Wind is forecast to switch direction from southwest to northwest. Watch for wind slabs in lee terrain features. At treeline elevations, wind slabs may overly a crust which makes for an excellent sliding surface.
Significant cornice growth has been observed. Recent natural and explosive triggered cornices have produced large avalanches (size 2-3). Avoid overhead cornice hazard and stay well back from lee side of ridges.
Variable depth and density of wind slabs throughout the Alpine. These are most concerning in steep, convex and unsupported terrain.
Variable amounts of new snow will build new surface instabilities on Wednesday. In the west of the region, heavier snowfall will result in thicker storm slabs while closer to Smithers lighter snowfall combined with elevated southwest winds will form touchy but less widespread wind slabs.
Light snowfall overnight will combine with elevated and shifting winds to build new wind slabs that will need to be managed on Saturday. Be mindful of areas where wind slab and cornice distribution overlap.
Fresh snow combined with strong winds have formed a widespread storm slab / wind slab problems. ","type":"unstyled","depth":0,"inlineSty
Wind slabs of varying density are everywhere at upper elevations and range in thickness from 10 to 50cm. Human triggering is most likely in steep, convex and/or unsupported terrain.
Recent light snowfall combined with elevated and shifting winds will build new wind slabs. Be mindful of areas where wind slab and cornice distribution overlap.
Expect to find increasingly deep and potentially reactive wind slabs as you gain elevation into the alpine. Danger is low in areas that have a solid crust on the surface.
Cornices have become noticeably larger and more overhanging the past week.
Recent new snow falling with moderate to strong west and northwest winds will promote wind slab formation. In some places slabs may be sitting on a crust which may make for a favourable sliding surface.
Expect to find increasingly deep and potentially reactive wind slabs as you gain elevation.This problem is likely most pronounced on the east slopes of the region.
Deep weaknesses near the bottom of the snowpack have been failing under recently applied snow loads, resulting in very large, destructive avalanches. Many of these avalanches have run to valley bottom; hence posing a hazard to all elevations. These layers do not pose an avalanche problem in the south half of the region.
Strong to extreme winds have been redistributing new snow in the region into fresh wind slabs. Expect this problem to be greatest at higher elevations and in western parts of the region that received greater recent snow amounts. Keep your guard up around steep slopes in sheltered areas where a stubborn storm slab may still react to a human trigger.
Deep accumulations of new snow have seen extensive wind redistribution as a result of strong winds from varying directions (most recently from the northwest). Expect to find increasingly deep and reactive new wind slabs as you gain elevation. Keep your guard up around steep slopes in sheltered areas where a stubborn storm slab may still react to a human trigger.
Our new snow at higher elevations has seen extensive wind redistribution as a result of strong to extreme southwest winds. Expect to find increasingly deep and reactive new wind slabs as you gain elevation on Sunday. More widespread (all aspects) storm slabs may be found in eastern parts of the region that saw snowfall continue as temperatures dropped on Saturday.
Recent snowfall combined with shifting winds have built wind slabs on a variety of aspects.
Although the likelihood of triggering a deep persistent slab avalanche has reduced, doing so would result in a large and destructive avalanche. These layers do not pose an avalanche problem in the south half of the region.
Large reactive storm slabs continue to grow with another storm pulse crossing the region on Tuesday night. Natural avalanches are likely in the alpine due to strong wind throughout the day, while human triggering is a concern in steep terrain at all elevations.
Winds have drifted the recent storm snow into slabs on leeward features that may be possible to trigger. Winds have shifted from southwest to northwest, creating a tricky loading pattern. Areas where wind slabs have formed overlap with areas where cornices may be reaching their breaking point.
Winds have drifted the recent storm snow into slabs on leeward features that may be possible to trigger. Winds have changed in strength and direction from strong out of the southwest to moderate out of the northwest, creating a tricky loading pattern. Areas where wind slabs have formed overlap with areas where cornices may be reaching their breaking point.
Winds have drifted the recent storm snow into slabs on leeward features that may be possible to trigger. Winds have changed in strength and direction from extreme out of the southwest to moderate out of the northwest, creating a tricky loading pattern. Areas where wind slabs have formed overlap with areas where cornices may be reaching their breaking point.
Winds have drifted the recent storm snow into slabs on leeward features that may be possible to trigger. Winds have changed in strength and direction from extreme out of the southwest to moderate out of the northwest, creating a tricky loading pattern. Areas where wind slabs have formed overlap with areas where cornices may be reaching their breaking point.
Wind has recently switched direction from southwest to northwest. At treeline elevations, wind slabs may overly a crust which may make for a favourable sliding surface.
New snow falling through the day Tuesday combined with moderate to strong west winds will promote wind slab formation. In some places slabs may be sitting on a crust which may make for a favourable sliding surface.
Significant cornice growth has been observed. Recent natural and explosive triggered cornices have produced large avalanches (size 2-3). Avoid overhead cornice hazard and stay well back from lee side of ridges.
Deep weaknesses near the bottom of the snowpack have been failing under recently applied snow loads, resulting in very large, destructive avalanches. Many of these avalanches have run to valley bottom. These layers do not pose an avalanche problem in the south half of the region.
Another powerful storm pulse is taking aim at the region setting up to deliver upwards of 40 cm of new snow by the end of the day. High snowfall rates, strong winds, and rising temperatures mean that Increasingly thick and reactive storm slabs will form during the day
Variable forecast snowfall amounts will build new surface instabilities on Tuesday. In the west of the region, thick new storm slabs are forecast to form by the end of the day. Closer to Smithers, light new snow will combine with elevated southwest winds to form very touchy, but less widespread wind slabs.
Watch for wind slabs as you gain elevation. Danger is low in areas that have a solid crust on the surface.
Winds have drifted the recent storm snow into slabs on leeward features that may be possible to trigger. Winds have changed in strength and direction from extreme out of the southwest to moderate out of the northwest, creating a tricky loading pattern. Areas where wind slabs have formed overlap with areas where cornices may be reaching their breaking point.
Our new snow at higher elevations has seen extensive wind redistribution as a result of strong to extreme southwest winds. Expect to find increasingly deep and potentially reactive wind slabs as you gain elevation into the alpine. This problem is likely most pronounced on the east slope of the region.
Wind has recently switched direction from southwest to northwest and back again. At treeline elevations, wind slabs may overly a crust which may make for a favourable sliding surface.
Strong winds continue to build Wind Slabs at higher elevations on northerly and easterly facing terrain features. Similarly CORNICES continue to grow, as does my concern of overhead hazard because of them. With Tuesday's incoming storm, where more than 30 cm of new snow accumulates slopes steeper than 35 degrees are subject to developing a storm slab avalanche problems
Recent snowfall combined with elevated and shifting winds will build new wind slabs. Be mindful of areas where wind slab and cornice distribution overlap.
Overnight snowfall and elevated, shifting winds will be forming a new storm slab problem to manage on Saturday. This problem will likely increase with elevation and exposure to wind. Be especially mindful of areas where wind slab and cornice distribution overlap.
Storm slabs will begin to form above a widespread crust. Although not expected to be a long term problem, storm slabs may be fast and very sensitive to natural and human triggering Saturday. The best bet is to scale back the terrain choices as the storm snow begins to stack up throughout the day.
Recent storm snow is gradually gaining strength, but may remain reactive on steep wind loaded and sun-exposed slopes.
Light snowfall overnight will combine with elevated and shifting winds to build new wind slabs that will need to be managed on Saturday. Be mindful of areas where wind slab and cornice distribution overlap.
Watch for wind slabs as you gain elevation. Danger is low in areas that have a solid crust on the surface.
20-30 cm of snow is forecast to accumulate by Wednesday afternoon. Gusting winds at ridge top and temperatures rising during the storm will speed up slab formation as new snow accumulates. Expect storm slabs to become increasingly reactive throughout the day. New snow and wind may bring cornices to their tipping point.
15-25 cm of snow is forecast to accumulate by Wednesday afternoon. Gusting winds at ridge top and temperatures rising during the storm will speed up slab formation as new snow accumulates. Expect storm slabs to become increasingly reactive throughout the day. New snow and wind may bring cornices to their tipping point.
Recent light snowfall combined with elevated and shifting winds will build new wind slabs. Be mindful of areas where wind slab and cornice distribution overlap.
Recent light snowfall combined with elevated and shifting winds have built wind slabs on a variety of aspects.
Wind has recently switched direction from northwest to southwest and back again. At treeline elevations, wind slabs may overly a crust which may make for a favorable sliding surface.
Winds have drifted recent snow into slabs on leeward features that may be possible to trigger. Areas where wind slabs have formed overlap with areas where cornices may be reaching their breaking point.
Winds have drifted recent snow into slabs on leeward features that may be possible to trigger. Winds have changed in strength and direction from extreme out of the southwest to moderate out of the northwest, creating a tricky loading pattern. Areas where wind slabs have formed overlap with areas where cornices may be reaching their breaking point.
Winds have drifted recent snow into slabs on leeward features that may be possible to trigger. Areas where wind slabs have formed overlap with areas where cornices may be reaching their breaking point.
20-30 cm of snow is forecast to accumulate by Wednesday afternoon. Strong west winds and temperatures rising during the storm will speed up slab formation as new snow accumulates. Expect storm slabs to become increasingly reactive throughout the day. New snow and wind may bring cornices to their tipping point.
Fresh snow combined with strong winds have formed a widespread storm slab / wind slab problems. ","type":"unstyled","depth":0,"inlineSty
Moderate to strong wind from the northwest switching direction to the southwest will load lee terrain features with the new snow. Wind slabs size and sensitivity to triggering will likely increase through the day.
New snow falling with moderate to strong west and northwest winds will promote wind slab formation in lee terrain features in the alpine and at treeline. In some places slabs may be sitting on a crust which may make for a favorable sliding surface.
The south of the region is forecast to receive 20-35 cm of snow by Thursday evening whereas up to 10 cm of snow are expected in the north. The new snow will be redistributed by moderate to strong northwest wind and create sensitive wind slabs in lee terrain features in the alpine and at treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cglrs","text":"In the south of the region the precipitation will fall in form of rain below around 1000 m and might form loose wet avalanches.
Expect to find increasingly deep and potentially reactive wind slabs as you gain elevation. Danger is low in areas that have a solid crust on the surface.
Winds have drifted recent snow into slabs on leeward features that may be possible to trigger. Areas where wind slabs have formed overlap with areas where cornices may be reaching their breaking point.
Watch for wind slabs as you gain elevation, especially on the eastern slopes of the region. Danger is low in areas that have a solid crust on the surface.
Recent storm snow is gradually gaining strength, but will likely remain reactive on steep and wind loaded slopes at higher elevations. Watch sunny slopes?
Extremely strong southwest wind is forecast at all elevations picking up around mid day. Precipitation will start in the morning and continue into the night. The freezing level is rising from 800 m to 1300 m during the day. Above the freezing level where the precipitation will fall in form of snow the wind will redistribute the snow and create thick deposits in lee terrain features. The avalanche danger increases throughout the day with increasing snowfall amounts and continuing wind.
Moderate to strong southwest wind overnight combined with new snow will create fresh wind slabs in lee terrain features sensitive to human triggers. Highest snowfall amounts are expected at Kootenay Pass with 20-25 cm. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1cd15","text":"Wind has recently switched direction from southwest to northwest and back again. At treeline elevations, wind slabs may overly a crust from early February which may make for a favorable sliding surface.
Recent storms have agitated buried weak layers, resulting in some very large persistent slab avalanches. Although these avalanches are only possible in isolated locations, the consequences are severe. Recent areas of concern have been around Kispiox and Hazelton, but any large steep slope should be approached with caution.
Recent snowfall combined with elevated and shifting winds will build new wind slabs. Be mindful of areas where wind slab and cornice distribution overlap.
Moderate to strong southwest wind overnight combined with new snow will continue to form wind slabs throughout the night. These fresh wind slabs will be sensitive to human triggers. Be especially cautious when wind loaded slopes are exposed to the sun.
Storm slabs will begin to form above a widespread crust.  Although not expected to be a long term problem, storm slabs may be fast and very sensitive to natural and human triggering Saturday. The best bet is to scale back the terrain choices as the storm snow exceeds 20 cm.
Wind has recently switched direction from southwest to northwest and back again. Most of the recent avalanches released within the recent storm snow. Wind slabs might still be sensitive to human triggers especially when they get hit by the sun.
The peak of the snowfall is expected in the evening of Friday and snowfall will continue overnight ending Saturday early morning. Strong to extremely strong southwest wind is forecast at all elevations peaking in the first half of the night. Fresh wind slabs will be thick and sensitive to human triggers especially when the sun hits wind loaded slopes.
Wind slabs of varying density are everywhere at upper elevations and range in thickness from 10 to 50cm. Human triggering is most likely in steep, convex and/or unsupported terrain.
Strong southwest wind overnight combined with new snow will create fresh wind slabs in lee terrain features sensitive to human triggers. In the Coquihalla area where highest snowfall amounts of 20-30 cm are expected thick wind slabs will form. Be cautious when transitioning into wind affected terrain, especially when wind loaded slopes are exposed to the sun.
Extreme southerly wind during the last storm on Friday shifted to strong northerly wind Friday night and created wind slabs on all aspects. The snow surface is wind affected at treeline and in the alpine. Due to the shift of the wind direction it might be tricky to recognize previously formed wind slabs. Wind slabs might still be sensitive to human triggers especially when exposed to the sun.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"99a94","text":"The storm snow sits on a rain crust below 1900 m and it is uncertain how well the snow bonds to the crust.
Recent storm snow is gaining strength, but may remain reactive on steep wind loaded and sun-exposed slopes.  Strong winds may form new wind slabs at upper elevations.
Friday/Saturday's 5 to 15 cm of storm snow is likely beginning to form shallow slabs above a widespread crust. Although not expected to be a long term problem, storm slabs may be fast and sensitive to natural and human triggering Sunday as strong northwest winds form fresh slabs at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ang91","text":"
Previous storms have agitated buried weak layers, resulting in some very large persistent slab avalanches. Although these avalanches are only possible in isolated locations, the consequences are severe. Recent areas of concern have been around Kispiox and Hazelton, but any large steep slope should be approached with caution.
Overnight snowfall and elevated, shifting winds will be forming a new storm slab problem to manage on Saturday. This problem will likely increase with elevation and exposure to wind. Be especially mindful of areas where wind slab and cornice distribution overlap.
Wind has recently switched direction from northwest to southwest and back again. Westerly wind will increase in the afternoon and switch to southwest. At treeline elevations, wind slabs may overly a crust which may make for a favorable sliding surface.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4ndhp","text":"The west of the region received the highest snowfall amounts in the last days. Soft slab avalanches within the storm snow were observed in that area and might still be sensitive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dl0pc","text":"
The new snow will be redistributed by strong south wind and form sensitive wind slabs in lee terrain features in the alpine and at treeline. The avalanche danger will increase with increasing snowfall amounts in the afternoon. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"22hab","text":"In the south of the region the freezing level will rise to 1300 m during the day and the precipitation will turn from snow to rain weakening the snow pack.
Winds have drifted recent snow into slabs on leeward features that may be possible to trigger. Be mindful of areas where wind slab and cornice distribution overlap.
Winds have drifted recent snow into slabs on leeward features that may be possible to trigger. Be mindful of areas where wind slab and cornice distribution overlap.
Winds have drifted recent snow into slabs on leeward features that may be possible to trigger. Winds have changed in strength and direction from extreme out of the southwest to moderate out of the northwest, creating a tricky loading pattern. Be mindful of areas where wind slab and cornice distribution overlap.
Winds have drifted recent snow into slabs on leeward features that may be possible to trigger. Be mindful of areas where wind slab and cornice distribution overlap.
Friday's storm added 10-25 cm to the recent storm snow of 20-30 cm which sits on a crust well into the alpine. It is uncertain how well the new snow bonds with the old snow surface and how well the recent storm snow bonds with the crust which is about 30-50 cm deep. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8upg6","text":"Assess how well the storm snow bonds with the previous snow surface and the crust below before you commit to high consequence terrain.
Recent storms have agitated buried weak layers, resulting in some very large persistent slab avalanches. Although these avalanches are only possible in isolated locations, the consequences are severe. Recent areas of concern have been around Kispiox and Hazelton, but any large steep slope should be approached with caution.
Friday's storm delivered 20-30 cm in the south of the region and 10-15 cm in the north. The new snow sits on a variety of surface and it is uncertain how well the new snow bonds to the old snow surface. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"gql8","text":"The wind changed direction during the storm from southwest to northerly and created wind slabs on all aspects at treeline and in the alpine. These wind slabs might still be sensitive to human triggers especially when exposed to the sun.
Storm slabs are forming above a widespread crust, these slabs were quite touchy Saturday morning and natural avalanche activity to size 2 has been reported.  Natural activity will likely slow down Sunday but many slopes will be primed for human triggering.  Time to retreat to simple terrain choices and resist the urge to step out into complex terrain. Strong northwest wind is expected to form fresh sensitive wind slabs at upper elevations through the day Sunday.
Fresh snow combined with moderate to strong winds continue to fuel wind slab formation. The new snow is now obscuring lingering wind slabs that formed last weekend.
Recent snowfall combined with elevated and shifting winds built wind slabs. Be mindful of areas where wind slab and cornice distribution overlap.
Recent light snowfall combined with elevated and shifting winds have built wind slabs on a variety of aspects.
Another storm pulse is set to bring variable new snow amounts and avalanche problems to the region. Expect smaller but touchy wind slabs in areas that see the lower end of forecast snow, while more widespread storm slabs develop where more than 15 cm accumulates before the end of the day. Avalanches in surface layers around steep, rocky features at ridgecrest may carry the risk of triggering a deeper weak layer.
This layer produced a very large avalanche on Sunday, more details here.  When considering terrain you need to be thinking about the potential for deep avalanches. The most likely trigger points are thin rocky areas near ridge crest.  Rock outcroppings in exposed terrain should be avoided.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":67,"length":4,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanc
Recent light snowfall combined with elevated and shifting winds have built wind slabs. Be mindful of areas where wind slab and cornice distribution overlap.
Many very large, deep and destructive avalanches have been human triggered and have ran naturally since February 3rd. As visibility improves and the days grow longer there is a natural tendency to push into new terrain, but we need to recognize that places that haven't seen a lot of traffic may actually be more likely to produce these monster avalanches than places with lots of tracks. Regardless, any alpine feature that has not yet slid needs to be treated as suspect. The frequency of these avalanches seems to be picking up and this problem isn't expected to go away anytime soon.
Previous storms have agitated buried weak layers, resulting in some very large persistent slab avalanches. Although these avalanches are only possible in isolated locations, the consequences are severe. Recent areas of concern have been around Smithers, Kispiox and Hazelton, but any large steep slope should be approached with caution.
Storm slabs have formed above a widespread crust, Natural activity has likely slowed down, but human triggering remains possible. Potentially deep wind-fueled storm slabs can likely be found near ridge crest.
Accumulations of new snow over the past week have formed reactive slabs in steep wind affected terrain.
Storm slabs have formed above a widespread crust, Natural activity has  likely slowed down, but human triggering remains possible. Deeper wind-fueled storm slabs can likely be found near ridge crest.
Wind has recently switched direction from northwest to southwest and back again. Most of the recent avalanches released within the recent storm snow or on the thick rain crust underneath. Wind slabs might still be sensitive to human triggers.
The recent storm snow adds up to 30-50 cm and sits on a crust. It is uncertain how well the recent storm snow bonds with the crust. Assess the bond of the storm snow to the crust before you commit to high consequence terrain.
Friday's storm delivered 20-30 cm in the south of the region and 10-15 cm in the north. The wind changed direction during the storm from southwest to northerly and created wind slabs on all aspects at treeline and in the alpine. These wind slabs might still be sensitive to human triggers.
Extreme southerly wind during the last storm shifted to strong northerly wind and created wind slabs on all aspects. The snow surface is wind affected at treeline and in the alpine. Wind slabs might still be sensitive to human triggers. The recent storm snow sits on a rain crust below 2000 m and it is uncertain how well the snow bonds to the crust.
Fresh snow combined with moderate to strong winds continue to fuel wind slab formation. On Monday, new snow and strong winds will increase the likelihood of avalanches.
Recent light snowfall combined with elevated and shifting winds have built wind slabs on a variety of aspects.
Wind slabs have formed above a widespread crust. These wind slabs are growing resistant to human triggering as they age but could still be a problem, especially in steep terrain immediately lee of ridge crest as well as bigger more extreme terrain features.
Recent winds changed direction from southwest to northwest, creating wind slabs on north-, east- and south-facing slopes at treeline and in the alpine.
Many very large, deep and destructive avalanches have been human triggered and have ran naturally since February 3rd. As visibility improves and the days grow longer there is a natural tendency to push into new terrain, but we need to recognize that places that haven't seen a lot of traffic may actually be more likely to produce these monster avalanches than places with lots of tracks. Regardless, any alpine feature that has not yet slid needs to be treated as suspect. The frequency of these avalanches seems to be picking up and this problem isn't expected to go away anytime soon.
Accumulations of new snow over the past week have formed reactive slabs in steep wind affected terrain.
Strong to extreme NW/W/SW winds have created a variety of wind slab conditions. In some areas these slabs will be sensitive to human triggering.
Wind has recently switched direction from northwest to southwest and back again. Wind slabs may exist on a variety of aspects in exposed alpine terrain. The presence of a rain crust may increase the likelihood of triggering this layer.
New snow and strong to extreme winds are expected overnight through Thursday afternoon, which should reinvigorate the formation of fresh, sensitive storm slabs. New slabs will overlie heavily wind affected surfaces, which could allow for them to move fast and be very sensitive to triggers. Storm slabs will be hiding old hard slabs and there is potential for step down triggering of larger avalanches.
Strong to extreme NW/W/SW winds have created a variety of wind slab conditions. In some areas these slabs will be sensitive to human triggering.
Recent winds have shifted to the northwest, setting up wind slabs on mainly southeast aspects in exposed locations.
15 to 20 cm of new snow fell with strong wind out of the southwest and northwest Monday night. Strong wind is expected to continue Tuesday night into Wednesday.  New snow is also expected Wednesday which should allow for the continued formation of fresh sensitive storm slabs. These slabs rest on heavily wind affected terrain which could allow for them to be fast and very sensitive to both human and natural triggering. Storm slabs will be hiding old hard slabs and there is potential for the step down triggering of larger avalanches.
Watch for pockets of wind slab around ridges and steep rolls at upper elevations.  Keep an eye on cornices and overhead hazards, especially as the sun bakes the surface snow.
Variable winds have made new slabs on all aspects. West aspects have a more crossloaded look, while the east have a traditional lee loading pattern.  These slabs are easy to spot in the alpine and more isolated at treeline.
Recent light snowfall combined with elevated and shifting winds have built wind slabs on a variety of aspects.
Recent light snowfall combined with elevated and shifting winds have built wind slabs on a variety of aspects.
Winds overnight will be variable so expect new slabs on almost all aspects. Buried slabs are on all easterly aspects and in many places there are multiple layers.
New snow and strong winds have increased avalanche danger, particularly in exposed locations.
Recent snowfall combined with elevated and shifting winds built wind slabs. Be mindful of areas where wind slab and cornice distribution overlap.
Recent storm snow is gaining strength, but may remain reactive on steep wind loaded and sun-exposed slopes. Continued strong winds are likely forming fresh slabs at upper elevations.
Friday's storm delivered 20-30 cm in the south of the region and 10-15 cm in the north. The wind changed direction during the storm from southwest to northerly and created wind slabs on all aspects at treeline and in the alpine. These wind slabs might still be sensitive to human triggers.
Recent snowfall combined with elevated and shifting winds built wind slabs. Be mindful of areas where wind slab and cornice distribution overlap.
Recent light snowfall combined with elevated and shifting winds have built wind slabs. Be mindful of areas where wind slab and cornice distribution overlap.
Recent snowfall combined with shifting winds have built wind slabs. Be mindful of areas where wind slab and cornice distribution overlap.
Recent snowfall combined with shifting winds have built wind slabs on a variety of aspects.
Recent light snowfall combined with elevated and shifting winds have built wind slabs on a variety of aspects.
10 to 25 cm of new snow with strong to extreme wind Monday night into Tuesday is likely to form slabs that could be fast and touchy Tuesday. Storm slabs will be hiding previously active wind slabs which may allow for step down triggering of larger avalanches.
Wind slabs have formed above a widespread crust, Natural activity has slowed down, but human triggering remains possible. Potentially deep wind slabs can likely be found near ridge crest. A bit of new snow and wind could add to this problem through the day Tuesday.
Wind slabs have formed above a widespread crust, natural activity has slowed down, but human triggering remains possible. Potentially deep wind slabs can likely be found near ridge crest.
Watch for the formation of fresh wind slabs as strong wind generally out of the west/southwest and northwest continue Tuesday.
Recent snowfall combined with shifting winds have built wind slabs on a variety of aspects.
Wind has recently switched direction from northwest to southwest and back again. Most of the recent avalanches released within the recent storm snow or on the thick rain crust underneath. Wind slabs might still be sensitive to human triggers.
Recent wind slabs have been reported on north-, east- and south-facing slopes mostly in alpine terrain.
Watch for wind slabs in high elevation terrain.
Recent wind slabs have been reported on north-, east- and south-facing slopes, mostly in alpine terrain.
Our weak basal snowpack has produced sporadic very large avalanches - both natural and human triggered - in recent days. More details here and here. When considering terrain you need to be thinking about the potential for deep avalanches. The most likely trigger points are thin rocky areas near ridge crest.  Rock outcroppings in exposed terrain should be avoided.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":134,"length":4,"key":0},{"offset":143,"length":4,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/map?panel=mountain-information-network-submissions/06ada94d-20c8-413b-a0b9-b43a5f8c7ee2"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://w
Snowfall beginning Friday night is expected to accumulate with south-southwesterly winds. Expect slabs to increase in reactivity through Saturday with the touchiest deposits in wind-loaded areas.
A continuing supply of snowfall will sustain wind slab development. Recent wind direction has varied from northwest to southwest, creating wind slabs on a variety of aspects in exposed alpine and treeline terrain. Where wind slabs sit over a crust, they may be more sensitive to triggering.
New snow and wind will further wind slab development in lee features at alpine and treeline elevations. Recent winds have varied in direction so wind slabs can be found on a variety of aspects. Where wind slabs sit over a crust, they may be more sensitive to triggering.
A bit of new snow and wind will further wind slab development in lee features at alpine and treeline elevations. Recent winds have varied in direction so wind slabs can be found on a variety of aspects. Where wind slabs sit over a crust, they may be more sensitive to triggering.
10-25 cm of new snow, moderate wind and mild temperatures are forming new storm slabs. Watch for deep wind loaded pockets in lee features in the alpine.
Recent wind direction has varied from northwest to southwest, creating wind slabs on a variety of aspects in exposed alpine terrain. Where wind slabs sit over a crust, they may be more sensitive to triggering.
A concerning number of large, deep and destructive avalanches have been human triggered and have ran naturally on deeply buried weak layers in the last two weeks. Large alpine features that have not yet slid need to be treated as suspect, especially if they have seen significant recent wind loading. Wind slab or cornice releases are likely triggers for this problem. Human triggering is most likely in shallow, rocky areas where the snowpack transitions from thick to thin.
10 to 15 cm of new snow combined with wind out of the northwest, west and southwest is likely forming fresh wind slabs. Danger should be focused toward leeward features at ridgecrest that see the most pronounced wind loading.
Winds have switched from southwest during the snowfall to northwest so wind slabs can be found on a variety of aspects. Watch for deep wind loaded pockets in lee features in the alpine.
A bit of new snow and wind will further wind slab development in lee features at alpine and treeline elevations. Recent winds have varied in direction so wind slabs can be found on a variety of aspects. Be mindful that wind slab avalanches can serve as triggers for deeper weak layers, resulting in large and destructive avalanches.
A continuing supply of light snowfall will sustain wind slab development. Recent wind direction has varied from northwest to southwest, creating wind slabs on a variety of aspects in exposed alpine and treeline terrain. Where wind slabs sit over a crust, they may be more sensitive to triggering.
A continuing supply of light snowfall will sustain wind slab development. Recent wind direction has varied from northwest to southwest, creating wind slabs on a variety of aspects in exposed alpine and treeline terrain. Where wind slabs sit over a crust, they may be more sensitive to triggering.
Recent light snowfall combined with elevated and shifting winds have built wind slabs on a variety of aspects.
Recent winds have blown from the south, southwest and northwest. As a result, expect wind slabs to have formed on north-, northeast- and southeast-facing slopes.
Wind slabs that formed above our widespread crust are growing resistant to human triggering as they age but could still be a problem in steep terrain immediately lee of ridge crest as well as on bigger, more extreme terrain features.
Our weak basal snowpack has produced sporadic very large avalanches - both natural and human triggered - in recent days. More details here and here. It remains important to consider the potential for deep avalanches from suspect features in the region. The most likely trigger points are thin rocky areas near ridge crest.  Rock outcroppings in exposed terrain should be avoided.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":134,"length":4,"key":0},{"offset":143,"length":4,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/map?panel=mountain-information-network-submissions/06ada94d-20c8-413b-a0b9-b43a5f8c7ee2"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://w
A shift to northwest winds and an ample supply of loose surface snow is likely to expand distribution of new wind slabs across all aspects in exposed terrain. Keep your guard up in steeper sheltered areas where a stubborn storm slab may still react to a human trigger.
Recent light snowfall combined with elevated and shifting winds have built wind slabs on a variety of aspects.
Recent snowfall combined with shifting winds have built wind slabs on a variety of aspects.
Recent light snowfall combined with elevated and shifting winds have built wind slabs on a variety of aspects.
Lots of new snow has accumulated over the week and 20-30 cm more is on the way for Saturday. Reactivity of the new snow is to be expected, but there is concern for mid and pre-storm interfaces reaching a critical load with the new snow as well. Even if new storm slabs aren't stepping down, they may instead gather mass from recent snow while in motion. Exposed areas where all this new snow has been transported into thick slabs are especially concerning.
Variable winds have made new slabs on all aspects. West aspects have a more crossloaded look, while the east have a traditional lee loading pattern.
Lots of new snow has accumulated over the week! In many areas the new snow will be on a positive stabilizing trend, but human triggered avalanches remain a serious concern around steep slopes where the new snow is settling over crust layers as well as in exposed areas where much of this snow has been transported into thick and reactive wind slabs.
Consistent light snowfalls have been supplying steady moderate to strong winds with the building blocks for a fresh wind slab problem. Expect this problem to increase with elevation and be especially pronounced in the immediate lee of exposed terrain features. Keep in mind that wind slab avalanches can serve as triggers for deeper layers.
A bit of new snow has supplied forecast winds with the building blocks of a fresh wind slab problem. Consistently elevated winds should maintain slab formation throughout the day on Saturday. Expect this problem to increase with elevation and be especially pronounced in the immediate lee of exposed terrain features.
New snow and wind will further wind slab development in lee features at alpine and treeline elevations. Recent winds have varied in direction so wind slabs can be found on a variety of aspects. Be mindful that wind slab avalanches can serve as triggers for deeper weak layers, resulting in large and destructive avalanches.
West-southwesterly wind has redistributed the recent storm snow. Use caution around steep ridge features and immediate lee and cross-loaded terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"28cls","text":"
30-60 cm of snow from the past week is gradually settling and gaining strength, but it could still be possible to trigger storm slabs across a variety of terrain. Wind loaded terrain is the most likely place to trigger slabs, but snow at sheltered lower elevations could become unstable on isolate steep terrain features as well.
40-80 cm of recent snow could form large storm slabs, especially in steep wind affected terrain.
Incremental snowfall and strong west winds are expected to continue to build reactive wind slabs on lee features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
15+ cm of new snow that fell Saturday night is likely to form a fresh slab that may be sensitive to human triggering Sunday. This problem will likely be focused toward the wind loaded lees of exposed terrain features. Fresh accumulations are likely to shed easily from steep slopes that see sun.
Accumulations of new snow over the past week have formed reactive slabs in wind affected terrain, and could potentially settling into storm slabs in sheltered terrain as well.
Accumulations of new snow over the past week have potentially formed reactive slabs in steep wind affected terrain.
50 to 100 cm of snow has fallen across the region over the later half of the week and there's more snow in store this weekend.  Storm slabs have been widespread to size 2 and they could get bigger as the storm continues.  A buried surface hoar layer may make storm slabs particularly sensitive to human triggering.  Alpine storm slabs could be quite deep and destructive, especially in wind loaded pockets near ridgecrest.
Consistent recent light snowfall and strong westerly winds have formed wind slabs in exposed areas, particularly in the immediate lee of ridge features. Avalanches in surface layers around steep, rocky features at ridgecrest may carry the risk of triggering a deeper weak layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"com04","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bv7ih","text":"Steep sheltered slopes at lower elevations may still be capable of producing storm slab releases with a trigger, particularly in parts of the region with 30 or more cm of recent snow.
Cornices will weaken with daytime heat. Stand well back of them on ridges and avoid travelling beneath them.
Wind slabs may linger in steep, alpine terrain. The slabs have been reported as being hard immediately adjacent to ridges.
Recent winds have varied in direction so wind slabs can be found on a variety of aspects. Be mindful that wind slab avalanches can serve as triggers for deeper weak layers, resulting in large and destructive avalanches.
Hard wind slabs in consistently windy locations near ridgelines where the slabs grade from thin to thick are the biggest danger under current conditions. Avalanches could also occur on the sides of cross-loaded gullies.
Storm slab avalanches are possible to trigger on wind loaded or steep convex slopes, and may release naturally on sun-exposed slopes in the heat of the day.
This problem will likely be focused in wind loaded lees of exposed terrain features. Fresh accumulations are likely to shed easily from steep slopes that see sun.
10-40 cm of snow from the past week has seen redistribution at alpine and treeline elevations, with wind slabs forming in lee features. With winds easing Tuesday, natural activity will likely slow down but the potential for human triggering of wind loaded pockets may persist.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"com04","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bv7ih","text":"Steep sheltered slopes at lower elevations remain capable of producing storm slab releases with a trigger, particularly in parts of the region with 30 or more cm of recent snow.
Northwest to southwesterly winds have impacted the 10-30 cm recent storm snow resulting in wind slabs on a variety of aspects in exposed alpine and treeline terrain. Most of Saturdays reactive wind slabs were in upper treeline areas and above, generally near a large area of loose snow available for wind transport. Where wind slabs sit over a crust, they may be more sensitive to triggering.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3qf8f","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1u8jf","text":"
30-60 cm of recent snow could be forming unstable slab across a wide variety of terrain. Wind loaded terrain is the most likely place to trigger slabs, but snow at sheltered lower elevations could also be settling and forming more reactive slabs in steep terrain.
A touchy new storm slab problem will likely form over Saturday night. Total amounts will determine whether slabs will be widespread or focused to the immediate lee of exposed terrain features. Expect fresh snow to shed naturally from steep slopes when it sees sun for the first time on Sunday.
New snow and flurries will be impacted by winds, building slabs and adding to older, harder wind slabs. Expect to find more reactive deposits in areas with deeper deposits of fresh snow.
40-80 cm of snow from the past week is gradually settling and gaining strength, but it could still be possible to trigger storm slabs in wind affected or steep convex terrain.
As of Saturday afternoon the weekend storm has produced 10 to 20 cm of new snow, a bit more is expected Saturday night.  In wind exposed terrain this snow is being formed into slabs by ongoing winds from the southwest, west and northwest. In wind sheltered terrain the new snow may rest on a layer of surface hoar which could make it touchier than expected, especially in the trees.
Recent winds have varied in direction so wind slabs can be found on a variety of aspects. Be mindful that wind slab avalanches can serve as triggers for deeper weak layers, resulting in large and destructive avalanches.
Up to 30 cm of storm snow from the last few days rests on a variety of potential weak layers.  Watch for potentially touchy storm slabs, especially in wind exposed terrain.
By Sunday morning the total amount of storm snow from the last few days should be between 10 and 40 cm. This snow has combined with moderate to strong winds which have recently been out of both the northwest and southwest. Wind slabs can be found on a variety of aspects in exposed alpine and treeline terrain. Where wind slabs sit over a crust, they may be more sensitive to triggering.
The 30 cm snowfall from over the weekend has been impacted by wind. Look for reactive pockets around ridge features and steep rolls. Keep an eye on cornices and overhead hazards, especially if the sun comes out and warms the surface snow.
Accumulations of new snow over the past week have formed reactive slabs in steep wind affected terrain.
Windslabs up to 30cm thick should be expected in alpine areas.  Due to the variable winds of late, these slabs are being observed on all aspects.
20-40 cm recent storm snow accumulated over the weekend. In wind exposed terrain this snow is being formed into slabs by ongoing winds from the southwest, west and northwest. In wind sheltered terrain the new snow may rest on a layer of surface hoar which could make it touchier than expected, especially in the trees.
Expect wind slabs in lee features in the alpine and exposed areas at treeline. Natural activity my be slowing but the potential for human triggering persists. Keep in mind that wind slab avalanches can serve as triggers for deeper layers.
40-60 cm of new snow has accumulated over the past week. In many areas the new snow will be on a positive stabilizing trend, but human triggered avalanches remain a serious concern. Particularly on steep slopes where the new snow is settling over crust or surface hoar layers, as well as in exposed areas where much of this snow has been transported into thick and reactive wind slabs.
Accumulations of new snow over the past week have formed some reactive slabs in steep wind affected terrain.
Accumulations of new snow over the past week have already formed reactive slabs in wind affected terrain, and is potentially settling into storm slabs in sheltered terrain as well.
Accumulations of new snow over the past week have already formed reactive slabs in wind affected terrain, and is potentially settling into storm slabs in sheltered terrain as well.
Consistent recent light snowfall and strong westerly winds have formed wind slabs in exposed areas - especially in the immediate lee of ridge features. Avalanches in surface layers around steep, rocky features at ridgecrest may carry the risk of triggering a deeper weak layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"com04","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bv7ih","text":"Steep sheltered slopes at lower elevations may still be capable of producing storm slab releases with a trigger, particularly in parts of the region with 30 or more cm of recent snow.
Watch for steep or convex slopes at higher elevations where recent snow has been blown into wind slabs.
Storm slab avalanches are possible to trigger on wind loaded or steep convex slopes, and may release naturally on sun-exposed slopes in the heat of the day.
Consistent light snowfalls have been supplying steady moderate to strong winds with the building blocks of a fresh wind slab problem, and a bit more snow is on the way for Saturday night. Expect this problem to increase with elevation and be especially pronounced in the immediate lee of exposed terrain features.
30-60 cm of recent snow could be forming unstable slab across a wide variety of terrain. Wind loaded terrain is the most likely place to trigger slabs, but snow in sheltered terrain could also be settling and as a result become more reactive.
Windslabs up to 30cm thick should be expected in alpine areas.  Due to the variable winds of late, these slabs are being observed on all aspects.
40-60 cm of new snow has accumulated over the past week. In many areas the recent snow will be on a positive stabilizing trend, but human triggered avalanches remain a serious concern. Particularly on steep slopes where the new snow is settling over crust or surface hoar layers, as well as in exposed areas where much of this snow has been transported into thick wind slabs.
Watch for steep or convex slopes at higher elevations where wind slabs may exist.
15-30 cm of recent snow, and as much as 50 cm in the Coquihalla, may overly isolated patches of surface hoar in sheltered areas at low elevations or sun crusts on solar aspects. In the north of the region, the problem has been isolated to wind slab in the alpine. The Coquihalla received more snow and wind, and we still have uncertainty around the distribution and sensitivity of the weak interface. We anticipate the problem to extend into all elevation bands in this part of the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":96,"length":12,"key":0},{"offset":149,"length":10,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
Wind slabs can be found on a variety of aspects, the most reactive pockets may around lurk steep alpine and ridgetop lee features. Be mindful that wind slab avalanches can serve as triggers for deeper weak layers, resulting in large and destructive avalanches.
The 20 to 50 cm of old storm snow was largely untouched by wind until Sunday.  Southwest wind picked up Monday and is expected to be strong Monday night into Tuesday.  The formation of deep and potentially touchy wind slabs is likely.
Storm slab avalanches are possible to trigger on wind loaded or steep convex slopes, and may release naturally on sun-exposed slopes in the heat of the day.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. The most recent activity has been focused around the Golden area, but steep rocky terrain throughout the region should be treated with caution. Use extra caution on and below big alpine slopes getting hit by the sun.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Watch for pockets of wind slab around ridges and steep rolls at upper elevations.  Keep an eye on cornices and overhead hazards, especially as the sun bakes the surface snow.
30-60 cm of snow from the past week is gradually settling and gaining strength, but it could still be possible on wind loaded slopes and steep convex terrain. Use extra caution if big alpine slopes are getting hit by the sun.
This problem will likely be focused in wind loaded lees of exposed terrain features. Fresh snow is likely to shed easily from steep slopes that see sun.
50 to 120 cm of storm snow fell between Wednesday Feb 12 and Monday Feb 17.  The storm snow is reportedly settling nicely with the continued cold temperatures and the riding has been rediculously good. But, the sun begins to poke through Tuesday and then should be out in full force Wednesday.  We're not sure exactly what that is going to do, it may have very little effect, or it may bring on a sharp increase in avalanche activity.
10 to as much as 60 cm of storm snow rests on a widespread layer of buried surface hoar. These slabs have been most sensitive to triggering at lower elevations (at and below treeline) which is a setup that can catch us off guard. Wind fueled storm slabs can be found in the alpine and may be most sensitive on solar aspects where they rest on a sun crust.
The new snow may be more reactive than expected; especially on slopes where it has been wind loaded and is sitting on a layer of fragile surface hoar.
New snow and strong winds will make avalanches likely on steep, wind-affected slopes, particularly on Friday and Saturday.
ind slabs are everywhere in the Alpine and in lee and cross-loaded terrain at Treeline. Human triggering is very likely.
20-30 cm. of recent snow is sitting on top of a widespread layer of surface hoar at all elevations. On solar aspects the surface hoar is sitting on a crust, a particularly nasty combination.
Forecast overnight flurries and strong winds will contribute to new wind slab development. Freshly wind loaded pockets and older deposits that sit over surface hoar will be most reactive to human triggers.
15 to 25 cm of storm snow fell Sunday night into Monday. It seems to be most problematic in wind exposed features near ridge crest, a trend that is expected to continue into Tuesday.
0 to 30 cm of recent snow is sitting on top of a widespread layer of surface hoar at all elevations. On solar aspects the surface hoar is sitting on a crust, a particularly nasty combination.
Storm slab avalanches are possible to trigger on wind loaded or steep convex slopes, and may release naturally on sun-exposed slopes in the heat of the day.
15-30 cm of recent snow is sitting on top of a widespread layer of surface hoar at all elevations. On solar aspects the surface hoar is sitting on a crust, a particularly nasty combination.
The new snow may be more reactive than expected; especially on slopes where it has been wind loaded and is sitting on a layer of fragile surface hoar.
Natural activity has largely slowed down since the weekend but storm slabs may remain reactive to human triggers in wind loaded pockets in the alpine and where recent snow sits over surface hoar around treeline.
10 to 35 cm of storm snow was heavily affected by shifting wind Wednesday that even got into tree'd terrain. As temperatures warm and the sun comes out over the next few days human or potentially even natural avalanches become more likely.
0-25 cm of recent snow is sitting on top of a widespread layer of surface hoar at all elevations. On solar aspects the surface hoar is sitting on a crust, a particularly nasty combination.
Wind slabs may linger in steep, alpine terrain. Be mindful that wind slab avalanches can serve as a trigger for deeper weak layers, resulting in large and destructive avalanches.
This problem will likely be focused in wind loaded lees of exposed terrain features. Fresh snow is likely to shed easily from steep slopes that see sun.
The new snow may be more reactive than expected; especially on slopes where it has been wind loaded and is sitting on a layer of fragile surface hoar.
Heavy snowfall through the day Sunday will bring totals of 30-50 cm since Friday night. The new snow is not expected to be bonding well to old surfaces including surface facets, surface hoar and sun crusts. Storm slabs will be deepest in lee terrain features near ridges, as the snow is falling with strong southwest wind.
Storm slabs could reach 30 to 40 cm in thickness by midday Sunday, which overlies a weak layer of surface hoar crystals. Weather models are showing snowfall rates of up to 5 cm an hour Sunday morning. The snow will also fall with strong to extreme southwest wind, which will form slab properties within the snow quickly, particularly at treeline and alpine elevations. This is all a recipe for a natural avalanche cycle to occur on Sunday.
20 to 40 cm of snowfall over the weekend has consolidated into a slab that has been reactive to riders on all aspects. Near ridge lines, the snow has been blown around into lee terrain features. In more sheltered terrain, such as in open trees, the slab may overly a touchy layer of surface hoar. Sunny skies this week could continue to make these slabs touchy to human traffic.
Forecast overnight flurries and strong winds will contribute to new wind slab development. Freshly wind loaded pockets will be most reactive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dq9bn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bv7ih","text":"Steep sheltered slopes at lower elevations remain capable of producing human triggered storm slabs particularly in parts of the region where more than 30 cm of recent snow sits over surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":182,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type
A 20 to 30 cm slab has been reactive to riders in the past few days. The slab has been touchiest in open trees, where it rests on a layer of weak and feathery surface hoar. Near ridge lines, the slab is touchiest in lee terrain features due to recent wind transportation.
Storm slabs are 40 to 70 cm thick and may rest on a weak layer of surface hoar in sheltered terrain such as open trees, and on a melt-freeze crust on sun-exposed aspects.  The deepest deposits will likely be in lee terrain features near ridges, as the snow fell with strong south to west wind.
Wind transport continues to build wind slabs and cornices in the alpine. Fresh wind slabs will be most reactive to human triggered. Keep in mind that if triggered, thin wind slab avalanches can serve as triggers for deeper layers.  Below 2100 m, wind slabs sit on a the early Feb rain crust which could serve as an excellent bed surface.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":285,"length":5,"key":0},{"offset":325,"length":11,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=bed+s
10 to 35 cm of storm snow fell Sunday night into Monday. It seems to be  most problematic in wind exposed features at and above treeline, a trend that is expected to continue into Wednesday.
10 to as much as 60 cm of storm snow rests on a widespread layer of buried surface hoar. These slabs have been most sensitive to triggering at lower elevations (at and below treeline) which is a setup that can catch us off guard. Wind fueled storm slabs can be found in the alpine and may be most sensitive on solar aspects where they rest on a sun crust.
Wind transported snow from overnight Strong Westerly winds will build  wind slabs in the alpine, at ridge crests and exposed slopes at tree line. Both Hard and Soft wind slabs have been reported.  Fresh deposits in the immediate lee will be most reactive to human triggers, particularly on steep, unsupported and convex terrain.  In some areas there is the potential to step down to buried wind slab and buried rain crusts.  Below 2100 m, wind slabs 30-80 cm thick sit on a thick melt freeze crust from early February which could serve as an excellent bed surface.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":71,"length":10,"key":0},{"offset":492,"length":5,"key":1},{"offset":552,"length":11,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#wind-slab"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=bed+su
Wind transport continues to build wind slabs and cornices in the alpine. Fresh deposits will be most reactive to human triggers. Below 2100 m, wind slabs up to 80 cm thick sit on a thick melt freeze crust which could serve as an excellent bed surface.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":239,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=bed+su
Wind transport continues to build wind slabs and cornices in the alpine. Fresh deposits will be most reactive to human triggers. Below 2100 m, wind slabs up to 80 cm thick sit on a thick crust which could serve as an excellent bed surface. Keep in mind that if triggered, wind slab avalanches can serve as triggers for deeper layers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":227,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=bed+s
The new snow may be more reactive than expected; especially on slopes where it has been wind loaded and is sitting on a layer of fragile surface hoar.
We've had steady and strong south/southwest wind Monday through Wednesday which has stripped many slopes and welded hard slabs into others. Now we're going to add quite a bit of new storm snow to the problem along with a whole heap of wind. Wind fuelled storm slabs are expected to be problematic, but on the thinner side Thursday.  All bets are off Friday though if we actually get the 10 to 20 cm of snow on Thursday night. This is a time of change and we need to give the snowpack time to adjust.
Watch for new wind slabs with the incoming precipitation and moderate SW winds.
The new snow may be more reactive than expected; especially on slopes where it has been wind loaded and is sitting on a layer of fragile surface hoar.
25-35 cm of recent snow is sitting on top of a widespread layer of surface hoar at all elevations. On solar aspects the surface hoar is sitting on a crust, a particularly nasty combination.
10-15 cm of new snow and strong southwesterly winds have formed fresh storm slabs. Storm slabs will be especially reactive where freshly wind loaded pockets sit over surface hoar or sun crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":166,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/
mall storm slabs may be more reactive than expected; especially on slopes where it has been wind loaded and is sitting on a layer of fragile surface hoar.
Storm slabs are a serious problem at all elevations and may actually be the most sensitive at lower elevations.  At and below treeline up to 60 cm of snow rests on well-preserved surface hoar. The alpine is a bit of a different story, there the storm snow has been heavily affected by wind and slabs are 30 to 90 cm in depth. Storm slabs may rest on a melt-freeze crust on sun-exposed aspects too. The deepest deposits will likely be in lee terrain features near ridges, as the snow fell with strong south to west wind.
Storm slabs are 30 to 50 cm thick and may take some time to bond to underlying surfaces. All this recent snow may rest on a weak layer of surface hoar in sheltered terrain such as open trees, and it may not bond well to a melt-freeze crust on sun-exposed aspects.  The deepest deposits will likely be in lee terrain features near ridges, as the snow fell with strong south to west wind.
Wind transported snow from Strong winds will not only build hard and soft wind slabs in the alpine but may also impact ridges and exposed slopes at and below tree line.  Fresh slab deposits in the immediate lee will be most reactive to human triggers, particularly on steep, unsupported and convex terrain. Remember wind slabs are the most reactive as they are being formed.  Anticipate Cornice growth and be cautious around slopes threatened by overhead Cornice hazard.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":74,"length":10,"key":0},{"offset":387,"length":7,"key":1}],"data":{}},{"key":"fhil2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3ms58","text":"Keep in mind that if triggered, thin wind slab avalanches can serve as triggers for deeper layers such as buried wind slab, rain crusts and deep persistent basal facets. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#wind-slab"}},"1":{"type":"LI
10 to as much as 60 cm of storm snow rests on a widespread layer of buried surface hoar. These slabs have been most sensitive to triggering at lower elevations (at and below treeline) which is a setup that can catch us off guard. Wind fueled storm slabs can be found in the alpine and may be most sensitive on solar aspects where they rest on a sun crust.
