
The facet/crust &quot;sandwich&quot; is buried 120-150cm below the surface now. It is still producing hard, sudden results in tests, indicating that it can will propagate if a large enough trigger hits it. Avalanches digging into this layer will be large!
This last storm, and the forecast dump of snow this weekend, may wake a weak persistent layer up. This layer, buried ~1.5m deep, is still reactive in snowpack tests and if triggered will produce very large and destructive avalanches.
A deep weak layer buried at the end of January is down around 1.5 m. Although we have not observed any recent skier-triggering of this layer, artillery control triggered this layer on the west side of the park, releasing a size 3.5.
A deep weak layer buried at the end of January is down 1.8 to 2 m.&nbsp; Smaller avalanches could step down and trigger as large, high consequence avalanche on this layer.
A sun crust down ~1m is well within the range of human triggering on south and west aspects. The February surface hoar/crust layer down ~1.5-2m which can reawaken with a heavy trigger such as a large cornice release.
A weak layer down 20-30 cm is still reactive to skier-triggering. Use caution on unsupported features and convex terrain. Watch for changing conditions as temperatures warm up today and surface crusts deteriorate.
We may see the deeper instabilities reawaken with the warm temperatures, and possibly rain, moving into the snowpack. Try to avoid shallow, thin areas where a person could trigger a deeper weakness.
Be aware that step down avalanches are possible if storm slabs or wind slabs are triggered in wind loaded areas.
The large size 3.5 from Moccasin Flats 36 hours ago shows the persistent slabs have not gone away. Larger triggers, like cornices or surface avalanches, may step down to deeper layers.
Without a good refreeze, there is less structure to the snowpack to prevent it from stepping down into the lower persistent weaknesses. The large size 3.5 from Moccasin Flats 2 days ago illustrates the potential destructive force lingering out there.
Trigger points for the persistent weak layers buried down ~1m and ~1.3m include steep alpine terrain, thin areas, and unsupported open slopes.&nbsp; Once initiated avalanches triggered in the storm snow may step down to the deep persistent weak layers.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Rider triggered and remote avalanches are happening daily on a widespread surface hoar layer down ~50cm. The overlying slab has gained enough strength to propagate widely which means bigger consequences. This problem will persist for a while.
A touchy surface hoar layer continues to be reactive. Avalanches continue to be triggered, even in areas that have been heavily traveled. Some areas offer no clues of instability, but the potential for large avalanches exist.
A touchy surface hoar layer continues to be reactive. Avalanches continue to be triggered, even in areas that have been heavily traveled. Some areas offer no clues of instability, but the potential for large avalanches exist.
The December 17th surface hoar layer is still reactive.  Avalanches continue to be triggered even in locations previously skied. Some areas offer few clues of the instability but the potential for large avalanches continues.
The December 17th surface hoar layer is still reactive. Avalanches continue to be triggered even in locations previously skied. Some areas offer few clues of the instability but the potential for large avalanches continues.
The Dec17th surface hoar is still reactive, with most events at treeline. A size 2 skier-controlled avalanche released on this layer yesterday. Buried surface hoar requires careful decision making, especially as more new snow continues to fall.
The Dec17th surface hoar is still reactive, particularly at treeline. As new snow continues to fall the consequences of an avalanche on this layer increase, careful decision making is still necessary.
The Dec17 surface hoar is most reactive at treeline. As snow load continues the consequences of an avalanche on this layer increase, careful decision making is still necessary. We suspect yesterdays Teddy Bear Trees avalanche to be on this layer.
The December 17th surface hoar layer is still a real concern in the snowpack.  The significant storm snow load should be increasing the probability of triggering this deeper weak layer.  This layer is most prevalent at treeline elevations.
The December 17th layer produced our larger controlled slides yesterday.  Slides initiating in the storm snow have a good probability of overloading this layer as they gain volume.  This layer is most prevalent at treeline elevations.