Around 20 to 40 cm of snow is sitting on top of a widespread layer of surface hoar found at all elevations and on all aspects, and more snow will slowly accumulate in the coming days. On sun-exposed aspects, the surface hoar is sitting on a melt-freeze crust, which is a particularly nasty combination. To date, the layer has been most reactive between around 1700 and 2300 m and where the overlying snow has gained slab properties from snow load and wind affect. This elevation band of reactivity may increase in the coming days as new snow, strong wind, and warming air temperature may increase slab properties.
Variable depth and density of wind slabs throughout the Alpine. These are most concerning in steep, convex and unsupported terrain.
Warming temperatures and periods of sun are expected to promote cohesion in the recent snow over a lingering layer of buried surface hoar (February 22), making human-triggered avalanches likely. This problem will be more pronounced where the wind has drifted the recent snow. Although less likely, a more deeply buried surface hoar layer (February 13th) down 60-80 cm may also become more reactive as a persistent weak layer with warming temperatures.
The new snow may be more reactive than expected; especially on slopes where it has been wind loaded and is sitting on a layer of fragile surface hoar.
We're expecting 5 to 10 cm Sunday night with southwest wind and another 5 to 10 cm Monday, but some areas could see as much as 20 cm. New snow is sitting on a wide variety of old surfaces including facets and possibly surface hoar which may allow for particularly touchy storm slabs on Monday.
Watch for wet loose avalanches on steep sun-exposed slopes and remember cornices could become weak with daytime heating.
Friday night's snowfall likely won't bond well to underlying layers, as it will fall into a weak layer of surface hoar or faceted grains at and above treeline, or a melt-freeze crust on sun-exposed slopes. The slabs will be deepest in lee terrain features near ridges, as the snow fell with strong southwest wind.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. The most recent activity has been focused around the Golden area, but steep, rocky, shallow terrain throughout the region should be treated with caution. Avoid big alpine slopes that are threatened by cornices overhead.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
15 to 25 cm of storm snow fell Sunday night into Monday. It seems to be most problematic in wind exposed features near ridge crest, a trend that is expected to continue into Wednesday.
As storm slabs build through the day Sunday, 10-30 cm of new snow overlies surface facets, surface hoar and sun crusts. Recent avalanche activity indicates a poor bond between these old surfaces and the new snow. Storm slabs will be deepest in lee terrain features near ridges, as the snow is falling with strong southwest wind.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":83,"length":6,"key":0},{"offset":91,"length":12,"key":1},{"offset":108,"length":10,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url
Isolated pockets of wind slab may linger in steep, alpine terrain.
25-45 cm of recent storm snow and strong west winds have formed wind slabs in many areas. These slabs will be the most reactive in wind loaded areas.
New snow with strong winds changing in direction (from south to west to northwest) may form a complex pattern of reactive wind slabs on leeward terrain features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
10 cm of new snow and strong southwesterly winds have formed fresh storm slabs that will be reactive to human triggers. Storm slabs will be especially reactive where freshly wind loaded pockets sit over surface hoar or sun crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":203,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/
Around 20 to 30 cm of snow from Thursday has started to consolidate into a slab in sheltered terrain. In exposed terrain at higher elevations, the snow fell with strong to extreme south to west wind, forming wind slabs in lee terrain features. These slabs may remain touchy to human traffic on Friday. Sun-exposed slopes should be treated as suspect during periods of intense sun. Cornices have also likely grown large and could fail during sunny conditions or from the weight of a human.
Expect loose dry or wet avalanches to run in steep terrain facing the sun during the heat of the day.
Isolated pockets of wind slab may linger in steep, alpine terrain.
10-20 cm of new snow is forecast to fall by the end of the day Friday. Strong winds are expected to redistribute new snow into deeper slabs in lee features. Storm slabs will be especially reactive where freshly wind loaded pockets sit over surface hoar or sun crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":240,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/
30 to 50 cm of settled snow rests on a widespread layer of buried surface hoar. While this weak layer is thought to be present at all elevations, these slabs have been most sensitive to triggering at treeline which is a setup that can catch us off guard. Watch for deeper slabs at ridgecrest too.
20-35 cm of recent snow is sitting on top of a widespread layer of surface hoar at all elevations. On solar aspects the surface hoar is sitting on a crust, a particularly nasty combination.
Moderate southerly winds may create small wind slabs that are possible to trigger in steep, convex terrain below ridgetops.
20 to 35 cm of snow from the past weekend has formed storm slabs that have been producing avalanches up to size 2.
Moderate southerly winds may create small wind slabs that are possible to trigger in steep, convex terrain below ridgetops.
A 20 to 30 cm slab has been reactive to riders in the past few days. The slab has been touchiest in open trees around Kootenay Pass, where it rests on a layer of weak and feathery surface hoar. The spatial distribution of the surface hoar layer is unclear and may be spottier in the remainder of the region. Near ridge lines, the slab has been touchiest in lee terrain features due to recent wind transportation.
Wind slab formation may resume with increasing winds Wednesday with what little snow remains available for wind transport in the alpine. Fresh wind slabs will be especially sensitive to human triggering.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":107,"length":14,"key":0}],"data":{}},{"key":"com04","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bv7ih","text":"Steep sheltered slopes at lower elevations remain capable of producing human triggered storm slabs particularly in parts of the region where more than 30 cm of recent snow sits over surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":
Moderate southerly winds may create small wind slabs that are possible to trigger in steep, convex terrain below ridgetops.
Expect wind slabs in lee features in the alpine and exposed areas at treeline. Natural activity my be slowing but the potential for human triggering persists. Keep in mind that wind slab avalanches can serve as triggers for deeper layers.
Storm slab avalanches are possible to trigger on wind loaded or steep convex slopes, and may release naturally on sun-exposed slopes in the heat of the day.
Storm slab avalanches are possible to trigger on wind loaded or steep convex slopes, and may release naturally on sun-exposed slopes in the heat of the day.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. The most recent activity has been focused around the Golden area, but steep, rocky, shallow terrain throughout the region should be treated with caution. Avoid big alpine slopes that are threatened by cornices overhead, especially when they are getting hit by the sun.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Where soft snow remains available for transport in the alpine, wind slab development will likely resume as winds pick up in the afternoon. Fresh deposits will be most reactive to human triggers. Below 2100 m, wind slabs sit on a thick melt freeze crust which could serve as an excellent bed surface. Keep in mind that if triggered, wind slab avalanches can serve as triggers for deeper layers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":287,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=bed+su
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. The most recent activity has been focused around the Golden area, but steep, rocky, shallow terrain throughout the region should be treated with caution. Avoid big alpine slopes that are threatened by cornices overhead.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Snowfall Friday night may not bond well to underlying layers of weak surface hoar crystals, faceted grains, or a melt-freeze crust. The most snow is forecast in the northern half of the region, where upwards of 15 cm may accumulate. The southern half of the region may only see 5 cm. Nonetheless, the snow will fall with strong westerly wind, so slabs will be thicker and potentially touchier in lee terrain features.
Storm slabs are expected to build over the day as the storm passes. Snowfall rates could reach 3 to 5 cm per hour and winds are expected to be strong from the southwest. The snow will fall onto a weak layer of surface hoar and may not bond to it.
Where soft snow remains available for transport in the alpine, wind slab development will likely resume as winds pick up in the afternoon. Freshly deposits will be most reactive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"25qlv","text":"Below 2100 m, deep wind slabs sit on a thick melt freeze crust which could serve as an excellent bed surface.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":97,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=bed+su
As of Monday morning we have received 10-20 cm of fresh snow and could expect a bit more throughout the day. New snow is sitting on a wide variety of old surfaces including facets and surface hoar which may allow for particularly touchy storm slabs on Monday.
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a buried weak layer lingers in the snowpack. The likelihood of triggering the layer is low right now with relatively benign weather, but if you were to do so it would likely be in a shallow and rocky start zone. The likelihood will increase with a changing weather pattern this weekend.
50 to 120 cm of storm snow fell between Wednesday Feb 12 and Monday Feb 17.  The storm snow is reportedly settling nicely with time and continued cold temperatures on it's side.  These conditions have also allowed for the riding quality to be ridiculously good, especially in wind sheltered mid and low elevation terrain.  But at upper elevations it's a bit of a different story, fresh wind slabs likely continue to form at and above treeline.
Around 10 to 15 cm of snow is expected to accumulate Friday night, which will fall onto a weak layer of surface hoar crystals. The snow will likely form slab properties quickly, as it will fall with strong westerly wind. This is a recipe for storm slabs that could be likely to trigger and that could propagate far.
30-60 cm of recent snow is settling into a storm slab over a weak interface consisting of surface facets, surface hoar or sun crusts (aspect/elevation dependent). Storm slabs will be deepest where strong winds have loaded lee terrain features in alpine and exposed treeline areas. A forecast switch in wind direction from south to northwest Monday will mean wind loading on a variety of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":98,"length":6,"key":0},{"offset":106,"length":12,"key":1},{"offset":122,"length":10,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#faceted-snow","target":"_self","url":"https://www.avalanche.ca/glossary#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
Forecast strong to extreme winds are expected to redistribute 30-50 cm of recent snow, forming deep slabs in lee features. Storm slabs will be especially reactive where freshly wind loaded pockets sit over surface hoar or sun crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":206,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/
20-40 cm of recent snow is sitting on top of a widespread layer of surface hoar at all elevations. On solar aspects the surface hoar is sitting on a crust, a particularly nasty combination.  While some slopes only have enough snow to produce small avalanches, others have thick enough storm slabs to produce larger and more dangerous avalanches.
The widespread wind slabs are now hidden under 10cm of fresh low density snow. These are primarily a concern in steep, convex and unsupported terrain. Thin areas may also be trigger points. As winds pick up speed from the NW on Tuesday, watch for fresh wind slabs on E through S aspects.
Strong southwest wind and a dusting of new snow will form new wind slabs in lee terrain features near ridges.
Fresh snow and wind adds to an already serious avalanche problem.  By Wednesday morning up to 20 cm of new snow and 60 cm of older snow (for a total of 80 cm) may be resting on well-preserved surface hoar at and below treeline. This kind of setup could open the door to a situation where it \"goes electric\" as deep avalanches run naturally in sheltered terrain at and below treeline.  Even deeper slabs are expected in the alpine as strong southwest forms thick wind fuelled storm slabs. Solar aspects (those that face south and west) have a buried crust that could serve as a bed surface for very large avalanches.
15-30 cm of recent snow is sitting on top of a widespread layer of surface hoar at all elevations. On solar aspects the surface hoar is sitting on a crust, a particularly nasty combination.
round 10 to 30 cm of recent snow has been blown around by variable wind. This snow may be sitting on top of a layer of surface hoar found at all elevations and on all aspects. On solar aspects, the surface hoar may be sitting on a melt-freeze crust, which is a particularly nasty combination. For now, the recent snow has been touchiest where wind affected. Once enough snow accumulates and forms slab properties, this problem may become widespread. This is most likely to occur first in the snowier spots in the west of the region.
20-40 cm of recent snow sits over a weak interface consisting of surface facets, surface hoar or sun crusts (aspect/elevation dependent). Loose dry and small soft slab avalanche activity Sunday has demonstrated that this interface is weak but the overlying snow lacks slab character and propagation propensity. As the storm snow settles into a slab, potential size will increase as reactivity persists. Storm slabs will be deepest where strong winds have loaded lee terrain features in alpine and exposed treeline areas. A forecast switch in wind direction from south to northwest Monday will mean wind loading on a variety of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":73,"length":6,"key":0},{"offset":81,"length":12,"key":1},{"offset":97,"length":10,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#faceted-snow","target":"_self","url":"https://www.avalanche.ca/glossary#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
A widespread layer of surface hoar found at all elevations and on all aspects is starting to become reactive to human traffic. The layer is bured around 20 to 40 cm deep and more snow and strong wind will continue to load in on Wednesday. On south aspects, the surface hoar may be found overlying a melt-freeze crust, which is a particularly nasty combination. Travel conservatively and assess this layer before committing to avalanche terrain. Also be aware that snowfall is occurring with strong southwest wind, which will quickly load lee terrain features near ridges.
Wind transported snow from Strong winds will build hard and soft wind slabs in the alpine and may also impact ridges and exposed slopes at and below tree line.  Fresh slab deposits in the immediate lee will be most reactive to human triggers, particularly on steep, unsupported and convex terrain. Remember wind slabs are the most reactive as they are being formed. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":65,"length":10,"key":0}],"data":{}},{"key":"ele51","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fifmn","text":"In some areas there is the potential to step down to buried wind slab and buried rain crusts.  Below 2100 m, wind slabs 30-80 cm thick sit on a thick melt freeze crust from early February which could serve as an excellent bed surface.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":162,"length":5,"key":1},{"offset":222,"length":11,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#wind-slab"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=bed+su
15-30 cm of recent snow sits over a layer of surface facets, surface hoar in sheltered shady aspects or sun crusts on solar aspects. Reactivity at this interface has persisted since the storm and it is expected to remain sensitive to human triggering. Storm slabs will be deepest and most reactive where wind has loaded lee terrain features in alpine and exposed treeline areas. Recent winds have varied in direction from south to northwest, wind loading on a variety of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":53,"length":6,"key":0},{"offset":61,"length":12,"key":1},{"offset":104,"length":10,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#faceted-snow","target":"_self","url":"https://www.avalanche.ca/glossary#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
A thick rain crust can be found 30 to 60 cm below the surface. As temperatures warm and slopes are subject to the sun, the overlying slab could start to wake up. Large cornices are a potential trigger for these slabs.
A thick rain crust can be found 30 to 60 cm below the surface. As temperatures warm and slopes are subject to the sun, the overlying slab could start to wake up.  Strong sun and warming temperatures are also likely to warm cornices which could trigger avalanches when they fail.
With more snow and wind in the forecast expect fresh wind slabs to form on a variety of aspects. Their size and likelihood will escalate throughout the week. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6g33c","text":"Also be aware of old wind slabs that may be buried beneath the new snow and could still be possible to trigger in steep terrain.
New snow with winds changing in direction (from south to west to northwest) may form a complex pattern of reactive wind slabs on leeward terrain features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
Storm slabs are a serious problem at all elevations, and we need to be extra cautious at and below treeline where up to 60 cm of snow rests on well-preserved surface hoar. The alpine is a different story, at that elevation the storm snow has been heavily affected by wind and slabs are 30 to 90+ cm in depth. Storm slabs may rest on a melt-freeze crust on sun-exposed aspects too. The deepest deposits will likely be in lee terrain features near ridges, as the snow fell with strong south to west wind. The train of coming storms will exacerbate all of these issues.
30-60 cm of recent snow is settling into reactive storm slab over a weak interface consisting of surface facets, surface hoar or sun crusts (aspect/elevation dependent). Storm slabs will be deepest where strong winds have loaded lee terrain features in alpine and exposed treeline areas. A forecast switch in wind direction from south to northwest Monday will mean wind loading on a variety of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":105,"length":6,"key":0},{"offset":113,"length":12,"key":1},{"offset":129,"length":10,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#faceted-snow","target":"_self","url":"https://www.avalanche.ca/glossary#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
10-20 cm of recent snow sits over a weak interface consisting of surface facets, surface hoar or sun crusts (aspect/elevation dependent). Loose dry and small soft slab avalanche activity Sunday has demonstrated that this interface is weak but the overlying snow lacks slab character and propagation propensity. As the storm snow settles into a slab, potential size will increase as reactivity persists. Storm slabs will be deepest where strong winds have loaded lee terrain features in alpine and exposed treeline areas. A forecast switch in wind direction from south to northwest Monday will mean wind loading on a variety of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":73,"length":6,"key":0},{"offset":81,"length":12,"key":1},{"offset":97,"length":10,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#faceted-snow","target":"_self","url":"https://www.avalanche.ca/glossary#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
10 to 35 cm of storm snow fell Sunday night into Monday. It seems to be  most problematic in wind exposed features at and above treeline, a trend that is expected to continue into Tuesday.
15-30 cm of recent snow, and as much as 50 cm in the Coquihalla, may overly isolated patches of surface hoar in sheltered areas at low elevations or sun crusts on solar aspects. In parts of the region that did not receive wind, the snow remains low density, unconsolidated and evenly distributed all except exposed ridgetops. Increasing winds on Tuesday are expected to accelerate slab development in lee features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":96,"length":12,"key":0},{"offset":149,"length":10,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
New snow and strong winds will make avalanches likely on steep, wind-affected slopes, especially on Wednesday and Thursday.
Snowfall continues to load a widespread layer of surface hoar found at all elevations. The surface hoar is sitting on a crust on sun-exposed slopes, which is a particularly nasty combination. There is currently 30 to 50 cm of snow that overlies it and another 10 to 20 cm of snow is forecast until Thursday afternoon. This problem will become reactive once enough snowfall has accumulated and slab properties form. So far, the layer has been most reactive at treeline and alpine elevations, where the recent snow has been redistributed by the wind.
Around 20 to 40 cm of snow is sitting on top of a widespread layer of surface hoar found at all elevations and on all aspects, and more snow will slowly accumulate in the coming days. On sun-exposed aspects, the surface hoar is sitting on a melt-freeze crust, which is a particularly nasty combination. Travel conservatively and assess this layer before committing to avalanche terrain. Also be aware that snowfall is occurring with strong southwest wind, which will quickly load lee terrain features near ridges.
The widespread wind slabs are now hidden under 10cm of fresh low density snow. These are primarily a concern in steep, convex and unsupported terrain. Thin areas may also be trigger points. Expect to find fresh wind slabs on E through S aspects.
20-30 cm of recent snow with winds changing in direction (from south to west to northwest) has formed a complex pattern of reactive wind slabs on leeward terrain features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
30-60 cm of recent snow is settling into a storm slab over a weak interface consisting of surface hoar, sun crusts or a combination of the two. This is not typical of this region and will take longer than usual to heal. It is expected to persist at least through the week. The most problematic interfaces will be found on north-facing (shady) aspects in open areas around treeline sheltered from the wind with a clear sky view. It is buried deep enough that it is stubborn to human triggers, but may be reactive where overlying snow depths vary due to wind. Warming temperatures and sun can speed up slab settlement and may increase reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":144,"length":129,"style":"BOLD"}],"entityRanges":[{"offset":90,"length":12,"key":0},{"offset":104,"length":10,"key":1}],"data":{}},{"key":"90g8k","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4lg6i","text":"Storm slabs will be deepest where strong winds have loaded lee terrain features in alpine and exposed treeline areas. Recent wind has varied in direction from south to northwest, so expect to see wind loading on a variety of lee aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
Cornices have grown large and loom over many ridge lines. They have potential to fail naturally during the heat of the day and could also fail if we get too close to them. Give them a wide berth.
30 to as 50 cm of storm snow rests on a widespread layer of buried surface hoar. These slabs have been most sensitive to triggering at lower elevations (at and below treeline) which is a setup that can catch us off guard. Wind fueled storm slabs can be found in the alpine and may be most sensitive on solar aspects where they rest on a sun crust.
round 10 to 30 cm of recent snow has been blown around by variable wind. This snow may be sitting on top of a layer of surface hoar found at all elevations and on all aspects. The recent snow has been touchiest where wind affected. Once enough snow accumulates and forms slab properties, this problem may become widespread. The western half of the region may be reaching a threshold amount of snow to be able to trigger the surface hoar and a warming trend could help build slab properties across the region.
20-30 cm of recent snow with strong winds changing in direction (from south to west to northwest) has formed a complex pattern of reactive wind slabs on leeward terrain features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
30-60 cm of recent snow sits over a layer of widespread surface facets, isolated patched of surface hoar in sheltered areas or sun crusts on solar aspects. Storm slabs will be deepest where strong winds have loaded lee terrain features in alpine and exposed treeline areas. Recent winds have varied in direction from south to northwest, wind loading on a variety of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":64,"length":6,"key":0},{"offset":92,"length":12,"key":1},{"offset":127,"length":10,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#faceted-snow","target":"_self","url":"https://www.avalanche.ca/glossary#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
With more snow and wind in the forecast expect fresh wind slabs to form on a variety of aspects. Their size and likelihood will escalate throughout the week. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6g33c","text":"Also be aware of old wind slabs that may be buried beneath the new snow and could still be possible to trigger in steep terrain.
Small inputs of new snow and wind will form fresh wind slabs in lees of exposed alpine terrain. Older wind slabs may sit over a weak interface, particularly around treeline.
Wind effect has been variable through the region. In the northeast of the region, wind loading may be isolated to soft slabs in immediate lees in the alpine. More extensive wind slab development has been reported in the western reaches of the region, and is suspected in the Coquihalla. Wind slabs may sit over a weak interface, particularly around treeline.
10 to 35 cm of storm snow was heavily affected by shifting wind Wednesday that even got into tree'd terrain. As temperatures warm and the sun comes out over the next few days human or potentially even natural avalanches become more likely.
30 to as 50 cm of storm snow rests on a widespread layer of buried surface hoar. These slabs have been most sensitive to triggering at lower elevations (at and below treeline) which is a setup that can catch us off guard. Wind fueled storm slabs can be found in the alpine and may be most sensitive on solar aspects where they rest on a sun crust.
15-30 cm of recent snow sits over a weak interface consisting of surface facets, surface hoar or sun crusts (aspect/elevation dependent). Touchy but small avalanche activity Sunday and Monday has demonstrated that this interface is weak but the overlying snow lacks slab character and propagation propensity. As the storm snow settles into a slab, potential avalanche size may increase as reactivity persists. Storm slabs will be deepest where strong winds have loaded lee terrain features in alpine and exposed treeline areas. Recent winds have varied in direction from south to northwest, wind loading on a variety of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":73,"length":6,"key":0},{"offset":81,"length":12,"key":1},{"offset":97,"length":10,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#faceted-snow","target":"_self","url":"https://www.avalanche.ca/glossary#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
30-60 cm of recent snow is settling into a storm slab over a weak interface consisting of surface facets, surface hoar or sun crusts (aspect/elevation dependent). This is not typical of this region and will take longer than usual to heal. The most problematic interfaces will be found in open areas around treeline sheltered from the wind with a clear sky view. A local ski area forecaster shared this advice on Sunday.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":163,"length":76,"style":"BOLD"}],"entityRanges":[{"offset":98,"length":6,"key":0},{"offset":106,"length":12,"key":1},{"offset":122,"length":10,"key":2},{"offset":397,"length":11,"key":3}],"data":{}},{"key":"90g8k","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4lg6i","text":"Storm slabs will be deepest where strong winds have loaded lee terrain features in alpine and exposed treeline areas. Recent wind has varied in direction from south to northwest, so expect to see wind loading on a variety of lee aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#faceted-snow","target":"_self","url":"https://www.avalanche.ca/glossary#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid"}},"3":{"type":"LINK","mutability":"MUTABLE"
30-60 cm of recent snow is settling into a storm slab over a weak interface consisting of surface hoar, sun crusts or a combination. This is not typical of this region and will take longer than usual to heal. It is expected to persist at least through the week. The most problematic interfaces will be found on north-facing (shady) aspects in open areas around treeline sheltered from the wind with a clear sky view. A local ski area forecaster shared this advice on Sunday.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":133,"length":129,"style":"BOLD"}],"entityRanges":[{"offset":90,"length":12,"key":0},{"offset":104,"length":10,"key":1},{"offset":452,"length":11,"key":2}],"data":{}},{"key":"90g8k","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4lg6i","text":"Storm slabs will be deepest where strong winds have loaded lee terrain features in alpine and exposed treeline areas. Recent wind has varied in direction from south to northwest, so expect to see wind loading on a variety of lee aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid"}},"2":{"type":"LINK","mutability":"MUTABLE"
20-40 cm of settling snow sits over old surfaces consisting of surface facets, isolated patched of surface hoar in sheltered areas or sun crusts on solar aspects. Where wind has aided slab development, natural, human triggered and even remotely triggered avalanches have been observed on this layer. Slabs will be deepest where wind has loaded lee terrain features in alpine and exposed treeline areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":71,"length":6,"key":0},{"offset":99,"length":12,"key":1},{"offset":134,"length":10,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#faceted-snow","target":"_self","url":"https://www.avalanche.ca/glossary#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
In most of the region the problem is limited to high elevation wind slabs as only a few cm of new snow fell Sunday.
Snowfall continues to load a widespread layer of surface hoar found at all elevations. On solar aspects the surface hoar is sitting on a crust, which is a particularly nasty combination. There is currently 20 to 40 cm of snow that overlies it and another 5 to 15 cm of snow is forecast until Wednesday afternoon. This problem will become reactive once enough snowfall has accumulated and slab properties form. There is uncertainty on when exactly this will occur, so you should travel conservatively and assess this layer before committing to avalanche terrain. Also be aware that snowfall is occurring with strong southwest wind, which will load lee terrain features near ridges quickly.
Continued snowfall and wind adds to an already serious avalanche problem.  By Thursday morning up to 50 cm of new snow and 60 cm of older snow (for a total of over 100 cm) may be resting on well-preserved surface hoar at and below treeline. This kind of setup could open the door to a situation where it \"goes electric\" as deep avalanches run naturally in sheltered terrain at and below treeline.  Even deeper slabs are expected in the alpine as strong southwest wind continues to build thick wind fuelled storm slabs. Solar aspects (those that face south and west) have a buried crust that could serve as a bed surface for very large avalanches.
On Saturday, soft slabs may be found in alpine terrain and expose treeline, but loose snow will be found elsewhere, particularly at sheltered treeline. Although Saturday will be cold, southern aspects will see the brunt of the sun, potentially triggering small releases or cornices.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"10mbs","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4nku7","text":"On Sunday and Monday, the recent 30 to 50 cm of snow will get blown around by strong southwest wind, rapidly forming new wind slabs. Natural avalanche activity may occur during periods of rapid snow loading and human reactivity is expected to remain elevated for the coming days.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ad27j","text":"
A widespread layer of surface hoar found at all elevations and on all aspects is starting to become reactive to human traffic. The layer is buried around 30 to 40 cm deep. On south aspects, the surface hoar may be found overlying a melt-freeze crust, which is a particularly nasty combination. To date, the layer has been most reactive between around 1700 and 2300 m and where the overlying snow has gained slab properties from snow load and wind affect. This elevation band of reactivity may increase in the coming days as new snow, strong wind, and warming air temperature may increase slab properties.
The widespread wind slabs are now hidden under 10cm of fresh low density snow. These are primarily a concern in steep, convex and unsupported terrain. Thin areas may also be trigger points. Expect to find fresh wind slabs on E through S aspects.
Storm slabs are expected to remain sensitive to human triggering, as warming temperatures and periods of sun promote rapid settlement of the slab over a weak interface. Storm slabs will be deepest and most reactive where wind has loaded lee terrain features in alpine and exposed treeline areas. Recent winds have varied in direction from south to northwest, wind loading a variety of aspects.
20-40 cm cm of snow is settling over a layer of surface hoar on sheltered slopes near and above treeline. Recent warm temperatures have promoted cohesion in the slab above, priming this layer for human triggering. This persistent slab problem is most suspect on north-facing aspects between 1900-2300 m.
50 to 100 cm of snow from the past week combined with strong southwest wind has left thick reactive slabs. This snow may be resting on well-preserved surface hoar at and below treeline. South and west facing slopes may also have a buried crust that could serve as a bed surface for large avalanches. Overall there is serious potential to trigger large slab avalanches in the wake of the storm.
Recent storm snow adds another 10-25cm of snow load on top of a widespread layer of surface hoar found at all elevations and on all aspects.  This layer has already been reactive to human traffic and avalanches will likely increase in size as slab properties increase. The layer is buried around 40 to 65 cm deep. On south aspects, the surface hoar may be found overlying a melt-freeze crust, which is a particularly nasty combination.  However, recent skier triggered activity has been higher on northwest to easterly aspects.
5-15 cm of new snow accompanied by strong southwest winds may form reactive wind slabs on leeward terrain features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
A widespread layer of surface hoar found at all elevations and on all aspects has been reactive to human traffic. The layer is buried around 30 to 40 cm deep. On south aspects, the surface hoar may be found overlying a melt-freeze crust, which is a particularly nasty combination. To date, the layer has been most reactive between around 1700 and 2300 m and where the overlying snow has gained slab properties from snow load and wind affect. This elevation band of reactivity may increase in the coming days as new snow, strong wind, and a warming trend may increase slab properties.
Around 30 to 50 cm of snow is sitting on top of a widespread layer of surface hoar found at all elevations and on all aspects, and more snow will slowly accumulate in the coming days. On sun-exposed aspects, the surface hoar is sitting on a melt-freeze crust, which is a particularly nasty combination. To date, the layer has been most reactive between around 1700 and 2300 m and where the overlying snow has gained slab properties from snow load and wind affect. This elevation band of reactivity may increase in the coming days as new snow, strong wind, and warming air temperature may increase slab properties.
New snow and wind will form dangerous storm and wind slab avalanches on Thursday. Natural wind slab avalanches will be likely in alpine terrain and dangerous storm slabs could form at all aspects and elevations in parts of the region that receive more than 20 cm of new snow. Natural avalanche activity should reduce on Friday and Saturday, but storm and wind slabs will remain reactive to human triggers.
A rather volatile layer of buried surface hoar is 60 to 130 cm below the surface. This layer continues to produce very large natural and human triggered avalanches.  Large cornices that loom over many slopes are on the brink of failure. Failing cornices are likley to produce large avalanches when they impact slopes.
There are a couple of generations of wind slabs in the upper 30cm of the upper snowpack, mostly in the alpine Also expect to find some slabs on E trough S aspects from the NW flow earlier in the week.
15-25 cm of new snow accompanied by strong southwest winds is likely to form fresh wind slabs on leeward terrain features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
60 to 130 cm of snow from the past week combined with strong southwest wind has left thick reactive slabs. This snow may be resting on well-preserved surface hoar at and below treeline. South and west facing slopes may also have a buried crust that could serve as a bed surface for large avalanches. Overall there is serious potential to trigger large slab avalanches in the wake of the storm.
30 to 50 cm of storm snow rests on a widespread layer of buried surface hoar. These slabs have been most sensitive to triggering at lower elevations (at and below treeline) which is a setup that can catch us off guard. Wind fueled storm slabs can be found in the alpine and may be most sensitive on solar aspects where they rest on a sun crust.
We're looking at a warm night Friday, so there may still be a chance of wind slabs in extreme terrain, but once temperatures cool wind slabs probably won't be much of a problem.
Light snowfall and strong winds are building fresh wind slabs in the alpine and open areas at treeline. If triggered, windslabs have the potential to trigger deeper weak layers.
Southwest winds have drifted the previous 15-40 cm of snow into cohesive slabs onto lee terrain features at upper elevations. These wind slabs overly a variety of interfaces including surface hoar in sheltered areas and a melt freeze crust on steep, sunny slopes. Warming temperatures, 5-10 cm of new snow, and increasing southwest winds on Friday are expected to exacerbate this wind slab problem, especially where it overlies a weaker interface.
The recent warm to cold temperature trend has made these less likley to trigger, but carefull with wind slabs at the highest elevations, especially in extreme terrain.
round 10 to 30 cm of recent snow has been blown around by recent wind. This snow may be sitting on a layer of surface hoar found at all elevations and on all aspects. The recent snow has been touchiest where wind affected. Once enough snow accumulates and forms slab properties, this problem may become widespread. The western half of the region may be reaching a threshold amount of snow to be able to trigger the surface hoar and a warming trend could help build slab properties across the region.
Snowfall continues to load a widespread layer of surface hoar, with about 30 to 50 cm overlying it now. This layer has been most problematic in the south of the region. So far, the layer has been most reactive at treeline and alpine elevations, where the recent snow has been redistributed by the wind and formed a slab above the surface hoar.
Wind slabs may be forming as a series of storms hit White Pass. Natural avalanches may occur in alpine terrain during intense periods of the storm. There looks to be a break in the storm on Saturday, but human-triggered wind slab avalanches will remain likely as the slabs build.
Once it gets cold again these wind slabs are expected to be neutralized, but warmer temperatures Friday night into Saturday may allow for some human triggerable wind slab avalanches yet, especially in extreme terrain.
Cornices have grown large and loom over many ridge lines. These have the potential to fail naturally with the natural rise and fall of temperatures throughout the day, they could also fail if we get too close to them.  Give these things a wide berth. Wind slabs are not expected to be much of a problem right now, but be aware of the potential for wind slabs in the highest elevation terrain.
ew snow with be easily transported by moderate to strong winds overnight building fresh windslabs where precipitation reaches 10cm.  These windslabs will lie on buried windslabs, meltfreeze crusts or buried surface hoar.   Fresh snow will be touchiest where wind affected.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6p9p6","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eh15r","text":"A widespread persistent surface hoar layer may become reactive once enough snow accumulates and forms slab properties.  The western half of the region may be reaching a threshold amount of snow to be able to trigger the surface hoar and Friday's warming trend could help build slab properties across the region.
30 to as 50 cm of storm snow rests on a widespread layer of buried surface hoar. These slabs have been most sensitive to triggering at lower elevations (at and below treeline) which is a setup that can catch us off guard. Wind fueled storm slabs can be found in the alpine and may be most sensitive on solar aspects where they rest on a sun crust.
ight overnight snowfall and strong winds are building fresh wind slabs in the alpine and open areas at treeline. Wind slabs will be deepest and most reactive in the north of the region, where up to 20 cm of new snow fell overnight. If triggered, windslabs have the potential to trigger deeper weak layers.
A widespread layer of surface hoar found at all elevations and on all aspects has been reactive to human traffic. The layer is buried around 35 to 50 cm deep. On south aspects, the surface hoar may be found overlying a melt-freeze crust, which is a particularly nasty combination.  However, recent reported reactivity has been on northwest to easterly aspects.  To date, the layer has been most reactive between around 1700 and 2300 m and where the overlying snow has gained slab properties from snow load and wind affect. This elevation band of reactivity may increase on Saturday and Sunday with forecast new snow, strong wind, and recent warming trend, which all may increase slab properties.
Additional new snow continues to load a widespread layer of surface hoar, with about 30 to 50 cm overlying it now. This layer has been most problematic in the south of the region. So far, the layer has been most reactive at treeline and alpine elevations, where the recent snow has been redistributed by the wind and formed a slab above the surface hoar.
35 to 50 cm of snow overlies a widespread layer of surface hoar found at all elevations and on all aspects.  Recent warm temperatures have settled this snow into a more cohesive slab in mid and low elevations, making it more likely to produce large avalanches.  To date, the layer has been most reactive between around 1700 and 2300 m and where the overlying snow has gained slab properties from snow load, settlement and wind affect. This elevation band of reactivity may increase in the coming days as new snow and strong wind continue to increase slab properties.
Tomorrow will surely see another wind slab form in open areas. Keep in mind this slab may sit on a crust or a dense layer from today's warmth. This bond may be suspect at first.
New snow with strong winds changed in direction (southwest to northwest), which may form a complex pattern of reactive wind slabs on leeward terrain features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
Light snowfall and strong winds are building fresh wind slabs in the alpine and open areas at treeline. If triggered, windslabs have the potential to trigger deeper weak layers.
Strong westerly wind will continue wind slab formation in lee terrain features at higher elevations, particularly near ridges. Wind slabs could step down to buried weak layers and form larger avalanches.
Wind slab formation will continue Tuesday night, with another storm passing by. Around 5 to 15 cm of snow and strong southwest wind will rapidly form slabs in lee terrain features, particularly near ridges.
20-30 cm of recent snow with strong winds changing in direction (from south to west to northwest) has formed a complex pattern of reactive wind slabs on leeward terrain features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
resh snow will be touchiest where wind affected.  New snow with be easily transported by moderate to strong winds overnight building fresh windslabs.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7df37","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"635eg","text":"These windslabs will overlay a variety of surfaces including buried windslabs, meltfreeze crusts, or buried surface hoar.
Strong south wind will continue to form thick wind slabs in the alpine and open treeline terrain this week. These slabs will be reactive to human triggering, especially on freshly loaded slopes. Also be aware of large cornices that could trigger slabs on the slopes below.
Variable snowfall amounts will accumulate across the region on Tuesday night, with amounts from 15 to 30 cm expected. Both storm and wind slabs will rapidly develop during periods of intense snowfall and strong west wind. Use added caution if you find more than 25 cm of snow accumulate from the storm. Sunny periods on Wednesday could rapidly destabilize the snow on sun-exposed slopes.
Light snowfall and strong winds are building fresh wind slabs in the alpine and open areas at treeline. If triggered, windslabs have the potential to trigger deeper weak layers.
30 to 50 cm of settled snow rests on a widespread layer of buried surface hoar. While this weak layer is thought to be present at all elevations, these slabs have been most sensitive to triggering at treeline which is a setup that can catch us off guard. Watch for deeper slabs at ridgecrest too.
Light snowfall and strong winds are building fresh wind slabs in the alpine and open areas at treeline. If triggered, windslabs have the potential to trigger deeper weak layers.
Incremental snowfall and strong southwest winds are expected to continue to build reactive wind slabs on lee features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
A weak layer of surface hoar sits 40-70 cm deep. Read more about surface hoar on our forecaster blog! Human triggering of this layer is very likely, and has been observed extensively through the region over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are from all aspects and elevations, but especially concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":85,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.c
Widespread storm slabs will be a serious problem on Wednesday with 20 to 60 cm of snow falling in the last 24 hours with strong to extreme wind from the west. Natural activity is possible on freshly wind loaded slopes and human triggering remains a concern in steep terrain at all elevations. The fresh storm slabs combined with several persistent slabs makes the consequence of triggering any avalanche high.
Around 20 to 30 cm of snow is forecast to accumulate across the region on Thursday. Storm slabs will grow over the day and become touchy during periods of rapid loading from snowfall and/or strong wind. The snow will fall with strong southwest wind, so the deepest deposits will be in lee terrain features. Use added caution if you find more than 20 cm of snow accumulate from the storm.
Additional new snow continues to load a widespread layer of surface hoar, with about 30 to 70 cm overlying it now.  This layer appears to be reaching \"threshold\" where human triggering is likely.  Watch for signs of instability such as shooting cracks and whumphing.   So far, the layer has been most reactive at treeline and alpine elevations, where the recent snow has been redistributed by the wind and formed a slab above the surface hoar.
Cornices have grown large and loom over many ridge lines. These have the potential to fail naturally with the natural rise and fall of temperatures throughout the day, they could also fail if we get too close to them.  Give these things a wide berth. Wind slabs are not expected to be much of a problem right now, but be aware of the potential for wind slabs in the highest elevation terrain.
Incremental snowfall and strong winds are building deep wind slabs in the alpine and open areas at treeline. If triggered, windslabs have the potential to trigger deeper weak layers.
ncremental snowfall and strong winds are building fresh wind slabs in the alpine and open areas at treeline. Wind slabs will be deepest and most reactive in the north and west of the region. If triggered, windslabs have the potential to trigger deeper weak layers.
30 to 50 cm of total recent storm snow and strong west winds have formed wind slabs in many areas. Wind slabs will be most reactive in lee terrain features.
Large dangerous storm slabs will form on Thursday with another 20-40 cm of snow and strong to extreme wind in the forecast. Fresh storm slabs combined with several persistent slabs makes the consequence of triggering any avalanche high.
Watch for thin wind slabs forming in the immediate lee of ridges. Also be aware of the potential for cornice failures, large cornices overhang many ridge lines.
Cornices have grown large and loom over many ridge lines. These have the potential to fail naturally with the natural rise and fall of temperatures throughout the day, they could also fail if we get too close to them.  Give these things a wide berth. Wind slabs are not expected to be much of a problem right now, but be aware of the potential for wind slabs in the highest elevation terrain.
Watch for thin wind slabs immediately lee of ridge crest, especially in more extreme terrain.  Also be aware of the potential for cornice failure, large cornices overhang many ridge lines at this time
35 to 60 cm of snow overlies a widespread layer of surface hoar found at all elevations and on all aspects.  Recent warm temperatures and locally heavy storm snow amounts have settled this snow into a more cohesive slab in mid and low elevations, making it more likely to produce large avalanches.  To date, the layer has been most reactive between around 1500 and 2300 m and in the Northern portions of the forecast region.  However, southern regions may rapidly be gaining slab characteristics where triggering the surface hoar layer also likely.
The recent snow and strong winds are building windslabs in alpine terrain and isolated areas at treeline.  Forecasters were observing cracking while travelling along ridgelines on Saturday.
5-10 cm of new snow with moderate ridge-top winds from the southwest are building a reactive wind slab problem on immediate lee terrain features at upper elevations that may be prone to human triggering.
Incremental snowfall and strong southwest winds are expected to continue to build reactive wind slabs on lee features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
Incremental snowfall with strong southwest winds are building a reactive wind slab problem on immediate lee terrain features at upper elevations that may be prone to human triggering. Small wind slabs have the potential to step down to more deeply buried weak layers, creating larger avalanches.
20-30 cm of recent snow with winds changing in direction (from south to west to north) has formed wind slabs on leeward terrain features at upper elevations that may remain possible to human trigger. These areas of concern overlap with where cornices may also be reaching their breaking point.
A weak layer of surface hoar sits 30-60 cm deep. The overlying snow has been cohered into slabs by incremental loading through successive storms, wind at upper elevations and mild temperatures at lower elevations. As slab character increases, so do reactivity and size of avalanches failing on the weak layer (surface hoar). Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":361,"length":15,"key":0}],"data":{}},{"key":"7k12q","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"25fqa","text":"Human triggering of these persistent slabs is very likely, and has been observed extensively through the region over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are from all aspects and elevations, but especially concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"typ
Wind slabs will form as new snow falls with strong southwest wind. Apply added caution in exposed terrain, particularly in lee slopes near ridges.
Incremental snowfall with strong southwest winds are building a reactive wind slab problem on immediate lee terrain features at upper elevations that may be prone to human triggering. Easier-to-trigger wind slabs have the potential to step down to more deeply buried weak layers, creating larger avalanches.
Variable snowfall amounts will accumulate across the region on Tuesday night, with amounts from 10 to 25 cm expected, and the most likely around Coquihalla. Both storm and wind slabs will rapidly develop during periods of intense snowfall and strong west wind. Use added caution if you find more than 25 cm of snow accumulate from the storm. Sunny periods on Wednesday could rapidly destabilize the snow on sun-exposed slopes.
A weak layer of surface hoar sits 40-70 cm deep. The overlying snow has been cohered into slabs by incremental loading through successive storms, wind at upper elevations and mild temperatures at lower elevations. As slab character increases, so do reactivity and size of avalanches failing on the weak layer (surface hoar). Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":361,"length":15,"key":0}],"data":{}},{"key":"9ffq2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6aqv","text":"Skier triggering of these persistent slabs is very likely, and has been observed extensively through the region over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are from all aspects and elevations, but especially concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"typ
resh snow will be touchiest where wind affected.  New snow with be easily transported by moderate to strong winds overnight building fresh windslabs.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7df37","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"635eg","text":"These windslabs will overlay a variety of surfaces including buried windslabs, meltfreeze crusts, or buried surface hoar.
For everywhere except the north of the region, around 20 to 30 cm of new snow Friday night to Saturday afternoon will accumulate, with associated south switching to northeast wind. Storm and wind slabs will form quickly and on all aspects, as the wind will shift from south to northeast. Local snowfall amounts could be even higher, particularly on the eastern slopes where local snowfall enhancements could occur. Natural avalanche activity will be likely to occur during and shortly after the storm. These slabs will likely remain reactive to human traffic on Sunday and Monday.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b2e05","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8nocd","text":"For the northern part of the region (e.g., Pine Pass), only 5 to 10 cm of snow is forecast to accumulate. However, wind will be elevated and shifting directions, so wind slabs may be found on all aspects in wind-affected terrain and they may remain touchy.
ecent winds may have formed reactive slabs on lee features below ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
A weak layer of surface hoar sits 40-70 cm deep. The overlying snow has been cohered into slabs by incremental loading through successive storms, wind at upper elevations and mild temperatures at lower elevations. As slab character increases, so do reactivity and size of avalanches failing on the weak layer (surface hoar). Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":361,"length":15,"key":0}],"data":{}},{"key":"9ffq2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6aqv","text":"Skier triggering of these persistent slabs is very likely, and has be observed extensively through the region over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are from all aspects and elevations, but especially concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"typ
The recent snow and strong winds are building windslabs in alpine terrain and treeline areas.  Forecasters were observing cracking while travelling along ridgelines on Saturday and with the more snow on sunday, we expect these slabs to continue to get more reactive.
Around 20 to 30 cm of snow is forecast to accumulate across the region on Thursday. Storm slabs will grow over the day and become touchy during periods of rapid loading from snowfall and/or strong wind. The snow will fall with strong southwest wind, so the deepest deposits will be in lee terrain features. Use added caution if you find more than 20 cm of snow accumulate from the storm.
Storm snow will continue to accumulate with 10-20 cm  expected Monday night and another 10-25 cm during the day on Tuesday, all accompanied by strong to extreme wind out of the west. Storm snow is coming to rest on yet another layer of surface hoar which is expected to allow for the formation of touchy slabs at all elevations.
Recent snow has been blown around by strong to extreme wind from the west over the past few days. Watch for wind slabs in the immediate lee of ridges. Warm sunny weather on Thursday could weaken these slabs and make them more reactive.
A weak layer of surface hoar sits 40-70 cm deep. The overlying snow has been cohered into slabs by incremental loading through successive storms, wind at upper elevations and mild temperatures at lower elevations. As slab character increases, so do reactivity and size of avalanches failing on the weak layer (surface hoar). Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":361,"length":15,"key":0}],"data":{}},{"key":"8668b","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2q20a","text":"Skier triggering of these persistent slabs is likely, and has be observed over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8mguu","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1c1kv","text":"This problem has been observed mostly in the south of the region. There is uncertainty around the distribution of the surface hoar problem in the north.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"typ
20-30 cm of recent snow and strong westerly winds have formed wind slabs on leeward terrain features at upper elevations that may remain possible to human trigger. These areas of concern overlap with where cornices may also be reaching their breaking point.
A weak layer of surface hoar sits 30-60 cm deep. The overlying snow has been cohered into slabs by incremental loading through successive storms, wind at upper elevations and mild temperatures at lower elevations. As slab character increases, so do reactivity and size of avalanches failing on the weak layer (surface hoar). Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":361,"length":15,"key":0}],"data":{}},{"key":"7k12q","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"25fqa","text":"Skier triggering of these persistent slabs is very likely, and has be observed extensively through the region over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are from all aspects and elevations, but especially concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"typ
Watch for thin wind slabs immediately lee of ridge crest, especially in more extreme terrain.  Also be aware of the potential for cornice failure, large cornices overhang many ridge lines at this time
ight snowfall and strong winds are building fresh wind slabs in the alpine and open areas at treeline. If triggered, windslabs have the potential to trigger deeper weak layers.
ind slabs are everywhere in the Alpine and in lee and cross-loaded terrain at Treeline. Human triggering is very likely.
New snow and strong west winds are expected to continue to build reactive wind slabs on lee features at upper elevations. These areas of concern overlap with where cornices may also be reaching their breaking point.
10 cm fell during the day Sunday and another 5 to 15 cm are expected Sunday night followed by another 5 to 15 cm during the day Monday, all accompanied by strong wind out of the southwest, west and northwest. Storm snow is coming to rest on yet another layer of surface hoar which is expected to allow for the formation of touchy new slabs at all elevations.
30 to 50 cm of settled snow rests on a widespread layer of buried surface hoar. While this weak layer is thought to be present at all elevations, these slabs have been most sensitive to triggering at treeline which is a setup that can catch us off guard. Watch for deeper slabs at ridge crest too.
Wet loose possible on south slopes...","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"arh9t","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6qtf","text":"Watch for thin wind slabs forming in the immediate lee of ridges.
Several storms crossing the region this week will form new storm and wind slabs. Natural avalanche activity will likely occur during and shortly after each storm, especially on wind affected slopes at higher elevations. Human triggered slabs will remain likely in the lulls between the storms.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"21vn8","text":"The greatest accumulations are expected around Torpy, Kakwa, and Renshaw. Northern and eastern parts of the region may receive less snow and the problem will be more isolated to wind affected terrain at higher elevations.
Another storm impacts the region on Thursday, with snowfall amounts of 15 to 25 cm expected in the north and around 10 cm in the south. Slabs will build throughout the day with periods of rapid snowfall and strong southwest wind. Use added caution if you find more than 20 cm of snow accumulate from the storm or during periods of rapid loading from snow and/or wind.
Incremental snowfall and strong winds have formed large, reactive wind slabs in the alpine and open areas at treeline. If triggered, wind slabs have the potential to trigger deeper weak layers. This problem also overlaps with where cornices may be reaching their breaking point.
ncremental snowfall and strong winds are building fresh wind slabs in the alpine and open areas at treeline. Wind slabs will be deepest and most reactive in the north and west of the region. If triggered, windslabs have the potential to trigger deeper weak layers.
Around 30 to 50 cm of snow overlies a weak layer of surface hoar. The layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but the layer may exist on all aspects and at all elevations. The likelihood of triggering this layer on Thursday may increase due to a spike in the freezing level along with sunny skies. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Wind is the name of the game right now.  It's strong from the south Wednesday, but it's expected to shift to the east/northeast Thursday.  5 to 10 cm of snow over the next 24 hours should allow for the continued formation of fresh wind slabs which are expected to be sensitive to human triggering Thursday and Friday.  Time to seek out the most wind sheltered spots you can think of. Give cornices plenty of space too, they are expected to be fragile.
Recent winds may have formed reactive slabs on lee features below ridgetops.
20-30 cm of new snow has formed storm slabs that may not be bonding well with the previous snow surface.
A weak layer of surface hoar is buried 40-80 cm deep, and human-triggering is likely. Over the past several days, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
Large dangerous storm slabs have formed. As snowfall tapers off Thursday night natural avalanche activity is expected to decrease, but human triggered avalanches are very likely. Fresh storm slabs combined with several persistent slabs makes the consequence of triggering any avalanche high.
ew winds and windslabs are building
Recent snow has been blown around by strong to extreme wind from the west over the past few days. Watch for wind slabs in the immediate lee of ridges.
Cornices have grown large and loom over many ridge lines. They have potential to fail naturally during the heat of the day and could also fail if we get too close to them. Give them a wide berth.
A weak layer of surface hoar is buried 40-80 cm deep, and human-triggering is likely. Over the past several days, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
A weak layer of surface hoar sits 35-70 cm deep, and human-triggering is likely. Over the past several days, large human, machine, and remotely-triggered avalanches have released on this layer. Avalanche activity is expected to become more likely and widespread, as more areas approach critical loading with the incoming snow.
Large, dangerous wind slabs have formed as a result of recent snowfall and strong winds. Natural avalanche activity is expected to decrease, but human triggered avalanches remain likely. Newly formed wind slabs combined with deeply buried persistent weak layers makes the consequence of triggering any avalanche high.
A weak layer of surface hoar is buried 40-80 cm deep, and human-triggering is likely. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
A weak layer of surface hoar sits 40-70 cm deep. (Read more about surface hoar on our forecaster blog) Human triggering of this layer is likely, and has been observed extensively through the region over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are from all aspects and elevations, but especially concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":86,"length":15,"key":0}],"data":{}},{"key":"3k532","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"typ
Around 20 to 30 cm of recent snow has likely started to consolidate into a storm slab in sheltered terrain. In exposed terrain at higher elevations, the snow fell with strong south to west wind, forming wind slabs in lee terrain features. These slabs may remain touchy to human traffic on Friday. Sun-exposed slopes should be treated as suspect during periods of intense sun. Cornices have also likely grown large and could fail during sunny conditions or from the weight of a human.
Heavy snowfall and strong to extreme southwest winds are expected to create dangerous avalanche conditions on Tuesday.
Heavy snowfall is expected to drive the formation of new storm slabs throughout the day on Saturday. New snow is not expected to bond well with the current snow surface and wind will likely accelerate slab formation in open areas.
The recent storm delivered up to 25 cm in the north of the region and up to 50 cm in the south of the region with strong southerly winds. The new snow is not expected to bond well with previous surfaces. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"apfct","text":"Strong southerly winds have built hard wind slabs on lee features in the alpine and at wind exposed treeline locations. These wind slabs are likely reactive to human triggering.
Around 15 to 25 cm of snow fell across the region on Thursday with strong south to southwest wind. Wind slabs likely formed rapidly during the storm and they may remain touchy to human traffic on Friday. Sun-exposed slopes should be treated as suspect during periods of intense sun. Cornices have also likely grown large and could fail during sunny conditions or from the weight of a human.
Incremental snowfall and strong winds have formed large, reactive wind slabs in the alpine and open areas at treeline. If triggered, wind slabs have the potential to trigger deeper weak layers. This problem overlaps with where cornices may be reaching their breaking point.
Heavy snowfall is expected to drive the formation of new storm slabs throughout the day on Saturday. New snow is not expected to bond well with the current snow surface and wind will likely accelerate slab formation in open areas.
A weak layer of surface hoar is buried 40-80 cm deep, and human-triggering is likely. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
Around 30 to 50 cm of snow overlies a weak layer of surface hoar. The layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but the layer may exist on all aspects and at all elevations. Riders will be capable of triggering this layer for some time until there is a substantial change in the snowpack and/or weather. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Around 20 to 30 cm of recent snow is consolidating into a storm slab in sheltered terrain, which may not bond well to an underlying melt-freeze crust. In exposed terrain at higher elevations, the snow fell with strong southwest wind, forming wind slabs in lee terrain features. These slabs could still be triggered by riders this weekend. Cornices have also likely grown large and could fail from the weight of a human.
A weak layer of surface hoar is buried 50-90 cm deep,within the prime range for human triggering. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
Large, dangerous wind slabs have formed as a result of recent snowfall and strong winds. Newly formed wind slabs combined with deeply buried persistent weak layers makes the consequence of triggering any avalanche high.
A weak layer of surface hoar may be found 60-100 cm deep, within the prime range for human-triggering. Over the past week, large (size 2-3) natural and human-triggered avalanches have released on this layer. Observations are concentrated to north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
Fresh snow and wind will promote widespread storm slab development.
Around 25 to 35 cm of snow from Thursday is consolidating into a slab in sheltered terrain and may take a couple days to bond to previous surfaces. In exposed terrain at higher elevations, the snow fell with strong to extreme southeast to southwest wind, forming thick wind slabs in lee terrain features. These slabs may remain touchy to riders this weekend. Cornices have also likely grown large and could fail from the weight of a human.
Around 15 to 25 cm of snow fell across the region on Thursday with strong south to southwest wind. Wind slabs likely formed rapidly during the storm and they may remain touchy to human traffic this weekend. In sheltered terrain, the snow may be consolidating and forming storm slabs. Cornices have also likely grown large and could fail from the weight of a human.
The Thursday afternoon storm is expected to form new storm and wind slabs. Natural avalanche activity is possible Thursday night into early Friday morning. Human triggered slabs are likely Friday, especially on wind affected slopes at higher elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"21vn8","text":"
Cornices are large at this time of year and they will undergo rapid weakening when they warm up. Avoid travelling close to them while on ridges and limit your exposure on slopes beneath them.
Around 30 to 50 cm of snow overlies a weak layer of surface hoar. The layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but the layer may exist on all aspects and at all elevations. Riders will be capable of triggering this layer for some time until there is a substantial change in the snowpack. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
A weak layer of surface hoar sits 35-70 cm deep, within the prime range for human-triggering. Over the past several days, large human-triggered and remotely-triggered avalanches have released on this layer. Avalanche activity is expected to become more likely and widespread, as more areas approach critical loading from the recent snow.
ind slabs are everywhere in the Alpine and in lee and cross-loaded terrain at Treeline. Human triggering is very likely.
Around 30 to 60 cm of snow overlies a weak layer of surface hoar. The layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but the layer may exist on all aspects and at all elevations. Riders will be capable of triggering this layer for some time until there is a substantial change in the snowpack. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Around 20 to 30 cm of snow fell on Thursday, which may still be gaining strength. Storm slabs could be triggered in steep features, particularly where it overlies a melt-freeze crust. When the sun shows its face on Sunday, the storm snow on sun-exposed slopes could rapidly deteriorate. Thursday's snow fell with strong southwest wind, which formed wind slabs in lee terrain features. These slabs could still be triggered by riders, particularly immediately adjacent to ridges. Be aware that cornices have also likely grown large and could fail from the weight of a human.
A weak layer of surface hoar is buried 50-90 cm deep, within the prime range for human triggering. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
Around 25 to 35 cm of snow from Thursday has consolidated into a slab and may take a couple days to bond to previous surfaces. In exposed terrain at higher elevations, the snow fell with strong to extreme southeast to southwest wind, forming thick wind slabs in lee (northerly) terrain features. These slabs may remain touchy to riders this weekend. Use caution on steep sun-exposed slopes during periods of intense sun, as the storm snow may rapidly deteriorate. Also note that cornices are large and could fail from the weight of a human.
Wind slabs formed from Thursday's snow and strong south to southwest wind could still be triggered by riders. The most suspect terrain is immediately adjacent to ridges at treeline and alpine elevations. In sheltered terrain, the snow has likely consolidated into small storm slabs. During periods of sunny skies, the storm snow on sun-exposed slopes could rapidly deteriorate. Note that cornices are large, looming, and could fail during periods of intense sun or from the weight of a human.
20-30 cm of new snow is settling into storm slabs that are not expected to bond well with the previous snow surface. Wind has already been observed accelerating slab formation around ridgetop features. Snow may shed naturally as slabs or dry loose releases from slopes exposed to sunshine.
20-30 cm of new snow is settling into storm slabs that are not expected to bond well with the previous snow surface. Wind has already been observed accelerating slab formation around ridgetop features. Snow may shed naturally as slabs or dry loose releases from slopes exposed to sunshine.
ind slabs seem to be everywhere. They are most concerning for human triggering in steep, convex and unsupported terrain.
The recent storm delivered 15-30 cm of snow with strong westerly winds. The new snow is not expected to bond well with previous surfaces. Strong westerly winds built thick wind slabs on lee features in the alpine and at treeline and added a new load to cornices. Wind slabs might be reactive to human triggering.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ea512","text":"Approach sun exposed slopes and cornices with caution. The sun is strong at this time of year and might increase the likelihood for triggering slabs or cornice failure.
Strong winds have drifted recent snow into wind slabs that are possible to trigger, especially in areas where surface hoar sits at the interface. A significant warming event on Sunday is expected to rapidly destabilize slabs, initiate wet loose avalanches, and bring cornices to their breaking point. This activity is likely to be most prominent on steep slopes that receive direct day-time solar radiation (slopes that face south through west).
As the cold snow feels the sun for the first time this weekend it could make wind slabs just a bit more sensitive to human triggering. The sun will also allow cornices to heat up, further weakening them, potentially to the point of failure. Even when you're in the shade, overhead cornices may be receiving strong sun which can catch us off guard. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"21vn8","text":"
The recent storm delivered 20-40 cm of snow combined with strong southwest winds. The new snow is not expected to bond well with previous surfaces. Strong southwest winds built thick slabs on lee features in the alpine and at treeline and added a new load to cornices. Wind slabs will be reactive to human triggering. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9bo9q","text":"Approach sun exposed slopes and cornices with caution. The sun is strong at this time of year and might increase the likelihood for triggering slabs or cornice failure.
A weak layer of surface hoar may be found 50-100 cm deep, within the prime range for human-triggering. Over the past week, large (size 2-3) natural and human-triggered avalanches have released on this layer. Observations are concentrated to north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
A weak layer of surface hoar is buried 50-90 cm deep, within the prime range for human triggering. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
A weak layer of surface hoar is buried 50-90 cm deep,within the prime range for human triggering. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
A weak layer of surface hoar sits 35-70 cm deep, within the prime range for human-triggering. Over the past several days, large human-triggered and remotely-triggered avalanches have released on this layer. As more areas approach critical loading with settlement in the recent snow, human-triggered large avalanche remains likely.
20-30 cm of new snow has settled into storm slabs that are unlikely to be bonding well with the previous snow surface. Warming temperatures and clear skies Monday may allow the new snow to remain sensitive to human triggering. Beware of wet loose avalanches releasing naturally on steep slopes exposed to the sun too.
10-20 cm of snow is forecast with strong southwest winds. The new snow is not expected to bond well with previous surfaces, and storm slabs may become increasingly reactive to human triggering as snow accumulates. Slabs are likely to build sooner on lee features at upper elevations, where winds are transporting the snow into deeper, more cohesive drifts.
10-20 cm of snow is forecast with strong southwest winds. The new snow is not expected to bond well with previous surfaces, and storm slabs may become increasingly reactive to human triggering as snow accumulates. Slabs are likely to build sooner on lee features at upper elevations, where winds are transporting the snow into deeper, more cohesive drifts.
5-20 cm of snow by Wednesday morning combined with strong westerly wind is forming wind slabs in the alpine and open areas at treeline. This problem overlaps with where cornices may be reaching their breaking point. If triggered, wind slabs and cornices could step down to the buried surface hoar layer, forming large avalanches.
Up to 15 cm of new snow is expected to accumulate above an array of surface hoar and sun crust throughout the region by Wednesday morning, with possible enhanced accumulations in localized areas. Aside from forming a thin new storm slab problem, the new snow adds to the load overlying another active storm interface as well as that over a more deeply buried persistent weak layer.
Around 30 to 60 cm of snow overlies a weak layer of surface hoar. The layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but the layer may exist on all aspects and at all elevations. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Around 20 to 30 cm of snow fell last Thursday with strong southwest wind, which formed wind slabs in lee terrain features. Be aware that cornices have also likely grown large and could fail from the weight of a human.
25 to 35 cm of snow from Thursday fell with strong to extreme southeast to southwest wind, forming thick wind slabs in lee (northerly) terrain features. Also note that cornices are large and could fail from the weight of a human.
Wind slabs formed from Thursday's snow and strong south to southwest wind could still be triggered by riders. The most suspect terrain is immediately adjacent to ridges at treeline and alpine elevations. Note that cornices are large, looming, and could fail during periods of intense sun or from the weight of a human.
Large, dangerous wind slabs have formed as a result of recent snowfall and strong winds. Newly formed wind slabs combined with deeply buried persistent weak layers makes the consequence of triggering any avalanche high.
20 to 35 cm of new snow has settled into storm slabs that have been running fast and far.  Warming temperatures and clear skies Monday should allow the new snow to remain sensitive to human triggering.
25-45 cm of storm snow combined with strong westerly winds is expected by Wednesday morning. The new snow is not expected to bond well with previous surfaces. Strong westerly winds will build thick slabs on lee features at upper elevations. These wind slabs will be reactive to human triggering.
he storm on Tuesday delivered up to 10 cm in the south and east of the region and up to 30 cm in the north and west of the region building storm slabs. Strong westerly wind formed wind slabs in the alpine and open areas at treeline. This problem overlaps with where cornices may be reaching their breaking point. If triggered, wind slabs and cornices could step down to the buried surface hoar layer, forming large avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"drso0","text":"Approach sun exposed slopes and cornices with caution. The sun is strong at this time of year and might increase the likelihood for triggering slabs or cornice failure.
A weak layer of surface hoar sits 35-70 cm deep, within the prime range for human-triggering. Over the past several days, large human-triggered avalanches have released on this layer. As more areas approach critical loading from additional snow and wind, human-triggering remains likely.
Rapid loading of new snow over the day on Tuesday is expected to form a new storm slab problem that becomes increasingly reactive during the day. New snow is unlikely to bond well with the current snow surface over the near term.
An extreme wind event has changed the look of the mountains. Wind was strong out of the northeast, north, northwest, west and southwest Thursday into early Friday. Stout wind slabs have formed on all aspects. Sunny breaks may entice us to explore, but don’t underestimate how hard some slabs could be. Triggering would be most likely around rocky outcroppings, or anywhere the snowpack goes from thick to thin. While more difficult to trigger, if one of these hard wind slabs is triggered, it could produce a very large & destructive avalanche.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3b10j","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2c39c","text":"Weakened cornices overhang many ridge lines, give them a wide berth as you travel.
Light new snow amounts and elevated southwest winds may layer thin but touchy slabs over leeward (north to east) terrain, where recent wind slabs already exist. The most suspect terrain is immediately adjacent to ridges at treeline and alpine elevations. Note that cornices are large, looming, and could fail under the weight of a person or machine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d9t5u","text":".
Touchy new storm slabs are expected to form over the day as new snow accumulates and consolidates with settlement and wind redistribution. This problem will be greatest in areas closest to the coast, in wind-exposed areas, and toward the end of the day. Large storm slab releases may have enough force to trigger a deeply buried surface hoar layer to create a very large avalanche.
10-20 cm of snow is forecast with strong southwest winds. The new snow is not expected to bond well with previous surfaces, and storm slabs may become increasingly reactive to human triggering as snow accumulates. Slabs are likely to build sooner on lee features at upper elevations, where winds are transporting the snow into deeper, more cohesive drifts.
Another 10 cm of snow is forecast by Wednesday morning resulting in storm snow totals of 20-40 cm. The new snow is not expected to bond well with previous surfaces. Strong to extreme westerly winds will build thick slabs on lee features at upper elevations. These wind slabs will be reactive to human triggering.
Light new snow amounts and elevated southwest winds are expected to layer touchy new wind slabs over leeward (north to east) terrain in exposed areas on Tuesday. This problem will increase over the day, with wind redistribution peaking in the afternoon.
New snow from Sunday night and Monday combined with moderate southerly winds has promoted new wind slab formation in the lee of terrain features. This new snow is obscuring wind slabs that formed on all aspects and elevations during a wind event late last week.
25-40 cm of storm snow combined with strong westerly winds is expected by Wednesday morning. The new snow is not expected to bond well with previous surfaces. Strong westerly winds will build thick slabs on lee features at upper elevations. These wind slabs will be reactive to human triggering.
Light new snow amounts and elevated southwest winds have likely formed thin but touchy slabs over leeward (north to east) terrain, where recent wind slabs already exist. The most suspect terrain is immediately adjacent to ridges at treeline and alpine elevations. Note that cornices are large, looming, and could fail under the weight of a person or machine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d9t5u","text":".
25-35 cm of new snow is expected to accumulate by the end of the storm Wednesday morning. This snow will be settling into storm slabs on an array of surfaces that are unlikely to form a solid bond over the short term. Expect the problem to be most pronounced at high elevations and in wind loaded areas.
Light new snow amounts and strong to extreme winds have been forming new wind slabs in leeward terrain. Fresh slabs are likely to be sensitive to human triggering on Wednesday and may be found well below ridgetops and into exposed lower elevations.
30 to 50 cm of total recent storm snow and strong west winds have formed wind slabs in many areas. Wind slabs will be most reactive in lee terrain features.
25-40 cm of recent storm snow and strong west winds have formed wind slabs in many areas. These slabs will be the most reactive in wind loaded areas.
Fresh snow and wind has formed storm slabs in many areas, especially at higher elevations. These slabs may be more reactive to human triggers in wind loaded areas, and in the trees, where they likely rest on a buried surface hoar layer.
Widespread storm slabs formed during the storm on Monday/Tuesday. These slabs are sitting on a weak layer of surface hoar in many areas and may still be easily triggered by humans.
Around 15 cm of new snow accumulated above an array of surface hoar and sun crust throughout the region during Tuesday's storm, with heightened natural and skier triggered avalanche activity observed as a result. Aside from forming a widespread new new storm slab problem and wind slabs in exposed areas, the new snow adds to the load overlying another active storm interface as well as that over a more deeply buried persistent weak layer.
Higher elevations in the region hold up to 30 cm of new snow that may remain reactive to human triggering over the short term. Expect the problem to be most pronounced in wind loaded leeward areas in upper treeline and alpine.
Tuesday's storm brought 10-30 cm of new snow and strong to extreme winds. Expect to find new wind slabs perched in steep leeward features throughout the region, with the greatest depths and associated avalanche danger found in southern areas and high elevations. Keep your guard up in steep, sheltered lower elevations with more than 15 cm of new snow - it may overlie a touchy layer of surface hoar.
15-35 arrived Tuesday and Tuesday night along with moderate to strong west and southwest winds. Expect wind slabs to develop in the lee of terrain features. In the Pine Pass and Mackenzie areas, storm and wind slabs are possibly adding additional load to a weak layer of surface hoar buried 50-80 cm that may be found at the treeline elevation band.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"21vn8","text":"
Light new snow amounts and elevated southwest winds have formed reactive new wind slabs over leeward (north to east) terrain. The most suspect terrain is immediately adjacent to ridges at treeline and alpine elevations. Note that cornices are large, looming, and could fail under the weight of a person or machine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d9t5u","text":".
Moderate to strong northeast wind will continue to form fresh wind slabs at all elevations. The wind shifted recently and is transporting snow onto previously windward slopes. Wind slabs will be reactive to human triggering.
Strong easterly winds have drifted the 10-20 cm of new snow into wind slabs on lee terrain features in a reverse loading pattern. These wind slabs may remain possible to human trigger. Cornices may also be reaching their breaking point.
riday will bring another 5-15 cm of snow with moderate east winds. Strong westerly wind formed previous wind slabs in the alpine and open areas at treeline. A shift in wind direction to east will form fresh wind slab on previous windward slopes at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4a1op","text":"Between 20-50 cm of recent storm snow sit on a variety of old surfaces which consists of old wind slabs, a weak surface hoar layer and sun crusts on steep solar aspects. Both, storm and wind slabs, are reactive to human triggers. If triggered, slabs could step down to the buried surface hoar layer from February 22, forming large avalanches.
Moderate northeast wind will continue to form fresh wind slabs on previously windward slopes at all elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9e6ap","text":"The recent storm snow may sit on a weak layer of surface hoar at treeline and below and a sun crust on steep solar aspects. It is still possible to trigger slab avalanches on this layer.
Widespread storm slabs formed during the storm on Monday/Tuesday. These slabs are sitting on a weak layer of surface hoar in many areas and may still be easily triggered by humans. The surface hoar is most prominent at treeline and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":109,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"M
Strong easterly winds have drifted the new 10-20 cm of snow into wind slabs on lee terrain features. This wind direction is atypical, so you may find wind slabs in terrain features that don't typically have them.
10-20 cm of fresh snow and wind has formed storm slabs in many areas, especially at higher elevations. These slabs may be more reactive to human triggers in wind loaded areas, and in the trees, where they likely rest on a buried surface hoar layer.
Yet another generation of wind slabs has been recently formed. These are everywhere in the Alpine and extend down into Treeline.
Yet another generation of wind slabs has been recently formed. These are everywhere in the Alpine and extend down into Treeline.
nother 5-15 cm of snow with highest snowfall amounts in the east of the region is forecast by Saturday morning. Moderate east winds will continue to form fresh wind slabs on previously windward slopes at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4a1op","text":"Between 20-50 cm of recent storm snow sit on a variety of old surfaces which consists of old wind slabs, a weak surface hoar layer and sun crusts on steep solar aspects. Both, storm and wind slabs, may still be reactive to human triggers. If triggered, slabs could step down to the buried surface hoar layer from February 22, forming large avalanches.
Wind slabs may be found on all aspects due to previously strong southwest wind switching to strong northeast wind. Northeast wind is atypical, so you may find wind slabs in terrain features that don't typically have them. These slabs could be touchy, as they may overly a weak layer of surface hoar. Use extra caution as you approach exposed terrain features.
oderate to strong northeast and east wind formed wind slabs at all elevations which might be reactive to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Moderate to strong northeast wind formed wind slabs at all elevations which are reactive to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9e6ap","text":"The recent storm snow may sit on a weak layer of surface hoar at treeline and below and a sun crust on steep solar aspects. With warming temperatures and solar input slab properties of the recent storm snow might increase and make it more likely to trigger slab avalanches on this weak layer.
Moderate easterly wind will continue to form fresh wind slabs on previously windward slopes at all elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3u7f9","text":"The recent storm delivered 20-40 cm of snow which may sit on a weak layer of surface hoar at treeline and below and a sun crust on steep solar aspects. Assess the bond of the storm snow with the old surface and travel conservatively.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ce0a8","text":"
An atypical loading pattern is occurring due to wind blowing from the northeast. This means that slopes that often don't have wind slabs may hold them this weekend. Use extra caution as you approach exposed terrain features.
Wind from variable directions has likely formed wind slabs on all aspects. The most recent wind has been from the northeast, meaning you may find wind slabs in atypical terrain features. Fresh slabs could form quickly on Saturday with new snowfall in the south of the region. Use caution as you enter wind-affected terrain.
The recent storm snow may sit on a weak layer of surface hoar at treeline and below and a sun crust on steep solar aspects. With warming temperatures and solar input slab properties of the recent storm snow might increase and make it more likely to trigger avalanches on this weak layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f6e0r","text":"Moderate northeast wind formed wind slabs in the alpine and at exposed treeline which might be reactive to human triggers.
Strong outflow winds are drifting the recent snow into fresh wind slabs in a reverse-loading pattern that may be possible to human trigger. These conditions may also bring cornices to their breaking point.
Recent new snow combined with moderate northeast wind have formed wind slabs in the alpine and at exposed treeline.
Moderate to strong northeast wind formed wind slabs in the alpine and at treeline which might be reactive to human triggering. Exposure to the sun might increase the reactivity of wind slabs especially on steep solar aspects.
Strong easterly winds are transporting recent snow onto lee features and building touchy wind slabs. There is ample snow for transport with this reverse-loading pattern, and another 5-10 cm of snow is possible by Saturday afternoon (up to 20 cm of snow may fall in favored up-slope areas). These conditions may also bring cornices to their breaking point.
Higher elevations in the region hold up to 30 cm of recent snow that may remain reactive to human triggering over the short term. Recent slabs won't have much time to stabilize before Friday's switch to northeast winds begins to reverse-load loose snow into new slabs over previously scoured surfaces.
Light new snow amounts and elevated southwest winds have formed reactive new wind slabs over leeward terrain. Recent slabs won't have much time to stabilize before Friday's switch to northeast winds begins to reverse-load loose snow into new slabs over previously scoured surfaces.  Keep your guard up in exposed lower elevations, strong outflow winds may form slabs over a buried layer of surface hoar.
5-25 cm of new snow is forming storm slabs over wind-affected surfaces, crusts and possibly isolated patches of surface hoar. Expect human triggered avalanches at this interface, especially on steep solar aspects and lee terrain features where moderate winds have loaded new snow into deep pockets.
oderate to strong northeast and east wind formed wind slabs at all elevations which might be reactive to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"The recent storm snow may sit on a weak surface hoar layer and a sun crust on steep solar aspects. Both, storm and wind slabs, may be reactive to human triggers especially where the slab properties increase due to warming temperatures and solar radiation. If triggered, slabs could step down to the buried persistent surface hoar layer, forming large avalanches.
Wind slabs were recently formed from strong northeast wind. This wind direction is atypical, so you may find wind slabs in terrain features that don't typically have them. This snow will further load deeper layers, meaning there is potential for step-down avalanche activity.
Winds associated with an arctic front are expected to drift the recent snow in a reverse-loading pattern. This may form wind slabs that are possible to human trigger, especially in areas where surface hoar sits at the interface. These conditions may also bring cornices to their breaking point.
Winds are forecast to change direction to the northeast and increase. There is ample snow for transport with this reverse-loading pattern, and another 15 cm of new snow is possible by Friday afternoon. These winds are expected to drift recent snow into fresh wind slabs that may be reactive to human triggering. Given recent variability in wind direction, few aspects will be spared from wind slab concerns.
Moderate to strong northeast wind on Friday will form fresh wind slabs during the day on previously windward slopes at all elevations. The wind shifted from strong southerly wind during the recent storm to northwest wind before it will shift to northeast on Friday morning. Wind slabs on all aspects might be reactive to human triggering with fresh wind slabs forming throughout the day.
Reactive wind slabs continue to be reported at higher elevations. Recent slabs won't have much time to stabilize before Friday's switch to northeast winds begins to reverse-load loose snow into new slabs over previously scoured surfaces. Keep your guard up in exposed lower elevations, strong outflow winds may form slabs over a buried layer of surface hoar.
The recent storm delivered 15-30 cm of snow which may sit on a weak layer of surface hoar at treeline and below and a sun crust on steep solar aspects. The new snow is not expected to bond well with these previous surfaces. Assess the bond of the storm snow with the old surface and travel conservatively.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ea512","text":"Moderate northeast wind will form fresh wind slabs on previously windward slopes at all elevations. The wind will shift from a westerly direction to northeast on Friday morning. Expect fresh wind slabs to develop throughout the day with increasing sensitivity to trigger. Previously formed wind slabs might still be reactive to human triggers.
ind slabs seem to be everywhere. They are most concerning for human triggering in steep, convex and unsupported terrain.
Winds on the weekend created new wind slabs on south, southwest, and west aspects--these are the primary concern. However, older wind slabs on most aspects from highly variable winds last week are still lingering so expect a mixed bag on all aspects in exposed terrain.
The recent storm delivered 20-40 cm of snow which may sit on a weak layer of surface hoar at treeline and below and a sun crust on steep solar aspects. The new snow is not expected to bond well with these previous surfaces. Assess the bond of the storm snow with the old surface and travel conservatively.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ce0a8","text":"Moderate northeast wind will form fresh wind slabs on previously windward slopes at all elevations. The wind will shift form a westerly direction on Friday morning. Expect fresh wind slabs to develop throughout the day with increasing sensitivity to trigger. Older wind slabs might still be reactive to human triggers.
Winds are forecast to change direction (northeast) and increase in a strong arctic outflow event. These winds are expected to drift the recent snow into fresh wind slabs that may be reactive to human triggering. Given recent variability in wind direction, few aspects will be spared from wind slab concerns.
Winds are forecast to change direction to the northeast and increase. There is ample snow for transport with this reverse-loading pattern, and another 5-10 cm of snow is possible by Friday afternoon. These winds are expected to drift recent snow into fresh wind slabs that may be reactive to human triggering. Given recent variability in wind direction, few aspects will be spared from wind slab concerns.
Winds are forecast to shift to the northeast and increase with the arctic outflow. These winds are expected to drift recent snow into fresh wind slabs that may be reactive to human triggering. Given recent variability in wind direction, few aspects will be spared from wind slab concerns. This problem is expected to be more reactive where surface hoar sits at the interface.
Wind slabs may persist where the snowpack didn't warm up much over the weekend. Natural avalanches are unlikely but human triggering remains possible in these isolated areas.
Around 5 to 15 cm of snow is forecast for the region, with the most forecast for Kootenay Pass and for the Okanagan Valley. The snow will fall with strong easterly wind. East wind is atypical, so you may find wind slabs in terrain features that don't typically have them. This snow will further load deeper layers, meaning there is potential for step-down avalanche activity.
Light snowfall with shifting and increasing winds are expected to form touchy new wind slabs over the day on Friday, with lower elevations potentially seeing the greatest wind effect. Wind loading and any resulting surface avalanches will test recently buried storm interfaces and a deeper persistent weak layer, bringing potential for step-down avalanche activity.
20-40 cm new snow from Tuesday fell with with moderate to strong west and southwest winds. Expect wind slabs to develop in the lee of terrain features. In the Pine Pass and Mackenzie areas, storm and wind slabs are possibly adding additional load to a weak layer of surface hoar buried 50-80 cm that may be found at the treeline elevation band.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"21vn8","text":"
The snowpack will undergo a rapid change as the freezing level rises and the sun shines on the mountains. The freezing level will reach around 2100 m for much of the region. The most snowpack warming will occur on sun-exposed aspects during the heat of the day. However, all aspects should be treated as suspect if you find moist or wet snow. Cornices will also weaken with the warming trend. Back off and avoid avalanche terrain if you start to notice natural avalanche activity.
Wind slabs may persist where the snowpack didn't warm up much over the weekend. Natural avalanches are unlikely but human triggering remains possible in these isolated areas--probably more so on steep sunny terrain features where solar radiation is strongest.
Strong winds have drifted recent snow into wind slabs that are possible to trigger, especially in areas where surface hoar sits at the interface.
The snowpack will undergo a rapid change as the freezing level rises and the sun shines on the mountains. The freezing level will reach around 2400 m for much of the region. The most snowpack warming will occur on sun-exposed aspects during the heat of the day. However, all aspects should be treated as suspect if you find moist or wet snow. Cornices will also weaken with the warming trend. Back off and avoid avalanche terrain if you start to notice natural avalanche activity.
Moderate to strong northeast wind formed wind slabs at all elevations which are reactive to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9e6ap","text":"
Some areas of the South Rockies may see intense and significant snowfall accumulations. Anywhere from 10-40 cm may accumulate by Saturday afternoon, with higher totals expected in up-slope areas in the east of the region. Strong easterly winds will accelerate the formation of touchy slabs, and there is ample snow for transport with this reverse-loading pattern. These conditions may also bring cornices to their breaking point.
Wind from variable directions has likely formed wind slabs on all aspects. The most recent wind has been from the northeast, meaning you may find wind slabs in atypical terrain features. Fresh slabs could form quickly on Saturday with new snowfall in the south of the region. Use caution as you enter wind-affected terrain.
Light accumulations of snow and recent strong southwest wind have potentially formed wind slabs in steep alpine terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
Strong outflow winds have drifted recent snow into wind slabs in a reverse loading pattern that may remain possible to human trigger. Cornices may also reaching their breaking point.
Wind slabs are still a concern in the Alpine and Treeline elevation bands. Multiple layers of wind slab may be found in wind prone areas.
Wind slabs were recently formed from strong northeast wind. This wind direction is atypical, so you may find wind slabs in terrain features that don't typically have them. This snow will further load deeper layers, meaning there is potential for step-down avalanche activity.
New snow from Monday and Tuesday night combined with south switching to north winds has promoted new wind slab formation in the lee of terrain features. This new snow is obscuring wind slabs that formed on all aspects and elevations during a wind event late last week.
An atypical loading pattern with wind from the northeast has formed wind slabs on terrain features that may not often have them. Use extra caution as you approach steep slopes in exposed terrain, particularly near ridge lines.
Wind slabs may be found on all aspects due to previously strong southwest wind switching to strong northeast wind. Northeast wind is atypical, so you may find wind slabs in terrain features that don't typically have them. These slabs could be touchy, as they may overly a weak layer of surface hoar. Use extra caution as you approach exposed terrain features.
Strong easterly winds have drifted available snow into wind slabs on lee terrain features. This wind direction is atypical, so you may find wind slabs in terrain features that don't typically have them.
Moderate to strong northeast wind formed wind slabs in the alpine and at treeline which might be reactive to human triggering.
The snowpack will undergo a rapid change as the freezing level rises and clear skies prevail. The most warming will occur on sun-exposed slopes during the heat of the day. However, the freezing level will be above the mountain tops, meaning that all aspects should be treated as suspect, particularly if you find moist or wet snow. Back off and avoid avalanche terrain if you start to notice natural avalanche activity.
Recent moderate to strong wind blowing from a variety of directions has formed wind slabs on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9e6ap","text":"
Strong easterly winds have drifted the 10-20 cm of new snow into wind slabs on lee terrain features in a reverse loading pattern. These wind slabs may remain possible to human trigger. Cornices may also be reaching their breaking point.
Strong easterly winds have drifted the 10-20 cm of new snow into wind slabs on lee terrain features in a reverse loading pattern. These wind slabs may be possible to human trigger. Cornices may also be reaching their breaking point.
Another day of warm weather will destabilize surface snow. The most warming will occur on sun-exposed slopes during the heat of the day, but be suspect of any steep slope that may be heating up, especially if you notice moist snow. Cornices will also weaken with the warming trend.
Recent moderate to strong wind blowing from a variety of directions has formed wind slabs on all aspects.
Another day of warm weather will destabilize surface snow. The most warming will occur on sun-exposed slopes during the heat of the day, but be suspect of any steep slope that may be heating up, especially if you notice moist snow. Cornices will also weaken with the warming trend.
ew snow falling over Wednesday night and Thursday will introduce a fresh surface instability to the region. Forecast amounts vary, meaning hazards may range from small wind slabs forming on leeward slopes to more widespread storm slabs affecting most avalanche terrain.
oderate to strong northeast and east wind formed wind slabs at all elevations which might be reactive to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Strong winds have drifted recent snow into wind slabs that are possible to trigger, especially in areas where surface hoar sits at the interface.
Wind slabs are still a concern in the Alpine and Treeline elevation bands. Multiple layers of wind slab may be found in wind prone areas.
Triggering wind slab avalanches remains possible after strong northeast wind formed slabs in atypical terrain features.
Wind slabs from recent outflow winds could still be triggered by riders. Use particular caution in steep slopes immediately adjacent to ridge lines.
New wind slabs are expected to form with forecast new snow and elevated southwest winds. Recent wind transport from north winds means that both recent and fresh wind slabs may be found on a wide range of aspects on Thursday.
Another day of warm weather will destabilize surface snow. The most warming will occur on sun-exposed slopes during the heat of the day. However, the freezing level will be above the mountain tops, meaning that steep slopes on all aspects should be treated as suspect, particularly if you notice moist snow on the surface.
Recent new snow combined with moderate northeast wind have formed wind slabs in the alpine and exposed treeline.
Strong easterly winds have drifted the 10-20 cm of new snow into wind slabs on lee terrain features in a reverse loading pattern. These wind slabs may be possible to human trigger. Cornices may also be reaching their breaking point.
Strong outflow winds have drifted recent snow into wind slabs in a reverse loading pattern that may remain possible to human trigger. Cornices may also reaching their breaking point.
Strong winds have drifted recent snow into wind slabs that are possible to trigger, especially in areas where surface hoar sits at the interface. A significant warming event on Sunday is expected to rapidly destabilize slabs, initiate wet loose avalanches, and bring cornices to their breaking point. This activity is likely to be most prominent on steep slopes that receive direct day-time solar radiation (slopes that face south through west).
Triggering wind slab avalanches remains possible after strong northeast wind formed slabs in atypical terrain features last week.
Wind has been pretty light, but there was just enough wind Sunday night into Monday to form wind slabs which should be confined to high elevation terrain.
Wind slabs are still a concern in the Alpine and Treeline elevation bands. Multiple layers of wind slab may be found in wind prone areas.
Wind slab avalanches remain a concern. Watch for wind slabs in unusual terrain features after last week's strong wind from the northeast.
Triggering wind slabs remains possible after strong northeast wind formed slabs in atypical terrain features last week.
Strong outflow winds have drifted recent snow into wind slabs in a reverse loading pattern that may remain possible to human trigger.
Wind slabs formed during a reverse loading pattern from strong easterly wind. The most suspect terrain features are steep slopes near ridges. Should a wind slab be triggered, there is a potential that it could step down to a weak layer of faceted grains above a melt-freeze crust buried 30 to 60 cm.
Wind slabs formed during a reverse loading pattern from strong easterly wind. The most suspect terrain features are steep slopes near ridges. Should a wind slab be triggered, there is a potential that it could step down to a weak layer of faceted grains above a melt-freeze crust buried 40 to 80 cm.
unday's storm only produced a few centimetres of snow, but light to moderate winds may have formed shallow wind slabs in high elevation terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
New snow Sunday and Monday combined with wind blowing from a variety of directions will have created fresh wind slabs in exposed areas.
Wind slabs are expected to form as light snowfall continues with elevated west and/or southwest wind. Increase your caution in exposed terrain, particularly in lee slopes near ridges.
Wind slabs are expected to form as light snowfall continues with elevated west and/or southwest wind. Increase your caution in exposed terrain, particularly in lee slopes near ridges.
New slabs will likely be reactive on Monday with 15-25 cm of new snow and strong southwest wind in the forecast.
Wind slabs may form as the wind speed picks up, transporting Sunday night's snowfall. Use added caution at higher elevations, particularly near ridge lines.
Expect loose dry or wet avalanches to run in steep terrain facing the sun during the heat of the day.
Expect loose dry or wet avalanches to run in steep terrain facing the sun during the heat of the day.
A weak layer of surface hoar exists 40 to 80 cm below the surface and has produced a few large avalanches over the past weeks. The problem seems most prevalent on northwest to northeast aspects between 1700 m and 2100 m. While the likelihood of triggering a persistent slab avalanche is dropping, there is still some uncertainty about where and for how long this problem will persist.
Sunny weather will cause wet loose avalanches on steep sun-exposed slopes. It could also weaken cornices.
Previous moderate to strong winds blowing from a variety of directions formed wind slabs that may remain possible to trigger in isolated areas. Evaluate steep, wind-loaded terrain near and above treeline. If clouds dissipate, surface snow and cornices may also warm and weaken.
ingering windslabs from recent moderate to strong northeast winds may be still reactive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Previous moderate to strong winds blowing from a variety of directions formed wind slabs that may remain possible to trigger in isolated areas. Evaluate steep, wind-loaded terrain near and above treeline. If clouds dissipate, surface snow and cornices may also warm and weaken.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9e6ap","text":"
Lingering wind slabs from recent moderate to strong northeast winds may still be reactive to human triggering.
Sunny weather will cause wet loose avalanches on steep sun-exposed slopes. It could also weaken cornices.
Sunny weather will cause wet loose avalanches on steep sun-exposed slopes.
Periods of sun and daytime warming may cause wet loose avalanches on steep sun-exposed slopes.
Increasing southwest winds are expected to move Tuesday's snow into new wind slabs on leeward slopes, particularly near ridgetop.
Strong winds have drifted recent snow into wind slabs that are possible to trigger, especially where the slabs overly a weak layer of surface hoar.
Loose wet avalanche activity is most likely during the heat of the day when clear skies prevail. Avoid overhead exposure on sun-exposed slopes as the snowpack heats up. Note that cornices are also large and could release during daytime heating.
ome buried wind slabs exist in the alpine.  Digging will be key.
Recent snow and moderate southwest wind may have formed unstable slabs in localized areas. Slab formation is most likely in the southern part of the region that has received more recent snow. There is uncertainty about how well these slabs will bond to underlying interfaces.
A weak layer of surface hoar exists 40 to 80 cm below the surface and has produced a few large avalanches over the past weeks. This problem seems most prevalent on northwest to northeast aspects between 1700 m and 2100 m. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"40id0","text":"While the likelihood of triggering a persistent slab avalanche is dropping, there is still some uncertainty about where and for how long this problem will persist.
Watch for wet loose avalanches on steep sun-exposed slopes and remember cornices could become weak with daytime heating.
Sunny weather will cause wet loose avalanches on steep sun-exposed slopes. It could also weaken cornices.
Sunny weather will cause wet loose avalanches on steep sun-exposed slopes. It could also weaken cornices.
Watch for wet loose avalanches on steep sun-exposed slopes and remember cornices could become weak with daytime heating.
Small loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches.
Small loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches..
mall loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Small loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches.
Light accumulations of snow and recent strong southwest wind have potentially formed wind slabs in steep alpine terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
Small new wind slabs will likely result from light snowfall and subsequent outflow winds on Wednesday. Increase caution as you encounter new wind-affected snow, considering areas where the greatest wind loading occurred. Wind slab and loose snow releases will be more likely to trigger on steep sun-exposed terrain features.
Recent winds may have formed reactive slabs on lee features below ridgetops.
Light flurries and strong southwest wind could form isolated wind slabs at higher elevations.
Recent light snowfall and shifting winds will promote new wind slab formation on a variety of aspects. These are likely thin but may be most reactive where they sit on a crust.
Up to 15 cm of new snow may accumulate by Monday afternoon in favored areas. Wind slab avalanches may increase in their sensitivity to human-triggering where moderate southwest winds are loading the new snow into slabs on lee features.
Light flurries and strong southwest wind could form isolated wind slabs at higher elevations.
Recent winds may have formed reactive slabs on lee features below ridgetops.
15-25 cm of recent snow may have left unstable slabs in steep terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
Loose wet avalanche activity is most likely during the heat of the day when clear skies prevail. Avoid overhead exposure on sun-exposed slopes as the snowpack heats up. Note that cornices are also large and could release during daytime heating.
Modest air temperature and sunny skies combine to weaken the snow surface. As this occurs, loose wet avalanche activity may result. The highest likelihood of this occurring is during the heat of the day on sun-exposed slopes. Note that the same warming trend also weakens cornices, so best to stay well back from them on ridges and avoid travelling beneath them.
Modest air temperature and sunny skies combine to weaken the snow surface. As this occurs, loose wet avalanche activity may result. The highest likelihood of this occurring is during the heat of the day on sun-exposed slopes. Note that the same warming trend also weakens cornices, so best to stay well back from them on ridges and avoid travelling beneath them.
Loose wet avalanche activity is most likely during the heat of the day when clear skies prevail. Avoid overhead exposure on sun-exposed slopes as the snowpack heats up. Note that cornices are also large and could release during daytime heating.
ind slabs seem to be everywhere. They are most concerning for human triggering in steep, convex and unsupported terrain.
Modest air temperature and sunny skies combine to weaken the snow surface. As this occurs, loose wet avalanche activity may result. The highest likelihood of this occurring is during the heat of the day on sun-exposed slopes. Note that the same warming trend also weakens cornices, so best to stay well back from them on ridges and avoid travelling beneath them.
Watch for wet loose avalanches on steep sun-exposed slopes and remember cornices could become weak with daytime heating.
Sunny weather will cause wet loose avalanches on steep sun-exposed slopes. It could also weaken cornices.
Sunny weather will cause wet loose avalanches on steep sun-exposed slopes. It could also weaken cornices.
Small loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches..
Small loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches.
Small loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches.
mall loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Modest air temperature and sunny skies combine to weaken the snow surface. As this occurs, loose wet avalanche activity may result. The highest likelihood of this occurring is during the heat of the day on sun-exposed slopes. Note that the same warming trend also weakens cornices, so best to stay well back from them on ridges and avoid travelling beneath them.
Loose wet slides will start in the PM with daytime warming.  Steep solar slopes especially in thinner areas will be places to avoid.  Any small slide may step down to the deeper basal layers.
Light accumulations of snow and recent strong southwest wind have potentially formed wind slabs in steep alpine terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
Up to 15 cm of new snow may accumulate by Monday afternoon in favored areas. Wind slab avalanches may increase in their sensitivity to human-triggering where moderate southwest winds are loading the new snow into slabs on lee features.
p to 10 cm of new snow may accumulate by Monday afternoon in favored areas. Wind slab avalanches may increase in their sensitivity to human-triggering where moderate southwest winds are loading the new snow into slabs on lee features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Light accumulations of snow and strong southwest wind have potentially formed wind slabs in steep alpine terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
Scattered flurries could form unstable slabs in localized areas. Slab formation is most likely in the southern part of the region, which has received the most snow so far and is also expecting the most on Tuesday. There is uncertainty about how well these slabs will bond to underlying interfaces.
Roughly 5-15 cm of new snow could form unstable slabs in steep terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
Periods of sun may continue to promote wet loose avalanches on steep sun-exposed slopes during the day. It could also weaken cornices.
Periods of sun may continue to promote wet loose avalanches on steep sun-exposed slopes during the day. It could also weaken cornices.
Small loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches..
Small loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches.
Small loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches.
mall loose dry or wet avalanches are possible in steep terrain facing the sun during the heat of the day. Cornices may also warm and weaken and could act as triggers for large slab avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Light flurries and strong southwest wind could form isolated wind slabs at higher elevations.
ome buried wind slabs exist in the alpine.
Modest air temperature and sunny skies combine to weaken the snow surface. As this occurs, loose wet avalanche activity may result. The highest likelihood of this occurring is during the heat of the day on sun-exposed slopes. Note that the same warming trend also weakens cornices, so best to stay well back from them on ridges and avoid travelling beneath them.
Modest air temperature and sunny skies combine to weaken the snow surface. As this occurs, loose wet avalanche activity may result. The highest likelihood of this occurring is during the heat of the day on sun-exposed slopes. Note that the same warming trend also weakens cornices, so best to stay well back from them on ridges and avoid travelling beneath them.
ew snow in the south of the region and strong wind throughout the region have likely formed new wind slabs in exposed terrain. These slabs may take some time to bond to previous surfaces. Use caution as you approach lee terrain features, particularly near ridges.
Light accumulations of snow and strong southwest wind have potentially formed wind slabs in steep alpine terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
Recent light snowfall and shifting winds have likely formed new wind slabs on a variety of aspects. These are likely thin but may be most reactive where they sit on a crust. Additionally, expect to see the recent new snow sluff from steep terrain when the sun is out.
Wind slabs may form as forecast north winds pick up over Tuesday night, transporting recent snowfall. Use added caution at higher elevations, particularly near ridge lines.
ecent winds may have formed reactive slabs on lee features below ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Up to 15 cm of new snow may accumulate by Monday afternoon in favored areas. Wind slab avalanches may increase in their sensitivity to human-triggering where moderate southwest winds load the new snow into slabs on lee features.
Wind slabs will form as new snow falls with strong southwest wind. Apply added caution in exposed terrain, particularly in lee slopes near ridges.
New snow will form reactive slabs on steep terrain throughout the region. There is uncertainty about how well these slabs will bond to underlying interfaces.
In most of the region the problem is limited to high elevation wind slabs as only a few cm of new snow fell Sunday.
ew snow in the south of the region and strong wind throughout the region have likely formed wind slabs in exposed terrain. Recent shifting wind directions mean that new slabs may be found on a wide range of aspects.
Light accumulations of snow and recent strong southwest wind have potentially formed wind slabs in steep alpine terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
trong winds may form small wind slabs on lee features below ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Scattered flurries may have formed unstable slabs in localized areas. Slab formation is most likely in the southern part of the region that has received more recent snow. There is uncertainty about how well these slabs will bond to underlying interfaces.
Increasing southwest winds are expected to move recent new wind slabs on leeward slopes, particularly near ridgetop.
ew winds and windslabs are building
Steady southwest winds are redistributing loose surface snow and building new wind slabs on leeward slopes, particularly near ridgetop.
round 15-30 cm snow is forecasted to fall with steady west winds. Reactive storm slabs will develop through the day.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"db9ri","text":"
Light snowfall and strong winds may form small wind slabs on leeward slopes that are reactive to human triggers.
Steady southwest winds are redistributing loose surface snow and building new wind slabs on leeward slopes, particularly near ridgetop.
Recent snow and moderate southwest wind may have formed unstable slabs in localized areas. Slab formation is most likely in the southern part of the region that has received more recent snow. There is uncertainty about how well these slabs will bond to underlying interfaces.
10-25 cm new snow is expected by the end of Saturday around the region. Falling with steady westerlies, slab properties are expected to develop through the day especially in areas impacted by wind.
Steady southwest winds are redistributing new flurries and loose surface snow building new wind slabs on leeward slopes, particularly near ridgetops and crossloaded terrain features.
Recent winds may have formed reactive slabs on lee features below ridgetops.
15-20 cm of new snow may accumulate in favored areas by Friday afternoon, forming unstable slabs in steep terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
Flurries beginning to accumulate around the region will be impacted by steady winds. New flurries and loose snow will be redistributed and build new slabs on leeward slopes, particularly near ridgetop.
Storm slabs will begin to form as the new snow amounts increase throughout the weekend. Wind-affected slopes will be the first to become reactive to human triggers.
lurries falling with westerly winds will redistribute loose snow and encourage slab development. Forecast amounts vary, meaning hazards may range from small wind slabs forming on leeward slopes to more widespread storm slabs affecting most avalanche terrain.
Light accumulations of snow and recent strong southwest wind have potentially formed wind slabs in steep alpine terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
ew winds and windslabs are building
10-20 cm new snow is expected by the end of Saturday around the region. Falling with steady southwesterlies, slab properties are expected to develop through the day especially in areas impacted by wind.
Storm slabs will begin to form as the new snow stacks up throughout the weekend. Wind-affected slopes will be the first to become reactive to human triggers.
Storm slabs will begin to form as the new snow stacks up throughout the day. Leeward slopes at treeline and above will be the first to become reactive to human triggers.
15-25 cm of recent snow may have left unstable slabs in steep terrain. There is uncertainty about how well these slabs will bond to underlying interfaces.
Light snowfall and moderate winds may form small wind slabs on leeward slopes that are reactive to human triggers.
ecent winds may have formed reactive slabs on lee features below ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Storm slabs will begin to form as the new snow amounts increase throughout the weekend. Wind-affected slopes will be the first to become reactive to human triggers.
Recent light snowfall and shifting winds have likely formed new wind slabs on a variety of aspects. These are likely thin but may be most reactive where they sit on a crust. Additionally, expect to see the recent new snow sluff from steep terrain when the sun is out.
Storm slabs will begin to form as the new snow stacks up throughout the day. Leeward slopes at treeline and above will be the first to become reactive to human triggers.
Fresh wind slabs may begin to form at ridge crest Thursday.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6i6lf","text":"Watch for increasingly sensitive storm slabs at all elevations on Friday as new snow and wind come together.
New snow and strong southwest wind will form unstable storm slabs. Slab formation is most likely in wind-drifted areas. There is uncertainty about how well these slabs will bond to underlying interfaces.
Heavy snowfall and strong southwest wind are expected to build widespread, reactive storm slabs. There is uncertainty about how well these slabs will bond to underlying interfaces.
Ongoing incremental snowfall and southwest winds have potentially formed wind slabs in steep terrain at upper elevations. There is uncertainty about how well these slabs are bonding to underlying interfaces.
Heavy snowfall and strong southwest wind are expected to build widespread, reactive storm slabs at upper elevations. There is uncertainty as to how well these slabs will bond to underlying interfaces.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Unknown dist and sensitivity
developing problem....