The Dec 17 instability is still active. Yesterday a field team triggered a sz 1.5 on a convex roll at treeline that had previously released and since reloaded. This layer is widespread at treeline and should not be forgotten during decision making.
A 60cm+ thick cohesive slab now overlies a very touchy surface hoar layer. Tests indicate that it is likely to propagate if triggered, and avalanches have been remotely triggered from up to 300m away.
A 60cm+ thick cohesive slab now overlies a touchy surface hoar layer. Tests indicate that it may be triggered by light loads (ie you) and likely to propagate widely as the slab stiffens. Avalanches have been remotely triggered from up to 300m away.
A 60cm+ thick cohesive slab now overlies a touchy surface hoar layer. Tests indicate that it may be triggered by human loads and likely to propagate widely as the slab stiffens. Avalanches have been remotely triggered from up to 300m away.
Although this surface hoar layer is now buried 70-100cm deep, it will be easily triggered today with addition of the new snow load. Stability tests show that this layer has good propagation potential, making large avalanches likely.
Mid January surface hoar layer is now buried 60-100cm deep. This layer is likely to become more reactive with the current warm conditions and rain we are receiving. 
Natural and artillery triggered avalanches continue to fail on the Jan.15 surface hoar layer, now buried 60-100cm deep. This layer continues to propagate widely into very large avalanches. Avalanches may step down to a deeper layer from mid Dec.
Recent avalanches have been failing on the Jan.15 surface hoar layer, now buried 60-100cm deep. Some avalanches have stepped down to a deeper layer from mid Dec.
Jan 15 surface hoar layer is buried 60-100cm deep. This interface remains reactive due to large, poorly bonded surface hoar crystals.  Avalanches from large triggers such as cornice fall might step down to a deeper layer from Dec 17.
Jan 15 layer is buried 60-100cm deep. This layer remains a concern due to large, poorly bonded surface hoar crystals.  As snow continues to settle, this layer will require larger triggers to initiate. Cornice failures could step down to deep layers.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Below the light surface snow a soft slab sits on a touchy layer (see details tab). This layer is variable and hard to predict. It has been easily triggered where a sun crust is buried, but may also become more reactive at lower elevations.
The incoming storm has the potential to add significant load to a variable and hard to predict weak layer (see details tab).&nbsp; It has been easily triggered where a sun crust is buried, but is also expected to become more reactive at lower elevations.
The storm is upon us with 15cm snow overnight and another 20cm expected today.  Overloading and failure of the soft slab over the Jan 4th weak layer is expected today resulting in an avalanche cycle.
The Jan 4th interface and associated slab were very reactive yesterday. Expect less natural avalanche activity today but continued elevated sensitivity to human triggering on this layer.
The January 4th interface is getting deep enough in the snowpack to be less reactive to skier loads. If storm slabs are triggered the load may be sufficient to wake the Jan 4th up.
The January 4th interface is getting deep enough in the snowpack to be less reactive to skier loads. If storm slabs are triggered the load may be sufficient to wake the Jan 4th up.
The January 4th interface is getting deep enough in the snowpack to be less reactive to skier loads. Triggered wind slabs, or larger loads like a group of skiers, may be sufficient to wake the Jan 4th up.
The January 4th interface is buried 50-80cm deep; still within range of being triggered by a person. The incremental loading of smaller storms onto this interface makes it a tricky one to predict when/if it will fail.
Incremental loading by a series of storms is making a weak layer down 50-80cm an increasing concern. This layer lingers in many areas and is sporadically reactive, making it tricky to assess. When it fails, however, large avalanches are the result.
A surface hoar layer now down 60-100cm is likely to be touchy after being overloaded by the storm. This layer lingers in many areas and is sporadically reactive, making it tricky to assess. When it fails, however, large avalanches are the result.