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Cold temperatures have reduced strength and faceted the snowpack, especially in areas with a shallow snowpack. Wind slabs and loading from new snow may trigger instabilities at the bottom of the snowpack.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
There is uncertainty about how easy it could be to trigger a large avalanche on one of several crusts and weak layers in the lower snowpack. Choosing conservative terrain is the best way to manage this uncertainty.\n
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
A recent pattern of large avalanches in the South Rockies and neighbouring regions suggest there are buried weak layers in the snowpack that are capable of producing large avalanches.
30-40 cm of recent snow has formed slabs that could be triggered in steep and wind affected terrain.
Steady wind from the west is forming slabs in the alpine and near ridgetops.
Steady wind from the west is likely forming fresh wind slabs in the alpine and near ridgetops.
The crusts from November are widespread and of varying condition. Some areas have it intact, while others have faceted out and become touchy. So far alpine & N-NE aspects have been problematic.
A recent pattern of large avalanches in the South Rockies and neighbouring regions suggests there are buried weak layers in the snowpack that are capable of producing large avalanches. These could be triggered by smaller wind slab avalanches.
he likelihood of triggering a large avalanche on one of the crusts and weak layers in the lower snowpack is gradually reducing, but the consequence is high. Avoid steep and complex terrain while these layers are being loaded by new snow and wind.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A persistent weak layer has been responsible for numerous recent avalanches. This scenario is atypical for the Sea to Sky region, and needs to be treated with caution. The likelihood of triggering a large persistent slab avalanche will be increasing as new snow accumulates.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=persistent+weak+layer#persistent-weak-layer","target":"
persistent weak layer has been responsible for numerous recent avalanches. This scenario is atypical for the Sea to Sky region, and needs to be treated with serious caution. The likelihood of triggering a large persistent slab avalanche will be increasing as new snow accumulates.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=persistent+weak+layer#persistent-weak-layer","target":"
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A couple of weak layers formed in late November and early December are now sitting about 1 m below the surface.
Large persistent slab avalanches are possible due to weak layers buried 30-50 cm below the surface. These layers of surface hoar, facets, and crusts have been reactive in recent snowpack tests and will become extra sensitive with the weight of the new snow. Conservative terrain choices are the best way to manage the uncertainties associated with this problem.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Weak layers near the base of the snowpack remain a concern. Likely trigger points are shallow rocky areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":0,"length":41,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#deep-pe
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
A couple of weak layers formed in late November and early December are now sitting about 1+ m below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":139,"length":13,"key":0},{"offset":153,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
A couple of weak layers formed in late November and early December are now sitting about 1 m plus below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":143,"length":13,"key":0},{"offset":157,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
A couple of weak layers formed in late November and early December are now sitting about 1 m plus below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":143,"length":13,"key":0},{"offset":157,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
Weak layers near the base of the snowpack remain a concern. Likely trigger points are shallow rocky areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":0,"length":41,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#deep-pe
A couple of weak layers formed in late November and early December are now sitting about 1+ m below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":139,"length":13,"key":0},{"offset":153,"length":15,"key":1}],"data":{}},{"key":"8ibmf","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
A couple of weak layers formed in late November and early December are now over 100 cm below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":132,"length":13,"key":0},{"offset":146,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
Weak layers near the base of the snowpack remain a concern. Likely trigger points are shallow rocky areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":0,"length":41,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#deep-pe
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
With the warm temperatures, even light winds have built reactive slabs. They became noticeably more reactive and stiffer late this afternoon. Lots of cracking observed today.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A couple of weak layers formed in late November and early December are now over 100 cm below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":132,"length":13,"key":0},{"offset":146,"length":15,"key":1}],"data":{}},{"key":"bdc45","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
Additional loading from storm snow will stress a weak layer of surface hoar, now anywhere from 60-100 cm deep.
A couple of weak layers formed in late November and early December are now over 100 cm below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":132,"length":13,"key":0},{"offset":146,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
A couple of weak layers formed in late November and early December are now sitting about 1 m below the surface.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ddlnl","text":"
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A couple of weak layers formed in late November and early December are now over 100 cm below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":132,"length":13,"key":0},{"offset":146,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
A couple of weak layers formed in late November and early December are now over 100 cm below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":132,"length":13,"key":0},{"offset":146,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
A couple of weak layers formed in late November and early December are now sitting about 1 m below the surface. Likely trigger points are shallow, rocky areas, especially at higher elevations.
A couple of weak layers formed in late November and early December are now over 100 cm below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":132,"length":13,"key":0},{"offset":146,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
A couple of weak layers formed in late November and early December are now sitting about 1 m below the surface. Likely trigger points are shallow, rocky areas, especially at higher elevations.
Storm slabs formed during the latest storm may remain touchy to human traffic. Storm slab avalanches may step down to a buried weak layer, forming destructive avalanches that could travel far.
Large persistent slab avalanches are possible due to weak layers buried 30-50 cm below the surface. These layers of surface hoar, facets, and crusts have been reactive in recent snowpack tests and will become extra sensitive with the weight of the new snow. Conservative terrain choices are the best way to manage the uncertainties associated with this problem.
Storm slabs formed during the weekend's storm may remain touchy to human traffic. With the substantial amount of snow that fell, it may take a bit more time for the snow to stabilize. If triggered, storm slab avalanches may step down to a buried weak layer, forming destructive avalanches that could travel far.
Three different weak layers may be found in the snowpack. It is uncertain whether the rapid loading from the storm cleaned them out and hence whether they will remain a concern in the distant future. Until more evidence exists, it is prudent to assume the layers are present and capable of forming very large, destructive avalanches. Best to avoid alpine terrain until the uncertainty about these layers decreases.
A couple of weak layers formed in late November and early December are now over 100 cm below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":132,"length":13,"key":0},{"offset":146,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
Storm slabs formed during the weekend's storm may remain touchy to human traffic. With the substantial amount of snow that fell, it may take a bit more time for the snow to stabilize. If triggered, storm slab avalanches may step down to a buried weak layer, forming destructive avalanches that could travel far.
A couple of weak layers formed in late November and early December are now over 100 cm below the surface. This layer may present as surface hoar, a crust, facets or a combination of those, depending on elevation and aspect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":132,"length":13,"key":0},{"offset":146,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary/#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary/#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#facetcr
Wind has redistributed loose snow into isolated reactive slabs around ridges and in steep alpine terrain.
Storm slabs formed during the latest storm may remain touchy to human traffic. Storm slab avalanches may step down to a buried weak layer, forming destructive avalanches that could travel far.
Three different weak layers may be found in the snowpack. It is uncertain whether the rapid loading from the storm cleaned them out and hence whether they will remain a concern in the distant future. Until more evidence exists, it is prudent to assume the layers are present and capable of forming very large, destructive avalanches. Best to avoid alpine terrain until the uncertainty about these layers decreases.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Winds have redistributed snow loose snow, more reactive deposits may be found around ridges and in lee terrain features.
We have noticed enough cornice triggered avalanches to throw this on the problem list. Be aware of overhead exposure.
Winds have redistributed loose snow, more reactive slabs may be found around ridges and in lee terrain features.
Oops, overwrote my Wind Slab problem for today (see fx archive)","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"643i0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c34tm","text":"Fresh storm slabs will build throughout the day. Natural and human triggered avalanches are likely in areas that receive >20 cm of snow and alpine slopes that are being loaded by the wind.
Large persistent slab avalanches are possible due to weak layers buried 30-50 cm below the surface. These layers of surface hoar, facets, and crusts have been reactive in recent snowpack tests and will become extra sensitive with the weight of the new snow. Conservative terrain choices are the best way to manage the uncertainties associated with this problem.
Wind is redistributing loose snow and developing touchy wind slabs. Keep your guard up, a small avalanche failing in the upper snowpack has the potential to step down to weak basal layers and trigger a large destructive avalanche.
New snow, wind loading, and warming will stress weak layers of surface hoar buried 40-100 cm deep. Storm slab avalanches may step down to these layers and produce large avalanches with wide propagation across terrain features.
Wind is redistributing loose snow and developing touchy windslabs. Keep your guard up, a small avalanche failing in the upper snowpack has the potential to step down to weak basal layers triggering large, destructive avalanches.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
30-100 cm of snow from the recent storm formed slabs over a weak layer of surface hoar in sheltered areas from 1800-2200 metres. This layer continues to produce concerning snowpack test results and may fail under the weight of a person or machine. Storm slab avalanches may also step down to an even deeper buried weak layer, forming destructive avalanches that could travel far.
Persistent slabs may not be a concern in the south of the region, but a cautious snowpack evaluation is still warranted at higher elevations where recent snow has been redistributed into wind slabs in leeward terrain near ridgetop.
A pair of touchy weak layers are buried deep in the snowpack from the alpine down into the upper treeline and the consequences for triggering either one are severe. These layers have been responsible for many very large avalanches in the region over the past two weeks. Shallower but more reactive wind slabs may also step down to one of these deeper layers and create a very large, very destructive avalanche.
Persistent slabs may not be a concern in the south of the region, but a cautious snowpack evaluation is still warranted at higher elevations where recent snow has been redistributed into wind slabs in leeward terrain near ridgetop.
Strong wind from the southwest has formed touchy wind slabs in specific areas at higher elevations.
Large persistent slab avalanches are possible due to weak layers buried 30-50 cm below the surface. These layers of surface hoar, facets, and crusts have been reactive in recent snowpack tests and will become extra sensitive with the weight of the new snow. Conservative terrain choices are the best way to manage the uncertainties associated with this problem.
Although forecast winds have not fully materialized, moderate west winds expected overnight and into Saturday have the potential to drift the recent 10-15 cm of new snow into small touchy wind slabs in the alpine that will need to be managed. Expect this problem to increase with elevation and to be most pronounced in the immediate lee of wind-exposed terrain features. Wind slabs perched above shallow, rocky areas have potential to trigger a deeper weak layer to create a large avalanche.
Persistent slabs may not be a concern in the south of the region, but a cautious snowpack evaluation is still warranted at higher elevations where the 5-10 cm of new snow has been redistributed into wind slabs on leeward features near ridgetop.
ight new snow amounts combined with increasing winds are expected to form small but touchy new wind slabs that will need to be managed on Friday. Expect this problem to increase with elevation and to be most pronounced in the immediate lee of wind-exposed terrain features. Wind slabs perched above shallow, rocky areas have potential to trigger a deeper weak layer to create a large avalanche.
15-30 cm of new snow coupled with moderate southwest wind is likely to form fresh wind slabs in exposed alpine terrain features.
30-100 cm of snow from the recent storm formed slabs over a weak layer of surface hoar in sheltered areas from 1800-2200 metres. This layer continues to produce concerning snowpack test results and may fail under the weight of a person or machine. Storm slab avalanches may also step down to an even deeper buried weak layer, forming destructive avalanches that could travel far.
Shallower storm slab releases carry the risk of triggering a deeper weak layer to create a larger, more destructive avalanche.
A pair of touchy weak layers are buried deep in the snowpack from the alpine down into the upper treeline and the consequences for triggering either one are severe. These layers have been responsible for many very large avalanches in the region over the past two weeks. Shallower but more reactive wind slabs may also step down to one of these deeper layers and create a very large, very destructive avalanche.
Persistent slabs may not be a concern in the south of the region, but a cautious snowpack evaluation is still warranted at higher elevations where recent snow has been redistributed into wind slabs in leeward terrain near ridgetop.
10-30 cm of recently fallen snow coupled with moderate southwest wind has likely formed fresh wind slabs in exposed alpine terrain features.
These tend to be in immediate lee areas near ridges and crossloaded areas. There is a chance these could step down to the deeper layers.
10-20 cm of recently fallen snow coupled with moderate southwest wind has likely formed fresh wind slabs in exposed alpine terrain features.
Strong wind from the southwest has formed touchy wind slabs in specific areas at higher elevations. Recent wind slab avalanches have had wide propagations.
15-30 cm of new snow coupled with moderate southwest wind is likely to form fresh wind slabs in exposed alpine terrain features.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
A pair of touchy weak layers are buried deep in the snowpack near and above tree line, and the consequences for triggering either one are severe. These layers have been responsible for many very large avalanches in the region over the past two weeks. Shallower but more reactive wind slabs may also step down to one of these deeper layers and create a very large, very destructive avalanche.
A problematic weak layer is buried 30-70 cm deep in the snowpack in the north of the region. This layer has recently produced large and destructive avalanches that have travelled far. This problem is largely absent in the south of the region.
New snow, wind loading, and warming has likely stressed weak layers of surface hoar buried 50-120 cm deep. Smaller avalanches may step down to these layers and produce large avalanches that propagate across entire terrain features.
Although forecast winds have not fully materialized, there may still be areas at higher elevations where wind has drifted the 15-20 cm of new snow into deeper, more reactive slabs that will need to be managed. Expect this problem to increase with elevation and to be most pronounced in the immediate lee of wind-exposed terrain features. Wind slabs perched above shallow, rocky areas have potential to trigger a deeper weak layer to create a large avalanche.
Open terrain has been affected by wind, leaving unstable slabs around ridges and steep alpine terrain.
New snow and warming will stress weak layers of surface hoar buried 50-120 cm deep. Smaller avalanches may step down to these layers and produce large avalanches that propagate across entire terrain features.
At upper elevations, southwest winds previously drifted the most recent 15-25 cm of snow into wind slabs that may still be reactive to human triggering. Expect this problem to be most pronounced in the immediate lee of wind-exposed terrain features. Wind slab releases currently carry a serious risk of triggering a deeper weak layer, especially in shallow, rocky areas.
Large persistent slab avalanches are possible due to weak layers buried 30-50 cm below the surface. These layers of surface hoar, facets, and crusts have been reactive in recent snowpack tests and will become extra sensitive with the weight of the new snow. Conservative terrain choices are the best way to manage the uncertainties associated with this problem.
Settled snow from previous storms has formed a slab on weak surface hoar 100 to 160 cm below the surface. Natural avalanche activity has waned, but human triggering may still be possible in suspect areas such as shallow, rocky start zones or steep convexities. This avalanche problem is too deep in the snowpack for you to feel under your skis, track or feet.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":212,"length":26,"key":0},{"offset":248,"length":11,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#a-shallow-rocky-start-zone-is-an-area-of-the-snowpack"}},"1":{"type
At upper elevations, southwest winds previously drifted the most recent 5-15 cm of snow into wind slabs that may still be reactive to human triggering. Expect this problem to be most pronounced in the immediate lee of wind-exposed terrain features. Wind slab releases currently carry a serious risk of triggering a deeper weak layer, especially in shallow, rocky areas in the northern part of the region.
Persistent weak layers that have been slowly healing will be progressively tested by loading from forecast snowfall and wind. Shallower storm slab releases carry the risk of triggering one of these deeper weak layers to create a larger, more destructive avalanche.
Persistent weak layers that have been slowly healing will be progressively tested by loading from forecast snowfall and wind. Shallower storm slab releases carry the risk of triggering one of these deeper weak layers to create a larger, more destructive avalanche.
Precipitation is forecast to intensify and switch to rain, causing wet loose avalanches. Although these avalanches initiate as point releases, they have the potential to entrain large and destructive amounts of dense, heavy snow.
A problematic weak layer is buried 30-70 cm deep in the snowpack in the north of the region. New snow and wind will add additional load to this fundamentally unstable snowpack structure. This problem is largely absent in the south of the region.
Persistent weak layers that have been slowly healing will be tested by rapid loading from forecast snowfall and wind. Shallower but more touchy storm slab releases carry the risk of triggering one of these deeper weak layers to create larger, more destructive avalanches.
Persistent weak layers that have been slowly healing will be progressively tested by loading from forecast snowfall and wind. Shallower storm slab releases carry the risk of triggering one of these deeper weak layers to create a larger, more destructive avalanche.
A weak surface hoar layer is buried 50-70 cm below the surface. New snow or the weight of a rider could easily trigger avalanches on this layer.
There are multiple problematic weak layers between 70 and 180 cm below the snow surface that continue to produce very large and destructive avalanches.
Persistent weak layers that have been slowly healing will be progressively tested by loading from forecast snowfall and wind. Shallower storm slab releases carry the risk of triggering one of these deeper weak layers to create a larger, more destructive avalanche.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
There is still concern for heavy loads (storm slab avalanches running) to step down and trigger deeper weak layers buried in December.
Several different deeply buried weak layers can be found in the snowpack that have produced large avalanches. These weak layers may be tested by additional loading from new snow and wind. Shallower but more touchy wind slab releases carry the risk of triggering one of these deeper weak layers to create larger, more destructive avalanches.
Persistent weak layers that have been slowly healing will be progressively tested by loading from forecast snowfall and wind. Shallower storm slab releases carry the risk of triggering one of these deeper weak layers to create a larger, more destructive avalanche.
Forecast snowfall is expected to form touchy new slabs that will be primed for human triggering on Wednesday. The consequences of triggering a slab of new snow are greatly amplified by the fragile nature of the region's lower snowpack.
A problematic weak layer is buried 30-70 cm deep in the snowpack in the north of the region. New snow and wind will add a critical load to this fundamentally unstable snowpack structure. This problem is largely absent in the south of the region.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
There are multiple problematic weak layers between 70 and 180 cm below the snow surface that continue to produce very large and destructive avalanches. Additional loading from new snow and wind continues to test this layer. Shallower but more sensitive storm slabs carry the risk of triggering one of these deeper weak layers.
Persistent weak layers will be tested by rapid loading from snowfall and wind. Shallower, more reactive storm slabs carry the risk of triggering one of these deeper weak layers to create larger, more destructive avalanches.
Several different deeply buried weak layers can be found in the snowpack that have produced large avalanches. Rapid loading from new snow and wind is expected to test these persistent weak layers with a critical load. Shallower, more reactive storm slabs carry the risk of triggering one of these deeper weak layers to create larger, more destructive avalanches.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
Several persistent weak layers are buried in the snowpack. It still may be possible for humans to trigger them, or for storm slab avalanches to step down to them to form very large avalanches.
Persistent weak layers are being tested by the critical load from recent snowfall and wind. Shallower, more reactive storm slabs carry the risk of triggering one of these deeper weak layers to create larger, more destructive avalanches.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Thin windslabs may be sensitive to human triggering, especially near ridge crest.
problematic weak layer is buried 50-90 cm deep in the snowpack in the north of the region. Recent snow and wind has added a critical load to this fundamentally unstable snowpack structure. This problem is largely absent in the south of the region.
Several different persistent weak layers are being tested by the critical load from recent snowfall and wind. Shallower, more reactive storm slabs carry the risk of triggering one of these deeper weak layers to create larger, more destructive avalanches.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
A surface hoar layer is buried around 40 cm below the surface. New snow or the weight of a rider could easily trigger avalanches on this layer.
There is still concern for heavy loads (storm slab avalanches running) to step down and trigger deeper weak layers buried in December.
60-90 cm of snow has accumulated in the past week over a layer of surface hoar from late December. This layer has demonstrated reactivity past its due date as a storm slab interface and has produced large avalanches across aspects and elevations with incremental loading from new snow and wind. A few of these avalanches were human-triggered remotely from adjacent slopes.
Recent very large avalanches released naturally on a persistent weak layer formed in late November. Additional loading from new snow and wind continues to test this layer. Shallower but more sensitive storm slabs carry the risk of triggering one of these deeper weak layers.
There is still concern for heavy loads (storm slab avalanches running) to step down and trigger deeper weak layers buried in late November and early December.
There is still concern for heavy loads (storm slab avalanches running) to step down and trigger deeper weak layers buried in December.
50-70 cm of snow has accumulated in the past week over a widespread layer of surface hoar from late December. This layer has demonstrated reactivity past its due date as a storm slab interface and has produced large avalanches across aspects and elevations with incremental loading from new snow and wind. Several of these avalanches were human-triggered remotely from adjacent slopes.
There is still concern for heavy loads (storm slab avalanches running) to step down and trigger deeper weak layers.
Several persistent weak layers are buried in the snowpack. It still may be possible for humans to trigger them, or for storm slab avalanches to step down to them and form very large avalanches.
touchy weak layer is buried near the bottom of the snowpack. This layer has been responsible for many large, destructive avalanches in the region on a daily basis. The likelihood of triggering this layer remains elevated and the consequence of doing so would be severe.
50-90 cm of snow has accumulated in the past week over a layer of surface hoar from late December. This layer has demonstrated reactivity past its due date as a storm slab interface and has produced large avalanches across aspects and elevations with incremental loading from new snow and wind. A few of these avalanches were human-triggered remotely from adjacent slopes.
Several persistent weak layers are buried in the snowpack. Although these layers become harder to trigger as they get deeper, the destructive potential of a triggered avalanche increases. These layers could be triggered by humans where the snowpack is relatively thin or a wind slab avalanche could step down to them.
A concerning layer of surface hoar from late December is now buried 60-120 cm deep. This layer has produced many large avalanches across aspects and elevations, sometimes pulling back into low angle terrain. This problem warrants conservative margins with terrain decisions.
Persistent weak layers formed in mid to late December are buried 50-120 cm deep. These layers have produced large avalanches across aspects and elevations with incremental loading from new snow and wind.
Persistent weak layers formed in mid to late December are buried 60-120 cm deep. These layers have produced large avalanches across aspects and elevations with incremental loading from new snow and wind.
Two layers that cause concern:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4kppp","text":"In many parts of the region, with the exception potentially being near Coquihalla summit, recent storm snow may overly a touchy surface hoar layer found around treeline elevations in sheltered areas. This layer has produced large avalanches that have propagated far.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eiak3","text":"In the north half of the region, a weak layer is buried near the bottom of the snowpack. This layer has been responsible for recent large, destructive avalanches.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3bemd","text":"The likelihood of humans triggering these layers remains elevated due to the recent load applied to them. Storm slab avalanches could step down to these layers.
A buried crust can be found in the middle of the snowpack which we'll need to watch carefully as storms begin to roll in this weekend.  Avalanches failing on this interface could step down to the ground, especially in places of smooth ground cover like grassy slopes, rock slabs, glacial ice, etc.
Two layers of surface hoar from late December are now buried 60-120 cm deep. These layers have produced many large avalanches across aspects and elevations with incremental loading from new snow and wind. Significant loading from new snow has the potential to bring these weak layers to their tipping point and to create conditions for step-down avalanches.
Low density snow may be blown into unstable slabs on lee features at and above treeline, especially near ridgetops.
A layer of surface hoar from late December is now buried 60-100 cm deep. This layer has produced many large avalanches across aspects and elevations with incremental loading from new snow and wind. A few of these avalanches were human-triggered remotely from adjacent slopes.
Two layers of surface hoar from late December are now buried 60-120 cm deep. These layers have produced many large avalanches across aspects and elevations with incremental loading from new snow and wind. Significant loading from new snow has the potential to bring these weak layers to their tipping point and to create conditions for step-down avalanches.
The weak snowpack base still exists in much of the region. Although the likelihood of triggering this layer decreases as it gets buried deeper, the consequence of triggering an avalanche on this layer would be severe. Best to give the layer some time to heal given the large amount of recent load applied to it.
Two layers of surface hoar from late December are now buried 60-120 cm deep. These layers have produced many large avalanches across aspects and elevations with incremental loading from new snow and wind. Significant loading from new snow has the potential to bring these weak layers to their tipping point and to create conditions for step-down avalanches.
Deep persistent slab avalanches are becoming less likely to trigger. Conditions which may cause these deep layers to wake up and become active include: unusually high accumulations of new snow or wind-blown snow; rapid and prolonged warming; or from human-triggering in a thin, rocky start zone.
Large persistent slab avalanches are possible due to weak layers buried 30-50 cm below the surface. These layers of surface hoar, facets, and crusts have been reactive in recent snowpack tests and will become extra sensitive with the weight of the new snow. Conservative terrain choices are the best way to manage the uncertainties associated with this problem.
Two layers of surface hoar from late December are now buried 60-120 cm deep. These layers have produced many large avalanches across aspects and elevations with incremental loading from new snow and wind. Significant loading from new snow has the potential to bring these weak layers to their tipping point and to create conditions for step-down avalanches.
Several persistent weak layers are buried in the snowpack. It still may be possible for humans to trigger them, or for storm slab avalanches to step down to them and form very large avalanches.
The weak snowpack base still exists in much of the region. Although the likelihood of triggering this layer decreases as it gets buried deeper, the consequence of triggering an avalanche on this layer would be severe. Best to give the layer some time to heal given the large amount of recent load applied to it.
Two layers that cause concern:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2tj3f","text":"In many parts of the region, with the exception potentially being near Coquihalla summit, recent storm snow may overly a touchy surface hoar layer found around treeline elevations in sheltered areas. This layer has produced large avalanches that have propagated far.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5reg9","text":"In the north half of the region, a weak layer is buried near the bottom of the snowpack. This layer has been responsible for recent large, destructive avalanches.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d0le5","text":"The likelihood of humans triggering these layers remains elevated due to the recent load applied to them. Storm slab avalanches could step down to these layers.
Two layers of surface hoar from late December are now buried 80-140 cm deep. Significant loading from new snow has the potential to bring these weak layers to their tipping point and to create conditions for step-down avalanches.
Deep persistent slab avalanches are becoming less likely to trigger. Conditions which may cause these deep layers to wake up and become active include: unusually high accumulations of new snow or wind-blown snow; rapid and prolonged warming; or from human-triggering in a thin, rocky start zone.
Persistent weak layers formed in mid to late December are buried 70-130 cm deep. These layers have produced large avalanches across aspects and elevations with incremental loading from new snow and wind.
Two layers of surface hoar from late December are now buried 60-140 cm deep. Recent significant loading from new snow has the potential to bring these weak layers to their tipping point and to create conditions for step-down avalanches.
Several persistent weak layers are buried in the snowpack. It might still be possible for humans to trigger them, or for storm or wind slab avalanches to step down to them and form very large avalanches.
The weak snowpack base still exists in much of the region. Although the likelihood of triggering this layer decreases as it gets buried deeper, the consequence of triggering an avalanche on this layer would be severe. Best to give the layer some time to heal given the large amount of recent load applied to it.
Two layers that cause concern:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a9lq9","text":"In many parts of the region, with the exception potentially being near Coquihalla summit, recent storm snow may overly a touchy surface hoar layer found around treeline elevations in sheltered areas. This layer has produced large avalanches that have propagated far.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5k9qb","text":"In the north half of the region, a weak layer is buried near the bottom of the snowpack. This layer has been responsible for recent large, destructive avalanches.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5vao7","text":"The likelihood of humans triggering these layers remains elevated due to the recent load applied to them. Storm slab avalanches could step down to these layers.
Large persistent slab avalanches are possible due to weak layers buried 30-50 cm below the surface. These layers of surface hoar, facets, and crusts have been reactive in recent snowpack tests and will become extra sensitive with the weight of the new snow. Conservative terrain choices are the best way to manage the uncertainties associated with this problem.
Two layers that cause concern:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c76t9","text":"In many parts of the region, with the exception potentially being near Coquihalla summit, recent storm snow may overly a touchy surface hoar layer found around treeline elevations in sheltered areas. This layer has produced large avalanches that have propagated far.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"au3os","text":"In the north half of the region, a weak layer is buried near the bottom of the snowpack. This layer has been responsible for recent large, destructive avalanches.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2q9tc","text":"The likelihood of humans triggering these layers remains elevated due to the recent load applied to them. Storm slab avalanches could step down to these layers.
Monitor changes in the most recent low density snow. It may be blown into unstable slabs in wind affected terrain or run as small dry loose avalanches in steep terrain.
Low density snow may be blown into unstable slabs on lee features at and above treeline, especially near ridgetops.
eep persistent slab avalanches are becoming less likely to trigger. Conditions which may cause these deep layers to wake up and become active include: unusually high accumulations of new snow or wind-blown snow; rapid and prolonged warming; or from human-triggering in a thin, rocky start zone.
Two layers of surface hoar from late December are now buried 80-140 cm deep. Large avalanches breaking on these layers reported Wednesday give clear evidence that these persistent weak layers are still a concern.","type":"unstyled","depth":0,"inlineS
Two layers of surface hoar from late December are now buried 60-140 cm deep. Recent large avalanches give clear evidence that these persistent weak layers are still a concern.","type":"unstyled","depth":0,"inlineS
Surface hoar layers formed in mid to late December are buried 70-130 cm deep. Recent large persistent slab avalanches give clear evidence that these weak layers are still a concern.
Several persistent weak layers are buried in the snowpack. It might still be possible for humans to trigger them, or for storm or wind slab avalanches to step down to them and form very large avalanches.
A concerning layer of surface hoar from late December is now buried 60-120 cm deep. This layer has produced many large avalanches across aspects and elevations, sometimes pulling back into low angle terrain. This problem warrants conservative margins with terrain decisions.
Monitor changes in the most recent low density snow. It may be blown into unstable slabs in wind affected terrain or run as small dry loose avalanches in steep terrain.
Monitor changes in surface conditions as you travel through terrain. It may be blown into unstable slabs in wind affected terrain or run as dry loose avalanches in steep terrain.
Triggering large deep persistent slab avalanches is a low likelihood / high consequence problem that is most likely in shallow rocky start zones.
A surface hoar layer that formed in late December is now buried 100 to 150 cm below the surface. At this depth it becomes more difficult to trigger, but steep open slopes should be approached with caution.
The weak snowpack base still exists in much of the region. Although the likelihood of triggering this layer decreases as it gets buried deeper, the consequence of triggering an avalanche on this layer would be severe. Best to give the layer some time to heal given the large amount of recent load applied to it.
Low density snow may be blown into unstable slabs on lee features at and above treeline, especially near ridgetops.
Several persistent weak layers are buried in the snowpack and may still possible for humans to trigger on isolated slopes.
Several persistent weak layers are buried in the snowpack. It might still be possible for humans to trigger them, or for storm or wind slab avalanches to step down to them and form very large avalanches.
The weak snowpack base still exists in much of the region. Although the likelihood of triggering this layer has substantially decreased, the consequence triggering an avalanche on this layer would be severe.
Large persistent slab avalanches are possible due to weak layers buried 30-50 cm below the surface. These layers of surface hoar, facets, and crusts have been reactive in recent snowpack tests and will become extra sensitive with the weight of the new snow. Conservative terrain choices are the best way to manage the uncertainties associated with this problem.
Triggering large deep persistent slab avalanches is a low likelihood / high consequence problem that is most likely in shallow rocky start zones
Triggering large deep persistent slab avalanches is a low likelihood / high consequence problem in shallow rocky start zones.
The weak snowpack base still exists in much of the region. Although the likelihood of triggering this layer decreases as it gets buried deeper, the consequence of triggering an avalanche on this layer would be severe. Best to give the layer some time to heal given the large amount of recent load applied to it.
Two layers that cause concern:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g3u","text":"In many parts of the region, with the exception potentially being near Coquihalla summit, recent storm snow may overly a touchy surface hoar layer found around treeline elevations in sheltered areas. This layer has produced large avalanches that have propagated far.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f1g68","text":"In the north half of the region, a weak layer is buried near the bottom of the snowpack. This layer has been responsible for recent large, destructive avalanches.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cvopg","text":"The likelihood of humans triggering these layers remains elevated due to the recent load applied to them. Storm slab avalanches could step down to these layers.
The weak snowpack base still exists in much of the region. Although the likelihood of triggering this layer decreases as it gets buried deeper, the consequence of triggering an avalanche on this layer would be severe. Best to give the layer some time to heal given the large amount of recent load applied to it.
Two layers that cause concern:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1urn8","text":"In many parts of the region, with the exception potentially being near Coquihalla summit, recent storm snow may overly a touchy surface hoar layer found around treeline elevations in sheltered areas. This layer has produced large avalanches that have propagated far.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ek33a","text":"In the north half of the region, a weak layer is buried near the bottom of the snowpack. This layer has been responsible for recent large, destructive avalanches.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"51s55","text":"The likelihood of humans triggering these layers remains elevated due to the recent load applied to them. Storm slab avalanches could step down to these layers.
Sluffing in steep terrain.
Fresh accumulations of low density snow will be reactive to riders in steep terrain.
Monitor changes in the most recent low density snow. It may be blown into unstable slabs in wind affected terrain or run as small dry loose avalanches in steep terrain.
Several persistent weak layers are buried in the snowpack. It might still be possible for humans to trigger them, or for storm or wind slab avalanches to step down to them and form very large avalanches.
Several persistent weak layers are buried in the snowpack. It might still be possible for humans to trigger them, or for storm or wind slab avalanches to step down to them and form very large avalanches.
Several persistent weak layers are buried in the snowpack. It is possible for humans to trigger them, or for storm or wind slab avalanches to step down to them and form very large avalanches. Recent avalanche observations on deeply buried weak layers are on an increasing trend in our region.
Two layers that cause concern in the northern part of the region include:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ekhac","text":"A 90-150 cm-deep weak layer of surface hoar layer found around treeline elevations in sheltered areas. It may still be triggered by a person on steep, sheltered openings around treeline.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d559c","text":"A weak layer buried near the bottom of the snowpack which continues to produce sporadic very large avalanches. This layer is most likely to be triggered in steep, thin, rocky areas in the alpine or upper treeline.","type":"u
Triggering large deep persistent slab avalanches is a low likelihood / high consequence problem that is most likely in shallow rocky start zones.
Several persistent weak layers are buried in the snowpack. It is possible for humans to trigger them, or for storm or wind slab avalanches to step down to them and form very large avalanches. Recent avalanche observations on deeply buried weak layers are on an increasing trend in our region.
Watch for areas where the low density snow has been blown into into unstable wind slabs.
Several persistent weak layers are buried in the snowpack. It is possible for humans to trigger them, or for storm or wind slab avalanches to step down to them and form very large avalanches. Recent avalanche observations on deeply buried weak layers are on an increasing trend in our region.
The weak snowpack base still exists in much of the region. Although the likelihood of triggering this layer has substantially decreased, the consequence triggering an avalanche on this layer would be severe. Its most likely trigger points will be in steep, shallow, rocky areas where this layer exists closer to triggering forces on the surface.
Two layers that cause concern:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"clsa9","text":"In many parts of the region, with the exception potentially being near Coquihalla summit, settling storm snow may overly a surface hoar layer found around treeline elevations in sheltered areas.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5nt6r","text":"In the north half of the region, a weak layer is buried near the bottom of the snowpack which continues to produce sporadic very large avalanches.","type":"u
The weak snowpack base still exists in much of the region. Although the likelihood of triggering this layer has substantially decreased, the consequence triggering an avalanche on this layer would be severe.
Triggering large deep persistent slab avalanches is a low likelihood / high consequence problem that is most likely in shallow rocky start zones.
Triggering large deep persistent slab avalanches is a low likelihood but high consequence problem that is most likely in shallow, rocky start zones. The likelihood of triggering deeper weak layers may increase in the coming days as the air temperature rises.
A layer of surface hoar is buried 30 to 100 cm deep. There is uncertainty on whether the layer will reawaken during the air temperature rise. Use added caution during periods of warming, particularly in clearings around treeline.
Warm temperatures and sunshine will destabilize surface layers and promote wet loose avalanche activity on Monday. This problem will be most reactive on steep, sun exposed slopes and may initiate naturally or with a human trigger.
Two layers that cause concern in the northern part of the region include:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3u90p","text":"A 90-150 cm-deep weak layer of surface hoar layer found around treeline elevations in sheltered areas. It may still be triggered by a person in steep, sheltered openings around treeline.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9o2uj","text":"A weak layer buried near the bottom of the snowpack which continues to produce sporadic very large avalanches. This layer is most likely to be triggered in steep, thin, rocky areas in the alpine or upper treeline.","type":"u
Large persistent slab avalanches are possible due to weak layers buried 30-50 cm below the surface. These layers of surface hoar, facets, and crusts have been reactive in recent snowpack tests and will become extra sensitive with the weight of the new snow. Conservative terrain choices are the best way to manage the uncertainties associated with this problem.
A layer of surface hoar is buried 30 to 100 cm deep. There is uncertainty on whether the layer will reawaken during the air temperature rise. Use added caution during periods of warming, particularly in clearings around treeline.
Fresh wind slabs may begin to form Friday as winds begin to crank near ridgecrest out of the northwest.  Old wind slabs formed over the last week may also remain sensitive to human triggering, especially near ridge crest.
Reports of avalanches on this layer have been sparse but it has produced some very large natural avalanches that seem to be most prevalent on alpine lee and cross loaded slopes. The previous storm followed by a wind event forecast for Wednesday will be a good test for the mid November crust that lurks at the base of the snowpack.
Large persistent slab avalanches are possible due to weak layers buried 30-50 cm below the surface. These layers of surface hoar, facets, and crusts have been reactive in recent snowpack tests and will become extra sensitive with the weight of the new snow. Conservative terrain choices are the best way to manage the uncertainties associated with this problem.
Triggering large, deep persistent slab avalanches is a low likelihood but high consequence problem that is most likely in shallow, rocky start zones.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b3l76","text":"
Several persistent weak layers are buried in the snowpack. It is possible for humans to trigger them, or for smaller avalanches to step down, resulting in very large avalanches.
Two layers that cause concern in the northern part of the region include:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"68t1r","text":"A 90-150 cm deep weak layer of surface hoar layer found around treeline elevations in sheltered areas. It may still be triggered by a person in steep, sheltered openings around treeline.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"aj8va","text":"A weak layer buried near the bottom of the snowpack which continues to produce sporadic very large avalanches. This layer is most likely to be triggered in steep, thin, rocky areas in the alpine or upper treeline.","type":"u
Weak layers in the northern part of the region will be stressed by the storm, increasing the likelihood of large deep persistent slab avalanches. Two layers have been a concern in the north including a 100 cm deep surface hoar layer in sheltered areas around treeline and weak snow near the bottom of the snowpack in shallow rocky start zones at higher elevations.
wo layers that cause concern in the northern part of the region include:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dn3v3","text":"A 100 cm deep weak layer of surface hoar layer found around treeline elevations in sheltered areas. It may still be triggered by a person in steep, sheltered openings around treeline.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c3j8a","text":"A weak layer near the bottom of the snowpack which continues to produce sporadic very large avalanches. This layer is most likely to be triggered in steep, thin, rocky areas in the alpine or upper treeline.","type":"u
As temperatures trend warmer and freezing levels rise, there is potential for the deep basal weak layers to become active. Deep persistent slab avalanches on these layers are most likely to be triggered from shallow snowpack areas near rocky outcroppings.
Triggering large, deep persistent slab avalanches is a low likelihood but high consequence problem that is most likely in shallow, rocky start zones.
These are still on the radar. It's worth digging or probing to inspect it. Large triggers are also worth considering, if the bottom layer is disturbed it will be a very big avalanche.
These are still on the radar. It's worth digging or probing to inspect it. Large triggers are also worth considering, if the bottom layer is disturbed it will be a very big avalanche.
Triggering large, deep persistent slab avalanches is a low likelihood but high consequence problem that is most likely to trigger in shallow, rocky start zones.
Large cornice growth has been noted and reactive to skiers, naturally failing cornices have triggered storm slabs on slopes below.
We suspect that the warm temperatures are gradually helping the basal weak layers to bond, and the snowpack to strengthen. Deep persistent slab avalanches on these layers are unlikely but may still be triggered from shallow snowpack areas near rocky outcroppings.
Weak layers in the northern part of the region will be stressed by the storm, increasing the likelihood of large deep persistent slab avalanches. Two layers have been a concern in the north including a 100 cm deep surface hoar layer in sheltered areas around treeline and weak, facetted snow near the bottom of the snowpack in shallow rocky start zones at higher elevations.
As temperatures trend warmer and freezing levels rise, there is potential for the deep basal weak layers to become active. Deep persistent slab avalanches on these layers are most likely to be triggered from shallow snowpack areas near rocky outcroppings.
Lingering wind slabs from recent moderate to strong northeast winds may still be reactive to human triggering.
Triggering large, deep persistent slab avalanches is a low likelihood but high consequence problem that is most likely to trigger in shallow, rocky start zones.
Weak layers in the northern part of the region were stressed by the recent storm and between Thursday and Friday deep persistent slab avalanches failed naturally and from skier traffic. Two layers have been a concern in the north including a 100 cm deep surface hoar layer in sheltered areas around treeline and weak, facetted snow near the bottom of the snowpack in shallow rocky start zones at higher elevations.
Between Thursday and Saturday, in the northern part of the forecast region, weak layers at the bottom of the snowpack were stressed by the recent storm snow, and resulted in very large deep persistent slab avalanches failing naturally and from skier traffic. Two layers have been a concern in the north including a 100 cm deep surface hoar layer in sheltered areas around treeline and weak, facetted snow near the bottom of the snowpack in shallow rocky start zones at higher elevations. Ongoing loading from snow and wind will continue to stress weaknesses at the bottom of the snowpack.
We suspect that mild temperatures are gradually helping the basal weak layers to bond and the snowpack to strengthen. Deep persistent slab avalanches on these layers are unlikely but may still be triggered from shallow snowpack areas near rocky outcroppings.
Triggering large, deep persistent slab avalanches is a relatively low likelihood but high consequence problem that is most likely to trigger in shallow, rocky start zones. A small wind slab release could be a sufficient trigger.
Mild temperatures are helping the basal weak layers to adjust and the snowpack to strengthen. Deep persistent slab avalanches on these layers are unlikely but may still be triggered from shallow snowpack areas near rocky outcroppings.
Mild temperatures are helping the basal weak layers to adjust and the snowpack to strengthen. Deep persistent slab avalanches on these layers are unlikely but may still be triggered from shallow snowpack areas near rocky outcroppings.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":94,"length":20,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK"
Large cornice growth has been noted and reactive to skiers, more snow and wind will continue to build cornices.
A layer of weak, faceted snow from the previous cold snap is now buried 60-100 cm deep. This layer proved reactive during last week's storm cycle, but whether this layer will persist as a problem interface is uncertain. This persistent weak layer will likely be more problematic in shallower areas in the region where slab depths are in the 40-80 cm range and where the facets may be more pronounced.
It is worth to dig a pit to ground to see the severity of this basal layer.
Triggering deep persistent slab avalanches is a relatively low likelihood but high consequence problem that is most likely in shallow, rocky start zones. Smaller wind slab avalanches could step down to this deeper layer, resulting in a very large avalanche.
Between Thursday and Saturday, in the northern part of the forecast region, weak layers at the bottom of the snowpack were stressed by the recent storm snow, and resulted in very large deep persistent slab avalanches failing naturally and from skier traffic. Two layers have been a concern in the north including a 100 cm deep surface hoar layer in sheltered areas around treeline and weak, facetted snow near the bottom of the snowpack in shallow rocky start zones at higher elevations. Ongoing loading from snow and wind will continue to stress weaknesses at the bottom of the snowpack.
It is worth to dig a pit to ground to see the severity of this basal layer.
A layer of weak, faceted snow from the previous cold snap is now buried 50-120 cm deep. This persistent weak layer will likely be more problematic in shallower areas in the region where slab depths are in the 40-80 cm range and where the facets may be more pronounced.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":93,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
Triggering deep persistent slab avalanches is a relatively low likelihood but high consequence problem that is most likely in shallow, rocky start zones. Smaller wind slab avalanches could step down to this deeper layer, resulting in a very large avalanche.
A layer of weak, faceted snow from the previous cold snap is now buried 70-140 cm deep. The incoming snowfall and wind will add a rapid load this persistent weak layer, potentially bringing it to its tipping point. Easier-to-trigger avalanches in the storm snow have the potential to step-down to this layer resulting in very large, destructive avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":146,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
A layer of weak, faceted snow from the January cold snap is now buried 40-70 cm deep. The incoming snowfall and wind is expected to load this persistent weak layer, potentially bringing it to its tipping point.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":142,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
It is worth to dig a pit to ground to see the severity of this basal layer.  If it hasnt yet slid, treat it with a high degree of suspicion and respect.  If it goes, it will be big.
Triggering deep persistent slab avalanches is a relatively low likelihood but high consequence problem that is most likely in shallow, rocky start zones. Smaller wind slab avalanches could step down to this deeper layer, resulting in a very large avalanche.
Mild temperatures, strong winds and new snow have been a recipe for significant cornice growth recently. The new growth is still brittle and weak and will be especially sensitive to seeing the sun for the first time.
Ongoing loading by snowfall and wind has overwhelmed deep weak layers at the bottom of the snowpack. Reports of very large (size 3) deep persistent avalanches have been steadily coming in over the past week between from the north half of the region. Avalanches on these layers are most likely to be human triggered from areas of shallow snow cover near rocky outcroppings. These layers do not pose an avalanche problem in the south half of the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":132,"length":26,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK"
It is worth to dig a pit to ground to see the severity of this basal layer.  If it hasnt yet slid, treat it with a high degree of suspicion and respect.  If it goes, it will be big.
Mild temperatures, strong winds and new snow have been a recipe for significant cornice growth recently.
Triggering deep persistent slab avalanches is a relatively low likelihood but high consequence problem that is most likely in shallow, rocky start zones. Smaller wind slab avalanches could step down to this deeper layer, resulting in a very large avalanche.
A layer of weak, faceted snow from the January cold snap is now buried 40-70 cm deep. The incoming snowfall and wind is expected to load this persistent weak layer, potentially bringing it to its tipping point.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":142,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
A layer of weak, faceted snow from the previous cold snap is now buried 70-140 cm deep. The incoming snowfall and wind will add a rapid load this persistent weak layer, potentially bringing it to its tipping point. Easier-to-trigger avalanches in the storm snow have the potential to step-down to this layer resulting in very large, destructive avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":146,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
Facetted, weak snow at the base of the snowpack is a cause for concern with forecasted weather. Rapid loading from new snow and wind or rapid warming from rising freezing levels or rain can stress previously inactive weak layers in the snowpack. If this layer \"wakes up\" with increasing load and temperatures, it will produce large and destructive avalanches.
A layer of weak, faceted snow from the January cold snap is now buried 40-70 cm deep. The incoming snowfall and wind is expected to load this persistent weak layer, potentially bringing it to its tipping point.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":142,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
Ongoing loading by snowfall and wind has overwhelmed deep weak layers at the bottom of the snowpack. Reports of very large (size 3) deep persistent avalanches have been steadily coming in over the past week from the north half of the region. Avalanches on these layers are most likely to be human triggered from areas of shallow snow cover near rocky outcroppings. These layers do not pose an avalanche problem in the south half of the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":132,"length":26,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK"
Facetted, weak snow at the base of the snowpack is a cause for concern with forecasted weather. Rapid loading from new snow and wind or rapid warming from rising freezing levels or rain can stress previously inactive weak layers in the snowpack. If this layer \"wakes up\" with increasing load and temperatures, it will produce large and destructive avalanches.
A layer of weak, faceted snow from the January cold snap is now buried about 50-80 cm deep. Avalanches in surface snow layers currently carry a risk of stepping down to this weak layer to create a larger, more destructive avalanche.
A layer of weak, faceted snow from the previous cold snap is now buried 70-140 cm deep. Snowfall and wind are adding a rapid load this persistent weak layer, potentially bringing it to its tipping point. Smaller storm slab avalanches have the potential to step-down to this layer resulting in very large, destructive avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":135,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
Large triggers are a concern. Cornices, or other avalanches could wake this layer up.
Significant loading from recent snow, rain and ongoing wind weigh heavily on deep weaknesses near the bottom of the snowpack at alpine and treeline elevations. Failure of these weak layers has produced very large, destructive avalanches. Potential exists for these avalanches to run to valley bottom; hence, this problem poses a hazard to all elevations. These layers do not pose an avalanche problem in the south half of the region.
Significant new loads from snowfall, rain and storm slab avalanche activity Friday will likely overwhelm deep basal weak layers and produce very large, destructive avalanches. These layers do not pose an avalanche problem in the south half of the region.
The combination of rapid snowfall, strong winds, and warm temperatures is packing a powerful punch that has potential to wake up deeper layers buried in the snowpack. Touchy storm slab avalanches could step down to this persistent slab problem resulting in a very large avalanches on Saturday.
Rapid snowfall, ongoing wind transport, and warm temperatures will test the weak snow buried at the bottom of the snowpack. Triggering deep persistent slab avalanches is most likely in snowpack areas that transition from thick to thin, like in shallow, rocky start zones. Touchy storm slab avalanches could step down to this deeper layer, resulting in a very large avalanches on Saturday.
The combination of rapid snowfall, strong winds, and warm temperatures is packing a powerful punch that has potential to wake up deeper layers buried in the snowpack. Touchy storm slab avalanches could step down to these persistent weak layers resulting in a very large avalanches on Saturday.
The combination of rapid snowfall, strong winds, and warm temperatures is packing a powerful punch that has potential to wake up deeper layers buried in the snowpack. Touchy storm slab avalanches could step down to these persistent weak layers resulting in a very large avalanches on Saturday.
A layer of weak, faceted snow from the previous cold snap is now buried 70-140 cm deep. Snowfall and wind are adding a rapid load this persistent weak layer, potentially bringing it to its tipping point. Smaller storm slab avalanches have the potential to step-down to this layer resulting in very large, destructive avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":135,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
Facetted, weak snow at the base of the snowpack is a cause for concern with forecasted weather. Rapid loading from new snow and wind or rapid warming from rising freezing levels or rain can stress previously inactive weak layers in the snowpack. If this layer \"wakes up\" with increasing load and temperatures, it will produce large and destructive avalanches.
A layer of weak, faceted snow from the January cold snap is now buried 40-70 cm deep. The continued snowfall and wind continues to load this persistent weak layer, potentially bringing it to its tipping point.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":141,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
Facetted, weak snow at the base of the snowpack is a cause for concern with forecasted weather. Rapid loading from new snow and wind or rapid warming from rising freezing levels or rain can stress previously inactive weak layers in the snowpack. If this layer \"wakes up\" with increasing load and temperatures, it will produce large and destructive avalanches.
As recently as Tuesday, explosives testing continues to periodically trigger a weak layer of snow at the bottom of the snowpack. Significant new loads from snowfall and rain will weigh heavy on these deep instabilities. Especially where rain saturates down to the basal weak layers, large slab avalanches can be expected Friday.
Rapid snowfall, ongoing wind transport, and fluctuating temperatures are testing the weak snow buried at the bottom of the snowpack. Triggering deep persistent slab avalanches is more likely in snowpack areas that transition from thick to thin, like in shallow, rocky start zones. Easier-to-trigger storm slab avalanches or cornice falls could step down to this deeper layer, resulting in a very large avalanches.
Significant loading from ongoing from snowfall, rain and storm slab avalanche activity Saturday will likely overwhelm deep basal weak layers and produce very large, destructive avalanches. These layers do not pose an avalanche problem in the south half of the region.
Loose avalanches are likely Saturday with clear skies, especially on steep south facing features.
Cornice grown has been noted in this region along exposed ridgelines, particularly on northeast aspects.
This is a combination of fresh slabs, and older buried slabs fro the last week.
Mild temperatures, strong winds and new snow have been a recipe for significant cornice growth. Recent explosive work has produced numerous cornice results up to size 2.5.