A surface hoar layer now down 60-100cm is likely to be touchy after being overloaded by the storm. This layer lingers in many areas and is sporadically reactive, making it tricky to assess. When it fails, however, large avalanches are the result.
The January 4th interface was recently rapidly overloaded.  This layer is tricky to assess as it is not evenly distributed on the landscape.  It is also only sporadically reactive.  It can be found in many locations 60-100cm down in the snowpack.
The January 4th interface was rapidly overloaded &amp; woke up during last weeks storm. This layer is tricky to assess as it is not evenly distributed on the landscape &amp; sporadically reactive. It can be found in many locations 60-100cm deep.
The Jan 4th interface was rapidly overloaded &amp; woke up during last weeks storm. This layer is tricky to assess as it is not evenly distributed &amp; sporadically reactive. It's down 60-90cm &amp; was still producing whumfs yesterday in the Cannaught drainage
This layer is tricky to assess as it's not evenly distributed &amp; sporadically reactive. It's down 60-90 &amp; was still producing whumfs yesterday in the Cannaught drainage. It may be possible to trigger from a thin area or by a large trigger like cornice
The Jan 4th layer is a lingering concern, and it is a tricky to assess. Where it exists it is down 60-90cm, but it is not evenly distributed &amp; is sporadically reactive. It has been triggered recently by cornices, resulting in large avalanches.
The Jan 4th layer is a lingering concern, and it is a tricky one to assess. Where it exists it is down 80-120cm, but it is not evenly distributed &amp; is sporadically reactive. It has been triggered recently by cornices, resulting in large avalanches.
The Jan 4th layer is a lingering concern down 80-120cm in the snowpack.  it is not evenly distributed and is sporadically reactive.  Added load of storm slabs or cornice fall when triggered may provide sufficient load to wake this layer up.
The Jan 4th interface is a lingering concern.  It can be found down 80-120cm in the snowpack.  It is not evenly distributed and sporadically reactive.  Storm slab failure or cornice fracture may provide the load to wake this layer up.
Feb 10 interface lingers and may become reactive given prolonged sun or added load such as cornice fall or slab avalanche. 
Feb 10 interface lingers and is becoming difficult to forecast. In some areas there is surface hoar on a crust which is a good recipe for bad avalanches. It may become reactive given prolonged sun or added load such as cornice fall or slab avalanche
Feb 10 interface lingers and is becoming difficult to forecast. In some areas there is surface hoar on a crust which is a good recipe for bad avalanches. It may become reactive given prolonged sun or added load such as cornice fall or slab avalanche
Feb 10 interface lingers and is becoming difficult to forecast. In some areas there is surface hoar on a crust which is a good recipe for bad avalanches. It may become reactive given prolonged sun or added load such as cornice fall or slab avalanche
Feb 10 interface lingers and is becoming difficult to forecast. In some areas there is surface hoar on a crust which is a good recipe for bad avalanches. It may become reactive given prolonged sun or added load such as cornice fall or slab avalanche
The Feb 10th layer is buried 50-90cm. In some areas there is surface hoar on a crust, creating a dangerous combination. Sensitivity to triggering is variable among terrain features and careful consideration is required. Dig down and test this layer.
The Feb 10th layer is buried 50-90cm. In some areas there is surface hoar on a crust, creating a dangerous combination. Sensitivity to triggering is variable among terrain features and careful consideration is required. Dig down and test this layer.
The Feb 27 crust/ surface hoar layer is down 50-60cm and is producing moderate results in stability tests.&nbsp; When triggered, this layer could propagate into a large avalanche.&nbsp; Dig down and test this layer before committing. It is easy to identify.
The Feb 27 crust/ surface hoar layer is down 60cm and produces sudden results in stability tests. When triggered, this layer could propagate into a large avalanche. With warming temperatures this layer could fail as a moist slab at lower elevations.
The Feb 27 crust/surface hoar layer down 70cm produces sudden results in stability tests.  If triggered this layer could propagate into a large avalanche.  Continued warm temperatures could see this layer failing as a moist slab at lower elevations.
The February 27th interface is now down 70cm and was recently producing sudden planar results on field tests.  If triggered large avalanches could result.  Solar input today could increase this layer's sensitivity.
The February 27th interface is now down 70cm and is producing sporadic sudden planar results on field tests in sheltered areas. If triggered large avalanches could result. Daytime heating and solar input today could increase this layer's sensitivity.
The Feb 27th interface is now down 60cm &amp; is producing sudden planar results on a crust on S though W aspects. Test results on NE aspects showed stubborn results. Wind-loading and solar input will increase it's sensitivity.
The Feb 27th interface is down 60cm and is producing sudden planar results on a crust on S though W aspects. Test results on NE aspects showed stubborn results. Wind-loading will increase it's sensitivity. Wet slabs below treeline from rain.
The Feb 27th interface is down 80cm and is producing sudden planar results on a crust on S though W aspects and surface hoar in isolated spots. This layer has been active recently, triggered by small wind slab avalanches and cornice falls.
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.
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.
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.
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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">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.
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.
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.
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.
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.
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">
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.
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.
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.
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
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.
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.
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.
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.
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.
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.
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
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
The Halloween Crust layer is buried down approximately 70 cms, with the recent loading from heavy snow and strong winds we could see this layer become reactive. If it does the resulting avalanches would be large!
The Halloween Crust layer is buried down approximately 90cms. With the recent loading from heavy snow and strong winds we could see this layer become reactive. If it does &quot;wake up&quot; the resulting avalanches would be large!
The Halloween Crust layer is buried down approximately 100cms. With the recent loading from heavy snow and strong winds we could see this layer become reactive. If it does &quot;wake up&quot; the resulting avalanches would be large!
The Halloween crust, while stubborn is active given the right location.  This layer can be found down approx 100cm and is a developing problem.
Warm temperatures and continued loading should be enough to awaken the Oct 31st crust over the next 48hrs. The question is timing which may be later today or into Thursday morning.
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.
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.
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.
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.
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.
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.
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.
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 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 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 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 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 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.
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.
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.
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 as temperatures rise and new snow load is added.
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 could change as temperatures rise and new snow load is added.
The Dec 15 and Dec 27 surface hoar layers are widespread around tree line and buried ~60cm and ~30cm respectively. Warmer temps have promoted settlement of the upper snow pack, these layers may become reactive with additional load.
The Dec 15 and Dec 27 surface hoar layers are widespread around tree line and buried ~80cm and ~50cm respectively. Warmer temps have promoted settlement of the upper snow pack, these layers may become reactive with the recent storm snow.
The Dec 15th PWL is widespread around tree line and below tree line, buried ~80cm. New snow and warm temps have slabbed up the upper snow pack! This interface became reactive yesterday, burying one skier in a terrain trap.
The Dec 15th PWL is widespread around tree line and below tree line, buried ~80cm. New snow and warm temps have slabbed up the upper snow pack! This interface became reactive Monday, burying one skier in a terrain trap.
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.
This interface has become reactive with the recent new snow loading. It is most prevalent around treeline or on sheltered slopes the alpine. These avalanches are especially dangerous in terrain trap features where debris can pile up quickly.
This interface has become reactive with the recent new loading and is most prevalent around treeline or sheltered areas the alpine. These avalanches are especially dangerous in terrain traps where debris can pile up.
This interface has become reactive with the recent new loading and is most prevalent around treeline or sheltered areas the alpine. These avalanches are especially dangerous in terrain traps where debris can pile up.
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">
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.
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.
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.
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.
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.
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.
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.
We are now in a lower likelihood/very high consequence scenario with the January 4th and the Dec 15th surface hoar layers. These layers should not be overlooked and could be sensitive to thin areas.