A layer of weak, sugary facets persists at the bottom of the snowpack. Triggering deep persistent slab avalanches is more likely in snowpack areas that transition from thick to thin, like in shallow, rocky start zones. Easier-to-trigger wind slab avalanches or cornice falls could step down to this deeper layer, resulting in very large avalanches.
The overnight change in wind direction from southwest to northwest may have loaded new features which may be sensitive to human triggering.
Isolated very large persistent slab avalanches during recent storm cycles have shown rapid loading can produce very large and destructive avalanches that fail much deeper than our storm snow depth. With another strong storm passing through the region, similar isolated persistent slab activity may occur. Particularly concerning areas include Kispiox and further north, as well as the west of the region.
A layer of weak, sugary facets persists at the bottom of the snowpack at higher elevations. Steep, rocky alpine features where the snowpack transitions from thick to thin are the likely trigger points for this deep persistent slab problem. Easier-to-trigger wind slab avalanches or cornice falls could step down to this layer, resulting in very large and destructive avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":210,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
This is the bottom 40cm of the snow pack (November crust/facet combo). There is potential for a surface wind slab to step down to this weak layer creating a very large slide.
This is the bottom 40cm of the snow pack (November crust/facet combo). There is potential for a surface wind slab to step down to this weak layer creating a very large slide.
Wind changing in direction from southwest to northwest has loaded new features which may be sensitive to human triggering.
Strong to extreme winds during last weekend's storm have created thick deposits of wind loaded snow in lee terrain features.
Size 2-3 storm slab avalanches have been observed since the storm. Storm slabs will remain especially sensitive where the wind has deposited recent snow into deeply loaded pockets in lee features.
A layer of weak, faceted snow from the January cold snap is now buried about 100 cm deep. Avalanches in surface snow layers currently carry a risk of stepping down to this weak layer to create a larger, more destructive avalanche.
Strong to extreme winds during last weekend's storm have created thick deposits of wind loaded snow in lee terrain features.
Isolated very large persistent slab avalanches during recent storm cycles have shown rapid loading can produce very large and destructive avalanches that fail much deeper than our storm snow depth. With another strong storm passing through the region, similar isolated persistent slab activity may occur.
A layer of weak, sugary facets persists at the bottom of the snowpack. Areas that may still harbor this deep persistent slab problem are slopes where the snowpack transitions from thick to thin, like in shallow, rocky alpine start zones. Easier-to-trigger wind slab avalanches or cornice falls could step down to this deeper layer, resulting in very large avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":104,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Wind changing in direction from southwest to northwest has loaded new features which may be sensitive to human triggering.
A layer of weak, sugary facets persists at the bottom of the snowpack at higher elevations. Steep, rocky alpine features where the snowpack transitions from thick to thin are the likely trigger points for this deep persistent slab problem. Easier-to-trigger wind slab avalanches or cornice falls could step down to this layer, resulting in very large and destructive avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":210,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Isolated very large persistent slab avalanches that ran during the recent storm cycle have shown that rapid loading of the snowpack does have potential to produce destructive avalanches that fail much deeper than our storm snow depth. With another storm pulse taking affecting the region on Tuesday, similar isolated persistent slab activity may occur. Particularly concerning areas include Kispiox and further north, as well as the west of the region.
Isolated very large persistent slab avalanches that ran during the recent storm cycle have shown that rapid loading of the snowpack does have potential to produce very large and destructive avalanches that fail much deeper than our storm snow depth. With another strong storm pulse taking affecting the region on Tuesday, similar isolated persistent slab activity may occur.
A layer of weak, sugary facets persists at the bottom of the snowpack. Areas that may still harbor this deep persistent slab problem are slopes where the snowpack transitions from thick to thin, like in shallow, rocky alpine start zones. Easier-to-trigger wind slab avalanches or cornice falls could step down to this deeper layer, resulting in very large avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":104,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
With a warm wet storm the snowpack will turn upside-down creating a widespread storm slab problem. Strong winds will build windslabs at higher elevations where the snow is dry enough to be blown into deeper slabby pillows.
A layer of weak, sugary facets persists at the bottom of the snowpack at higher elevations. Steep, rocky alpine features where the snowpack transitions from thick to thin are the likely trigger points for this deep persistent slab problem. Easier-to-trigger wind slab avalanches or cornice falls could step down to this layer, resulting in very large and destructive avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":210,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Recent storms have agitated buried weak layers, resulting in some very large persistent slab avalanches. Although these avalanches are only possible in isolated locations, the consequences are severe. Recent areas of concern have been around Kispiox and Hazelton, but any large steep slope should be approached with caution.
A layer of weak, sugary facets persists at the bottom of the snowpack. Areas where the snowpack transitions from thick to thin may still harbor this deep persistent slab problem, like shallow, rocky alpine start zones. Easier-to-trigger wind slab avalanches or cornice falls could step down to this deeper layer, resulting in very large avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":149,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Cornices have become noticeably larger and more overhanging in the past week.
Although the likelihood of triggering a deep persistent slab avalanche has reduced, doing so would result in a large and destructive avalanche. These layers do not pose an avalanche problem in the south half of the region.
Recent storm snow is gradually gaining strength, but may remain reactive on steep wind loaded and sun-exposed slopes.
This is the bottom 40cm of the snow pack (November crust/facet combo). There is potential for a surface wind slab to step down to this weak layer creating a very large slide.
Although the likelihood of triggering a deep persistent slab avalanche has reduced, doing so would result in a large and destructive avalanche. These layers do not pose an avalanche problem in the south half of the region.
Recent storm snow is gradually gaining strength, but may remain reactive on steep wind loaded and sun-exposed slopes. Watch for the formation of fresh wind slabs as strong northwest winds begin to blow Sunday.
Although the likelihood of triggering a deep persistent slab avalanche has reduced, doing so would result in a large and destructive avalanche. These layers do not pose an avalanche problem in the south half of the region.
A layer of weak, sugary facets persists at the bottom of the snowpack. Areas where the snowpack transitions from thick to thin may still harbor this deep persistent slab problem, like shallow, rocky alpine start zones. Easier-to-trigger wind slab avalanches or cornice falls could step down to this deeper layer, resulting in very large avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":149,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Recent storm snow is gradually gaining strength, but may remain reactive on steep wind loaded and sun-exposed slopes.
Although the likelihood of triggering a deep persistent slab avalanche has reduced, doing so would result in a large and destructive avalanche. These layers do not pose an avalanche problem in the south half of the region.
Wind slabs have formed above a widespread crust, natural activity has slowed down, but human triggering may remain possible on steep crossloaded or leeward features.
Wind slabs have formed above a widespread crust, natural activity has slowed down, but human triggering may remain possible, especially near ridge crest.
This is a classic \"low probability, high consequence\" problem. While it is difficult to trigger, resulting avalanches will be very large. Use caution in shallow snowpack areas where triggering is more of a concern.
A layer of weak, sugary facets persists at the bottom of the snowpack at higher elevations. Steep, rocky alpine features where the snowpack transitions from thick to thin are the likely trigger points for this deep persistent slab problem. Easier-to-trigger wind slab avalanches or cornice falls could step down to this layer, resulting in very large and destructive avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":210,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Recent storm snow is gradually gaining strength, but may remain reactive on steep wind loaded and sun-exposed slopes. Watch for the formation of fresh wind slabs as strong wind generally out of the west/southwest continues Monday.
Previous winds were from from the southwest. More recent winds are blowing from the northwest. Expect wind slabs to have formed on a variety of aspects in exposed locations.
Watch for the formation of fresh wind slabs as strong wind generally out of the west, southwest and northwest continues.
Watch for the formation of fresh wind slabs on Thursday as light snowfall combines with strong to extreme southwest winds.
The weak basal layers are still a concern. An avalanche that occurred in the past 24 hours was a slide that stepped down to the basal layers and involved the entire snowpack.
A layer of weak, sugary facets persists at the bottom of the snowpack at higher elevations. Steep, rocky alpine features where the snowpack transitions from thick to thin are the likely trigger points for this deep persistent slab problem. Easier-to-trigger wind slab avalanches or cornice falls could step down to this layer, resulting in very large and destructive avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":210,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
The weak basal layers are still a concern. An avalanche that occurred in the past 24 hours was a slide that stepped down to the basal layers and involved the entire snowpack.
Expect avalanches to become easily triggered as storm snow amounts increase, particularly in wind-affected areas.
Large triggers are a concern. Cornices, or other avalanches could wake this layer up.
A layer of weak, sugary facets persists at the bottom of the snowpack at higher elevations. Steep, rocky alpine features where the snowpack transitions from thick to thin are the likely trigger points for this deep persistent slab problem. Easier-to-trigger wind slab avalanches or cornice falls could step down to this layer, resulting in very large and destructive avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":210,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
This layer produced a very large avalanche on Sunday, more details here.  When considering terrain you need to be thinking about the potential for deep avalanches. The most likely trigger points are thin rocky areas near ridge crest.  Rock outcroppings in exposed terrain should be avoided.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":67,"length":4,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanc
Many very large, deep and destructive avalanches have been human triggered and have ran naturally since February 3rd. As visibility improves and the days grow longer there is a natural tendency to push into new terrain, but we need to recognize that places that haven't seen a lot of traffic may actually be more likely to produce these monster avalanches than places with lots of tracks. Regardless, any alpine feature that has not yet slid needs to be treated as suspect. The frequency of these avalanches seems to be picking up and this problem isn't expected to go away anytime soon.
There are two deeply buried weak layers that are suspected of being the cause of sporadic very large avalanches releasing in the past 10 days. A layer of buried surface hoar may persist in the south of the region at and below treeline. A layer of facets near the base of the snowpack can be found throughout the region in the alpine. Although it is unlikely to trigger these layers, doing so would result in a very large and destructive avalanche.
These will likely trigger slabs below the ridges and possibly trigger the deeper layers. If this happens, expect a very large avalanche.
There are two deeply buried weak layers that are suspected of being the cause of sporadic very large avalanches releasing in the past 10 days. A layer of buried surface hoar may persist in the south of the region at and below treeline. A layer of facets near the base of the snowpack can be found throughout the region in the alpine. Although it is unlikely to trigger these layers, doing so would result in a very large and destructive avalanche.
A shift to northwest winds and an ample supply of loose surface snow is likely to expand wind slab distribution across all aspects. Wind slab releases around steep, rocky features at ridgecrest may carry the risk of triggering a deeper weak layer.
Expect avalanches to become easily triggered as storm snow amounts increase, particularly in wind-affected areas.
New snow amounts and consistently elevated winds are likely to form a fresh array of wind slabs to manage on Friday. Since accumulations are expected to be light, danger should be focused toward crossloaded slopes or leeward features at ridgecrest that see the most pronounced wind loading.
A layer of weak, sugary facets persists at the bottom of the snowpack at higher elevations. Steep, rocky alpine features where the snowpack transitions from thick to thin are the likely trigger points for this deep persistent slab problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":210,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
A concerning number of large, deep and destructive avalanches have been human triggered and have ran naturally on deeply buried weak layers in the last two weeks. Large alpine features that have not yet slid need to be treated as suspect, especially if they have seen significant recent wind loading. Wind slab or cornice releases are likely triggers for this problem. Human triggering is most likely in shallow, rocky areas where the snowpack transitions from thick to thin.
The weak basal layers are still a concern. An avalanche that occurred in the past 24 hours was a slide that stepped down to the basal layers and involved the entire snowpack.
Our weak basal snowpack has produced sporadic very large avalanches - both natural and human triggered - in the past couple of weeks. More details here and here. It remains important to consider the potential for deep avalanches from suspect features in the region. The most likely trigger points are thin rocky areas near ridge crest.  Rock outcroppings in exposed terrain should be avoided.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":147,"length":4,"key":0},{"offset":156,"length":4,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/map?panel=mountain-information-network-submissions/06ada94d-20c8-413b-a0b9-b43a5f8c7ee2"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://w
South-facing aspects are expected to warm with strong input from the sun. Be mindful of cornices and sun impacting hazards above you.
Natural cornice falls are a feature of recent reports that will likely increase with sun exposure on Sunday. Cornice falls are dangerous in their own right but they may also trigger avalanches on slopes they impact.
Weak snow at the bottom of the snowpack continues to pose a  deep persistent slab avalanche problem. Steep rocky alpine features are the most likely trigger points. Also use extra caution if big alpine slopes are getting hit by the sun.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":61,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
A concerning number of large, deep and destructive avalanches have been human triggered and have ran naturally on deeply buried weak layers in the last two weeks. Large alpine features that have not yet slid need to be treated as suspect, especially if they have seen significant recent wind loading. Wind slab or cornice releases are likely triggers for this problem. Human triggering is most likely in shallow, rocky areas where the snowpack transitions from thick to thin.
Sun-exposed slopes will warm up with daytime heat. Wet loose avalanches could sweep you off your feet and push you into terrain traps, such as gullies or cliffs.
Sun-exposed slopes will warm up with daytime heat. Wet loose avalanches could sweep you off your feet and push you into terrain traps, such as gullies or cliffs. Cornices will also weaken during the day. Stand well back of them on ridges and avoid travelling beneath them.
Natural cornice falls have been reported recently and will likely increase with sun exposure on Monday. Cornice falls are dangerous in their own right but they may also trigger avalanches on slopes they impact.
During the first half of the month there were many very large and destructive avalanches failing on deeply buried weak layers near the bottom of the snowpack. The bulk of this activity occurred above treeline on north through east facing aspects, but any large alpine slopes that have not yet avalanched should be treated as suspect. Wind slab or cornice releases are likely triggers for this problem. Human triggering is most likely in shallow, rocky areas where the snowpack transitions from thick to thin.
The weak basal layers are still a concern.
Weak snow at the bottom of the snowpack continues to pose a  deep persistent slab avalanche problem. Steep rocky alpine features are the most likely trigger points. Use extra caution if big alpine slopes are getting hit by the sun.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":61,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
A concerning number of large, deep and destructive avalanches have been human triggered and have ran naturally on deeply buried weak layers in the last two weeks. Large alpine features that have not yet slid need to be treated as suspect, especially if they have seen significant recent wind loading. Wind slab or cornice releases are likely triggers for this problem. Human triggering is most likely in shallow, rocky areas where the snowpack transitions from thick to thin.
Weak snow at the bottom of the snowpack continues to pose a  deep persistent slab avalanche problem. Steep rocky alpine features are the most likely trigger points. Use extra caution if big alpine slopes are getting hit by the sun.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":61,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
These will likely trigger slabs below the ridges and possibly trigger the deeper layers. If this happens, expect a very large avalanche.
Weak snow at the bottom of the snowpack continues to pose a  deep persistent slab avalanche problem. Steep rocky alpine features are the most likely trigger points. Use extra caution if big alpine slopes are getting hit by the sun.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":61,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
South-facing aspects are expected to warm with strong input from the sun. Be mindful of cornices and sun impacting hazards above you.
Natural cornice falls have been reported recently and will likely continue as the sun comes out over the next few days. Cornice falls are dangerous in their own right but they may also trigger avalanches on slopes they impact.
Cornices have been reported to be especially large. Cornice collapses become likely in warmer temperatures and/or when the sun is out. The weight of a large cornice dropping could be sufficient to trigger a large avalanche on the slope below.
Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. The bulk of events occur during periods of rapid loading by new snow or wind, or are triggered by very large loads (wind slab avalanche, cornice or snowcat).
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. The most recent activity has been focused around the Golden area, but wind scoured, rocky, shallow terrain (often with a \"salt & pepper look) throughout the region can be suspect. Avoid big alpine slopes that are threatened by cornices overhead.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a buried weak layer lingers at the base of the snowpack. The most likely place to trigger this layer is in shallow and rocky terrain. This layer has been quiet, with no reports of avalanches on it since early February. There is potential for it to wake up with rapid warming or significant loading by new snow.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. The most recent activity has been focused around the Golden area, but steep, rocky, shallow terrain throughout the region should be treated with caution. Avoid big alpine slopes that are threatened by cornices overhead.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Sun-exposed slopes will warm up with daytime heat. Wet loose avalanches could sweep you off your feet and push you into terrain traps, such as gullies or cliffs. Cornices will also weaken during the day. Stand well back of them on ridges and avoid travelling beneath them.
Natural cornice falls have been reported recently and will likely continue as the sun comes out over the next few days. Cornice falls are dangerous in their own right but they may also trigger avalanches on slopes they impact.
Weak snow at the bottom of the snowpack hasn't gone away unfortunately.  As temperatures warm and the strong sun comes out over the next few days we need to be thinking about the potential for large destructive avalanches. Cornice failures become more likely during these kinds of conditions and a failing cornice could be the perfect trigger for the deep persistent slab. Human triggering would be most likley around steep rocky terrain features, or anywhere the snowpack is thin and weak.
Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. The bulk of events occur during periods of rapid loading by new snow or wind, or are triggered by very large loads (wind slab avalanche, cornice or snowcat). Human triggering can be possible from thin, rocky areas.
Natural cornice falls have been reported with recent strong solar and daytime warning.  Continue to chose terrain with limited exposure to overhead Cornices on Saturday as Freezing levels rise and if the sun makes one last appearance ahead of the storm.   Cornice falls are dangerous in their own right but they may also trigger avalanches on slopes they impact.
Natural cornice falls have been reported recently and will likely continue as the wind and sun continue over the next few days. Cornice falls are dangerous in their own right but they may also trigger avalanches on slopes they impact.
The basal weaknesses still linger. While difficult to trigger, any resulting avalanche will be large.
Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. The bulk of events occur during periods of rapid loading by new snow or wind, or are triggered by very large loads (wind slab avalanche, cornice or snowcat).
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. The most recent activity has been focused around the Golden area, but steep, rocky, shallow terrain throughout the region should be treated with caution. Avoid big alpine slopes that are threatened by cornices overhead.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. The bulk of events occur during periods of rapid loading by new snow or wind, or are triggered by very large loads (wind slab avalanche, cornice or snowcat).
This is a classic \"low probability, high consequence\" problem. While it is difficult to trigger, resulting avalanches will be very large. Use caution in shallow snowpack areas where triggering is more of a concern.
We're not getting a ton of snow in one shot, but consistent dribs and drabs of snow this week accompanied by strong southwest wind could reactivate the deep persistent slab problem.  It's a bit of a moving target as we're not exaclty sure how much snow it will take to wake this problem up, but it needs to be on our minds this week.  Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine.
mall wind slabs may be more reactive than expected where they are sitting on top of a fragile layer of surface hoar.
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a buried weak layer lingers at the base of the snowpack. The most likely place to trigger this layer is in shallow and rocky terrain. We doubt that the new loads from the present storm will be sufficient to induce pervasive avalanche activity on these layers, but as is typical with deep persistent avalanche problems, there is uncertainty.
Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. The bulk of events occur during periods of rapid loading by new snow or wind, or are triggered by very large loads (wind slab avalanche, cornice or snowcat).
Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. The bulk of events occur during periods of rapid loading by new snow or wind, or are triggered by very large loads (wind slab avalanche, cornice or snowcat).
A layer of weak and feathery surface hoar crystals was buried mid-February and now sits 30-50 cm deep. It has been reactive to human triggering in the past week, typically in open trees in the east of the region. The problem layer may be spottier in the west of the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":29,"length":12,"key":0}],"data":{}},{"key":"3uqgo","text":"There is uncertainty around how this layer will react to new snow loads from the present storm. In the long term, more load will help the interface to bond over time. But in the mean time, burying it deeper could make human triggering more difficult but higher consequence as it will produce larger avalanches. Rapid loading could also cause the layer to fail and induce natural activity. Uncertainty about deep weaknesses is best managed through conservative terrain selection.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
A weak layer of feathery surface hoar may be found around 50 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features in parts of the region. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers near the bottom of the snowpack, predominantly on north through east aspects in the alpine. The bulk of events occur during periods of rapid loading by new snow or wind, or are triggered by very large loads (wind slab avalanche, cornice or snowcat). Human triggering can be possible from thin, rocky areas.
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a buried weak layer lingers in the snowpack. The most likely place to trigger this layer is in shallow and rocky terrain.
Cornices are large and fragile. If triggered, a cornice failure may trigger a wind slab or a deep persistent slab on the slopes below.
Natural cornice falls have been reported recently and will likely continue as the sun stays out over the next few days. Cornice falls are dangerous in their own right but they may also trigger avalanches on slopes they impact.
A 20 to 30 cm slab has been reactive to riders over the past week. The slab has been touchiest in open trees in the east of the region, where the slab rests on a layer of weak and feathery surface hoar crystals that was buried mid-February. The spatial distribution of the surface hoar layer is unclear and may be spottier in the west of the region.
Enormous cornices have grown on most ridge lines and natural cornice failures have been observed in the last week suggesting that many cornices hang on the brink of failure. Brief periods of the strenthening February sun could exacerbate this problem.
This problem is still difficult to trigger, but snowpack stability tests today indicate a failure in the basal facets. Any resulting avalanche will be large and destructive.
A 20 to 30 cm slab has been reactive to riders in the past week. The slab has been touchiest in open trees in the east of the region, where the slab rests on a layer of weak and feathery surface hoar crystals. The spatial distribution of the surface hoar layer is unclear and may be spottier in the west of the region.
Cornices are most prone to failure while they're growing, and we're expecting strong southwest wind along with a significant amount of snow. When large chunks of cornice fail there is potential for deep slab avalanches as evidenced by recent activity.
Strong to extreme wind from the west has left unstable wind slabs at upper elevations. Wind slab avalanches in motion could step down to buried weak layers and release very large persistent or deep persistent slab avalanches.
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a buried weak layer lingers at the base of the snowpack. The most likely place to trigger this layer is in shallow and rocky terrain. We doubt that the new loads from the present storm will be sufficient to induce pervasive avalanche activity on these layers, but as is typical with deep persistent avalanche problems, there is uncertainty.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. The most recent activity has been focused around the Golden area, but wind scoured, rocky, shallow terrain can be suspect. Avoid big alpine slopes that are threatened by cornices overhead.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
A weak layer of near surface facets and surface hoar from February 22 may get buried down 40-70 cm. On solar aspects, these weak grains may be accompanied by a crust. As new snow and wind add to the slab above, there is concern for the size and consequences of avalanches on this persistent weak layer.
Cornices will build with Westerly winds and new snow.  Continue to chose terrain with limited exposure to overhead Cornices.   Cornice falls are dangerous in their own right but they may also trigger avalanches on slopes they impact.
Wind slabs could be problematic in wind exposed features in the alpine and near ridgetops. These slabs may become more sensitive to both natural and human triggering Friday as the warming temperatures and sun heat the upper snowpack.
An older layer of surface hoar now sits 30-50 cm deep. This weak layer produced significant avalanche activity focused in the east of the region prior to the last storm. While it is likely bonding over time, there is uncertainty around remnant reactivity. It has not been active in the recent avalanche cycle. If it remains triggerable, it will require large loads.
Wind slabs could be problematic in wind exposed features in the alpine and near ridgetops. These slabs may become more sensitive to both natural and human triggering Friday as the warming temperatures and sun heat up the upper snowpack. Watch for loose wet avalanches on solar aspects too.
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a buried weak layer lingers at the base of the snowpack. The most likely place to trigger this layer is in shallow and rocky terrain. We doubt that the new loads from the present storm will be sufficient to induce pervasive avalanche activity on these layers, but as is typical with deep persistent avalanche problems, there is uncertainty.
A weak layer of surface hoar may be found 30-60 cm deep on north-facing aspects near and above treeline. This persistent slab problem is not typical for the South Coast, and there is high uncertainty with regard to how quickly it will heal. Reduce this uncertainty by investigating these deeper layers if you are travelling near steep, open slopes at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":16,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/
This problem is still difficult to trigger, but snowpack stability tests today indicate a failure in the basal facets. Any resulting avalanche will be large and destructive.
A weak layer of surface hoar may be found 40-70 cm deep on north-facing aspects near and above treeline. This persistent slab problem is not typical for the South Coast, and there is high uncertainty with regard to how quickly it will heal. Reduce this uncertainty by investigating these deeper layers if you are travelling near steep, open slopes at upper elevations.
We're not getting a ton of snow in one shot, but consistent dribs and drabs of snow this week accompanied by strong southwest wind could reactivate the deep persistent slab problem.  It's a bit of a moving target as we're not exaclty sure how much snow it will take to wake this problem up, but it needs to be on our minds this week.  Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. The most recent activity has been focused around the Golden area, but wind scoured, rocky, shallow terrain can be suspect. Avoid big alpine slopes that are threatened by cornices overhead. A warming trend in the coming days has the potential of waking up this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a buried weak layer lingers at the base of the snowpack. This layer has been quiet, with no reports of avalanches on it since mid February. There is potential for it to wake up with rapid warming or significant loading by new snow.
In the north of the region (e.g. Duffey, Hurley, Goldbridge) on sheltered slopes near and above treeline, a layer of surface hoar from February 22 may be buried under 40-70 cm of snow. On solar aspects, these weak grains may be accompanied by a crust. Recent snow, wind, and solar radiation may have promoted cohesion in the slab above this layer, priming it for human triggering. Travelling near steep, open slopes at upper elevations warrants an investigation of this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"Deeper in the snowpack, a weak layer of facets near the ground presents a lingering concern on steep, shallow slopes in the alpine.
Weak snow at the bottom of the snowpack hasn't gone away unfortunately.  As temperatures warm and the strong sun comes out over the next few days we need to be thinking about the potential for large destructive avalanches. Cornice failures become more likely during these kinds of conditions and a failing cornice could be the perfect trigger for the deep persistent slab. Human triggering would be most likley around steep rocky terrain features, or anywhere the snowpack is thin and weak.
A layer of surface hoar was buried mid-February and now sits 30-50 cm deep. It was reactive to human triggering prior to the recent storm, typically in open trees in the east of the region. The problem layer may be spottier in the west of the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":11,"length":12,"key":0}],"data":{}},{"key":"3uqgo","text":"There is uncertainty around how this layer will react now that it has been buried deeper by the recent storm. In the long term, more load will help the interface to bond over time. But in the mean time, burying it deeper could make triggering more difficult but higher consequence as it will produce larger avalanches. Recent storm avalanche activity has demonstrated that if this persistent layer still has avalanche potential, triggering it requires larger loads than size 1-2 avalanches. Uncertainty about deep weaknesses is best managed through conservative terrain selection.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
Cornices are most prone to failure while they're growing, and we're expecting continued strong southwest wind along with a significant amount of snow. When large chunks of cornice fail there is potential for deep slab avalanches as evidenced by recent activity.
This problem is still difficult to trigger, but snowpack stability tests today indicate a failure in the basal facets. Any resulting avalanche will be large and destructive.
A layer of weak facets (and possibly surface hoar in isolated areas) from February 22 may be buried 40-70 cm deep. Although there has been little reported avalanche activity on this interface, observers have reported whumphing and snowpack test results that suggest a propensity for human triggering may still linger.
An older layer of surface hoar now sits 30-50 cm deep. This weak layer produced significant avalanche activity focused in the east of the region prior to the last storm. While it is likely bonding over time, there is uncertainty around remnant reactivity. It has not been active in the recent avalanche cycle. If it remains triggerable, it will require large loads.
Cornices have grown larger during the storm. When large chunks of cornice fall there is potential for very large slab avalanches as evidenced by recent activity.
We're not getting a ton of snow in one shot, but consistent dribs and drabs of snow this week accompanied by strong southwest wind could reactivate the deep persistent slab problem.  It's a bit of a moving target as we're not exaclty sure how much snow it will take to wake this problem up, but it needs to be on our minds this week.  Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine.
30-60 cm of snow overlies a weak interface of surface hoar, sun crusts, or a combination of the two. This is not typical of this region and will take longer than usual to heal. It is expected to persist at least through the week. The most problematic areas are north-facing open slopes near treeline. Loading from new snow and wind may increase reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":101,"length":129,"style":"BOLD"}],"entityRanges":[{"offset":46,"length":12,"key":0},{"offset":60,"length":10,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#surface-hoar","target":"_self","url":"https://www.avalanche.ca/glossary#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#crusts-are-hard-layers-of-snow-usually-created-by-liquid","target":"_self","url
Friday night's snow and recent South west and Westerly winds built windslab in the Alpine and at exposed Treeline locations.  Use added caution in lee terrain features, particularly near ridges.  Fresh Cornices have also been reported with recent snow and winds. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2bhav","text":"Thin windslabs have the potential to trigger deeper weak layers such as the Surface Hoar problem.
Sunday's storm snow and strong southwest wind is expected to form fresh sensitive slabs at all elevations. Storm snow will likely come to rest on yet another layer of surface hoar which is  expected to allow for touchy new storm slabs.
A weak layer of feathery surface hoar may be found around 50 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. A persistent slab problem is not typical for the region and there is high uncertainty with regard to how quickly it will stabilize. Assess the layer in the snowpack prior to entering committing avalanche terrain or adopt a conservative mindset to avoid the problem.
This problem is still difficult to trigger, but snowpack stability tests today indicate a failure in the basal facets. Any resulting avalanche will be large and destructive.
A weak layer of near surface facets and surface hoar from February 22 will likely get buried down 40-70 cm. On solar aspects, these weak grains may be accompanied by a crust. As new snow and wind add to the slab above, there is growing concern for the size and likelihood of avalanches on this persistent weak layer.
Cornices have grown larger during the storm. When large chunks of cornice fall there is potential for very large slab avalanches as evidenced by recent activity.
Consistent dribs and drabs of snow this week accompanied by strong southwest wind has aggravated the deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine.
Continued warm temperatures may allow for natural cornice failure Saturday.
A weak layer of surface hoar sits 40-70 cm deep. Read more about surface hoar on our forecaster blog! Human triggering of this layer is very likely, and has been observed extensively through the region over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are from all aspects and elevations, but especially concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":85,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.c
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a buried weak layer lingers at the base of the snowpack. This layer has been quiet, with no reports of avalanches on it since mid February. There is potential for it to wake up with rapid warming or significant loading by new snow.
Weak snow at the bottom of the snowpack hasn't gone away unfortunately.  Cornice failures become more likely during these kinds of conditions and a failing cornice could be the perfect trigger for the deep persistent slab. Human triggering would be most likley around steep rocky terrain features, or anywhere the snowpack is thin and weak.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind scoured, rocky, shallow terrain as suspect. Also avoid big alpine slopes that are threatened by cornices overhead. A warming trend has the potential of waking up this layer on Friday.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Strong southwest wind has formed wind slabs in exposed terrain. Use added caution in lee terrain features, particularly near ridges.
Weak snow at the bottom of the snowpack hasn't gone away unfortunately.  Cornice failures become more likely during these kinds of conditions and a failing cornice could be the perfect trigger for the deep persistent slab. Human triggering would be most likley around steep rocky terrain features, or anywhere the snowpack is thin and weak.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind scoured, rocky, shallow terrain as suspect. Also avoid big alpine slopes that are threatened by cornices overhead. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Consistent dribs and drabs of snow this week accompanied by strong southwest may be aggravating the deep persistent slab problem.  It's a bit of a moving target as we're not exactly sure how much snow it will take to wake this problem up, but it needs to be on our minds this weekend.  Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine.
A weak layer of surface hoar sits 20-40 cm deep. So far, the layer has been most reactive at treeline and alpine elevations in the deeper snowpack areas in the west of the forecast region. Avalanche activity on this layer is expected to increase as it approaches critical loading by new snow and wind forecast later in the week. Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":365,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"typ
Strong southwest wind has formed wind slabs in exposed terrain. Use added caution in lee terrain features, particularly near ridges.
Friday night's snow and recent South west and Westerly winds will also contribute windslab formation in the Alpine and at exposed Treeline locations.  Buried and fresh windslabs and wind effect have been reported in Alpine and on exposed features at treeline.  Use added caution in lee terrain features, particularly near ridges.
Friday night's snow and recent South west and Westerly winds will also contribute windslab formation in the Alpine and at exposed Treeline locations.  Buried and fresh windslabs and wind effect have been reported in Alpine and on exposed features at treeline.  Use added caution in lee terrain features, particularly near ridges.
There is a small chance the new load will overload the deep layers. We are expecting a significant rapid loading pulse early in the storm. Sparsely treed areas and thin crossloaded terrain are likely areas to cause trouble.
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a buried weak layer lingers at the base of the snowpack. This layer has been quiet, with no reports of avalanches on it since mid February. There is potential for it to wake up with rapid warming or significant loading by new snow.
A weak layer of surface hoar sits 60-80 cm deep. The overlying snow has been cohered into slabs by incremental loading through successive storms, wind at upper elevations and mild temperatures at lower elevations. As slab character increases, so do reactivity and size of avalanches failing on the weak layer (surface hoar). Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":361,"length":15,"key":0}],"data":{}},{"key":"8668b","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2q20a","text":"Skier triggering of these persistent slabs is likely, and has be observed over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8mguu","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1c1kv","text":"This problem has been observed mostly in the south of the region. There is uncertainty around the distribution of the surface hoar problem in the north.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"typ
Around 30 to 50 cm of snow overlies a weak layer of surface hoar. The layer has been most problematic on northwest to northeast aspects, but avalanches have also occurred on southerly aspects. The likelihood of triggering this layer on Wednesday may increase on southerly aspects due to periods of sunny skies. Avalanches have occurred from 1600 m to 2300 m in the region. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
A weak layer of feathery surface hoar may be found around 50 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. A persistent slab problem is not typical for the region, and there is high uncertainty with regard to how quickly it will stabilize. Assess the layer in the snowpack prior to entering committing avalanche terrain or adopt a conservative mindset to avoid the problem.
Strong to extreme wind from the west coupled with moderate amounts of new snow has left unstable wind slabs at upper elevations. East winds Wednesday night into Thursday have allowed wind slabs to form on all aspects. Wind slab avalanches in motion could step down to buried weak layers and release very large persistent or deep persistent slab avalanches.
Additional new snow continues to load a widespread layer of surface hoar, with about 25 to 50 cm overlying it across the region.   So far, the layer has been most reactive at treeline and alpine elevations in the Western (and deeper snowpack) regions of the forecast area and where the recent snow has been redistributed by the wind and formed a slab above the surface hoar.
40-70 cm cm of snow is settling over a layer of surface hoar on sheltered slopes near and above treeline. On solar aspects, these weak grains may be accompanied by a crust. Recent snow, wind, and solar radiation have promoted cohesion in the slab above this layer, priming it for human triggering. Travelling near steep, open slopes at upper elevations warrants an investigation of these deeper layers.
A weak layer of feathery surface hoar may be found around 50 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Strong to extreme wind from the west has left unstable wind slabs at upper elevations. Wind slab avalanches in motion could step down to buried weak layers and release very large persistent or deep persistent slab avalanches.
A weak layer of surface hoar sits 40-70 cm deep. Read more about surface hoar on our forecaster blog! Human triggering of this layer is very likely, and has been observed extensively through the region over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are from all aspects and elevations, but especially concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":85,"length":15,"key":0}],"data":{}},{"key":"3k532","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"typ
A weak layer of surface hoar sits 60-80 cm deep. The overlying snow has been cohered into slabs by incremental loading through successive storms, wind at upper elevations and mild temperatures at lower elevations. As slab character increases, so do reactivity and size of avalanches failing on the weak layer (surface hoar). Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":361,"length":15,"key":0}],"data":{}},{"key":"8668b","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2q20a","text":"Skier triggering of these persistent slabs is likely, and has be observed over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are concentrated on north to east aspects around treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8mguu","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1c1kv","text":"This problem has been observed mostly in the south of the region. There is uncertainty around the distribution of the surface hoar problem in the north.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"typ
A layer of weak facets (and possibly surface hoar in isolated areas) from February 22 may be buried 40-70 cm deep. Although there has been little reported avalanche activity on this interface, snowpack test results suggest that a propensity for human triggering may still linger.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deeper weak layer of facets near the ground presents a lingering concern on steep, shallow slopes in the alpine.
Incremental snowfall and strong winds are building reactive wind slabs in the alpine and open areas at treeline. A natural wind slab cycle size 2-3 was observed Tuesday. If triggered, windslabs have the potential to trigger deeper weak layers.
Two surface hoar layers are found 30-60 cm and 75-125 cm below the surface. These layers continue to produce large natural and human triggered avalanches, particularly at treeline elevations where surface hoar is well preserved.
A weak layer of feathery surface hoar may be found around 50 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Strong southwest wind has formed wind slabs in exposed terrain. Use added caution in lee terrain features, particularly near ridges.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. Cornices have grown large and loom over many ridge lines, a failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
A weak layer of surface hoar sits 60-100 cm deep. (Read more about surface hoar on our forecaster blog) Natural persistent slabs size 2-3 and skier triggered size 1-2 have been running on this layer over the last few days even as professionals seek to actively avoid suspect terrain features (eg. convex rolls). Observations are concentrated on north to east aspects around treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of the surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":87,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"typ
Two surface hoar layers are found 30-60 cm and 75-125 cm below the surface. These layers continue to produce large natural and human triggered avalanches, particularly at treeline elevations where the surface hoar is well preserved.
A weak layer of surface hoar sits 20-60 cm deep. So far, the layer has been most reactive at treeline and alpine elevations in the deeper snowpack areas in the west of the forecast region. Where this layer exists, avalanche activity is expected to increase as it approaches critical loading by new snow and wind forecast later in the week. Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":376,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"typ
Weak snow at the bottom of the snowpack hasn't gone away unfortunately. Cornice failures could be the perfect trigger for a deep persistent slab. Human triggering would be most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. Evidence of deep persistent slab avalanche activity over the past month has been focused in the Sparwood-Elkford area.
25-50 cm cm of snow is settling over a layer of surface hoar on sheltered slopes near and above treeline. Recent warm temperatures have promoted cohesion in the slab above, priming this layer for human triggering. This persistent slab problem is most suspect on north-facing aspects between 1900-2300 m.
Friday night's snow and recent Southwest and Westerly winds will also contribute windslab formation in the Alpine and at exposed Treeline locations.  Use added caution in lee terrain features, particularly near ridges.
Cornices are growing at this time with the new snow, strong winds and warm temps.  If they fail, its likely they will trigger a windslabs or deep persistent slab on the underlying slopes.
Weak snow at the bottom of the snowpack hasn't gone away unfortunately.  Cornice failures become more likely during these kinds of conditions and a failing cornice could be the perfect trigger for the deep persistent slab. Human triggering would be most likley around steep rocky terrain features, or anywhere the snowpack is thin and weak.
In the north of the region (e.g. Duffey, Hurley, Goldbridge) on sheltered slopes near and above treeline, a layer of surface hoar from February 22 may be buried under 40-70 cm of snow. Recent snow, wind, and solar radiation may have promoted cohesion in the slab above this layer, priming it for human triggering. Travelling near steep, open slopes at upper elevations warrants an investigation of this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"Deeper in the snowpack, a weak layer of facets near the ground presents a lingering concern on steep, shallow slopes in the alpine.
25-50 cm cm of snow is settling over a layer of surface hoar on sheltered slopes near and above treeline. Recent warm temperatures have promoted cohesion in the slab above, priming this layer for human triggering. This persistent slab problem has been reactive primarily on north-facing slopes between 1900-2300 m.
A weak layer of surface hoar may be found 40-70 cm deep on north-facing aspects near and above treeline. This persistent slab problem is not typical for the South Coast, and there is high uncertainty with regard to how quickly it will heal. Reduce this uncertainty by investigating these deeper layers if you are travelling near steep, open slopes at upper elevations.
Light snowfall and strong winds are building fresh wind slabs in the alpine and open areas at treeline. If triggered, windslabs have the potential to trigger deeper weak layers.
25-50 cm cm of snow is settling over a layer of surface hoar on sheltered slopes near and above treeline. Although it is suspect on all aspects, this persistent slab problem has been reactive primarily on north-facing slopes between 1800-2300 m.
A weak layer of feathery surface hoar may be found around 40 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"15ob2","text":"In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deeper weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
Light snowfall and strong winds are building fresh wind slabs in the alpine and open areas at treeline. If triggered, windslabs have the potential to trigger deeper weak layers.
Strong to extreme wind from the west coupled with moderate amounts of new snow has left unstable wind slabs at upper elevations. Wind slab avalanches in motion could step down to buried weak layers and release very large persistent or deep persistent slab avalanches.
A weak layer of surface hoar sits 20-40 cm deep. So far, the layer has been most reactive at treeline and alpine elevations in the deeper snowpack areas in the west of the forecast region. Avalanche activity on this layer is expected to increase as it approaches critical loading by new snow and wind forecast later in the week. Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":365,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"typ
Wind is forecast to pick up again on Monday, and resume windslab development in the alpine and exposed treeline elevations. Expect reactive wind slabs in lee terrain features such as just below ridgetop and on convexities. If triggered, windslabs have the potential to trigger deeper weak layers.
Cornices are growing at this time with the new snow, strong winds and warm temps.  If they fail, its likely they will trigger a windslabs or deep persistent slab on the underlying slopes.
A rather volatile layer of buried surface hoar is 75 to 125 cm below the surface. This layer produced very large natural and human triggered avalanches over the weekend. Large cornices that loom over many slopes are on the brink of failure. Failing cornices are likely to produce large avalanches when they impact slopes.
Weak snow at the bottom of the snowpack hasn't gone away unfortunately, and will continue to be a concern on big terrain features. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"311vo","text":"Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. Natural triggering is possible on slopes below cornices and on slopes that warm up in the heat of the day.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Strong southwest wind has formed wind slabs in exposed terrain. Use added caution in lee terrain features, particularly near ridges.
40-70 cm cm of snow is settling over a layer of surface hoar on sheltered slopes near and above treeline. Recent snow and wind have promoted cohesion in the slab above, priming it for human triggering. Travelling near steep, open slopes at upper elevations warrants an investigation of this deeper layer.
Wind slab development continues in the alpine and exposed treeline elevations. Expect reactive wind slabs in lee terrain features such as just below ridgetop and on convexities. If triggered, windslabs have the potential to trigger deeper weak layers.
Weak snow at the bottom of the snowpack hasn't gone away unfortunately.  Cornice failures become more likely during these kinds of conditions and a failing cornice could be the perfect trigger for the deep persistent slab. Human triggering would be most likley around steep rocky terrain features, or anywhere the snowpack is thin and weak.
A weak layer of surface hoar sits 20-40 cm deep. So far, the layer has been most reactive at treeline and alpine elevations in the deeper snowpack areas in the west of the forecast region. Avalanche activity on this layer is expected to increase as it approaches critical loading by new snow and wind forecast later in the week. Read more about surface hoar on our forecaster blog!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":365,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"typ
Cornices are large and fragile. If triggered, a cornice failure may trigger a wind slab or a deep persistent slab on the slopes below.
A weak layer of feathery surface hoar may be found 40-70 cm deep on north-facing aspects near and above treeline. A persistent slab problem is not typical for the South Coast, and there is high uncertainty with regard to how quickly it will heal. Reduce this uncertainty by investigating these deeper layers if you are travelling near steep, open slopes at upper elevations.
A rather volatile layer of buried surface hoar is 60 to 130 cm below the surface. This layer produced very large natural and human triggered avalanches over the weekend.  Large cornices that loom over many slopes are on the brink of failure. Failing cornices are likley to produce large avalanches when they impact slopes.
A bit of new snow and strong wind is expected to form fresh wind slabs which will be most prevalent at upper elevations. Fresh wind slabs in motion could step down to the February 19th surface hoar and release persistent slab avalanches.
Cornices have grown large and loom over many ridge lines. These have the potential to fail naturally with the natural rise and fall of temperatures throughout the day, they could also fail if we get too close to them. Give these things a wide berth.
A weak layer of feathery surface hoar may be found around 40 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"15ob2","text":"In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deeper weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
Weak faceted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Wind slabs may continue to be reactive to skier traffic. Strong southwest to westerly wind has formed wind slabs in lee terrain features at higher elevations, particularly near ridges. Wind slabs could step down to buried weak layers and form larger avalanches.
A weak layer of surface hoar sits 30-70 cm deep. So far, this layer has been most reactive at treeline and alpine elevations in the deeper snowpack areas in the west of the forecast region. Where this layer exists, avalanche activity is expected to become more likely as it approaches critical loading by new snow and wind.
A weak layer of surface hoar may be found 60-100 cm deep, and human-triggering is likely. Over the past week, large (size 2-3) natural and human-triggered avalanches have released on this layer. Observations are concentrated to north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
Two surface hoar layers are found 30-60 cm and 75-125 cm below the surface. These layers continue to produce large natural and human triggered avalanches, particularly at treeline elevations where the surface hoar is well preserved.
Strong to extreme wind from the west coupled with moderate amounts of new snow has left unstable wind slabs at upper elevations. East winds Wednesday night into Thursday have allowed wind slabs to form on all aspects. Wind slab avalanches in motion could step down to buried weak layers and release very large persistent or deep persistent slab avalanches.
Incremental snowfall and recent strong winds formed reactive wind slabs in the alpine and open areas at treeline that remain likely to human-trigger. If triggered, wind slabs have the potential to step-down to deeper weak layers. This problem overlaps with where cornices may be reaching their breaking point.
Weak snow at the bottom of the snowpack hasn't gone away unfortunately, and will continue to be a concern on big terrain features. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. Natural triggering is possible on slopes below cornices and on slopes that warm up in the heat of the day. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Incremental snowfall and recent strong winds formed reactive wind slabs in the alpine and open areas at treeline that remain likely to human-trigger. If triggered, wind slabs have the potential to step-down to deeper weak layers. This problem overlaps with where cornices may be reaching their breaking point.
nowfall amounts are expected to vary across the region. Areas that accumulate more than 20 cm may develop a widespread storm slab problem. In areas where less snow accumulates, slab formation will be specific to where the wind transports snow into deeper drifts.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. Cornices have grown large and loom over many ridge lines, a failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Two surface hoar layers are found 50-100 cm and 90-140 cm below the surface. These layers continue to produce large natural and human triggered avalanches, particularly at shaded treeline elevations where the surface hoar is well preserved.
Incremental snowfall and recent strong winds formed reactive wind slabs in the alpine and open areas at treeline that remain possible to human-trigger. If triggered, wind slabs have the potential to step-down to deeper weak layers. This problem also overlaps with where cornices may be reaching their breaking point.
Incremental snowfall and strong winds are building reactive wind slabs in the alpine and open areas at treeline. A natural wind slab cycle size 2-3 was observed Tuesday. If triggered, windslabs have the potential to trigger deeper weak layers.
A weak layer of feathery surface hoar may be found around 50 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. Although we haven't heard of recent avalanches on this layer, we have reports of the layer still standing out and releasing in snowpack tests. Assess the layer in the snowpack prior to entering committing avalanche terrain or adopt a conservative mindset to avoid the problem.
Cornices have grown large and loom over many ridge lines. They have potential to fail as they are loaded with new snow and could also fail under the weight of a person or machine. Give them a wide berth.
Two surface hoar layers are found 50-100 cm and 90-140 cm below the surface. These layers produced large natural and human triggered avalanches as recently as Friday. They are most problematic at shaded treeline elevations where the surface hoar is well preserved.
A weak layer of feathery surface hoar may be found around 40 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"15ob2","text":"In the north of the region (e.g. Duffey, Hurley, Goldbridge), a persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
A weak layer of surface hoar is buried 60-100 cm deep, and human-triggering remains possible. Over the past several days, large (size 2-3) natural and human-triggered avalanches have released on this layer. Observations are concentrated to north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
Weak snow at the bottom of the snowpack hasn't gone away, and will be an increasing concern as rapid loading and avalanches in surface layers strain the snowpack on Saturday. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Incremental snowfall and recent strong winds formed reactive wind slabs in the alpine and open areas at treeline that remain possible to human-trigger. If triggered, wind slabs have the potential to step-down to deeper weak layers. This problem also overlaps with where cornices may be reaching their breaking point.
New wind slabs may form on Friday with strong southwest wind and 5 to 10 cm of new snow. The most suspect terrain will be leeward slopes immediately adjacent to ridge lines. Wind slabs could step down to the buried surface hoar layer, forming large avalanches.
A weak layer of feathery surface hoar may be found around 100 cm deep on northerly aspects around treeline and alpine elevations. Although we haven't heard of recent avalanche activity on this layer, we have reports of the layer still producing results in snowpack tests. Assess the layer in the snowpack prior to entering committing avalanche terrain or adopt a conservative mindset to avoid the problem.
Incremental snowfall with wind has formed wind slabs in the alpine and open areas at treeline.This problem also overlaps with where cornices may be reaching their breaking point. If triggered, wind slabs and cornices could step down to the buried surface hoar layer, forming large avalanches. Use added caution on sun-exposed slopes when the sun is shining, as it could rapidly deteriorate the storm snow and cornices and cause loose or slab avalanches.
Two surface hoar layers are found 50-100 cm and 90-140 cm below the surface. These layers continue to produce large natural and human triggered avalanches, particularly at shaded treeline elevations where the surface hoar is well preserved.
Incremental snowfall with wind has formed wind slabs in the alpine and open areas at treeline.This problem also overlaps with where cornices may be reaching their breaking point. If triggered, wind slabs and cornices could step down to the buried surface hoar layer, forming large avalanches. Use added caution on sun-exposed slopes when the sun is shining, as it could rapidly deteriorate the storm snow and cornices and cause loose or slab avalanches.
A weak layer of feathery surface hoar may be found around 100 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features in parts of the region. Although we haven't heard of any reports of avalanche activity on this layer for over a week, the layer has still produced results in snowpack tests, where it exists. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
A weak layer of feathery surface hoar may be found around 40 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features. We haven't received any reports of avalanche activity on this layer but some snowpack tests are producing results, whereas others aren't. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"In the north of the region (e.g. Duffey, Hurley, Goldbridge), a persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
New snow accumulations exposed to strong sunshine will be increasingly likely to shed from steep slopes on Thursday. This may occur naturally or with a human trigger.
Storm slabs may build over the day, as 10 to 20 cm of snow is forecast to Saturday afternoon. The snow may form slab properties quickly in lee terrain features, with light to moderate southwest wind forecast. If triggered, storm slabs could step down to the buried surface hoar layer, forming large avalanches.
ncremental snowfall with wind has formed wind slabs in the alpine and open areas at treeline.This problem also overlaps with where cornices may be reaching their breaking point. If triggered, wind slabs and cornices could step down to the buried surface hoar layer, forming large avalanches. Use added caution on sun-exposed slopes when the sun is shining, as it could rapidly deteriorate the storm snow and cornices and cause loose or slab avalanches.
A weak layer of surface hoar is buried 50-100 cm deep and is still possible to human-trigger. Over the past week, large (size 2-3) natural and human-triggered avalanches have released on this layer. Observations are concentrated to north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
Aging wind slabs at upper elevations may remain sensitive to human triggering, especially in step terrain near ridge crest.  Wind slab avalanches in motion could step down to buried weak layers and release very large persistent or deep persistent slab avalanches.
Strong to extreme wind from the west coupled with moderate amounts of new snow has left unstable wind slabs at upper elevations. East winds Wednesday night into Thursday have allowed wind slabs to form on all aspects. Wind slab avalanches in motion could step down to buried weak layers and release very large persistent or deep persistent slab avalanches.
Cornices are large and fragile. If triggered, a cornice failure may trigger a wind slab or a deep persistent slab on the slopes below.
Around 15 to 30 cm of snow fell in the region, with the most in the east (e.g., Kootenay Pass). As this snow consolidates, it will form storm slabs. The snow may have formed slab properties in lee terrain features, as the snow fell with light to moderate southwest wind. If triggered, storm slabs could step down to the buried surface hoar layer, forming large avalanches. Use added caution on sun-exposed slopes when the sun is shining, as it could rapidly deteriorate the storm snow and cause loose or slab avalanches.
A weak layer of feathery surface hoar may be found around 100 cm deep on northerly aspects around treeline and alpine elevations. Although we haven't heard of recent avalanche activity on this layer, we have reports of the layer still producing results in some snowpack tests. Assess the layer in the snowpack prior to entering committing avalanche terrain or adopt a conservative mindset to avoid the problem.
Saturday's snowfall totals varied across the region, with the highest amounts falling in the southern half. Areas that accumulated more than 20 cm may have formed a storm slab problem that could be reactive to human triggering as the snow settles. In areas where less snow accumulated, slab formation will likely be specific to where the wind has transported snow into deeper drifts. If triggered, storm slabs could step down to the buried surface hoar layer, forming large avalanches. Use added caution on sun-exposed slopes when the sun is shining, as it could rapidly deteriorate the storm snow and cornices and cause loose or slab avalanches.
A weak layer of feathery surface hoar may be found around 40 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features. The latest avalanche activity was in the north of the region on March 6. The layer has been dormant in the south (e.g. around Coquihalla), where snowpack tests are suggesting that the layer may be bonding. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"In the north of the region (e.g. Duffey, Hurley, Goldbridge), a persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
Weak snow at the bottom of the snowpack hasn't gone away, and will be an increasing concern as rapid loading and avalanches in surface layers strain the snowpack on Saturday. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Cornices have grown large and loom over many ridge lines. They have potential to fail naturally as well as under the weight of a person or machine and they may trigger slabs on slopes below them. Give them a wide berth.
A weak layer of feathery surface hoar may be found around 100 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features in parts of the region. Although we haven't heard of any reports of avalanche activity on this layer for over a week, the layer has produced results in snowpack tests, where it exists. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
A weak layer of surface hoar is buried 60-100 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
Incremental snowfall with wind has formed wind slabs in the alpine and open areas at treeline.This problem overlaps with where cornices may be reaching their breaking point. If triggered, wind slabs and cornices could step down to the buried surface hoar layer, forming large avalanches. Periods of intense sun may make these problems more susceptible to failure.
The deep persistent layer is still a concern, especially in shallow snowpack areas. A large cornice trigger could also be enough to weak up this layer.
Saturday's snowfall totals varied across the region, with the highest amounts falling in the southern half. Areas that accumulated more than 20 cm may have formed a storm slab problem that remains possible to human-trigger. In areas where less snow accumulated, slab formation will be specific to where the wind has transported snow into deeper drifts. Intense solar radiation may rapidly destabilize the recent storm snow. If triggered, storm slabs could step down to the buried surface hoar layer, forming large avalanches.
Incremental snowfall with wind has formed wind slabs in the alpine and open areas at treeline.This problem overlaps with where cornices may be reaching their breaking point. If triggered, wind slabs and cornices could step down to the buried surface hoar layer, forming large avalanches. Periods of intense sun may make these problems more susceptible to failure.
nowfall with wind has formed wind slabs in the alpine and open areas at treeline.This problem overlaps with where cornices may be reaching their breaking point. If triggered, wind slabs and cornices could step down to the buried surface hoar layer, forming large avalanches. Periods of intense sun may make these problems more susceptible to failure.
A weak layer of surface hoar is buried 60-120 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
A weak layer of surface hoar is buried 50-100 cm deep and is still possible to human-trigger. Over the past week, large (size 2-3) natural and human-triggered avalanches have released on this layer. Observations are concentrated to north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
A weak layer of surface hoar is buried 50-90 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
s the fresh snow sees the sun for the first time a round of loose wet avalanches is expected.  This should be confined to solar aspects (those that face south & west).  The steeper the slope, the more activity you're likley to see.
A weak layer of surface hoar sits 35-70 cm deep, within the prime range for human-triggering. Over the past several days, large human-triggered avalanches have released on this layer. As more areas approach critical loading from additional snow and wind, human-triggering remains likely.
Around 15 to 30 cm of snow fell in the region, with the most in the east (e.g., Kootenay Pass). As this snow consolidates, it will form storm slabs. Use added caution on sun-exposed slopes when the sun is shining, as it could rapidly deteriorate the storm snow and trigger loose dry or slab avalanches.
A weak layer of feathery surface hoar may be found around 100 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features in parts of the region. Although we haven't heard of any reports of avalanche activity on this layer for over a week, the layer has produced results in snowpack tests, where it exists. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
A weak layer of feathery surface hoar may be found around 40 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features. The latest avalanche activity was in the north of the region on March 6. The layer has been dormant in the south (e.g. around Coquihalla), where snowpack tests are suggesting that the layer may be bonding. Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"In the north of the region (e.g. Duffey, Hurley, Goldbridge), a persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. Cornices have grown large and loom over many ridge lines, a failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Two surface hoar layers are found 50-100 cm and 90-140 cm below the surface. These layers produced large natural and human triggered avalanches as recently as Friday. They are most problematic at shaded treeline elevations where the surface hoar is well preserved.
Cornices have grown large and loom over many ridge lines. They have potential to fail naturally as well as under the weight of a person or machine and they may trigger slabs on slopes below them. Give them a wide berth.
A weak layer of surface hoar sits 50-100 cm deep, within the range for human-triggering. Over the past week, large human-triggered avalanches have released on this layer. As more areas approach critical loading from additional snow and wind, human-triggering remains likely.
ncremental snowfall with wind is forming wind slabs in the alpine and open areas at treeline.This problem overlaps with where cornices may be reaching their breaking point. If triggered, wind slabs and cornices could step down to the buried surface hoar layer, forming large avalanches.
A weak layer of feathery surface hoar may be found around 40 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features. The latest avalanche activity was in the north of the region on March 6. The layer has been dormant in the south (e.g. around Coquihalla). Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fmqf1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deeper persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
A weak layer of surface hoar is buried 50-90 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
A weak layer of surface hoar is buried 50-100 cm deep and is still possible to human-trigger. Over the past week, large (size 2-3) natural and human-triggered avalanches have released on this layer. Observations are concentrated to north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
A weak layer of surface hoar is buried 50-90 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
Around 30 to 60 cm of snow overlies a weak layer of surface hoar. This layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but it may exist on all aspects and at all elevations. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Around 30 to 60 cm of snow overlies a weak layer of surface hoar. The layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but the layer may exist on all aspects and at all elevations. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
A weak layer of surface hoar is buried 50-90 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
A weak layer of feathery surface hoar may be found around 40 to 80 cm deep on northerly aspects around treeline and lower alpine elevations. This layer may be spotty and only found in sheltered terrain features. The latest avalanche activity was in the north of the region on March 6. The layer has been dormant in the south (e.g. around Coquihalla). Assess the layer in the snowpack prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fmqf1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7r7fb","text":"In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deeper persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. Cornices have grown large and loom over many ridge lines, a failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Two surface hoar layers are found 70-120 cm and 110-160 cm below the surface. These layers produced large natural and human triggered avalanches as recently as Friday. They are most problematic at shaded treeline elevations where the surface hoar is well preserved.
Around 30 to 60 cm of snow overlies a weak layer of surface hoar. This layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but it may exist on all aspects and at all elevations. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Around 60 to 80 cm of snow overlies a weak layer of surface hoar. This layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but it may exist on all aspects and at all elevations. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deeper persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
A weak layer of surface hoar is buried 50-100 cm deep. Even though avalanche reports decreased over the past week it might still possible to human-trigger. Up to a week ago, large (size 2-3) natural and human-triggered avalanches have released on this layer. Observations were concentrated to north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
A weak layer of surface hoar sits 50-100 cm deep, within the range for human-triggering. Over the past week, large human-triggered avalanches have released on this layer. As more areas approach critical loading from additional snow and wind, human-triggering remains likely.
A weak layer of surface hoar is buried 60-100 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
Two surface hoar layers are found 70-120 cm and 110-160 cm below the surface. These layers continue to produce natural and human triggered avalanches. They are most problematic at treeline elevations where the surface hoar is well preserved.
Still concern for the weak layer deep in the snowpack. Triggering is more concerning in shallow snowpack areas.
Rapidly rising temperatures and intense solar radiation may initiate wet loose avalanches and weaken cornices. This activity is likely to be most prominent on steep slopes that receive direct day-time solar radiation (slopes that face south through west). Minimize exposure to steep, sun-exposed slopes and cornices on Sunday.
Cornices continue to grow. Any cornice failure could be enough to trigger a significant slide on the underlying slopes.
A weak layer of surface hoar sits 50-100 cm deep, within the range for human-triggering. Over the past week, large human-triggered avalanches have released on this layer. As more areas approach critical loading from additional snow and wind, human-triggering remains likely.
Around 60 to 80 cm of snow overlies a weak layer of surface hoar. This layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but it may exist on all aspects and at all elevations. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
A weak layer of surface hoar sits 50-100 cm deep, within the range for human-triggering. Over the past week, large human-triggered avalanches have released on this layer.
A weak layer of surface hoar is buried 60-100 cm deep. Even though avalanche reports decreased over the past week it might still possible to human-trigger. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
A weak layer of surface hoar is buried 60-100 cm deep. Even though avalanche reports decreased over the past week it might still possible to human-trigger. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
A weak layer of surface hoar is buried 60-120 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deep persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
A weak layer of surface hoar is buried 60-120 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
Multiple surface hoar layers have been buried by successive storm events and have shown continued reactivity to human triggering. These layers can be found buried 35-50 cm, 70-120 cm, and 110-160 cm below the surface. These layers have recently produced human triggered avalanches, some of which were remotely-triggered. These weak layers are most problematic at treeline elevations where the surface hoar is well preserved.
A weak layer of surface hoar is buried 60-120 cm deep and is still be sensitive to triggering in specific areas. Although this problem can be found on all aspects and elevations, north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
Warming temperatures and intense solar radiation may initiate wet loose avalanches and weaken cornices. This activity is likely to be most prominent on steep slopes that receive direct day-time solar radiation (slopes that face south through west). Minimize exposure to steep, sun-exposed slopes and cornices.
A weak layer of surface hoar is buried 50-100 cm deep. Even though avalanche reports decreased over the past week it might still possible to human-trigger. Past observations were concentrated to north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
A weak layer of surface hoar sits 50-100 cm deep, within the range for human-triggering. Over the past week, large human-triggered avalanches have released on this layer. As more areas approach critical loading from additional snow and wind, human-triggering remains likely.
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deep persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
Around 60 to 80 cm of snow overlies a weak layer of surface hoar. This layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but it may exist on all aspects and at all elevations. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. Cornices have grown large and loom over many ridge lines, a failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
The recent storm delivered up to 25 cm in the north of the region and up to 50 cm in the south of the region. The new snow is not expected to bond well with previous surfaces which may consist of surface hoar and a sun crust on steep solar aspects. Assess the bond of the storm snow with the old surface and travel conservatively.
A weak layer of surface hoar is buried 60-100 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
A weak layer of surface hoar is buried 60-120 cm deep and is still possible to human-trigger. Over the past week, large avalanches have been observed extensively across the region. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
Multiple surface hoar layers have been buried by successive storm events and have shown continued reactivity to human triggering. These layers can be found buried 35-50 cm, 70-120 cm, and 110-160 cm below the surface. These layers continue to produce human triggered avalanches, some of which have been remotely-triggered. These weak layers are most problematic at treeline elevations where the surface hoar is well preserved.
The deep persistent layer is still a concern, especially in shallow snowpack areas. A large cornice trigger could also be enough to weak up this layer.
Around 30 to 60 cm of snow overlies a weak layer of surface hoar. This layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but it may exist on all aspects and at all elevations. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Wind slabs may be found on all aspects in steep, alpine terrain. The wind has been blowing from the northeast, which is atypical. You may find wind slabs in terrain features that don't typically have them. These slabs could remain touchy, as they may overly a weak layer of surface hoar.
Loose wet avalanche activity is most likely during the heat of the day when clear skies prevail. Avoid overhead exposure on sun-exposed slopes as the snowpack heats up. Note that cornices are also large and could release during daytime heating.
Wind slabs may be found on all aspects in steep, alpine terrain. The wind has been blowing from the northeast, which is atypical. You may find wind slabs in terrain features that don't typically have them. These slabs could remain touchy, as they may overly a weak layer of surface hoar.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. Cornices have grown large and loom over many ridge lines, a failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
The snowpack will undergo a rapid change as the freezing level rises and clear skies prevail. For Sunday, loose wet avalanche activity is most likely during the heat of the day on sun-exposed slopes. Cornices will also weaken with the warming trend.
Multiple surface hoar layers have been buried by successive storm events and have shown continued reactivity to human triggering. These layers can be found buried 35-50 cm, 70-120 cm, and 110-160 cm below the surface. These weak layers are most problematic at treeline elevations where the surface hoar is well preserved. Rapid warming is expected to increase the likelihood of triggering deeper layers on Sunday.
This layer is still out there, and is most concerning in shallow, rocky areas.
The snowpack will undergo a rapid change as the freezing level rises and clear skies prevail. For Sunday, loose wet avalanche activity is most likely during the heat of the day on sun-exposed slopes.
The snowpack will undergo a rapid change as the freezing level rises and clear skies prevail. For Sunday, loose wet avalanche activity is most likely during the heat of the day on sun-exposed slopes. Cornices will also weaken with the warming trend.
Rapidly rising temperatures and intense solar radiation may initiate wet loose avalanches and weaken cornices. This activity is likely to be most prominent on steep slopes that receive direct day-time solar radiation (slopes that face south through west). Minimize exposure to steep, sun-exposed slopes and cornices on Sunday.
A weak layer of surface hoar is buried 50-100 cm deep. Past observations indicate the problem is most likely to be found on north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
An atypical loading pattern with wind from the northeast has formed wind slabs on terrain features that may not often have them. Use extra caution as you approach steep slopes in exposed terrain, particularly near ridge lines.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"da965","text":"Recent wind has blown from the northeast, forming wind slabs in south to southwest terrain features.
Strong solar radiation may trigger a natural wet loose avalanche cycle on steep solar aspects.
A weak layer of surface hoar is buried 60-100 cm deep. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
Rising temperatures and intense solar radiation may initiate wet loose avalanches and weaken cornices. Minimize exposure to steep, sun-exposed slopes and cornices.
Triggering wind slab avalanches remains possible after strong northeast wind formed slabs in atypical terrain features last week. These slabs could remain touchy, as they may overly a weak layer of surface hoar.
A weak layer of surface hoar is buried 50-100 cm deep. Past observations indicate the problem is most likely to be found on north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
Triggering wind slab avalanches remains possible after strong northeast wind formed slabs in atypical terrain features last week. These slabs could remain touchy, as they may overly a weak layer of surface hoar.
A weak layer of surface hoar sits 50-100 cm deep, within the range for human-triggering.
This layer is still out there, and is most concerning in shallow, rocky areas.
Rapidly rising temperatures and intense solar radiation may initiate wet loose avalanches and weaken cornices. This activity is likely to be most prominent on steep slopes that receive direct day-time solar radiation (slopes that face south through west). Minimize exposure to steep, sun-exposed slopes and cornices.
Sunny weather will cause wet loose avalanches on steep sun-exposed slopes. It could also weaken cornices.
Multiple buried surface hoar layers have shown continued reactivity to both human and natural triggers. These weak layers are most problematic at treeline elevations where the surface hoar remains preserved.
Triggering wind slab avalanches remains possible after strong northeast wind formed slabs in atypical terrain features last week. Use extra caution as you approach steep slopes in exposed terrain, particularly near ridge lines.
A weak layer of surface hoar is buried 60-120 cm deep and is still sensitive to triggering in specific areas. Although this problem can be found on all aspects and elevations, north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
Multiple surface hoar layers have been buried by successive storm events and have shown continued reactivity to human triggering. These layers can be found buried 35-50 cm, 70-120 cm, and 110-160 cm below the surface. These weak layers are most problematic at treeline elevations where the surface hoar is well preserved. Rapid warming is expected to increase the likelihood of triggering deeper layers.
In the north of the region (e.g. Duffey, Hurley, Gold Bridge), a deep persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine.
This layer is still out there, and is most concerning in shallow, rocky areas.
A weak layer of surface hoar exists 40 to 80 cm below the surface and has produced a few large avalanches over the past few weeks. The problem seems most prevalent on northwest to northeast aspects between 1700 m and 2100 m. While the likelihood of triggering a persistent slab avalanche is dropping, there is still some uncertainty about where and for how long this problem will persist.
Loose wet avalanche activity is most likely during the heat of the day on sun-exposed slopes. Cornices will also weaken with the warming trend.
Multiple surface hoar layers have been buried by successive storm events and have shown continued reactivity to human triggering. These layers can be found buried 35-50 cm, 70-120 cm, and 110-160 cm below the surface. These weak layers are most problematic at treeline elevations where the surface hoar is well preserved. Rapid warming is expected to increase the likelihood of triggering deeper layers.
Modest air temperature and sunny skies combine to weaken the snow surface. As this occurs, loose wet avalanche activity may result. The highest likelihood of this occurring is during the heat of the day on sun-exposed slopes. Note that the same warming trend also weakens cornices, so best to stay well back from them on ridges and avoid travelling beneath them.
Modest air temperature and sunny skies combine to weaken the snow surface. As this occurs, loose wet avalanche activity may result. The highest likelihood of this occurring is during the heat of the day on sun-exposed slopes. Note that the same warming trend also weakens cornices, so best to stay well back from them on ridges and avoid travelling beneath them.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Weak faceted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Weak faceted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Recent moderate to strong wind blowing from a variety of directions has formed wind slabs on all aspects.
Recent moderate to strong wind blowing from a variety of directions has formed wind slabs on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9e6ap","text":"
ingering windslabs from recent moderate to strong northeast winds may be still reactive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g63i","text":"
Weak faceted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead. Additionally a weak layer of surface hoar sits 50-100 cm deep, within the range for human-triggering.
A weak layer of surface hoar is buried 60-120 cm deep and is still sensitive to triggering in specific areas. Although this problem can be found on all aspects and elevations, north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
In the north of the region (e.g. Duffey, Hurley, Gold Bridge), a deep persistent weak layer of faceted grains near the ground presents a lingering concern on shallow rocky slopes.
Loose wet avalanche activity is most likely during the heat of the day when clear skies prevail. Avoid overhead exposure on sun-exposed slopes as the snowpack heats up. Note that cornices are also large and could release during daytime heating.
A weak layer of surface hoar crystals is buried around 30 to 60 cm and has been reactive to both human and natural triggers. This weak layer is most problematic in sheltered terrain at treeline elevations, where the surface hoar remains preserved.
The deep persistent layer is still a concern, especially in shallow snowpack areas. A large cornice trigger could also be enough to weak up this layer.
Recent strong north and east winds may have created fresh wind slabs in the lee of terrain features. These are likely thin but may be most reactive where they sit on a crust. Expect new snow and moderate to strong winds on Sunday to further promote new wind slab formation.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Weak faceted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead. Additionally a weak layer of surface hoar sits 50-100 cm deep, within the range for human-triggering.
A weak layer of surface hoar is buried 60-120 cm deep and is still sensitive to triggering in specific areas. Although this problem can be found on all aspects and elevations, north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
Aging wind slabs exist on south, southwest, and west aspects. More recent slabs in steeper leeward features at ridgecrest may still react to the weight of a person or machine.
The deep persistent layer is still a concern, especially in shallow snowpack areas. A large cornice trigger could also be enough to weak up this layer.
A weak layer of surface hoar crystals is buried around 30 to 60 cm and has been reactive to both human and natural triggers. This weak layer is most problematic in sheltered terrain at treeline elevations, where the surface hoar remains preserved.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Strong winds have drifted recent snow into wind slabs that are possible to trigger, especially where the slabs overly a weak layer of surface hoar.
Loose wet slides will start in the PM with daytime warming.  Steep solar slopes especially in thinner areas will be places to avoid.  Any small slide may step down to the deeper basal layers.
Weak faceted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
ind slabs seem to be everywhere. They are most concerning for human triggering in steep, convex and unsupported terrain.
Previous wind events have loaded dense wind slab over a weak layer of surface hoar. Recent warm temperatures have likely promoted bonding of this layer and there is uncertainty around whether it is still sensitive to triggering.
Weak faceted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Weak faceted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
The deep persistent layer is still a concern, especially in shallow snowpack areas. A large cornice trigger could also be enough to weak up this layer.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Previous wind events have loaded dense wind slab over a weak layer of surface hoar. Recent warm temperatures have likely promoted bonding of this layer and there is uncertainty around whether it is still sensitive to triggering.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
This problem applies to the areas around Wells, BC, that got more than 30 cm of new snow Sunday into Monday. In all areas that got more than 20 cm of new snow, watch for fresh storm slabs, the new snow may be resting on a variety of potential weak layers. These slabs could be surprisingly sensitive.
This problem applies to the areas around Wells, BC, that got more than 30 cm of new snow Sunday into Monday. In all areas that got more than 20 cm of new snow, watch for fresh storm slabs, the new snow may be resting on a variety of potential weak layers. These slabs could be surprisingly sensitive.
New snow accumulations exposed to strong sunshine will be increasingly likely to shed from steep slopes on Thursday. This may occur naturally or with a human trigger.
Weak faceted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
The deep persistent layer is still a concern, especially in shallow snowpack areas. A large cornice trigger could also be enough to weak up this layer.
In Localized areas that received 25+ cm. of recent convective snow, I would look out for storm slabs that may become reactive to human triggers as the snow settles.
The deep persistent layer is still a concern, especially in shallow snowpack areas. A large cornice trigger could also be enough to weak up this layer.
Weak faceted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
The deep persistent layer is still a concern, especially in shallow snowpack areas. A large cornice trigger could also be enough to weak up this layer.
These deep layers will be stressed with the rapid snow loading. Avoid big terrain on Saturday. If this layer is triggered, expect very large avalanches.
This is our main concern for treeline and alpine areas. Those deep layers are weak and prone to collapsing with any additional load.
Snow is forecast to accumulate throughout the day, and favored areas in the region may see 25+ cm. Moderate southwest winds are expected to increase slab formation in drifted areas.
Avalanche activity on weak layers buried 70-180 cm deep from late November and early December has tapered. However, avalanche control with large explosives has shown evidence that these layers are still capable of producing very large and destructive avalanches. This deep persistent slab problem presents a low likelihood/high consequence scenario, although the likelihood increases in the event of a large load (e.g. an avalanche releasing in the upper snowpack or cornice fall) or as a result of human-triggering from shallow, rocky start zones.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":521,"length":26,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"u
Avalanche activity has tapered on weak layers buried 90-180 cm deep from late November. However, avalanche control with large explosives has shown evidence that these layers are still capable of producing very large and destructive avalanches. This deep persistent slab problem presents a low likelihood/high consequence scenario, although the likelihood increases in the event of a large load (e.g. an avalanche releasing in the upper snowpack or cornice fall) or as a result of human-triggering from shallow, rocky start zones.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":502,"length":26,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"u
There have been recent reports of large avalanches releasing down to weak layers buried 120-200 cm deep from late November. This deep persistent slab problem presents a low likelihood/high consequence scenario, although the likelihood increases in the event of a large load (e.g. an avalanche releasing in the upper snowpack or cornice fall) or as a result of human-triggering from shallow, rocky, start zones.
There have been recent reports of large avalanches releasing down to weak layers buried 120-200 cm deep from early season (Oct/Nov). This deep persistent slab problem presents a low likelihood/high consequence scenario, although the likelihood increases in the event of a large load (e.g. an avalanche releasing in the upper snowpack or cornice fall) or as a result of human-triggering from shallow, rocky, start zones.
There have been recent reports of large avalanches releasing down to weak layers at the bottom of the snowpack. This deep persistent slab problem presents a low likelihood/high consequence scenario. Human-triggering remains possible in shallow rocky start zones.
There have been recent reports of large avalanches releasing down to weak layers buried 120-200 cm deep from late November. This deep persistent slab problem presents a low likelihood/high consequence scenario, although the likelihood increases in the event of a large load (e.g. an avalanche releasing in the upper snowpack or cornice fall) or as a result of human-triggering from shallow, rocky, start zones.
There have been recent reports of large avalanches releasing down to weak layers at the bottom of the snowpack. This deep persistent slab problem presents a low likelihood/high consequence scenario, although the likelihood increases in the event of a large load (e.g. an avalanche releasing in the upper snowpack or cornice fall) or as a result of human-triggering from shallow rocky start zones.
A combination of crusts from late October is buried 40 to 70 cm deep in the snowpack. This problem will most likely be triggered from shallow areas on steep slopes in the alpine.
Triggering large deep persistent slab avalanches is a low likelihood but high consequence problem that is most likely in shallow, rocky start zones. The likelihood of triggering deeper weak layers may increase as the air temperature rises on Sunday and Monday.
riggering large, deep persistent slab avalanches is a low likelihood but high consequence problem that is most likely in shallow, rocky start zones. The likelihood of triggering deeper weak layers may increase as the air temperature rises on Monday
Explosives testing continues to periodically trigger a weak layer of snow at the bottom of the snowpack (the latest being 2 avalanches on January 22, one a size 3.5). If triggered, this deep persistent layer will produce very large and destructive avalanches.
Explosives testing continues to periodically trigger a weak layer of snow at the bottom of the snowpack (the latest being 2 avalanches on January 22, one a size 3.5). If triggered, this deep persistent layer will produce very large and destructive avalanches.
Explosives testing continues to periodically trigger a weak layer of snow at the bottom of the snowpack (the latest being 2 avalanches on January 22, one a size 3.5). If triggered, this deep persistent layer will produce very large and destructive avalanches.
Explosives testing continues to periodically trigger a weak layer of snow at the bottom of the snowpack. Two such occurrences were observed on January 22 up to size 3.5. This deep persistent layer has proven that if triggered, it will produce very large and destructive avalanches.
As recently as Tuesday, explosives testing continues to periodically trigger a weak layer of snow at the bottom of the snowpack. This deep persistent layer has proven that if triggered, it will produce very large and destructive avalanches.
As recently as Tuesday, explosives testing continues to periodically trigger a weak layer of snow at the bottom of the snowpack. This deep persistent layer has proven that if triggered, it will produce very large and destructive avalanches.
This is the bottom 40cm of the snow pack (November crust/facet combo).  Any storm slab that releases has the potential to wake up this layer.
As recently as Tuesday, explosives testing continues to periodically trigger a weak layer of snow at the bottom of the snowpack. Significant new loads from snowfall and rain will weigh heavy on these deep instabilities. Especially where rain saturates down to the basal weak layers, large slab avalanches can be expected Friday.
Cornice grown has been noted in this region along exposed ridgelines, particularly on northeast aspects.
The new load will stress this layer. It will be more prone to avalanches for a day or two. Let it settle and avoid exposure to big terrain.
As recently as Tuesday, explosives testing continues to periodically trigger a weak layer of snow at the bottom of the snowpack, producing very large and destructive avalanches. Significant loading from recent snow, rain and ongoing wind weigh heavily on deep weaknesses near the bottom of the snowpack. If triggered, these layers would produce large avalanches with the potential to run to valley bottom.
The new load will stress this layer. Let it settle and avoid exposure to big terrain.  Any storm slab that releases has the potential to wake up this layer.
Cornices have been reported to be especially large. Cornice collapses become likely in warmer temperatures and/or when the sun is out. The weight of a large cornice dropping could be sufficient to trigger a large avalanche on the slope below.
If the sun comes out with the forecasted warm temps, cornices may begin to sag and fail.
Cornices have been reported to be especially large. Cornice collapses become likely in warmer temperatures and/or when the sun is out. The weight of a large cornice dropping could be sufficient to trigger a large avalanche on the slope below.
The weak basal layers are still a concern. An avalanche that occurred in the past 24 hours was a slide that stepped down to the basal layers and involved the entire snowpack.
Cornices have been reported to be especially large. Cornice collapses become likely in warmer temperatures and/or when the sun is out. The weight of a large cornice dropping could be sufficient to trigger a large avalanche on the slope below.
These will likely trigger slabs below the ridges and possibly trigger the deeper layers. If this happens, expect a very large avalanche.
With the recent loading, this layer may become more active. Triggering is more likely is shallow snowpack areas.
The weak basal layers are still a concern. An avalanche that occurred in the past 24 hours was a slide that stepped down to the basal layers and involved the entire snowpack.
With the recent loading, this layer may become more active. Triggering is more likely is shallow snowpack areas.
Recent loading from new snow and wind has aggravated the deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
Very steep areas will likely see some sluffing and loose dry avalanches. Especially if it sits on a crust.,
Recent loading from new snow and wind has aggravated our region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind scoured, rocky, shallow terrain as suspect. Also avoid big alpine slopes that are threatened by cornices overhead. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind scoured, rocky, shallow terrain as suspect. Also avoid big alpine slopes that are threatened by cornices overhead. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Recent loading from new snow and wind has aggravated the deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
There is a small chance the new load will overload the deep layers. We are expecting a significant rapid loading pulse early in the storm. Sparsely treed areas and thin crossloaded terrain are likely areas to cause trouble.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind scoured, rocky, shallow terrain as suspect. Also avoid big alpine slopes that are threatened by cornices overhead. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
There is a small chance the new load will overload the deep layers. We are expecting a significant rapid loading pulse early in the storm. Sparsely treed areas and thin crossloaded terrain are likely areas to cause trouble.
Recent loading from new snow and wind has aggravated the deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind scoured, rocky, shallow terrain as suspect. Also avoid big alpine slopes that are threatened by cornices overhead. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind scoured, rocky, shallow terrain as suspect. Also avoid big alpine slopes that are threatened by cornices overhead. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":38,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.aval
Consistent dribs and drabs of snow last week accompanied by strong southwest wind has aggravated the deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind scoured, rocky, shallow terrain as suspect. Also avoid big alpine slopes that are threatened by cornices overhead.
Recent loading from new snow and wind has aggravated the deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Recent loading from new snow and wind has aggravated our region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Recent loading from new snow and wind has aggravated our region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
Recent loading from new snow and wind has aggravated our region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
With the recent loading, this layer may become more active. Triggering is more likely is shallow snowpack areas.
Triggering wind slab avalanches remains possible after strong northeast wind formed slabs in atypical terrain features.
Intense solar radiation is expected to initiate wet loose avalanches. This activity will likely be confined to steep slopes that face south through west. Minimize exposure to sun-exposed slopes during periods of strong solar radiation.
Intense solar radiation is expected to initiate wet loose avalanches. This activity will likely be confined to steep slopes that face south through west. Minimize exposure to sun-exposed slopes during periods of strong solar radiation.
Intense solar radiation is expected to initiate loose wet avalanches. This activity will likely be confined to steep slopes that face south through west. Minimize exposure to sun-exposed slopes during periods of strong solar radiation.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Beware of wet loose avalanches releasing naturally on steep slopes exposed to the sun.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Recent loading from new snow and wind has aggravated the region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
Forecast warming may aggravate the region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Recent loading from new snow and wind has aggravated the region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features, or anywhere the snowpack is thin and weak. Cornices have grown large and loom over many ridge lines, a failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Still concern for the weak layer deep in the snowpack. Triggering is more concerning in shallow snowpack areas.
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
The snowpack will undergo a rapid change as the freezing level rises and clear skies prevail. For Sunday, loose wet avalanche activity is most likely during the heat of the day on sun-exposed slopes. Cornices will also weaken with the warming trend.
Weak facetted snow at the near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features or anywhere the snowpack is thin and weak. Cornices have grown large and loom over many ridge lines. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Weak snow at the bottom of the snowpack continues to pose a deep persistent slab avalanche problem. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Recent loading from new snow and wind has aggravated the region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
The snowpack will undergo a rapid change as the freezing level rises and clear skies prevail. For Sunday, loose wet avalanche activity is most likely during the heat of the day on sun-exposed slopes. Cornices will also weaken with the warming trend.
Recent loading from new snow and wind has aggravated the region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
A weak layer of surface hoar is buried 50-100 cm deep and even though avalanche reports decreased over the past week it is still possible to human-trigger. Over the past two weeks, large (size 2-3) natural and human-triggered avalanches have released on this layer. Observations are concentrated to north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deep persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine. The likelihood of triggering this layer may increase over the coming days as the snowpack warms from warm air temperature and sunny skies.
There is uncertainty on whether the weak faceted grains and melt-freeze crusts near the base of the snowpack are still a problem or not. This may vary for mountain to mountain. Should this basal weak layer exist where you travel and be triggered, the consequence of it would be devastating. The most likely spot for a human to trigger it would be in thin rocky terrain. A cornice fall also has the potential of triggering it. The likelihood of avalanche activity on this layer may increase during this warming period.
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deep persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine. The likelihood of triggering this layer may increase over the coming days with an increasing freezing level.
Rising temperatures and intense solar radiation is expected to initiate wet loose avalanches. This activity is likely to be most prominent on steep slopes that receive direct day-time solar radiation (slopes that face south through west). Although with above freezing temperatures, the problem could become more widespread. Minimize exposure to steep, sun-exposed slopes and cornices.
Cornices are large at this time of year and they will undergo rapid weakening during this warming trend. Avoid travelling close to them while on ridges and limit your exposure on slopes beneath them.
There is uncertainty on whether the weak faceted grains and melt-freeze crusts near the base of the snowpack are still a problem or not. This may vary for mountain to mountain. Should this basal weak layer exist where you travel and be triggered, the consequence of it would be devastating. The most likely spot to trigger it would be in thin rocky terrain.
Cornices are large at this time of year and they will undergo rapid weakening during this warming trend. Avoid travelling close to them while on ridges and limit your exposure on slopes beneath them.
As spring-like weather takes over, the likelihood of avalanches releasing on buried weak layers increases.  A few layers of surface hoar may be found around 40 to 90 cm deep and faceted grains may exist near the base of the snowpack. Sporadic destructive avalanches have occurred on the basal faceted grains, predominantly on north through east aspects in alpine terrain. Cornice falls are a possible trigger for deep persistent slab avalanches.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep rocky terrain features or anywhere the snowpack is thin and weak. Cornices have grown large and loom over many ridge lines. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
In the north of the region (e.g. Duffey, Hurley, Goldbridge), a deep persistent weak layer of faceted grains near the ground presents a lingering concern on steep, shallow slopes in the alpine. The likelihood of triggering this layer may increase over the coming days as the snowpack warms from warm air temperature and sunny skies.
A weak layer of surface hoar is buried 60-120 cm deep and is still sensitive to triggering in specific areas. Although this problem can be found on all aspects and elevations, north to east aspects near treeline have been a hot-spot for reactivity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3k532","text":"
Weak facetted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead.
Forecast warming may aggravate the region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
If large cornices release, they can trigger deeper instabilities.
Loose wet avalanche activity is most likely during the heat of the day when clear skies prevail. Avoid overhead exposure on sun-exposed slopes as the snowpack heats up. Note that cornices are also large and could release during daytime heating.
Cornices are large at this time of year and they will undergo rapid weakening during this warming trend. Avoid travelling close to them while on ridges and limit your exposure on slopes beneath them.
Rising temperatures and intense solar radiation is expected to initiate wet loose avalanches. This activity is likely to be most prominent on steep slopes that receive direct day-time solar radiation (slopes that face south through west). Although with above freezing temperatures, the problem could become more widespread. Minimize exposure to steep, sun-exposed slopes and cornices.
Forecast warming may aggravate the region's deep persistent slab problem. Some very large and destructive avalanches have been sporadically failing on deeply buried weak layers, predominantly on north through east aspects in the alpine. Cornice falls are a likely trigger for these slabs.
The sudden rise in temperature and solar radiation can be the trigger for cornices.  If large cornices release, they can trigger deeper instabilities.
Around 60 to 80 cm of snow overlies a weak layer of surface hoar. This layer has been most problematic on northwest to northeast aspects between 1600 m and 2300 m, but it may exist on all aspects and at all elevations. Assess the layer prior to committing to avalanche terrain or adopt a conservative mindset to avoid the problem.
Strong solar radiation may trigger a natural wet loose avalanche cycle on steep solar aspects.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
A weak layer of surface hoar is buried 50-100 cm deep. Past observations indicate the problem is most likely to be found on north, northeast, and east aspects near treeline. This problem has been observed in all but the northern tip of the region, where there is uncertainty around the distribution of this layer.
A weak layer of surface hoar is buried 60-100 cm deep. The distribution of this problem extends to all aspects and elevations, but north to east aspects near treeline have been a hot-spot for reactivity.
Weak facetted snow near the base of the snowpack continues to be a concern. Treat wind-scoured, rocky, shallow terrain as suspect and avoid big alpine slopes that are threatened by cornices overhead. Additionally a weak layer of surface hoar sits 50-100 cm deep, within the range for human-triggering.
As spring-like weather takes over, the likelihood of avalanches releasing on faceted grains near the base of the snowpack increases. Sporadic destructive avalanches have occurred on these basal faceted grains, predominantly on north through east aspects in alpine terrain. Cornice falls are a possible trigger for deep persistent slab avalanches.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
As spring-like weather takes over, the likelihood of avalanches releasing on faceted grains near the base of the snowpack increases. Sporadic destructive avalanches have occurred on these basal faceted grains, predominantly on north through east aspects in alpine terrain. Cornice falls are a possible trigger for deep persistent slab avalanches.
The deep persistent layer is still a concern, especially in shallow snowpack areas. A large cornice trigger could also be enough to weak up this layer.
The deep persistent layer is still a concern, especially in shallow snowpack areas. A large cornice trigger could also be enough to weak up this layer.
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
Weak snow at the bottom of the snowpack hasn't gone away. Evidence of deep persistent slab avalanches has been focused in the Sparwood-Elkford area over the past month. Human triggering is most likely around steep, rocky terrain features or anywhere the snowpack is thin and weak. A failing cornice could initiate a deep persistent slab when it impacts the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fv8to","text":"
ind switching directions has created wind slabs on a variety of aspects.
Fresh storm slabs will likely be widespread and easy to trigger.
Wind switching directions has created wind slabs on a variety of aspects
Storm slabs will likely continue to be reactive, especially in wind loaded areas.
torm slabs in motion may step down to deeper weak layers, resulting in large avalanches.
Recent wind has varied from south to northwest so watch for old and new wind slabs on a variety of aspects, especially at ridge crests and on rollovers.
The new storm snow may show a poor bond to the variety of old snow surfaces its landing on. This may result in a reactive storm slab or small loose dry avalanches from steep terrain. Strong southwest winds may have formed deeper deposits on lee aspects building new and reactive wind slabs in the alpine and in \"alpine-like\" features near treeline, particularly where these slabs sit on top of a crust/facet layer from early November.
Thursday will continue tol be unseasonably warm and sunny. Loose wet avalanche activity is likely in steep terrain.
Watch for freshly formed wind slabs in the alpine, and open \"alpine like\" features at treeline. These slabs may be poorly bonded to underlying crust and surface hoar layers, although the distribution of these layers is uncertain. Surface snow may become reactive with afternoon sun, especially on steep solar aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"54dvn","text":"
There is lots of snow available for recent moderate to strong northwesterly winds to transport into alpine and treeline lee terrain.
The new storm snow is not bonding well to the recent crust. Storm slabs may continue to be reactive to human triggering and loose dry avalanches may occur from steep terrain features. Southwest winds may have formed deeper deposits on lee aspects building new and reactive wind slabs in the alpine and in \"alpine-like\" features near treeline, particularly where these slabs sit on top of a crust.
Watch for freshly formed wind slabs in the alpine, and open \"alpine like\"  features at treeline. These slabs may be poorly bonded to the underlying snow. Surface snow may become reactive with the afternoon sun, especially on steep solar aspects.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ffgev","text":"10 cm of new snow and moderate northwest winds on Monday night may create fresh wind slabs on lee features at treeline and above.
Recent strong southerly winds have likely redistributed snow at upper elevations, building new wind slabs on leeward northerly facing terrain. The warm air coupled with solar radiation from Wednesday may have promoted rapid settlement and accelerated slab development in the upper snowpack on other aspects and elevations. Be especially cautious where new snow may sit over a crust (south aspects) or surface hoar (wind-sheltered areas around treeline).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":218,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
As the temperature inversion rebuilds Friday, above freezing alpine temperatures and direct sun will moisten snow and deteriorate snow stability, particularly on steep solar slopes with direct sun.
15 to 50 cm of storm snow fell across the region over the last few days.  Careful with the new storm snow, especially at upper elevations. Large  human triggered storm slabs remain likely.
Recent wind has varied from south to northwest so watch for old and new wind slabs on a variety of aspects, especially at ridge crests and on rollovers.
A sharp rise in temperature coupled with solar radiation, will promote rapid settlement and accelerated slab development in the recent storm snow Tuesday afternoon. Be especially wary of steep south aspects at upper elevations, where recent snow is both receiving direct sun and may be sitting on a crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":71,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1opns","text":"10 cm of new snow and moderate northwest winds on Monday night may create fresh wind slabs on lee features at treeline and above.
Cornice falls or smaller avalanches in motion may have the potential to step-down to these deeper layers, producing large, destructive avalanches.
A sharp rise in temperature coupled with solar radiation on Tuesday afternoon, will promote rapid settlement and accelerated slab development in the recent storm snow. Be especially cautious where new snow may sit over a crust (south aspects) or surface hoar (wind sheltered areas around treeline).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":92,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
Lingering wind slabs may remain surprisingly reactive to human triggers in areas where they are sitting on top of a layer of small surface hoar.
Wind switching directions has created wind slabs on a variety of aspects.
Recent strong southerly winds have likely redistributed snow at upper elevations, building new wind slabs on leeward northerly facing terrain. The warm air coupled with solar radiation from Wednesday may have promoted rapid settlement and accelerated slab development in the recent storm snow on other aspects and elevations. Be especially cautious where new snow may sit over a crust (south aspects) or surface hoar (wind sheltered areas around treeline).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":218,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
30 to 70 cm of storm snow fell across the region over the last few days. Careful with the new storm snow, especially at upper elevations. Large human triggered storm slabs remain likely. The new snow may be resting on surface hoar and facets which could set up a scenario where storm slabs remain surprisingly touchy.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d6dhf","text":"
A sharp rise in temperature coupled with solar radiation on Tuesday afternoon, will promote rapid settlement and accelerated slab development in the recent storm snow. Be especially cautious where new snow may sit over a crust (south aspects) or surface hoar (wind sheltered areas around treeline).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":92,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=solar#s
Watch for loose wet avalanche activity especially on steep sun exposed slopes in the afternoon. Pinwheeling is a great indicator of a warming snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":119,"length":9,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabi
Triggering wind slab avalanches remains possible at higher elevations, especially on freshly wind-loaded terrain features. New wind slabs are likely to form during periods of strong wind on Monday.
Northerly aspects in the alpine may see deeper pockets of wind slab where the old storm snow was redistributed. A sharp rise in temperature coupled with solar radiation will promote rapid settlement and accelerated slab development on all aspects at treeline and above. Be especially wary of steep south aspects at upper elevations, where recent snow sitting on a crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":182,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f152","text":"Things are looking HOT up high for the next couple days. Naturally triggered wet loose avalanches are possible on all aspects and especially likely on solar aspects. Overhead hazards will be a primary concern.
Although the alpine air temperature isn't as warm as previous days, loose wet avalanches may still be observed on steep sun exposed slopes in the afternoon.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2ule5","text":"Things are looking HOT up high for the next couple days. Naturally triggered wet loose avalanches are possible on all aspects and especially likely on solar aspects. Overhead hazards will be a primary concern.
Initially, the recent snow was not bonding well to the crust. I suspect the bond will strengthen, however; storm slabs may be reactive to human triggering and loose dry avalanches may occur from steep terrain features. Southwest winds may have formed deeper deposits on lee aspects building new and reactive wind slabs in the alpine, particularly where these slabs sit on top of a crust.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9snuv","text":"Things are looking HOT up high for the next couple days. Naturally triggered wet loose avalanches are possible on all aspects and especially likely on solar aspects. Overhead hazards will be a primary concern.
Wet-loose avalanches will continue to be a problem where the snowpack is moist or wet, or as forecasted rain begins to saturate the snowpack.
Northerly aspects in the alpine may see deeper pockets of fresh wind slab where the old storm snow was redistributed. Warm temperatures and solar radiation will continue the rapid settlement and accelerated slab development on all aspects at treeline and above.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":174,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
The hot weather up high over the next couple days may awaken this layer. Cornice falls, or smaller avalanches are especially likely to trigger a large avalanche on this layer. This layer is most likely to be reactive to human triggers on south facing slopes and in shallow, rocky, snowpack areas in the alpine.
Periods of heavy snowfall combined with strong winds are expected to form reactive storm slabs. These slabs will be more sensitive to triggering and larger in size in areas where the wind has transported the snow into deeper, more cohesive drifts. Natural triggers from heavy snowfall, wind, and cornice falls are a concern with this rapid load.
Recent strong southerly winds have likely redistributed snow at upper elevations, building new wind slabs on leeward northerly facing terrain. The warm air coupled with solar radiation may have promoted rapid settlement and accelerated slab development in the recent storm snow on other aspects and elevations. Be especially cautious where new snow may sit over a crust (south aspects) or surface hoar (wind sheltered areas around treeline).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":203,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
Beneath 30-70 cm of snow from last weekend's storm, a layer of surface hoar and facets may linger as a persistent slab problem in isolated areas. The bigger concern is for a crust/facet layer that is buried closer to the ground from early November. Although it may be harder to trigger, the presence of this weak crust/facet combination appears more widespread. Large persistent slab avalanches may be possible to trigger on Thursday.
Recent wind has varied from south to northwest so watch for old and new wind slabs on a variety of aspects, especially at ridge crests and on rollovers.
A sharp rise in temperature coupled with solar radiation will promote rapid settlement and accelerated slab development in the recent storm snow. Be especially cautious where new snow may sit over a crust (south aspects) or surface hoar (wind sheltered areas around treeline).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":70,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
A sharp rise in temperature coupled with solar radiation on will promote rapid settlement and accelerated slab development in the recent storm snow. Be especially cautious where new snow may sit over a crust (south aspects) or surface hoar (wind sheltered areas around treeline).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":73,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=solar#s
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c7ai3","text":"Lingering wind slabs may remain surprisingly reactive to human triggers in areas where they are sitting on top of a layer of small surface hoar.
Expect storm slabs to become increasingly reactive as new snow accumulates through the day Tuesday and Wednesday. Deepest deposits will be in the lee of terrain features with the wind blowing strong to extreme from the southwest. Lower elevations may see loose wet avalanches where rain is possible.
There is currently 90-120 cm of snow sitting on top of weak a layer of sugary facets that developed above a firm crust which formed in early November. Warm temperatures at upper elevations late Tuesday and through Wednesday may increase the likelihood triggering deep persistent slabs.
Persistent slab avalanches ran during the storm and the coming warm temperatures are combining with direct sunshine. This is combo that could easily lead to cornice failure and natural triggering of very large persistent slab avalanches running on the November crust.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9snuv","text":"Things are looking HOT up high for the next couple days. Naturally triggered wet loose avalanches are possible on all aspects and especially likely on solar aspects. Overhead hazards will be a primary concern.
A recent large persistent slab avalanche suggests that the snowpack may be stiffening over a buried crust that formed in early November. Large avalanches may be possible to trigger on Thursday. We have limited information about the prevalence of this snowpack structure in the region.
Natural storm slab avalanche activity will likely decrease, however; they could be reactive to human triggers. These will be more sensitive to triggering and larger in size in areas where strong winds have transported the snow into deeper slabs. Reverse loading may build wind slabs on opposite slopes in the alpine due to East winds on Thursday.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":246,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","muta
Up to 20 cm of new snow is forecast to accumulate by late Friday in favored areas. Moderate to strong southwest winds may redistribute the new snow into reactive slabs on lee features.
Recent strong southerly winds have likely redistributed snow at upper elevations, building new wind slabs on leeward northerly facing terrain. The warm air coupled with solar radiation from Wednesday may have promoted rapid settlement and accelerated slab development in the upper snowpack on other aspects and elevations. Be especially cautious where new snow may sit over a crust (south aspects) or surface hoar (wind-sheltered areas around treeline).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":218,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
ecent fresh snow and strong southwest winds have likely formed new wind slabs in lee terrain.
Warming temperatures will exacerbate this problem. 15 to 50 cm of storm snow fell across the region over the last few days which has been formed into slabs by strong southwest wind. Large human triggered wind slabs remain likely. The new snow may be resting on surface hoar and facets which could set up a scenario where wind slabs remain surprisingly touchy.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ekumt","text":"
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2ule5","text":"Things are looking HOT up high for the next couple days. Naturally triggered wet loose avalanches are possible on all aspects and especially likely on solar aspects. Overhead hazards will be a primary concern.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f152","text":"Things are looking HOT up high for the next couple days. Naturally triggered wet loose avalanches are possible on all aspects and especially likely on solar aspects. Overhead hazards will be a primary concern.
Storm slabs will be widespread and very reactive due to significant snow amounts and strong winds.
Recent wind from south to southwest has likely formed fresh wind slab at upper elevations in the immediate leeward side of slopes and terrain features. There may be some older wind slab lingering on southerly aspects so paying attention to clues while travelling is key.
Wind slab may exist and be reactive on lee and cross-loaded features in the alpine or in \"alpine-like\" features at treeline. Forecast East winds on Thursday may reverse load oposite slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":39,"length":29,"key":0},{"offset":160,"length":14,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":"LINK","muta
As the temperature inversion rebuilds Friday, above freezing alpine temperatures and direct sun will moisten snow and deteriorate snow stability, particularly on steep solar slopes with direct sun.
Rapid warming and sunshine will likely release loose wet avalanches. Pinwheeling is a good indicator of this type of instability.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":90,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
In the north of the region (e.g., Duffey Lake), a weak layer of sugary faceted grains around a hard melt-freeze crust sits near the base of the snowpack. Avoid slopes with overhead hazards like cornices. If they fail during the warm-up they could trigger the slope below. This problem does not exist in the south of the region.