We are now in a lower likelihood/very high consequence scenario with the January 4th and the Dec 15th surface hoar layers. These layers should not be overlooked and could be sensitive to human triggering in thin areas.
Persistent weak layers present a lower likelihood/very high consequence scenario with the January 4th and the Dec 15th surface hoar layers. These layers could be sensitive to human triggering in thin areas, or overloads from storm slab avalanches.
Persistent weak layers present a lower likelihood / high consequence scenario with the Jan 16th, 4th and Dec 15th surface hoar layers. These layers could be sensitive to human triggering in thin areas, or overloads from storm slab avalanches.
Persistent weak layers present a lower likelihood / high consequence scenario with the Jan 16th, 4th and Dec 15th surface hoar layers. These layers could be sensitive to human triggering in thin areas, or overloads from wind slab avalanches.
Persistent weak layers present a lower likelihood / high consequence scenario with the Jan 16th, 4th and Dec 15th surface hoar layers. These layers could be sensitive to human triggering in thin areas, or overloads from wind slab avalanches.
Persistent weak layers present a lower likelihood / high consequence scenario with the Jan 16th, 4th &amp;Dec 15th surface hoar layers buried deep. These layers could be overloaded and reach their tipping point with today's warming and heavy snowfall
Persistent weak layers present a lower likelihood / high consequence scenario with the Jan 16th, 4th &amp;Dec 15th surface hoar layers buried deep. These layers have woke up again resulting in large avalanches in the last 24hrs.
Persistent weak layers present a lower likelihood / high consequence scenario with the Jan 16th, 4th &amp;Dec 15th surface hoar layers buried deep. Triggered storm slabs may overload these layers resulting in large avalanches.
Natural avalanche activity on the persistent weak layers has dropped off. The Jan 16th, 4th &amp;Dec 15th surface hoar layers  are buried deep. Large triggers such as cornice fall or storm slabs may overload these 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Jan 5 Surface Hoar/ Suncrust layer is now buried 60 to 90 cm. Extra caution on sheltered North and East aspects. Dig down to identify this layer and avoid  steep or unsupported slopes where it is present. Triggering this layer would be serious.
Jan 5 interface in sheltered locations where preserved surface hoar can be found down 50 to 90 cm. Dig down often to identify this layer and avoid steep or unsupported slopes where surface hoar is present. Triggering this layer would be serious.
Associated with mid pack crusts we see a layer of sugary crystals underlying stiffer upper layers. Use more caution in thin areas as triggering&nbsp; may be more likely.
The crusts near the bottom of the snowpack have been weakening, especially on cooler North aspects.
Weak snow associated with crusts formed in Mid and early November can be found down about 70cm. This seems to be less significant on Southerly aspects. Triggering planar slopes from thin areas remains a possibility to consider.
Weak snow associated with crusts formed in Mid and early November can be found down about 70cm. This seems to be less significant on Southerly aspects. Triggering planar slopes from thin areas remains a possibility to consider.
This layer of weak sugary snow is found in many areas&nbsp; about 30 to 40cm from the ground. Triggering&nbsp; of this&nbsp; layer is more of a concern in shallower snowpack areas.
Weak faceted or sugary snow can be found almost everywhere 30 to 40 cm above the ground. Triggering in thin snowpack areas remains a concern. Some natural avalanche activity should be expected if snowfall amounts are significant Friday.
These recently formed slabs have proven to be very easy to trigger failing naturally and with light loads. Limit your exposure to significant slopes. Do not get taken by surprise by the long propagations or remote triggering that has been seen.
&nbsp; These slabs have become a little less touchy but are now buried by an additional load (60cm over the past week). Limit your exposure to significant slopes. Do not get taken by surprise. Long propagations are still likely.
Now 80 to 130 cm thick, these slabs threaten serious consequence. While the potential for triggering has dropped, do not get taken by surprise: long propagations and remote triggering may still be possible. Limit your exposure to significant slopes.