Although the alpine air temperature isn't as warm as previous days, loose wet avalanches may still be observed on steep sun exposed slopes in the afternoon.
The alpine temperature inversion remains a notable concern for loose snow avalanches on steep solar and extreme alpine terrain.  This heat will deteriorate the snow more if winds are light and variable.
Wet loose avalanches will become increasingly likely as temperatures rise and the sun hits the snow.
30-70 cm of snow fell late last week with the highest amounts in the south. Strong southwest winds have built deep wind slabs at treeline and alpine elevations on lee and crossloaded slopes.
A crust exists near the base of the snowpack. A lack of decisive data on this layer is keeping it on our radar for now. While it's been showing some results in snowpack tests in some areas, most reports describe an improving bond to the overlying snow. Potential for full depth avalanches may exist in areas where weak, sugary facets overly this crust, especially in areas of smooth ground cover such as scree slopes, grassy slopes, or rock slabs.
The alpine temperature inversion remains a notable concern for loose snow avalanches on steep solar and extreme alpine terrain.  This heat will deteriorate the snow more if winds are light and variable.  East of the divide temperatures will be warm to valley botom.
A sharp rise in temperature coupled with solar radiation will promote rapid settlement and accelerated slab development in the recent storm snow. Be especially wary of steep south aspects at upper elevations, where recent snow is both receiving direct sun and may be sitting on a crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":70,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
Although the alpine air temperature isn't as warm as previous days, loose wet avalanches may still be observed on steep sun exposed slopes in the afternoon.
Up to 20 cm fresh snow accumulated (in localized areas) with moderate winds. In some areas it sits over a rain crust, and other areas possibly surface hoar. This problem is likely confined to ridgelines and alpine features.
The hot weather up high over the next couple days may awaken this layer. Cornice falls, or smaller avalanches are especially likely to trigger a large avalanche on this layer. This layer is most likely to be reactive to human triggers on south facing slopes and in shallow, rocky, snowpack areas in the alpine.
It's anticipated that Wednesday will be unseasonably warm and sunny. Loose wet avalanche activity is expected to be widespread.
Over 100 cm of new snow has fallen in the White Pass area since Monday night. Though Thursday offers a short break from the storm, be aware that storm slabs may still be very reactive, especially in wind loaded areas. More snow is on the way for Friday and Saturday with strong winds, which will keep the hazard elevated and storm slabs likely.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8bv1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9jmva","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"agmit","text":"
A crust sits near the base of the snowpack. There is potential for large avalanches to be triggered on this layer by:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4qm7v","text":"large loads such as cornice falls or smaller loose wet avalanches","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c5r8t","text":"human traffic in thin, rocky areas in the alpine","type":"u
It's anticipated that Wednesday will be unseasonably warm and sunny. Loose wet avalanche activity is expected to be widespread.
Thursday will continue to be unseasonably warm and sunny. Loose wet avalanche activity is expected in steep terrain.
Storm and wind slab problems likely exist at elevations above the rain crust. They are most concerning around Blue River and Valemount where 30+ cm of snow may sit above crusts and a widespread layer of large surface hoar. There was less snow in other areas, but strong wind would have left reactive slabs on wind-loaded slopes and on steep convexities.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":209,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
Continued stormy weather means that storm slabs will likely continue to be reactive, especially in wind loaded areas. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5sq3h","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"80pk3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ahj8f","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8bv1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9jmva","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"agmit","text":"
10-20 cm of new snow Thursday night and Friday accompanied by strong wind from the southwest will build fresh storm slabs. They may be more reactive on leeward slopes (NE-SE)  where the wind has deposited deeper and stiffer slabs. Loose dry sluffing from steeper slopes and terrain features.
Rapid warming and sunshine may release loose wet avalanches. Pinwheeling is a good indicator of this type of instability.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":82,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
Watch for loose wet avalanche activity especially on steep sun exposed slopes in the afternoon. Pinwheeling is a great indicator of a warming snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":119,"length":9,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabi
Watch for loose wet avalanche activity especially on steep sun exposed slopes in the afternoon. Pinwheeling is a great indicator of a warming snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":119,"length":9,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabi
Storm slabs will likely be reactive and require patience and time to settle and stabilize. These may be extra touchy on lee slopes where wind loading has built deeper slabs. Simple, low angle terrain away from overhead hazard is a good choice right now.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":120,"length":10,"key":0}],"data":{}},{"key":"58qce","text":"Loose-dry sluffing from steep terrain is likely, especilly when the sun comes out.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LI
Watch for loose wet avalanche activity especially on steep sun exposed slopes in the afternoon. Pinwheeling is a great indicator of a warming snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":119,"length":9,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabi
Above freezing temperatures and periods of heavy rain may trigger loose wet avalanches. Pinwheeling and rollerballs are good indicators of this type of instability. Avoid steep slopes with saturated snow, as wet loose avalanches can be surprisingly destructive due to their density.
At upper elevations where snow dry snow prevails, winds have redistributed dry snow forming pockets of wind slabs in lee features and below ridgelines. Expect new slabs to develop as the incoming storm brings flurries and more wind.
Previously strong winds deposited hard wind slabs on lee and cross-loaded features at upper elevations. You may encounter a remaining stubborn wind slab in isolated areas in the alpine and in \"alpine-like\" features near treeline, particularly where these slabs sit on top of a crust/facet layer from early November.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":39,"length":10,"key":0}],"data":{}}],"entityMap":{"0":
Previously strong winds deposited hard wind slabs on lee and cross-loaded features at upper elevations. You may encounter a remaining stubborn wind slab in isolated areas in the alpine and in \"alpine-like\" features near treeline, particularly where these slabs sit on top of a crust/facet layer from early November.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":39,"length":10,"key":0}],"data":{}}],"entityMap":{"0":
ncreasing winds impacting 10-30 cm of soft surface snow may blow into unstable slabs. In certain areas this snow may be poorly bonded to underlying layers of surface hoar and/or crusts. The problem is more likely found in northern parts of the region (e.g. Golden).
40-90 cm of new snow with strong winds from the southwest have formed reactive storm slabs at upper elevations. These will be more sensitive to triggering and larger in size in areas where strong winds have transported the snow into deeper slabs. Natural triggers from heavy snowfall, wind, and cornice falls are a concern.
A weak layer of surface hoar down 50-100 cm. has been reactive to human triggers, resulting in large avalanches.
At upper elevations where snow dry snow prevails (sheltered upper treeline and alpine terrain), winds have redistributed dry snow forming pockets of wind slabs in lee features and below ridgelines.
Even with 10 cm of new snow over the day, slabs of any concern will be isolated to wind loaded pockets in lee terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cga6c","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"94gq","text":"You may see some loose dry sluffing under your skis in steep terrain.
As the freezing level gradually drops below 1000 m, new snow with moderate southwest winds are forecast to continue. Where snow accumulates, winds may drift the available snow into shallow wind slabs on lee and cross-loaded features in the alpine or in \"alpine-like\" features at treeline. Avoid areas that are prone to human-triggering, such as steep, rocky, or convex features near ridge crests and roll-overs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":189,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Strong to extreme wind forecast for overnight Monday and into Tuesday may create new and reactive wind slabs on lee and cross-loaded features in the alpine and in \"alpine-like\" features near treeline, particularly where these slabs sit on top of a crust/facet layer from early November.
Look for slab development (at colder, upper elevations) as wind redistributes flurries accumulating throughout the region. The most reactive slabs will be in wind-loaded areas or around ridges and convex rolls. Surface hoar growth was observed over the last few days, be wary of areas where snow forms a slab over surface hoar.
10-15 cm of new snow Monday night and strong southerly winds are expected to form fresh wind slabs reactive to human triggers at treeline and above.
Rain increasingly stresses the snowpack by adding load and heat. Avalanche hazard will increase as more and more rain saturates the snowpack.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9f1r","text":"15-25 cm of new snow in the Pine Pass area has formed LOCALIZED storm slabs reactive to human triggers. Conservative terrain choices will be especially important in areas that received more than 15 cm. of new snow.","type":"unstyled","depth":0,"inlineSty
A crust exists near the base of the snowpack, and weak, sugary facets have been observed over this crust. We have a lack of decisive data on this layer so we're keeping it on our radar for now. While it's been showing some results in snowpack tests in some areas, most reports describe an improving bond to the overlying snow. Although we don't think it presents a problem, without more information we're reluctant to throw it out. The most likely trigger spots are terrain areas with smooth ground cover such as scree slopes, grassy slopes, or rock slabs.
Keep a look out for lingering slabs around steep rolls and extreme terrain. Cornices might still be a bit touchy.
20-60 cm of new snow with strong winds from the southwest formed reactive storm slabs at upper elevations. These will be more sensitive to triggering and larger in size in areas where strong winds have transported the snow into deeper slabs. Give cornices plenty of space as the grew in the storm and may be more reactive than expected.
Continued stormy weather means that storm slabs will likely continue to be reactive to human triggers, especially in wind loaded areas. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5sq3h","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"80pk3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ahj8f","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8bv1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9jmva","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"agmit","text":"
Expect increasing slab development as wind redistributes flurries accumulating throughout the region. The most reactive slabs will be in wind-loaded areas or around ridges and convex rolls.
20-40 cm of new snow sits on a weak layer of surface hoar. This new snow combined with southwest winds will develop slabs that will become increasingly reactive through the day.
As the freezing level gradually drops below 1000 m, new snow with moderate southwest winds are forecast to continue. Where snow accumulates, winds may drift the available snow into shallow wind slabs on lee and cross-loaded features in the alpine or in \"alpine-like\" features at treeline. Avoid areas that are prone to human-triggering, such as steep, rocky, or convex features near ridge crests and roll-overs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":189,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
The new snow is not expected to bond well with old surfaces such as crusts and surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":16,"length":3,"style":"BOLD"}],"entityRanges":[{"offset":79,"length":13,"key":0}],"data":{}},{"key":"6pint","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqe17","text":"Small loose dry sluffing may be observed out of steep terrain, especially with human traffic. Look for signs of instability like shooting cracks to identify where the snow is starting to show slab character.  Small storm slabs may be triggerable in freshly wind loaded lee features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":129,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"1":{"type":"L
Rain has saturated the snowpack. With freezing levels spiking above mountain top late Monday and ongoing rain, a wet loose hazard will persist as long as the snowpack is moist or wet.
Where dry flurries have dusted the highest elevations, look for rogue slabs in alpine terrain.
A crust sits near the base of the snowpack. On the one hand, there hasn't been any associated avalanche activity in weeks. On the other hand, it's surrounded by weak crystals and still producing hard results in snowpack tests. Although we don't think it presents an avalanche problem as we enter a cooling trend, we are skeptical where temperatures remain elevated in the northeast of the region. If it were to rear its head, it would most likely be in shallow, rocky areas in the alpine.
Moderate winds from the south have drifted snow into slabs on lee features that may be possible to trigger at upper elevations. Avoid areas that are prone to human-triggering, such as steep, rocky, or convex features near ridge crests and roll-overs.
Periods of heavy snowfall combined with strong winds are expected to form reactive storm slabs at upper elevations. These slabs will be more sensitive to triggering and larger in size in areas where strong winds have transported the snow into deeper, more cohesive drifts. Natural triggers from heavy snowfall, wind, and cornice falls are a concern with this rapid load.
Recent strong southerly winds have likely redistributed dry snow at upper elevations, look out for rogue pockets of wind slabs in lee features and below ridgelines. Expect new slabs to form as the incoming storm brings new snow and wind.
So here's the story... A crust sits near the base of the snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fd13i","text":"On the one hand, there hasn't been any associated avalanche activity in weeks.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eaqap","text":"On the other hand, it's surrounded by weak crystals and still producing hard results in snowpack tests.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b2g2t","text":"Although we don't think it presents an avalanche problem under the current conditions, we're reluctant to throw it out altogether, especially with new snow on the horizon. If it were to rear its head, it would most likely be in shallow, rocky areas in the alpine.","type":"unstyled","depth":0,"inlineStyle
A wet and warm storm will drop around 10 cm by Monday morning and upwards of 25-50 cm through the day. Along with strong, southwesterly winds and spiking freezing levels, expect rapid storm slab development and avalanche hazard increasing through the day.
Strong southwest wind is forecast for the rest of the week along with a bit of new snow. Use caution near ridges and avoid leeward slopes, particularly where you find stiff wind affected snow. Loose-dry sluffing from steep terrain features.
An additional 20-30 cm of snow is forecast overnight and into Monday with strong winds from the south and southwest. The new snow is expected to form reactive storm slabs at upper elevations. These slabs will be more sensitive to triggering and larger in size in areas where strong winds have transported the snow into deeper, more cohesive drifts. Natural triggers from heavy snowfall, wind, and cornice falls are a concern with this rapid load.
Previously strong winds deposited wind slabs on lee and cross-loaded features. Although triggering is unlikely, wind slabs may still exist in isolated areas in the alpine and in \"alpine-like\" features near treeline, particularly where these slabs sit on top of a crust/facet layer from early November.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":34,"length":10,"key":0}],"data":{}}],"entityMap":{"0":
Previously strong winds deposited wind slabs on lee and cross-loaded features. Although triggering is unlikely, wind slabs may still exist in isolated areas in the alpine and in \"alpine-like\" features near treeline, particularly where these slabs sit on top of a crust/facet layer from early November. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":34,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
As the freezing level gradually drops below 1000 m, scattered flurries with moderate southwest winds are forecast to continue. Where snow accumulates, winds may drift the available snow into shallow wind slabs on lee and cross-loaded features in the alpine or in \"alpine-like\" features at treeline. Avoid areas that are prone to human-triggering, such as steep, rocky, or convex features near ridge crests and roll-overs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":199,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f046h","text":"Recent winds from a variety of directions have reverse loaded some slopes, creating wind slabs on typically windward features at treeline and above.
Storm slabs have been reactive to human triggering, especially in areas where the wind has stiffened the slab.  This may present as a wind slab issue in specific terrain at higher elevations, but sheltered lower elevations aren't exempt.
The new snow is not expected to bond well with old surfaces such as crusts and surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":16,"length":3,"style":"BOLD"}],"entityRanges":[{"offset":79,"length":13,"key":0}],"data":{}},{"key":"8dhfr","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9353p","text":"Small loose dry sluffing may be observed out of steep terrain, especially with human traffic. Look for signs of instability like shooting cracks to identify where the snow is starting to show slab character.  Small storm slabs may be triggerable in freshly wind loaded lee features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":129,"length":15,"key":1}],"data":{}},{"key":"aap6g","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"1":{"type":"L
The new snow may show a poor bond to the variety of old snow surfaces its landing on. This may result in a reactive storm slab or small loose dry avalanches from steep terrain. Strong southwest winds may have formed deeper deposits on lee aspects building new and reactive wind slabs in the alpine and in \"alpine-like\" features near treeline, particularly where these slabs sit on top of a crust/facet layer from early November.
Loose dry avalanches are likely where the sun touches dry snow for the first time. You may also find small pockets of triggerable storm slab near in wind loaded leeward features.
10-20 cm of new snow sits on a weak layer of surface hoar.  Expect this layer to be most reactive in wind loaded terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":45,"length":12,"key":0}],"data":{}},{"key":"4dasn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bnsik","text":"Some areas near Blue River likely have up to 40 cm of new snow on this layer, and it will be most reactive in places like this.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
Storm snow reactivity is decreasing. Keep a look out for lingering slabs around steep rolls and extreme terrain.
elow treeline (& possibly up to 2300m): High freezing levels and rain events created a rain crust (or two).  New snow is not bonding well to these near surface rain crusts. Rain crusts are more prominent in the southern / central Purcells.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":15,"style":"BOLD"},{"offset":40,"length":1,"style":"BOLD"},{"offset":107,"length":3,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"entfp","text":"At and near tree line, the new snow rests on widespread layer of large surface hoar crystals.  Shooting cracks, remote triggering and settlements (whumphing) are classic signs of instability that buried surface hoar is present and potentially reactive.  Snow that has been wind affected may be most reactive.  We suspect this Surface Hoar is most intact in areas that saw little rain (& hence have no THICK rain crust).","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":21,"style":"BOLD"}],"entityRanges":[{"offset":71,"length":12,"key":0},{"offset":95,"length":15,"key":1},{"offset":170,"length":20,"key":2}],"data":{}},{"key":"9gvta","text":"At upper elevations where recent winds transported new snow, storm slabs formed in lee features (Northerly and Easterly slopes) and will be especially touchy where they sit over a crust.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":20,"style":"BOLD"}],"entityRanges":[{"offset":180,"length":5,"key":3}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/#shooting-cracks"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=remote#signs-of-instability"}},"3":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https
We are uncertain about whether the early November crust remains to be a problem. Our limited information suggests this problem is more likely found around Pine Pass and the eastern slopes of the Rockies. However, given our lack of data, it's best to approach any big open slope with caution, especially those that are rocky and have variable snowpack depths.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b6opl","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7aud4","text":"
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6de29","text":"Recent winds from a variety of directions have formed wind slabs on typically windward features at treeline and above. Use caution when transitioning into wind affected terrain.
Strong southwest wind overnight has likely transported soft snow into fat pockets of reactive wind slab in leeward terrain features. The near surface crust offers a slick bed surface for avalanches.
Recent new snow combined with moderate to strong northerly wind have created wind slabs in the lee of terrain features.
Strong to extreme wind forecast for overnight Monday and into Tuesday may create new and reactive wind slabs on lee and cross-loaded features in the alpine and in \"alpine-like\" features near treeline, particularly where these slabs sit on top of a crust/facet layer from early November.
20-40 cm of new snow sits on a weak layer of surface hoar. This new snow combined with southwest winds has promoted slab formation, especially at higher elevations.
Shifting wind over the weekend may form fresh wind slabs on all aspects. Pay attention to how well these slabs are bonding to the underlying crusts.
Initially, the recent storm snow was not bonding well to the crust. I suspect the bond has improved, however; slabs may be still reactive to human triggering where snow has been wind stiffened. Loose dry sluffs may run fast from your boards or sleds in steep sheltered terrain.
Reactive wind slabs may be found on steep alpine slopes and along ridgetops.
Minimize exposure to slopes with cornices overhead and stay well back of them when travelling on ridges.
Recently formed wind slabs may be reactive to human triggers and could step-down to deeper weak layers, resulting in large avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9jmva","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"agmit","text":"
Storm snow reactivity is quickly decreasing. Keep a look out for lingering slabs around steep rolls and extreme terrain. Cornices might still be a bit touchy.
Recent and ongoing snow & strong to extreme winds (southwest and southeast) are forming fresh storm slabs. Watch for fat deposits in leeward terrain features such as ridge crests and roll-overs.  Recent winds have been predominately from the Southern quadrant so expect wind loading to be the most prominant on northeast to northwesterly slopes.  However, some areas have reported northeasterly winds resulting in the possibility of reverse loading.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":133,"length":7,"key":0}],"data":{}},{"key":"8qe4t","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LI
15-35cm of new snow is forecast to fall over the region by midday Thursday.  New snow is falling with moderate to strong southwest winds and the resulting slabs will likely be the most reactive in wind loaded areas in the lee of ridgecrests.  New snow will also be settling into a soft slab with warm temperatures even in wind sheltered terrain.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":222,"length":3,"key":0}],"data":{}}],"entityMap":{"0":{"type"
elow treeline (& possibly up to 2300m): High freezing levels and rain events created a rain crust (or two).  New snow is not bonding well to these near surface rain crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":15,"style":"BOLD"},{"offset":40,"length":1,"style":"BOLD"},{"offset":107,"length":3,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"entfp","text":"At and near tree line, the new snow rests on widespread layer of large surface hoar crystals.  Shooting cracks, remote triggering and settlements (whumphing) are classic signs of instability that buried surface hoar is present and potentially reactive. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":21,"style":"BOLD"}],"entityRanges":[{"offset":71,"length":12,"key":0},{"offset":95,"length":15,"key":1},{"offset":170,"length":20,"key":2}],"data":{}},{"key":"9gvta","text":"At upper elevations where recent winds transported new snow, storm slabs formed in lee features (Northerly and Easterly slopes) and will be especially touchy where they sit over a crust.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":20,"style":"BOLD"}],"entityRanges":[{"offset":180,"length":5,"key":3}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/#shooting-cracks"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=remote#signs-of-instability"}},"3":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https
Storm slabs may be reactive to human triggers. These will be more sensitive to triggering and larger in size in areas where strong winds have transported the snow into deeper slabs. Reverse loading on Thursday may have formed wind slabs on opposite slopes for Friday.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":182,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","muta
Continuing snow and wind will build storm slabs at upper treeline and alpine elevations (anywhere snowfall accumulates instead of rain). Avalanche hazard may peak overnight Monday/early Tuesday as freezing levels spike. The most reactive slabs will be in wind-loaded areas or around ridges and convex rolls. Be wary of cornices, they may grow quickly under the current conditions.
Wind slab may exist and be reactive on lee and cross-loaded features in the alpine or in \"alpine-like\" features at treeline. Forecast East winds on Thursday may reverse load oposite slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":39,"length":29,"key":0},{"offset":160,"length":14,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":"LINK","muta
The recent snow has a poor bond to the underlying crust. Isolated pockets of stiff wind slab could be reactive to human triggers especially where it sits on a widespread crust. Loose-dry sluffing may be seen from steeper slopes and terrain features.
You could find up to 20 cm snow from the recent storm at upper elevations. In some places it sits over a rain crust, and in other areas possibly surface hoar. Human triggering is more likely in areas where the snow had been exposed to wind. Loose dry sluffs may run fast from your boards or sleds in steep sheltered terrain.
The recent snow has a poor bond to the underlying crust. Isolated pockets of stiff wind slab could be reactive to human triggers especially where it sits on a widespread crust. Loose-dry sluffing may be seen from steeper slopes and terrain features.
Triggering wind slab avalanches remains possible at upper elevations, so pay attention to recent wind loading patterns.
20 to 40 cm of new snow fell Monday night with moderate north wind. Watch for the formation of fresh sensitive slabs in the new snow that will likely continue to be sensitive to human triggering.
5-10 cm new snow accumulated Monday with more forecasted through the night. Snow and wind will build slabs at upper treeline and alpine elevations. The most reactive slabs will be in wind-loaded areas or around ridges and convex rolls. Be wary of cornices, they may grow quickly under the current conditions.
Shifting wind may form wind slabs on all aspects. The wind was first from the northwest this weekend but is forecast to shift to the south or southwest on Sunday and Monday. Monday's snowfall and strong wind is expected to form new wind slabs in exposed terrain.
Below treeline and up to 2200m: High freezing levels and rain events created a rain crust (or two).  New snow is not bonding well to these near surface rain crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":32,"style":"BOLD"},{"offset":98,"length":3,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"4dtb1","text":"At and near tree line, the 20-40cm of new snow rests on widespread layer of large surface hoar crystals.  Shooting cracks, remote triggering and settlements (whumphing) are classic signs of instability that buried surface hoar is present and potentially reactive. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":21,"style":"BOLD"}],"entityRanges":[{"offset":82,"length":12,"key":0},{"offset":106,"length":15,"key":1},{"offset":181,"length":20,"key":2}],"data":{}},{"key":"apfi","text":"At upper elevations where recent winds transported new snow, storm slabs formed in lee features (Northerly and Easterly slopes) and will be especially touchy where they sit over a crust.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":20,"style":"BOLD"}],"entityRanges":[{"offset":180,"length":5,"key":3}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/#shooting-cracks"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=remote#signs-of-instability"}},"3":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https
Where dry flurries have dusted the highest elevations, you may be find small pockets of triggerable storm slab.
Additional 30-50 cm recent new snow in the North Shore mountains overnight Wednesday will bring total snow fall amounts in the past week to 60-110 cm.  This snow has shown reactivity on a variety of sliding layers, most notably a series of crusts from melt freeze or rain events.   New snow will be particularly reactive where recent southwestern winds have created wind loaded pockets just below ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3o7eq","text":"
Keep a look out for lingering storm slabs around steep rolls and extreme terrain.
ven with 15 cm of new snow over the day, slabs of concern will be specific to wind loaded pockets in lee terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"69mcp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"i6ak","text":"You may see some loose dry sluffing under your skis in steep terrain.
A band of moisture and wind with push through the region overnight, with potentially up to 30 cm in localized areas. Widespread surface hoar has been observed around the region over the last few days, avalanche conditions could get especially spicy where new slabs form over surface hoar.
Wind has impacted any dry snow at high elevations, look for rogue wind slabs in alpine terrain.
10-20 cm of new snow with strong winds from the southwest formed reactive slabs at upper elevations. These will be more sensitive to triggering and larger in size in areas where strong winds have transported the snow into deeper slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bb40k","text":"This problem is confined to areas that accumulated dry snow - its is likely not a concern where sustained warm temps and rain saturated slopes (such as around the Coquihalla). The saturated snowpack should freeze and dry with falling temperature, however a loose wet avalanche problem should be considered anywhere the snowpack remains moist or wet.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"95j77","text":"Recently formed wind slabs will likely be reactive to human triggers and could step-down to deeper weak layers, resulting in large avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"80pk3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ahj8f","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8bv1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9jmva","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"agmit","text":"
Natural storm slab avalanche activity will likely decrease, however; they could remain reactive to human triggers. These will be more sensitive to triggering and larger in size in areas where strong winds have transported the snow into deeper slabs. Natural triggers from heavy snowfall, wind, and cornice falls are a concern.
Recently formed wind slabs may be reactive to human triggers and could step-down to deeper weak layers, resulting in large avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"80pk3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ahj8f","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8bv1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9jmva","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"agmit","text":"
New storm and wind slab problems exist after Monday night's storm. In the Blue River and Valemount areas 30+ cm of snow sits above crusts and a widespread layer of large surface hoar. This has likely formed very reactive storm slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":170,"length":12,"key":0}],"data":{}},{"key":"2jm69","text":"There was less snow in other areas, but strong wind would have left reactive slabs on wind-loaded slopes and on steep convexities. These slabs may also sit above reactive weak layers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
Below treeline (& possibly up to 2400m): High freezing levels and rain events created a rain crust (or two).  New snow is not bonding well to these near surface rain crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":15,"style":"BOLD"},{"offset":39,"length":2,"style":"BOLD"},{"offset":107,"length":3,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"en5ue","text":"At and near tree line, the 20-40cm of new snow rests on widespread layer of large surface hoar crystals.  Shooting cracks, remote triggering and settlements (whumphing) are classic signs of instability that buried surface hoar is present and potentially reactive. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":21,"style":"BOLD"}],"entityRanges":[{"offset":82,"length":12,"key":0},{"offset":106,"length":15,"key":1},{"offset":181,"length":20,"key":2}],"data":{}},{"key":"2dihu","text":"At upper elevations where recent winds transported new snow, storm slabs formed in lee features (Northerly and Easterly slopes) and will be especially touchy where they sit over a crust.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":20,"style":"BOLD"}],"entityRanges":[{"offset":180,"length":5,"key":3}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/#shooting-cracks"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=remote#signs-of-instability"}},"3":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https
Up to 20 cm fresh snow accumulated (in localized areas) with moderate winds. In some areas it sits over a rain crust, and other areas possibly surface hoar. This problem is likely confined to ridgelines and alpine features.
0 to 35 cm of new snow fell Monday night combined with moderate northerly wind. Watch for the formation of fresh sensitive slabs in the new snow that will likely continue to be sensitive to human triggering.
The new snow may show a poor bond to the variety of old snow surfaces its landing on. This may result in a reactive storm slab or small loose dry avalanches from steep terrain. Strong southwest winds may have formed deeper deposits on lee aspects building isolated, yet reactive wind slabs in the alpine and in \"alpine-like\" features near treeline, particularly where these slabs sit on top of a crust.
Storm and wind slab problems likely exist at elevations above the rain crust. They are most concerning around Blue River and Valemount where 30+ cm of snow may sit above sun crusts and a widespread layer of large surface hoar. There was less snow in Northern areas, but strong wind would have left reactive slabs on wind-loaded slopes and on steep convexities.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":213,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
Recent strong to extreme southerly wind has created widespread wind effect. Expect to see deep wind deposits in exposed lee terrain.
The new storm snow is building reactive storm slabs. Strong southwest wind is forming deeper slabs on leeward slopes that could produce larger avalanches. Loose-dry sluffing will likely occur from steep terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":101,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LI
A few cm of new snow may have been blown into small pockets of windslab at upper elevations.
olar triggering of dry snow is possible during sunny periods Saturday. Storm slabs are most likely to remain reactive where they sit over a crust or surface hoar. You can investigate this interface in a number of ways including:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ek7rd","text":"digging down below the storm snow to have a look at what it is sitting on","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2e9pt","text":"doing a quick hand shear test ","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":14,"length":15,"key":0}],"data":{}},{"key":"2t21d","text":"look for signs of instability like shooting cracks and whumping while you travel","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":9,"length":20,"key":1},{"offset":35,"length":15,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=hand+shear#hand-shear-test"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=signs#signs-of-instability"}},"2":{"type":"LINK","m
New snow and wind will set up reactive storm and wind slabs on steep slopes during stormy conditions.  Recent and ongoing snow & moderate to strong winds continue to form fresh storm slabs that could potentially be on top of buried slabs in wind affected terrain.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2icev","text":"Watch for fat deposits in leeward terrain features such as ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":26,"length":7,"key":0}],"data":{}},{"key":"f0pci","text":"Remember that smaller loose stuffs and storm slabs may trigger deeper weak layers in a  step down event.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":88,"length":9,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":"LINK","mutabilit
The recent snow has a poor bond to the underlying crust. Isolated pockets of stiff wind slab could be reactive to human triggers especially where it sits on a widespread crust.
The new storm snow is building reactive storm slabs. Strong southwest wind is forming deeper slabs on leeward slopes that could produce larger avalanches. Loose-dry sluffing will likely occur from steep terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":101,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LI
10-15 cm of new snow sits on a weak layer of surface hoar.  Expect this layer to be most reactive in wind loaded terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":45,"length":12,"key":0}],"data":{}},{"key":"4dasn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bnsik","text":"Some areas near Blue River likely have up to 40 cm of new snow on this layer, and it will be most reactive in places like this.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
Recent storm snow and strong southwest wind have built reactive storm slabs. Large avalanches are expected, especially where they sit above a crust buried in early December.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4kuc9","text":" ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7vgj5","text":"
Storm slabs will likely be reactive on Tuesday producing large and widespread avalanche activity. Simple, low angle terrain away from overhead hazard is a good choice right now.
10-20 cm of new snow and strong wind from the southwest will build the freshest slabs on northwest to northeast to southeast aspects. Older wind slabs may still linger on southwest slopes due to strong easterly winds earlier this week.
Triggering wind slab avalanches remains possible at higher elevations, especially on freshly wind-loaded terrain features. New wind slabs are likely to form during periods of strong wind on Monday.
Storm slab avalanche activity is expected to increase as 20-30 cm of recent snow settles to form a cohesive slab over a layer of weak crystals ontop of a crust. Be especially cautious of fat, wind loaded pockets in north-northwest terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"37ge8","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2iko1","text":"There is also potential for loose snow avalanches on steep slopes where the sun touches dry snow for the first time.
Loose dry avalanches are likely where the sun touches dry snow for the first time. You may also find small pockets of triggerable storm slab near ridgetops.
Heavy snowfall Friday and Friday night will be creating reactive storm slab and wind slabs.  Cooling temperatures Saturday morning will help this new snow to bond.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d0bh7","text":"New snow will remain reactive where southwestern winds have created wind loaded pockets just below ridge crests and roll-overs.  A period or rapid loading (up to 10cm/hour) is forecast for Friday afternoon with rising freezing levels and strong to extreme winds.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3o7eq","text":"Remember to avoid any areas that have large steep avalanche slopes above you: large destructive avalanches can run far into flat terrain.  In other words, avoid overhead hazard.
ncreasing winds impacting 10-30 cm of soft surface snow may blow into unstable slabs. Where the new snow overlies surface hoar (or a crust) a poor bond has been noted, and reactively will increase where soft snow gains cohesion and slab properties.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1i12o","text":"The problem is more likely found in northern parts of the region (e.g. Golden).
Look for the formation of fresh, sensitive storm slabs as strong southwest wind and 15 to 25 cm of new snow come together Saturday night into Sunday. This snow will add to the 30 to 50 cm that already rests on the surface hoar.
Storm snow with strong southwest wind have formed reactive storm slabs. Recent snowfall amounts vary widely across the region.
Storm and wind slab problems may exist at elevations above 1500m (above the rain crust). Storm slabs will be most concerning around Blue River and Valemount where 30+ cm of snow may sit above sun crusts and a widespread layer of large surface hoar. There was less snow in Northern areas, but strong wind would have left reactive slabs on wind-loaded slopes and on steep convexities.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":235,"length":12,"key":0}],"data":{}},{"key":"c35bv","text":"Watch for stuffing as your transition to steep terrain and if the sun comes out.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
20-40 cm of recent fresh snow with strong southwest winds has likely formed reactive storm slabs. These will probably be very easy to trigger on wind loaded slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":145,"length":18,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabil
Look for the formation of fresh, sensitive storm slabs as strong southwest wind and 15 to 25 cm of new snow come together Saturday night into Sunday.  This snow will add to the 30 to 40 cm that already rests on the surface hoar.
Recent and ongoing storm snow with strong southwest winds has formed reactive storm slabs. Large avalanches are expected, especially where they sit above a crust buried in early December.
New storm snow has likely formed reactive slabs. Strong southwest wind will create deeper slabs on leeward slopes that could produce larger avalanches. Avalanches may entrain moist snow if the runouts extend into below treeline elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":98,"length":15,"key":0},{"offset":193,"length":7,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"typ
20 cm snow of recent storm snow at upper elevations may sit over a rain crust and/or possibly surface hoar. Human triggering is more likely where the snow had been exposed to wind. Loose dry sluffs may run fast from your boards or sleds in steep sheltered terrain.
The recent snow has a poor bond to the underlying crust. Isolated pockets of stiff wind slab could be reactive to human triggers especially where it sits on a widespread crust.
A rain crust from the first week of December is now buried down 30-75cm. This rain crust is widespread and can be found to mountain top throughout the regions.  It has been most reactive  where a thin layer of sugary facet crystals overlays it. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":7,"length":5,"key":0}],"data":{}},{"key":"8dkvl","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fetpj","text":"In sheltered treeline locations there is a buried surface hoar layer that is buried down 25-60cm.  This weak layer has shown most signs of reactivity on northern aspects.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":50,"length":12,"key":1},{"offset":162,"length":7,"key":2}],"data":{}},{"key":"b0t93","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9srun","text":"These layers have shown widespread signs of instability in recent days, including remote avalanches, accidental skier triggered avalanches, cracking and easy sudden snow test results.  As these layers are more deeply buried, they may be less predictable to trigger but the resultant avalanche will be more destructive.  Smaller loose snow \"sluffing\" or a small slab avalanche may trigger this layer in a step down event.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":404,"length":9,"key":3}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=crust#crusts-are-hard-layers-of-snow-usually-created-by-liquid"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/terms/aspect"}},"3":{"type":"LINK","mutabilit
inds have formed reactive slabs in lee features at upper elevations. Where the new snow overlies surface hoar (or a crust) a poor bond has been noted, and reactively will increase as winds encourage cohesion and slab properties. Dig down to investigate developing slabs in the upper snowpack and a poor bond to older surfaces. The problem is more likely found in northern parts of the region, in areas that have received the higher amounts of incremental snowfall (e.g. Golden).
Intermittent snow and flurries continue to stack up, 20-40 cm of recent and fresh snow sits on a weak layer of surface hoar.  Expect this layer to be most reactive in wind loaded terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":111,"length":12,"key":0}],"data":{}},{"key":"4dasn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bnsik","text":"Some areas near Blue River likely have up to 40-60 cm of new snow on this layer, and it will be most reactive in places like this.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
Fresh storm slabs building Wednesday and Thursday will likely be reactive, especially to human triggers. Due to the timing of the storm, the avalanche hazard could increase throughout the day. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6v632","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"23tvj","text":"
Intermittent snow and flurries continue to stack up, 30-40 cm fresh snow overlies a layer of surface hoar. Reactive slabs have formed in the storm snow, expect to find increasingly reactive slabs as storm snow accumulates, especially in wind-loaded areas.
Intermittent snow and flurries continue to stack up, 30-50 cm fresh snow overlies a layer of surface hoar. Reactive slabs have formed in the storm snow, expect to find increasingly reactive slabs as snow continues to accumulate, especially in wind-loaded areas.
Intermittent snow and flurries continue to stack up, 30-40 cm fresh snow overlies a layer of surface hoar. Reactive slabs have formed in the storm snow, expect to find increasingly reactive slabs as snow continues to accumulate, especially in wind-loaded areas.
0-30 cm of soft surface snow may be blown into unstable slabs. In certain areas this snow may be poorly bonded to underlying layers of surface hoar and/or crusts. The problem is more likely found in northern parts of the region (e.g. Golden).
New snow and recent strong winds have created  storm slabs that will likely still be easy to trigger, especially in wind loaded areas and at higher elevations.\n
Strong southeast wind overnight has likely transported soft snow into fat pockets of reactive wind slab over weak crystals sitting on a crust. Watch for these wind loaded pockets just below ridge crests and toll-overs. The crust offers a slick bed surface for avalanches.
Moderate southeast to southwest wind forecast to pick up during the day will transport soft snow into fat pockets of reactive wind slab in leeward terrain features. The near surface crust offers a slick bed surface for avalanches.
Recent snow may sit above a layer of surface hoar and/or sun crusts at alpine and treeline elevations. This problem is most concerning around Blue River and Valemount where this layer is roughly 30 cm deep.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":37,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f046h","text":"Recent winds from a variety of directions have reverse loaded some slopes, creating wind slabs on typically windward features at treeline and above.
Intermittent snow and flurries continue to stack up, 20-40 cm fresh snow overlies a layer of surface hoar. Reactive slabs have formed in the storm snow, expect to find increasingly reactive slabs as storm snow accumulates, especially in wind-loaded areas.
0-30 cm of snow that fell earlier this week may be blown into unstable slabs. In certain areas this snow may be poorly bonded to underlying layers of surface hoar and/or crusts. The problem is more likely found in northern parts of the region that received more snow.
10-30 cm of snow that fell earlier this week may be blown into unstable slabs. In certain areas this snow may be poorly bonded to underlying layers of surface hoar and/or crusts. This is most likely a problem at treeline and alpine elevations in areas that received more than 20 cm of snow in the recent storm.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":151,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
20-40 cm of snow may sit above a layer of surface hoar and/or sun crusts at alpine and treeline elevations. This problem is most concerning in eastern and northern parts of the region (e.g. the Selkirks and northern Monashees). Elsewhere rain crusts have likely modified and covered these weak layers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":42,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
A weak layer of surface hoar down 50-100 cm. has been reactive to human triggers, resulting in large avalanches.
Strong southwest wind is forecast for the rest of the week along with a bit of new snow. Use caution near ridges and avoid leeward slopes, particularly where you find stiff wind affected snow. Loose-dry sluffing from steep terrain features.
New snow and wind will set up reactive storm and wind slabs on steep slopes during stormy conditions. Heavy snow areas such as the Coquihalla will be most likely to see avalanche activity.
Incremental snowfall amounts, westerly wind and rising temperatures are forecast for Sunday. Use caution near ridges and avoid leeward slopes, particularly where you find stiff wind affected snow.
We could see as much as 20 cm of new snow Monday night into Tuesday with strong north wind. Watch for the formation of fresh sensitive slabs in the new snow.
A weak layer of surface hoar and/or faceted grains overly a hard melt-freeze crust around 30 to 60 cm deep. The likelihood of triggering this layer will increase as Monday's storm loads it. An avalanche cycle is expected to occur on it by Tuesday morning, likely during periods of rapid snow loading. Riders have already triggered large avalanches on this layer, and the consequence of doing so will only increase as it gets deeper.
Heavy snowfall amounts (20-50cm) are forecast for Friday accompanied by strong to extreme southwest winds, which will form touchy fresh storm slabs.  Avalanche conditions are forecast to deteriorate during the day on Friday with forecast snowfall amounts and wind.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mvo6","text":"Watch for fat deposits in leeward terrain features such as ridge crests and roll-overs.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":26,"length":7,"key":0}],"data":{}},{"key":"86jhs","text":"Recent winds have been predominately from the Southern quadrant so expect previous wind loading to be the most prominant on northeast to northwesterly slopes.  However, some areas have reported northeasterly winds resulting in the possibility of reverse loading.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8qe4t","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LI
Triggering wind slab avalanches remains possible at higher elevations, especially on freshly wind-loaded terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1qa8v","text":"New wind slabs are likely to form during periods of strong southwest winds that are expected this week and through the weekend.
Heavy snowfall Friday and Friday night will be creating reactive storm slab and wind slabs.  Cooling temperatures Saturday morning will help this new snow to bond.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d0bh7","text":"New snow will remain reactive where southwestern winds have created wind loaded pockets just below ridge crests and roll-overs.  A period or rapid loading (up to 10cm/hour) is forecast for Friday afternoon with rising freezing levels and strong to extreme winds.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3o7eq","text":"Remember to avoid any areas that have large steep avalanche slopes above you: large destructive avalanches can run far into flat terrain.  In other words, avoid overhead hazard.
Storm slabs may be especially reactive in wind sheltered terrain where storm snow sits on surface hoar. Caution around wind loaded pockets just below ridge crests and roll-overs. Loose dry sluffing is likely under your skis in steep terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":90,"length":13,"key":0}],"data":{}},{"key":"3o7eq","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"804oe","text":"We are uncertain about the potential for step-down avalanches on the buried crust. If triggered, these slabs could be up to 50 cm deep in some places. A crust offers a slick bed surface for avalanches to run fast and far.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":41,"length":9,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#surface-hoar"}},"1":{"type":"LINK
20 cm of snow at upper elevations may sit over a rain crust and/or possibly surface hoar. Human triggering is more likely where the snow had been exposed to wind.
20-40 cm of snow may sit above a layer of surface hoar and/or sun crusts at alpine and treeline elevations. This problem is most concerning in eastern and northern parts of the region (e.g. the Selkirks and northern Monashees). Elsewhere rain crusts have modified and covered these weak layers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":42,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
10-30 cm of snow from last week may be blown into unstable slabs. In certain areas this snow may be poorly bonded to underlying layers of surface hoar and/or crusts. This is most likely a problem at treeline and alpine elevations in areas that received more than 20 cm of snow in the recent storm.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":138,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
Recent snow may sit above a layer of surface hoar and/or sun crusts at alpine and treeline elevations. This problem is most concerning around Blue River and Valemount where this layer is roughly 30 cm deep.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":37,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
New snow and wind will set up reactive storm and wind slabs on steep slopes during stormy conditions.  Recent and ongoing snow & moderate to strong winds continue to form fresh storm slabs that could potentially be on top of buried slabs in wind affected terrain.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2icev","text":"Watch for fat deposits in leeward terrain features such as ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":26,"length":7,"key":0}],"data":{}},{"key":"4o121","text":"Avalanche conditions are forecast to deteriorate during the day on Friday with forecast snowfall amounts and potentially strong to extreme wind speeds in the afternoon.  Heavy snow areas such as the Coquihalla will be most likely to see avalanche activity.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LI
Moderate to strong southwest winds with additional new snow will continue to create fresh wind slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5rruo","text":"Previous northerly winds mean that there may still be some wind slabs on southerly aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2sdk7","text":"Assess all aspects for potential wind slabs.
Recent snow fall in the past week is 30-60cm, which is rapidly settling with warm temperatures into a soft slab. Assess how each layer of new storm snow is bonding to previous layers.  Additional snowfall on Friday afternoon will only add to this storm slab.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"euo8p","text":"New snow is falling with moderate to strong southwest winds and the resulting slabs will likely be the most reactive in wind loaded areas in the lee of ridgecrests.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":145,"length":3,"key":0}],"data":{}}],"entityMap":{"0":{"type"
Triggering wind slab avalanches remains possible at higher elevations, especially on freshly wind-loaded terrain features. New wind slabs are likely to form during periods of strong wind on Monday.
Cornice falls or smaller avalanches in motion may have the potential to step-down to these deeper layers, producing large, destructive avalanches.
Recent strong southeast to southwest wind  has transported soft snow into pockets of wind slab in leeward terrain features such as ridge crests and roll-overs. The near surface crust offers a slick bed surface for avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":98,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LI
There may be up to 50 cm of new snow by Wednesday afternoon, likely resulting in widespread storm slab avalanches.
Isolated pockets of wind slabs could be reactive to human triggers.
Wind from variable directions has formed wind slabs on all aspects. Strong wind from the southwest is forecast for Tuesday, so the freshest slabs are expected to be on northwest to northeast to southeast aspects.
Strong southwest wind is forecast for the rest of the week along with a bit of new snow. Use caution near ridges and avoid leeward slopes, particularly where you find stiff wind affected snow. Loose-dry sluffing from steep terrain features.
Pockets of soft wind slab may be found in leeward features in the alpine. The underlying crust offers a slick bed surface for avalanches.
Shifting wind may form wind slabs on all aspects. The wind was first from the northwest this weekend but is forecast to shift to the south or southwest on Sunday and Monday. Monday's snowfall and strong wind is expected to form new wind slabs in exposed terrain.
Cornice falls or smaller avalanches in motion may have the potential to step-down to these deeper layers, producing large, destructive avalanches.
Isolated pockets of wind slabs could be reactive to human triggers.
New snow and strong southwest wind are forming fresh storm slabs. Watch for fat deposits in leeward terrain features such as ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":92,"length":7,"key":0}],"data":{}},{"key":"9gb4j","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"svri","text":"Storm slabs may be particularly reactive where they accumulate over a weak layer such as surface hoar or a crust now buried 20-50 cm deep. The crust offers a slick bed surface for avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8qe4t","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LI
20-40 cm falling on the North Shore mountains by end of the day Tuesday brings storm totals to 30-60 cm. Storm slabs may be especially reactive in wind sheltered terrain where storm snow sits on surface hoar. Caution around wind loaded pockets just below ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":195,"length":13,"key":0}],"data":{}},{"key":"3o7eq","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
New inputs of snow amid strong southwest winds are forming fresh wind slabs at upper elevations. Watch for freshly wind loaded pockets under ridgecrests and roll-overs.
Snow is expected to accumulate over the day with associated strong southwest wind and/or easterly outflow winds. The most snow is forecast in the far south with substantially less accumulation in the northern half of the region.
Strong southwest wind is forecast for Tuesday along with a bit of new snow. Use caution near ridges, particularly where you find slab properties in the surface snow.
Strong wind from the southwest is forecast for Tuesday along with some new snow. Use caution at and above treeline on lee slopes near ridges, particularly if you notice slab properties in the surface snow.
Intermittent snow and flurries continue to stack up, recent and fresh snow sits on a weak layer of surface hoar down 20-40 cm. Expect this layer to be most reactive in wind loaded terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":99,"length":12,"key":0}],"data":{}},{"key":"4dasn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bnsik","text":"Some areas near Blue River likely have up to 40-60 cm of new snow on this layer, and it will be most reactive in places like this.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
With incoming snow and wind loading avalanches are on 30 degree or steeper slopes (moderate angle) where more than 30 accumulates are very likely, especially if there's surface hoar below. Wind loaded slopes are especially suspect.
Around 20 to 30 cm of precipitation is forecast for Saturday night, which will start as snow but is forecast to transition to rain below around 1900 m. The snow surface is expected to be wet early-morning and freeze into a hard melt-freeze crust. This snow will accumulate onto a hard crust and may not bond well to it; use particular caution in steep terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2u40e","text":"It is possible you may find dry snow at the highest mountain tops in the region. Should you find a dry snow surface up high, expect wind slabs to have formed due to strong southwest wind.
Wind slabs may exist at elevations where Saturday night's precipitation all fell as snow, which was likely around 1500 to 1700 m. The most suspect features will be at and above treeline on northerly to easterly slopes immediately adjacent to ridges.
Wind from variable directions has formed wind slabs on all aspects. 10-20 cm of new snow and strong wind from the southwest is forecast until the weekend, so the freshest slabs are expected to be on northwest to northeast to southeast aspects. Loose-dry sluffing may be seen from steep terrain.
Snow is expected to accumulate over the day with an associated strong southwest wind. Heavy snow is forecast in the far south with substantially less accumulation in the northern half of the region. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7vgj5","text":"
New inputs of snow amid strong southwest winds are forming fresh wind slabs in lee features at upper elevations. Wind slabs may sit over previously wind affected surfaces, directly over a crust, or over a layer of surface hoar 5-20 cm above the crust. The crust offers a slick bed surface for avalanches.
Recent snow may sit above a layer of surface hoar and/or sun crusts at alpine and treeline elevations. This problem is most concerning around Blue River and Valemount where this layer is roughly 30 cm deep.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":37,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutab
15-50 cm of snow may sit above a layer of surface hoar and/or crusts. This layer will likely be reactive to human triggers in areas with 30+ cm of snow on top of the weak layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":42,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
15-35 cm of snow may be blown into unstable slabs. In certain areas this snow may be poorly bonded to underlying layers of surface hoar and/or crusts. This is most likely a problem at treeline and alpine elevations in areas that received more than 20 cm of snow in the past week.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":123,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
0-30 cm of soft surface snow may be blown into unstable slabs. In certain areas this snow may be poorly bonded to underlying layers of surface hoar and/or crusts. The problem is more likely found in northern parts of the region (e.g. Golden).
Recent and ongoing snow & strong to extreme winds (southwest and southeast) are forming fresh storm slabs. Watch for fat deposits in leeward terrain features such as ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":133,"length":7,"key":0}],"data":{}},{"key":"9gb4j","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"svri","text":"Storm slabs may be particularly reactive where they accumulate over a weak layer such as surface hoar or a crust now buried 30-70 cm deep. The crust offers a slick bed surface for avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8qe4t","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LI
Additional 20-50 cm recent new snow in the North Shore mountains Monday through Wednesday brings total snow fall amounts in the past week to 40-70 cm.  This snow has shown reactivity on a variety of sliding layers, including thin crusts, thick crusts and buried weak  surface hoar.  New snow will be particularly reactive where recent southwestern winds have created wind loaded pockets just below ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":268,"length":13,"key":0}],"data":{}},{"key":"3o7eq","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
Storm slabs will be most reactive in the Coquihalla Pass area where 20-30cm are forecast to fall overnight Tuesday and another 5-10cm on Wednesday.  This snow will be affected by moderate to strong southwestern winds. Watch for fat deposits in leeward terrain features such as ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":244,"length":7,"key":0}],"data":{}},{"key":"3kbvq","text":"In the Duffy, where new snowfall levels are much lighter, buried wind slabs will be most reactive on Northeast to Easterly aspects. New inputs of snow amid strong southwest winds are forming fresh wind slabs at upper elevations. Watch for freshly wind loaded pockets under ridgecrests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LI
20-40 cm of new snow sits on a weak layer of surface hoar. This new snow combined with southwest winds has likely created slabs that may be easy to trigger.