These slabs became less sensitive with cold temperatures and increasing depth. Now as conditions change with rapid loading and warming, limit your exposure to significant slopes. Do not get taken by surprise. Long propagations may still be possible.
These slabs became less sensitive with the increasing snowpack depth. As temperatures warm to ridgetop for Sun limit your exposure to significant slopes. Do not get taken by surprise. Long propagations may still be possible.
The weak February facet layer is now buried up to 170cm deep. Large loads such as cornices have triggered this layer where it is deep and it has failed with sluffing and heating where it is shallow. Long propagations are possible with this layer.
The weak facet layer is now buried by up to 170cm in treeline and alpine areas and below treeline is found down 50cm. Many avalanches fell over the weekend on this layer and it is a concern that may persist for some time. Triggering is possible!
The layer down 70-170 cm is still active as demonstrated Thur with avalanche control work up Akamina. Any slope not yet slid should be a concern. Windslabs, cornices, storm slabs or wet loose avalanches could step down and result in large avalanches.
70 to 110cm of snow is now settling above the early March Crusts. Variable shears persist in these slabs and they are well worth bearing in mind particularly as heating becomes more of a factor in the days and weeks to come.
Although unlikely, a large load such as a cornice failure or another avalanche could trigger all of the snow above these strong crusts. Significant and sustained heating or rain may also allow these slabs to become active such as is forecast Monday.
With significant heating in the forecast for Monday and Tuesday deep slabs may become active. Large loads such as falling cornices or smaller avalanches could trigger large avalanches on the March crusts or even the February facets.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_E6FD2046">With significant heating in the forecast for Tuesday deep slabs may become active. Large loads such as falling cornices or smaller avalanches could trigger large avalanches on the March crusts or even the February facets.
These slabs taper radically with elevation. Large slides resulted from failures in the recent storm snow over the crust that extends into the alpine.
These slabs taper radically with elevation and are sitting on a thick crust. Large slides resulted from failures in the recent storm snow over the crust that extends to around 2300m. These slabs may become easier to trigger with the expected heating.
The weak snow above the crust is now primed with a big enough slab for there to be serious consequences. In the alpine this problem will likely be limited to N and E aspects but at treeline it is widespread. Use extra care in open, sheltered terrain.
The weak snow above the crust is now primed with a big enough slab for there to be serious consequences. In the alpine this problem will likely be limited to N and E aspects but at treeline it is widespread. Use extra care in open, sheltered terrain.
Facets and isolated surface hoar above the Dec 13 crust remain the feature to watch in the snowpack. New load from storms or wind transport will make this more sensitive to triggering especially when combined with warm temperatures Wednesday.
Continue to watch for this layer which has proven to be extremely variable. Areas where these slabs are thin may should raise added caution.
Continue to watch for this layer which has proven to be extremely variable. Areas where these slabs are thin should raise added concern.
Continue to watch for this layer which has proven to be extremely variable. Be extra vigilant in thin snowpack areas, where the layer is more likely to be triggered by riders/climbers.
Although we have received recent extra snow load on this layer, it is not reacting. It is becoming less and less reactive as time goes by. Be mindful in thin snowpack areas, where the layer is more likely to be triggered by riders/climbers.
Although we have received recent extra snow load on this layer, it is not reacting. It is becoming less and less reactive as time goes by. Be mindful in thin snowpack areas, where the layer is more likely to be triggered by riders/climbers.
We received additional snow load last weekend but have still not seen any evidence of activity on this layer in our area even though neighbouring areas have. Be mindful in thin snowpack areas, where the layer is more likely to be triggered.
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.
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.
A weak layer that was buried in early January seems to be gaining strength, but this strength is being put to the test by wind loading, new snow and near-zero temperatures.
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.
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.
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.
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.
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.
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.
Avoid thin snowpack areas, use caution with large uniform features, and consider the potential for shallow trigger points.
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.
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.
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.