0-30 cm of soft surface snow may be blown into unstable slabs. In certain areas this snow may be poorly bonded to underlying layers of surface hoar and/or crusts. The problem is more likely found in northern parts of the region (e.g. Golden).
20-50 cm of recent snow likely sits on a few weak layers. Southwest winds have probably promoted slab formation, especially at higher elevations.
The new storm snow is building reactive storm slabs. Strong southwest wind is forming deeper slabs on leeward slopes that could produce larger avalanches, especially where a buried crust exists. Loose-dry sluffing will likely occur from steep terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":101,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LI
Mostly winds have been from the south and west, but there have been periods of northerly winds that may have locally distributed wind blown snow onto south-facing slopes. Best not to think too much in terms of aspect, but assess each exposed slope individually for potential wind slabs.
Moderate to strong southwest winds with continued new snow is creating fresh deep wind slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5rruo","text":"
My primary concern is wind slabs behind ridges, ribs, and rolls in the terrain. My second concern is the warm temps turning the snow \"upside down\" -- if the snow is warm & dense at the surface, cold and soft below increase caution on steeper rolls irrespective of aspect or wind effect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5rruo","text":"
Fresh snow with southwest winds are forming storm slabs that rest on a weak layer of surface hoar. These slabs will likely be the most reactive in wind loaded areas.
With incoming snow and wind loading avalanches on 30 degree or steeper slopes (moderate angle) where more than 30 accumulates remain very likely, especially if there's surface hoar below. Wind loaded slopes are especially suspect.
Storm slabs will likely be reactive on Tuesday producing large and widespread avalanche activity. Open areas that are more exposed to wind have been producing more avalanches. Simple, low angle terrain away from overhead hazard is a good choice right now.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6nhs","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"617dt","text":"
Recent storm snow and strong southwest wind have built reactive storm slabs. Large avalanches are expected, especially where they sit above a crust buried in early December.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4kuc9","text":" ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7vgj5","text":"
New snow from Friday afternoon & overnight (15-40cm) fell with strong to extreme southwest winds, which will form touchy fresh storm slabs.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mvo6","text":"Watch for fat deposits in leeward terrain features such as ridge crests and roll-overs. Anticipate wind affect may extend much deeper into bowls and across features due to high wind levels. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":26,"length":7,"key":0}],"data":{}},{"key":"86jhs","text":"Remember that smaller loose stuffs and storm slabs may trigger deeper weak layers in a  step down event.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":88,"length":9,"key":1}],"data":{}},{"key":"8qe4t","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":"LINK","mutabilit
A weak layer of surface hoar and/or faceted grains overly a hard melt-freeze crust around 30 to 60 cm deep. The likelihood of triggering this layer is expected to be elevated on Sunday due to more snow load. Riders have triggered large avalanches on this layer, and the consequence of doing so will only increase as it gets deeper.
The snowpack isn't getting much time to adjust to recent snowfall and wind as a new wave of precipitation is set to hit the region Monday afternoon. Simple, low angle terrain away from overhead hazard is a good choice right now.
Storm slabs may continue to be reactive to human triggers. On open slopes in the alpine and treeline this may present more like a windslab problem, but even in more sheltered zones the snow needs some more time to adjust to recent loads.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6v632","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"23tvj","text":"
e're expecting 15 to 35 cm of new snow Monday night into Tuesday with  strong north wind. Watch for the formation of fresh sensitive slabs in  the new snow that will likely be sensitive to human triggering all day  Tuesday.
ind and new snow has continued to form reactive slabs in lee features at upper elevations. Where the new snow overlies surface hoar (or a crust) a poor bond has been noted, and reactively will increase as winds encourage cohesion and slab properties. The problem is more likely found in northern parts of the region, in areas that have received the higher amounts of incremental snowfall (e.g. Golden).
Around 20 cm of snow with strong southwest wind will form new wind slabs in exposed terrain. Use particular caution immediately adjacent to ridges, where the slabs will likely be thickest and touchiest. The storm snow may still be touchy in sheltered terrain features, so check for the bond of the snow prior to committing to avalanche terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8qe4t","text":"
30-50 cm of recent snow has been forming widespread slab problems. This may present as a wind slab issue in specific terrain at higher elevations, but sheltered lower elevations aren't exempt. In many instances storm slabs have been running on a buried crust from early December. Slabs have been seen triggering very easily on wind loaded slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":327,"length":18,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabil
This storm may well push the persistent slab over the tipping point resulting in large and surprisingly touchy slab avalanches.  The slab rests on a persistent weak layer which has the capacity to propagate avalanches across terrain features.  Wind exposed features are expected to be particularly volatile.
Around 20 cm of snow with strong southwest wind will form new wind slabs in exposed terrain. Use particular caution immediately adjacent to ridges, where the slabs will likely be thickest and touchiest. The storm snow may still be touchy in sheltered terrain features, so check for the bond of the snow prior to committing to avalanche terrain.
On open slopes in the alpine and treeline this may present more like a windslab problem, but even in more sheltered zones the snow needs some more time to adjust to recent loads. In some areas storm slabs have been stepping down to early December crust layer.
Around 20 cm of snow fell on Monday, with locally higher amounts possible. This snow may overly a hard melt-freeze crust up to around 1500 m. This snow may slide easily on the crust, either as loose snow or a slab. Above around 1500 m, thicker wind slabs may be found. These slabs may take a couple days to stabilize.
The snowpack isn't getting much time to adjust to recent snowfalls as a new wave of precipitation is set to hit the region Monday afternoon. Open areas that are more exposed to wind have been producing more avalanches. Simple, low angle terrain away from overhead hazard is a good choice right now.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6nhs","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"617dt","text":"
This layer was touchy through the weekend producing large to very large avalanches. The slab rests on a persistent weak layer which has the capacity to propagate avalanches across terrain features.  Wind exposed features are expected to be particularly volatile.
Monday's storm is forecast to bring anywhere from 20 to 40 cm of snow to the south of the region. Expect avalanche activity during periods of rapid loading. The safe bet will be to avoid exposure to avalanche terrain once you notice 2+ cm of snow accumulate per hour.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dob3u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b6tsb","text":"For the entirety of the region, wind slab avalanches are likely to be found adjacent to ridges due to recent strong southwest wind.
50 to 100 cm of storm snow has fallen in the last week and human triggered avalanches remain likely.  The storm snow rest on a variety of weak layers and the snowpack will need more time than usual to adjust to this new load.
urface snow will lose cohesion and become unstable with solar warming during the day.
Recent wind from the east is expected to switch to the southwest, meaning new wind slabs may be found on all aspects.
ecent fresh snow and strong southwest winds have likely formed wind slabs in lee terrain.
Storm slabs will likely be reactive and require patience and time to settle and stabilize. These may be extra touchy on lee slopes where wind loading has built deeper slabs. Simple, low angle terrain away from overhead hazard is a good choice right now.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":120,"length":10,"key":0}],"data":{}},{"key":"6buel","text":"Loose-dry sluffing from steep terrain is likely, especilly when the sun comes out.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LI
50 to 100 cm of storm snow has fallen in the last week and human triggered avalanches remain likely.  The storm snow rest on a variety of weak layers and the snowpack will need more time than usual to adjust to this new load.
Strong southeast to southwest wind on the weekend formed wind slabs at and above treeline. Expect to find them on lee terrain features adjacent to ridges.
20-40 cm of recent fresh snow with strong southwest winds has likely formed reactive storm slabs. These will probably be very easy to trigger on wind loaded slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":145,"length":18,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabil
ind and new snow has continued to form reactive slabs which are most sensitive in wind exposed terrain. Where the new snow overlies surface hoar (or a crust) a poor bond has been noted. The problem is more likely found in northern parts of the region, in areas that have received the higher amounts of snowfall (e.g. Golden).
New storm snow has likely formed reactive slabs. Strong southwest wind will create deeper slabs on leeward slopes that could produce larger avalanches. Avalanches may entrain moist snow if the runouts extend into below treeline elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":98,"length":15,"key":0},{"offset":193,"length":7,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"typ
These storm slabs will likely become less sensitive to human triggering as we move into clear weather this week, but they remain a player, especially in wind loaded terrain features.
20 or more cm of new snow, strong westerly wind and rising temperatures are setting the scene for Sunday. Use caution near steep slopes and avoid leeward slopes, particularly where you find stiff wind affected snow.
We're expecting 15 to 40 cm of new snow Monday night into Tuesday with strong north wind. Watch for the formation of fresh sensitive slabs in the new snow that will likely be sensitive to human triggering all day Tuesday.
30-50 cm of recent snow storm snow has been reactive to human triggering, especially in areas where the wind has stiffened the slab.  This may present as a wind slab issue in specific terrain at higher elevations, but sheltered lower elevations aren't exempt.
Around 20 cm of snow overlies a hard crust. Unseasonably warm air may rapidly create slab properties within this snow and make it easy to trigger. If triggered, it should slide easily on the crust. Thicker wind slabs may also be found at the mountain tops on all aspects due to variable wind directions.
A mix of weak layers may be found 30-80 cm below the surface. Depending on your location in the region, elevation, and aspect, these layers may present as either surface hoar (especially reactive) or a mix of facets and crust (not much better). Avalanches on these layers are becoming less likely to trigger over time, however there have been signs that they are still reactive in certain locations. The variability and uncertainty about this problem warrants conservative terrain selection.
Weak layers of surface hoar and/or faceted grains overly a hard melt-freeze crust around 50 to 100 cm deep. Monday's storm snow is loading these layers. The likelihood of triggering these layers will remain likely as it stabilizes with the load that was added to it.
Fresh storm slabs on Thursday will be very reactive and a widespread avalanche cycle is likely. Below treeline hazard is rated HIGH due to the potential of large avalanches from above running to that elevation.
Wind slabs will likely be reactive on Thursday due to strong wind and lots of available snow to transport. Natural avalanches, whumphing, and shooting cracks in the snow are all indicators of a instability. Loose-dry sluffing from steep terrain is likely, especially when the sun comes out.
0 to 35 cm of new snow fell Monday night combined with moderate north and east wind. Watch for the formation of fresh sensitive slabs in the new snow that will likely continue to be sensitive to human triggering.
Weak layers of surface hoar and/or faceted grains overly a hard melt-freeze crust around 50 to 100 cm deep. The likelihood of triggering these layers will remain likely as it stabilizes from the load that was recently added on it.
Storm slabs will likely be reactive and require patience and time to settle and stabilize. These may be extra touchy on lee slopes where wind loading has built deeper slabs. Loose-dry sluffing from steep terrain is likely, especilly when the sun comes out.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":120,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LI
Storm slabs have been reactive to human triggering, especially in areas where the wind has stiffened the slab.  Due to strong wind on Thursday this may present as a wind slab issue in specific terrain at higher elevations, but sheltered lower elevations aren't exempt.
Storm slabs will likely continue to be reactive on Tuesday, especially in wind loaded areas.
Around 20 cm of snow overlies a hard crust. A warming trend may add slab properties to this snow and make it easy to trigger. If triggered, it should slide easily on the crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"14lao","text":"At the mountain tops, thicker wind slabs may be found on all aspects due to variable wind directions.
Over 60 cm of snow accumulated in the south of the region and over 15 cm in the north on Monday. A warming trend on Wednesday may promote cohesion of this storm snow and for it to remain reactive to human traffic. Up high, wind slabs are likely to be found adjacent to ridges. The wind direction has varied, so slabs may be found on all aspects.
Wind slabs likely exist in steep and exposed terrain and they remain likely to trigger during this warm period at higher elevations. In sheltered terrain, the recent snow may also still be reactive to riders until it bonds to the snowpack.
Recent new snow combined with moderate to strong northerly wind have created wind slabs in the lee of terrain features.
20 to 40 cm of new snow fell Monday night with moderate north wind. Watch for the formation of fresh sensitive slabs in the new snow that will likely continue to be sensitive to human triggering.
There is lots of snow available for recent moderate to strong winds to transport into alpine and treeline lee terrain.
The primary concern is wind slabs lurking on the leeward sides of ridges, ribs, and rolls in the terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"19dtr","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1l2qr","text":"If you find snow that is dense at the surface, but cold and soft below (i.e. upside down), increase caution on steeper rolls regardless of aspect or wind effect.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":125,"length":10,"style":"ITALIC"}],"entityRanges":[],"data":{}},{"key":"5rruo","text":"
Wind affected terrain is expected in exposed terrain at alpine and treeline elevations.  Recent southwest wind has formed the newest slabs on north to east aspects.
Over 50 cm of snow accumulated in the south of the region and over 15 cm in the north. This snow will take a few days to bond to the snowpack and may be reactive to riders on Tuesday, particularly in the south. Up high, wind slabs are likely to be found adjacent to ridges. The wind direction has switched, so slabs may be found on all aspects.
Winds have shifted to the north and they may produce new wind slabs on slopes that don't typically hold them. The most suspect terrain features would be steep slopes immediately adjacent to ridges. The recent snow may also be reactive to human traffic in sheltered terrain features.
30-50 cm of recent snow still needs time to settle and to form strong bonds between storm layers and the old snow surface below it.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6fd6","text":"Avalanches on 30 degree or steeper slopes (moderate angle) remain likely, especially if there's surface hoar below. Wind loaded slopes are suspect as well.
Up to 20 cm of new snow may fall by the end of the day Saturday ontop of extensively wind affected surfaces, crusts and wind slabs. These older wind slabs have been reactive to riders and may continue to be reactive particularly in steep convex alpine terrain where new snow has been wind loaded overtop.
Weak layers of surface hoar and/or faceted grains overly a hard melt-freeze crust around 50 to 100 cm deep. The layers likely went through a natural avalanche cycle during Monday's storm. The likelihood of triggering these layers will remain very likely on Tuesday as it stabilizes with the load that was added to it.
Wind slabs may be found on all aspects in exposed terrain due to shifting winds. These slabs have been reactive to riders and may continue to linger.
Weak layers of surface hoar and/or faceted grains overly a hard melt-freeze crust around 50 to 100 cm deep. Loading from recent storms have pushed the persistent slab problem over the tipping point resulting in large avalanches in the past week. We're being patient and sticking to conservative terrain for the next while until we have clear evidence that buried weak layers have stabilized.
Wind slabs may be reactive to human triggering, especially in areas where the wind has stiffened the slab.  Wind slabs may be found on all aspects at upper elevations because the wind direction has changed, but predominately winds have been from the west/southwest.
Small inputs of new snow with wind overnight have likely formed fresh and reactive wind slabs. Older wind slabs have been reactive especially to skier traffic, on a variety of aspects due to variable wind direction.
The recent snow may form small slabs, particularly in exposed terrain where the wind could stiffen it. Steep terrain will be the most likely place to get the snow to move. If triggered, the snow may have the potential of pushing riders in committing terrain.
15-30 cm of recent snow has been redistributed by wind blowing from the east as it fell Saturday. On Sunday, storm slabs will likely remain most reactive in wind loaded lees such as below ridge crests and roll overs. New snow may become increasingly sensitive to triggering when touched by the sun for the first time.
ith warming temperatures and sun exposure, we can expect to see loose wet avalanches in the new snow, especially on steep south to southwest facing slopes and at elevations where temperatures rise above freezing.
A weak layer of surface hoar down 40-90 cm. has been reactive to human triggers, resulting in large avalanches.
Avalanches on weak layers found 30-60 cm below the surface are becoming less likely to trigger, but there has been evidence they are still possible in certain locations. This spatial distribution of this problem is highly variable across the region and across terrain features. The variability and uncertainty about this problem warrants conservative terrain selection. An in-depth understanding of local snowpack conditions is recommended before venturing into challenging or complex avalanche terrain.
30-50 cm of recent snow has been redistributed at upper elevations by overnight wind from the southwest. Storm slabs will likely be most reactive in wind loaded lees such as below ridge crests and roll overs. New snow may become increasingly sensitive to triggering when touched by the sun for the first time.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bhd81","text":"15-30 cm. of new snow since Christmas day has buried yet another weak layer of surface hoar that was widespread at treeline and below. Expect this new snow to become increasingly reactive to human triggers as it settles into a cohesive slab.
35-50 cm of recent snow is most likely to be reactive in wind affected areas where the snow has been redistributed and stiffened into a slab. Keep your guard up in sheltered openings at treeline and below, where this snow is gradually settling into a slab above pockets of surface hoar.
Wind slabs remain reactive to human triggering on most aspects due to strong, changing winds and recent new snow being available for transport. Predominately west / southwest winds have loaded northerly and easterly aspects.  However, assess each slope carefully for wind loading. Observe wind effect like scouring, sastrugi, cross-loading and lee deposition fro clues to how recent winds have reworked the terrain.   Natural avalanches, whumphing, and shooting cracks in the snow are all indicators of a instability. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":288,"length":12,"key":0}],"data":{}},{"key":"cdgc5","text":"Be on the look-out for cornice formation: these are a hazard underfoot as well as being an overhead hazard that is capable of triggering large avalanches should they fail.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":23,"length":7,"key":1}],"data":{}},{"key":"5s657","text":"Loose-dry sluffing from sheltered steep terrain is likely, especially if the sun comes out.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=wind+#wind-effect"}},"1":{"type":
Lingering wind slabs remain possible to human trigger in isolated areas. Wind slabs in motion may step-down to deeper weak layers resulting in large avalanches.
Natural avalanche activity continues to taper with the end of the snowfall and easing of winds.  However, recent moderate to strong west/southwest winds have created fresh windslabs on lee north and east slopes and cross-loaded features making the snowpack primed for human triggering.   Be on the look-out for cornice formation: these are a hazard underfoot as well as being an overhead hazard that is capable of triggering large avalanches should they fail.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":185,"length":4,"key":0},{"offset":215,"length":12,"key":1},{"offset":311,"length":7,"key":2}],"data":{}},{"key":"ev1hh","text":"Loose-dry sluffing from sheltered steep terrain is likely, especially when the sun comes out or when transitioning into steeper terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=cross#cross-loading"}},"2":{"type":
Wind slabs may be reactive to human triggering, especially in areas where the wind has stiffened the slab.  Wind slabs may be found on all aspects at upper elevations because the wind direction has changed from southwest to east and then back to west. Large and possibly fragile cornices may exist on alpine ridglines.
Fresh wind slabs will likely remain reactive, especially where they have been stiffened by the wind or where they sit atop a surface hoar layer that was reported from just before the recent storm.  Recent winds have been highly variable.  Initially winds were from the southwest but then shifted strong to extreme from the east before returning to a more typical west flow.  Thus all aspects near ridgecrest or wind affected terrain should be assessed for potential windslabs or buried windslabs.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1d4v6","text":"Natural avalanche activity may begin to taper but human triggering remains likely. A conservative plan and terrain selection is key while avoiding overhead hazards like fresh cornices and large avalanche paths.
Weak layers of surface hoar and/or faceted grains overlie a hard melt-freeze crust 30 to 80 cm deep. The new snow load before Christmas pushed this problem over the tipping point and resulted in large avalanches. Although the likelihood of triggering persistent slab avalanches is decreasing, the potential for triggering a high consequence avalanche should still be top of mind in your decision making process.
35-50 cm of recent snow is most likely to be reactive in wind affected areas where the snow has been redistributed and stiffened into a slab. Keep your guard up in sheltered openings at treeline and below, where this snow is gradually settling into a slab above pockets of surface hoar.
A couple of problematic layers may be found around 50 to 120 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. There remains potential for storm slab avalanches to step down to these layers, resulting in large and destructive avalanches.
Heavy snowfall will create widespread and reactive wind slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
Storm slabs will be widespread and very reactive due to significant snow amounts and strong winds.
Weak layers of surface hoar and/or faceted grains may be found above a hard melt-freeze crust. Recent reports suggest the weak layers may be less prevalent in the south of the region, but still exist in localized pockets.
Recent large human triggered avalanches failed on a very weak layer of surface hoar down 30-40 cm. and the sensitivity of this layer was described as \"electric\"! This layer has been found to be most prevalent in the areas surrounding Valemount.
The new snow may form small slabs, particularly in exposed terrain where the wind could stiffen it. Steep terrain will be the most suspect. If triggered, the snow could catch riders in committing terrain.
\nNew snow, strong winds and rising freezing levels have created widespread storm slabs ripe for human triggers.\n
Recent fresh snow with strong southwest winds has likely formed fresh storm slabs. These will probably be the most reactive in wind loaded areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9d0kt","text":"
Weak layers of surface hoar and/or faceted grains may be found above a melt-freeze crust. Recent reports suggest this weak layer may be less prevalent in the south of the region, but still exists in localized pockets.
Wind slabs may be reactive to human triggering, especially in areas where the wind has stiffened the slab or if solar inputs warm steep faces.  Wind slabs may be found on all aspects at upper elevations because the wind direction has changed from southwest to east and then back to west. Large and possibly fragile cornices may exist on alpine ridglines.
Upwards of 40 cm of snow may accumulate in the region by Friday afternoon, with the most snow expected in the west of the region. Storm and wind slabs will build rapidly and they will load buried weak layers. An avalanche cycle may occur at some point during the next few days.
Be on the lookout for fresh wind slabs forming on lee east/southeast slopes in areas with moderate to strong winds.  Winds have been variable, so assess leeward slopes carefully for wind loading. Observe wind effect like scouring, sastrugi, cross-loading and lee deposition for clues to how recent winds have reworked the terrain.  Large cornices  have formed: these are a hazard underfoot as well as being an overhead hazard that is capable of triggering large avalanches should they fail","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":153,"length":7,"key":0},{"offset":203,"length":12,"key":1},{"offset":338,"length":8,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=wind+#wind-effect"}},"2":{"type":
Be on the lookout for fresh wind slabs forming on lee east/southeast slopes in areas with moderate to strong winds.  Winds have been variable, so assess leeward slopes carefully for wind loading. Observe wind effect like scouring, sastrugi, cross-loading and lee deposition for clues to how recent winds have reworked the terrain.  Large cornices  have formed: these are a hazard underfoot as well as being an overhead hazard that is capable of triggering large avalanches should they fail","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":153,"length":7,"key":0},{"offset":203,"length":12,"key":1},{"offset":338,"length":8,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=wind+#wind-effect"}},"2":{"type":
We are exiting a stormy period that has left new slabs at all elevations. The snow may be reactive in sheltered terrain where it could overlie a weak layer of surface hoar. Strong wind from the southwest has created thicker and touchier deposits in lee terrain features at higher elevations.
Any increase in wind speed will likely form wind slabs on the leeward side of ridges, ribs, and rolls. If you don't see obvious signs of wind slabs remember there may still be some buried wind slabs beneath the low density snow.
ind switching directions has created wind slabs on a variety of aspects.
Wind slabs may be reactive to human triggering, especially in areas where the wind has stiffened the slab or if solar inputs warm steep faces.  Wind slabs may be found on all aspects at upper elevations because the wind direction has changed.  Cornices  along ridgecrests represent a hazard underfoot but are most problematic when they collapse above wind loaded avalanche paths and can initiate large avalanches. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":244,"length":8,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK
Moderate winds shifting in direction have created wind slabs in the lee of terrain features on a variety of aspects.
Up to 60 cm of snow fell in the region between Tuesday night and Thursday morning. Strong winds from a variety of directions will mean that storm slabs are likely to be encountered on all aspects and may remain reactive to human triggering on Thursday. The new snow may sit on a weak layer of either surface hoar or a crust, which may mean that it remains reactive for longer than usual.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
Lingering wind slabs remain reactive to human traffic in lee features such as below ridge crests and roll-overs.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bhd81","text":"15-25 cm. of new snow since Christmas day has buried yet another weak layer of surface hoar that was widespread at treeline and below. Expect this new snow to become increasingly reactive to human triggers as it settles into a cohesive slab.
WInd loaded pockets below ridge crests and rollovers may be reactive to human triggers.
A slab rests on a persistent weak layer which has the capacity to propagate avalanches across terrain features. Although the likelihood of triggering a persistent slab avalanche is reducing, the potential for triggering a high consequence avalanche should still be top of mind in your decision making process.
On Monday, storm slabs will likely remain most reactive in wind loaded lees such as below ridge crests and roll overs. New snow may become increasingly sensitive to triggering when touched by the sun for the first time. Watch for loose dry point releases in steep south facing terrain.
Weak layers of surface hoar and/or faceted grains may be found above a hard melt-freeze crust. Recent reports suggest the weak layers may be less prevalent in the south of the region, but still exist in localized pockets.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"989vs","text":"15-25 cm. of new snow since Christmas day has buried yet another weak layer of surface hoar that was widespread at treeline and below. Expect this new snow to become increasingly reactive to human triggers as it settles into a cohesive slab.
Southwesterly then northerly winds have potentially set up wind slab conditions on mainly northeasterly and southerly aspects in exposed locations.
Weak layers of surface hoar and/or faceted grains overlie a hard melt-freeze crust 30 to 80 cm deep. The new snow load before Christmas pushed this problem over the tipping point and resulted in large avalanches. Although the likelihood of triggering persistent slab avalanches is decreasing, the potential for triggering a high consequence avalanche should still be top of mind in your decision making process.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"989vs","text":"25-40 cm. of new snow since Christmas day has buried yet another weak layer of surface hoar that was widespread at treeline and below. Expect this new snow to become increasingly reactive to human triggers as it settles into a cohesive slab.
Avalanches on weak layers found 30-60 cm below the surface are becoming less likely to trigger, but there has been evidence they are still possible in certain locations. This spatial distribution of this problem is highly variable across the region and across terrain features. The variability and uncertainty about this problem warrants conservative terrain selection. An in-depth understanding of local snowpack conditions is recommended before venturing into challenging or complex avalanche terrain.
A couple problematic layers may be found around 50 to 120 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. There remains potential for storm slab avalanches to step down to these layers, resulting in large and destructive avalanches.
Another intense storm pulse will cause widespread storm slab avalanche activity, especially in exposed terrain where there will be significant wind loading. At lower elevations raising freezing levels could produce wet loose avalanches.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"989vs","text":"The 35-50 cm. of recent snow is most likely to be reactive in wind affected areas where the snow has been stiffened into a slab.
Be on the lookout for wind-loading in  lee north and east slopes from southwest winds.   Older buried windslabs and cross-loaded features on all aspects are also suspect.    ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":39,"length":3,"key":0},{"offset":116,"length":12,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":"LINK",
The 35-50 cm. of recent snow is most likely to be reactive in wind affected areas where the snow has been stiffened into a slab.
Wind slabs have been reactive on a variety of aspects due to variable wind direction. In sheltered terrain, the recent snow may also still be reactive to human triggers until it bonds to the snowpack.
Wind slabs may be found on all aspects in exposed terrain due to shifting winds. These slabs have been reactive to riders and may continue to be reactive during this warm period, particularly in steep alpine terrain.
A weak layer of surface hoar down 50-100 cm. has been reactive to human triggers, resulting in large avalanches.
You may find isolated pockets of stubborn old hard wind slabs, especially more extreme terrain immediately lee of ridge crest.
The primary concern is buried wind slabs lurking beneath our low density new snow on the leeward sides of ridges, ribs, and rolls in the terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1l2qr","text":"Watch for any uptick in wind in coming days creating touchier new slabs with the plentiful new snow available for wind transport.
Weak layers of surface hoar and/or faceted grains overly a hard melt-freeze crust around 50 to 100 cm deep. The likelihood of triggering these layers will remain likely as it stabilizes from the recently added snow load.
With 10-15 cm falling over the day Friday, around 30 cm of snow now overlies a hard crust. If triggered, storm slabs will slide easily on the crust. Thicker wind slabs may also be found at the mountain tops on all aspects due to variable wind directions.
Storm slabs will likely be reactive and require patience and time to settle and stabilize. These may be extra touchy on lee slopes where wind loading has built deeper slabs. Loose-dry sluffing from steep terrain is likely, especilly when the sun comes out.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":120,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LI
Recent new snow combined with moderate  winds have created wind slabs in the lee of terrain features on a variety of aspects.
Wind slabs are likley reactive on most aspects due to strong, changing winds and a lot of available snow to transport. Natural avalanches, whumphing, and shooting cracks in the snow are all indicators of a instability. Loose-dry sluffing from steep terrain is likely, especially when the sun comes out.
Fresh storm slabs on Friday will likely remain reactive, especially where they have been stiffened by the wind. Natural avalanche activity may begin to taper but human triggering is likely. A very conservative plan and terrain selection is key while avoiding overhead hazards like fresh cornices and large avalanche paths.
Wind slabs may be reactive to human triggering, especially in areas where the wind has stiffened the slab.  Wind slabs may be found on all aspects at upper elevations on Friday as the wind direction changes from southwest to southeast. Large and possibly fragile cornices may exist on alpine ridglines.
torm slabs in motion may step down to deeper weak layers, resulting in large avalanches.
A a variable but often reactive pair of weak layers exist below our recent storm snow (30-50 cm) and a bit deeper (40-80cm).  Depending on your elevation, aspect, and location in the region, these layers may present as either surface hoar (especially reactive) or a mix of facets and crust (not much better!) Wind slab releases may step down to one of these layers to create even larger avalanches. Keep your guard all the way up in the upper BTL.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":443,"length":3,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mu
Wind slabs may be reactive to human triggering, especially in areas where the wind has stiffened the slab.  Wind slabs may be found on all aspects at upper elevations because the wind direction has changed from southwest to southeast. Large and possibly fragile cornices may exist on alpine ridglines.
Small inputs of new snow with wind will refresh the wind slab problem. Wind slabs have been reactive on a variety of aspects due to variable wind direction. In sheltered terrain, the recent snow may also still be reactive to human triggers until it bonds to the snowpack.
New snow on Tuesday will fall with moderate to strong south winds which may form reactive wind slabs, especially where a buried surface hoar layer is present.   Very deep wind slabs (up to 1.5meters thick) have been reactive in recent days from last weeks storm.  Recent winds have been highly variable.  Reverse loading from east winds, cross-loading and buried wind slabs may be present. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":90,"length":10,"key":0},{"offset":305,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=wind+slab#wind-slab"}},"1":{"type":"LINK","mutab
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bhd81","text":"25-40 cm. of new snow since Christmas day has buried yet another weak layer of surface hoar that was widespread at treeline and below. Expect this new snow to become increasingly reactive to human triggers as it settles into a cohesive slab.
The primary concern is buried wind slabs lurking beneath our low density new snow on the leeward sides of ridges, ribs, and rolls in the terrain. Watch for any uptick in wind in coming days creating touchier new slabs with the plentiful new snow available for wind transport.
Wind slabs are likley reactive on most aspects due to strong, changing winds and a lot of available snow to transport. Predominately west / southwest winds are forecast and have been reported.  However, assess each slope carefully for wind loading. Natural avalanches, whumphing, and shooting cracks in the snow are all indicators of a instability. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cdgc5","text":"Be on the look-out for cornice formation: these are a hazard underfoot as well as being an overhead hazard that is capable of triggering large avalanches should they fail.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":23,"length":7,"key":0}],"data":{}},{"key":"5s657","text":"Loose-dry sluffing from steep terrain is likely, especially if the sun comes out.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":
Natural avalanche activity may taper off a bit with the end of the snowfall, but moderate to strong west/southwest winds are creating fresh windslabs on lee slopes making the snowpack primed for human triggering.  These may be touchy during periods of active wind transport. Be on the look-out for cornice formation: these are a hazard underfoot as well as being an overhead hazard that is capable of triggering large avalanches should they fail.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":153,"length":10,"key":0},{"offset":298,"length":7,"key":1}],"data":{}},{"key":"ev1hh","text":"Loose-dry sluffing from sheltered steep terrain is likely, especilly when the sun comes out.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":
A mix of weak layers may be found 30-80 cm below the surface. Depending on your location in the region, elevation, and aspect, these layers may present as either surface hoar (especially reactive) or a mix of facets and crust (not much better).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6h248","text":"Avalanches on these layers are becoming less likely to trigger over time, however there have been signs that they are still reactive in certain locations. The variability and uncertainty about this problem warrants conservative terrain selection.
ind switching directions has created wind slabs on a variety of aspects.
Wind slabs may be found on all aspects in exposed terrain due to shifting winds. These slabs have been reactive to riders and may continue to be reactive particularly in steep convex alpine terrain.
Be on the lookout for wind-loading in  lee slopes from a variety of westerly wind directions.   Older buried windslabs and cross-loaded features should also be suspect.     Large cornice have formed: these are a hazard underfoot as well as being an overhead hazard that is capable of triggering large avalanches should they fail.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":39,"length":3,"key":0},{"offset":123,"length":12,"key":1},{"offset":179,"length":7,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=cross#cross-loading"}},"2":{"type":
Moderate winds shifting in direction have created wind slabs in the lee of terrain features on a variety of aspects.
Wind switching directions has created wind slabs on a variety of aspects.
Wind slabs may have formed from northeast wind and continue to form on Thursday as the wind shifts to the southwest. Slabs could slide easily and travel far, as they may overly weak surface hoar.
Wind switching directions has created wind slabs on a variety of aspects
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"989vs","text":"30-50 cm. of new snow since Christmas day has buried yet another weak layer of surface hoar that was widespread at treeline and below. Expect this new snow to become increasingly reactive to human triggers as it settles into a cohesive slab; especially in wind affected terrain.
Storm totals may reach 60 cm by Saturday afternoon, with the most snow expected in the west of the region. Storm and wind slabs are likely building rapidly and they are loading buried weak layers. An avalanche cycle is expected to occur at some point during the next few days, producing very dangerous avalanche conditions.
As of Saturday afternoon the storm has produced 10 to 55 cm of snow and more is expected to fall Saturday night into Sunday. Storm slabs will likely be susceptible to human triggering and there is real concern that storm slabs in motion will step down and trigger very large persistent slab avalanches.
10-25cm new snow by Wednesday evening will fall with moderate to strong south/southwest winds.  This new snow may form reactive  wind slabs in immediate lee of ridgecrests at treeline and above, especially where a buried surface hoar layer is present.   ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":129,"length":10,"key":0}],"data":{}},{"key":"9mglj","text":"New snow will bury older wind slabs (up to 1.5 meters thick) from strong winds from the Christmas Eve storms, which have been reactive in recent days.  Winds from this Christmas period were highly variable and included periods of strong east winds that led to reverse loading and cross-loading.   ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":260,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=wind+slab#wind-slab"}},"1":{"type":"LINK","mutab
Fresh wind slabs will likely remain reactive, especially where they have been stiffened by the wind or where they sit atop a surface hoar layer that was reported from just before the recent storm.  Initially with the recent storm, winds were from the southwest but then shifted to the east as the storm left the region.  Thus all aspects near ridgecrest or wind affected terrain should be assessed for potential windslabs or buried windslabs.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1d4v6","text":"Natural avalanche activity may begin to taper but human triggering remains likely. A conservative plan and terrain selection is key while avoiding overhead hazards like fresh cornices and large avalanche paths.
Weak layers of surface hoar and/or faceted grains overly a hard melt-freeze crust around 60 to 80 cm deep. New snow loads before Christmas pushed the persistent slab problem over the tipping point resulting in large avalanches. Although the likelihood of triggering a persistent slab avalanche is decreasing, the potential for triggering a high consequence avalanche should still be top of mind in your decision making process.
Snow will accumulate over the day, producing storm slabs in sheltered terrain and wind slabs in exposed terrain. Use particular caution if you find more than 20 cm of snow accumulate and step out of avalanche terrain during periods of rapid snow accumulation (i.e., 2+ cm of snow an hour).
Weak layers of surface hoar and/or faceted grains overly a hard melt-freeze crust around 50 to 100 cm deep. Loading from recent storms have pushed the persistent slab problem over the tipping point resulting in large avalanches in the past week. We're being patient and sticking to conservative terrain for the next while until we have clear evidence that buried weak layers have stabilized.
A weak layer of surface hoar down 50-100 cm. has been reactive to human triggers, resulting in large avalanches.
Wind slabs are widespread from variable winds.  Recent new snow may have buried these slabs.  Observe wind effect like scouring, sastrugi, cross-loading and lee deposition for clues to how recent winds have reworked the terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":101,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK
30-40 cm of new snow is forecast to fall by the end of the day Saturday. This snow came in warm and is expected to adhere well to older snow. Thicker wind loaded pockets may be found in lee terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b4620","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b41je","text":"Around 50-60 cm of snow now overlies a thick crust. If triggered, storm slabs can slide easily on the crust.
Recent large human triggered avalanches failed on a very weak layer of surface hoar down 30-40 cm. and the sensitivity of this layer was described as \"electric\"! This layer has been found to be most prevalent in the areas surrounding Valemount.
We are in the midst of a stormy period that will build slabs at all elevations. The snow may be reactive in sheltered terrain where it could overly a weak layer of surface hoar. Strong wind from the southwest wind will create thick and touchy deposits in lee terrain features at higher elevations.
ind slabs formed with recent snowfall may continue to be reactive to riders.
Some new snow, strong southwest wind, and an increasing freezing level are forecast, which will likely form new wind slab adjacent to ridges, particularly in alpine terrain. A conservative mindset should be applied on Saturday as these slabs build.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"989vs","text":"30-50 cm. of new snow since Christmas day has buried yet another weak layer of surface hoar that was widespread at treeline and below. Expect this new snow to become increasingly reactive to human triggers as it settles into a cohesive slab; especially in wind affected terrain.
Weak layers of surface hoar and/or faceted grains overlie a hard melt-freeze crust 30 to 80 cm deep. The new snow load before Christmas pushed this problem over the tipping point and resulted in large avalanches. With new snow on Friday and over the weekend, the potential for triggering a high consequence avalanche may increase and should still be top of mind in your decision-making process.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bhd81","text":"25-40 cm. of new snow since Christmas day has buried yet another weak layer of surface hoar that was widespread at treeline and below. Expect this new snow to become increasingly reactive to human triggers as it settles into a cohesive slab.
As west/northwest winds pick up Monday be on the lookout for wind-loading in  lee east/southeast slopes.   Recent moderate to strong west/southwest winds have created old windslabs on north and east slopes and cross-loaded features.     Large cornice have formed: these are a hazard underfoot as well as being an overhead hazard that is capable of triggering large avalanches should they fail.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":78,"length":3,"key":0},{"offset":183,"length":1,"key":1},{"offset":210,"length":12,"key":2},{"offset":243,"length":7,"key":3}],"data":{}},{"key":"ev1hh","text":"Loose-dry sluffing from sheltered steep terrain is likely, especially if the sun comes out or when transitioning into steeper terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=leeward#leeward"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=cross#cross-loading"}},"3":{"type":
You may find isolated pockets of stubborn old hard wind slabs, especially in more extreme terrain immediately lee of ridge crest.
Fresh storm slabs reactive to human triggers will form throughout the day on Saturday.
Some new snow and southwest wind are forecast, which may form pockets of wind slab immediately adjacent to ridges. Use caution as you enter steep terrain and assess for the bond of this new snow before committing yourself.
Fresh storm slabs are likely to be especially reactive in wind loaded terrain features. Recent wind has varied in direction so these may be found on a variety of aspects. The fresh snow will also be sensitive to seeing the sun for the first time and rapid settlement may trigger natural releases.
The incoming storm is expected to form new slabs over the day, with the most snowfall expected in the west of the region.  The thickest deposits are expected to be in exposed terrain up high, as the snow will fall with strong southwest wind. The snow may overly a weak layer of surface hoar so the snow could slide easily.
Fresh storm slabs reactive to human triggers will form throughout the day on Saturday.
mall wind slabs in motion may step down to deeper weak layers, resulting in large avalanches.
Significant amounts of new snow with strong winds will form widespread storm slabs that will most likely be very reactive.
torm slabs in motion may step down to deeper weak layers, resulting in large avalanches.
Fresh and buried wind slabs will likely remain reactive to human triggering, especially where they sit atop a surface hoar layer that was reported from just before the recent storm.  Recent winds have been highly variable.  Reverse loading from east winds producing windslabs on leeward west and southwest slopes.  As winds shift to northwest then southwest be on the lookout for reactive windslabs on all aspects in exposed ridgtops, alpine and open below treeline features.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":17,"length":10,"key":0},{"offset":224,"length":15,"key":1},{"offset":278,"length":8,"key":2}],"data":{}},{"key":"dj8gk","text":"Watch out for cornice formation along ridgecrests: these are a hazard underfoot as well as being an overhead hazard that is capable of triggering large avalanches should they fail.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":14,"length":7,"key":3}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=wind+slab#wind-slab"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=wind+slab#reverse-loading"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=lee#leeward"}},"3":{"type":
Storm totals may reach 100 cm by Sunday afternoon, with the most snow expected in the west of the region. Storm and wind slabs are building rapidly and they are loading buried weak layers. If it isn't already underway, a natural avalanche cycle is expected to begin Saturday night, meaning very dangerous conditions will persist through Sunday.
Fresh storm slabs reactive to human triggers will form throughout the day on Saturday.
10 to 15 cm of snow is expected Saturday. Storm slabs will likely be susceptible to human triggering and there is real concern that storm slabs in motion will step down and trigger very large persistent slab avalanches.
Small new wind slabs formed at the end of the week as a result of elevated northeast outflow winds. Expect to find these in the immediate lee of exposed terrain features at higher elevations.
Reactive wind slabs may be found on steep alpine slopes and along ridgetops.
We are in the midst of a stormy period with new slabs building at all elevations. The snow may be reactive in sheltered terrain where it could overlie a weak layer of surface hoar. Strong wind from the southwest will create thicker and touchier deposits in lee terrain features at higher elevations.
revious snow and wind have created deep pockets of wind slab in lee terrain features at upper elevations. These were very reactive before the weekend and may remain sensitive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3boh2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8ci0","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Recent storm snow has been redistributed into wind slabs on leeward terrain.
Snow will accumulate over Saturday night and over the day on Sunday, building fresh storm slabs in avalanche terrain throughout the region. Expect natural avalanche activity to ramp up as 30 or more cm of new snow accumulates.
10-30 cm of new snow, strong southwest wind, and an increasing freezing level are in the forecast for Sunday. Expect to find touchy new wind slabs adjacent to ridges, particularly in alpine terrain. Where new snow totals exceed 20 cm, expect a more widespread storm slab problem affecting avalanche terrain on all aspects and elevations.
Heavy, wet snow will likely create widespread and reactive storm slabs at upper elevations","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
Strong winds and fresh snow will mean that new, reactive storm slabs are likely to form and they may become increasingly reactive throughout the day.
Fresh storm slabs reactive to human triggers will form throughout the night on Saturday.
Storm slabs may become increasingly reactive throughout the day.
New snow, strong winds and rising freezing levels have created widespread storm slabs ripe for human triggers.
Significant amounts of new snow with strong winds will form widespread storm slabs that will most likely be very reactive.
Intense wind from the southwest has left touchy slabs in leeward terrain. In some isolated sheltered areas recent snow may have formed slabs.
Storm slabs will likely become increasingly reactive in the afternoon as snowfall resumes.
Storm slabs will likely remain sensitive to human triggering Tuesday. Freshly wind loaded features will be most reactive.
Storm slabs will be widespread and very reactive due to significant snow amounts and strong winds.
Heavy, wet snow and wind will likely create widespread and reactive storm slabs at upper elevations","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
Be cautious with wind slabs in exposed terrain. Wind slabs were problematic in exposed features on Friday, and we're expecting another shot of wind Sunday which is likely to from fresh slabs in the alpine.
As of Saturday afternoon the storm has produced 10 to 55 cm of snow and more is expected to fall Saturday night into Sunday. Storm slabs will likely be susceptible to human triggering and there is real concern that storm slabs in motion will step down and trigger very large persistent slab avalanches.
New snow and wind will likely create widespread and reactive storm slabs at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
Strong winds may form fresh wind slabs throughout the day on lee features at treeline and above.
Strong southwesterly winds continue to form fresh wind slabs reactive to human triggers on lee features at treeline and above. Wind slabs in motion may step-down to deeper weak layers, resulting in large avalanches.
\nNew snow, strong winds and rising freezing levels have created widespread storm slabs ripe for human triggers.\n
New snow, strong winds and rising freezing levels have created widespread storm slabs ripe for human triggers.
Recent wind has varied in direction so wind loaded pockets of storm slab may be found on a variety of aspects. At lower elevations, storm slabs will remain reactive where they sit over surface hoar.
Strong southwest wind and a series of moderate snowfalls over the past few days has likely left reactive slabs in steep leeward terrain.
Significant amounts of recent snow with ongoing strong winds are forming widespread storm slabs that will most likely remain reactive.
Storm slabs may remain sensitive to human triggers, especially in freshly wind loaded features at upper elevations and where recent snow sits over surface hoar in wind sheltered areas.
Recent deposits of snow are still a concern for human triggering, especially at upper elevations and on freshly wind loaded slopes.
Storm slabs will be widespread and reactive due to continuous snowfall and strong winds.
Recent fresh snow and wind has formed storm slabs in many areas that will likely still be easy to trigger.
50-100 cm of recent snow and strong wind has left widespread storm slabs that can easily be triggered by skiers and sledders. These slabs sit above several concerning weak layers (surface hoar and crusts). Strong wind on Monday creates the additional danger of natural avalanches in the alpine.
10-30 cm of recent snow and strong southwest has formed storm slabs that may remain reactive to human triggering, especially at upper elevations and on freshly wind loaded slopes.
New snow and recent strong winds have created widespread storm slabs that are still likely to be triggered by humans in many areas.
Previous snow and wind have created deep pockets of wind slab in lee terrain features at upper elevations. These were very reactive before the weekend and may remain sensitive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c1sk7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5c0cf","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Previous snow and wind have created deep pockets of wind slab in lee terrain features at upper elevations. These were very reactive before the weekend and may remain sensitive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8dld2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c5mt0","text":"Any soft snow that remains available for transport will likely be blown into fresh, reactive wind slabs by strong winds Sunday.
Extreme winds may form fresh wind slabs throughout the day on lee features at treeline and above. Wind slabs in motion may step-down to deeper weak layers resulting in large avalanches.
Hard wind slabs may be stubborn, however slabs will be dense and firm when triggered.
Strong winds may form fresh wind slabs throughout the day on lee features at treeline and above. Wind slabs in motion may step-down to deeper weak layers resulting in large avalanches.
Stormy weather on Monday night will create a new storm slab problem. Some natural avalanches may occur in the alpine during the peak of the storm overnight, and then human triggered avalanches will remain likely on Tuesday. With only 10-20 cm of snow expected, the most likely spots for human triggering will be on slopes that have been loaded by wind.
Strong southwest wind and a series of moderate snowfalls over the past few days has likely left reactive slabs in steep leeward terrain.
New snow and wind will likely create widespread and reactive storm slabs at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
Recent fresh snow and wind has formed storm slabs in many areas that will likely still be easy to trigger, including at lower elevations where it may sit on a buried weak layer.
New snow and recent strong winds have created widespread storm slabs that are still likely to be triggered by humans in many areas.
New snow and recent strong winds have created storm slabs that will likely still be easy to trigger, especially in wind loaded areas and at lower elevations where they may sit on a buried weak layer.\n
Recent snow and strong winds have created new slab problems that are likely to vary with elevation and wind exposure. In exposed areas, thick and reactive wind slabs should be expected in leeward features loaded by the wind. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar (think shaded slopes).
Recent storm snow has been blown into wind slabs in leeward terrain at upper elevations.
Storm slabs may remain sensitive to human triggers, especially in freshly wind loaded features at upper elevations and where recent snow sits over surface hoar in wind sheltered areas.
Overnight snowfall combined with wind has possibly created reactive storm slabs in the south of the region. Deepest deposits can be found in lee terrain with forecast strong to extreme southwest wind.
Overnight snowfall combined with wind has likely created widespread and reactive storm slabs. Forecast strong to extreme southwest wind has likely created deep deposits in exposed lee terrain.
Heavy snowfall combined with wind will likely create widespread and reactive storm slabs at uppermost elevations. Forecast strong to extreme southwest wind Tuesday night has likely created deep deposits in exposed lee terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
As the 20-60 cm we received from the weekend storm gradually settles and bonds to the old surface, wind loaded areas remain suspect. Recent reports suggest wind has been redistributing snow even in lower elevation openings in forested areas and more strong to extreme winds are in the forecast. Wind slab avalanches may have potential to step down to deeply buried weak layers in areas where these are well preserved.
Watch for new wind slabs in wind-exposed terrain. Forecast light flurries and elevated winds are likely to from fresh slabs on a continuous basis for the next few days.
Strong southwest wind and a series of moderate snowfalls over the past few days has likely left wind slabs in steep leeward terrain.
Recent flurries have resulted in new wind slabs forming in leeward pockets at ridgecrests and around exposed terrain features.
The final storm pulse on Wednesday will bring 20-40 cm of snow, resulting in another round of storm slab avalanche activity. Natural activity will be especially likely in higher open terrain where there will be significant drifting, while human triggering remains likely on all steep slopes. Storm slabs have been very reactive in the Shames area, as they seem to be sitting above touchy surface hoar and crust layers.
Intense wind from the south has left touchy slabs in leeward terrain. Most of the wind loading should be on northeast slopes, but shifting winds over the past few days may have left unstable slabs on all aspects. In some isolated sheltered areas recent snow may be settling above surface hoar.
Snowfall combined with wind Tuesday night has created reactive storm slabs. Strong to extreme wind from a variety of directions has likely created deep deposits in exposed lee terrain.
Heavy snowfall combined with strong southwest wind Tuesday night has likely created storm and windslabs slabs at uppermost elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
New snow combined with primarily southwest wind on Tuesday night has created new reactive wind slabs.
Recent snow at upper elevations is not expected to adhere well to the crust and may become increasingly reactive with rising temperatures and sunshine. Deeper pockets of wind deposited storm slab may exist in leeward terrain features.
Storm slabs may remain sensitive to human triggers, especially in freshly wind loaded features at upper elevations and where recent snow sits over surface hoar in wind sheltered areas.
Recent fresh snow and wind has formed storm slabs in many areas that may still be easy to trigger, especially at lower elevations where they may sit on a buried weak layer.
Recent new snow with some moderate wind has created widespread storm slabs that are still likely to be triggered by humans in many areas.
Recent new snow with some moderate wind has created widespread storm slabs that are still likely to be triggered by humans in many areas.
A week of stormy weather has left widespread storm and wind slabs. On Thursday, isolated flurries and strong wind could still cause natural avalanches at higher elevations, while human triggered slabs are a likely at all elevations. Minimizing exposure to overhead avalanche terrain remains important because storm slab avalanches could run long distances right now.
Intense wind from the south has left touchy slabs in leeward terrain. Most of the wind loading should be on northeast slopes, but shifting winds over the past few days may have left unstable slabs on all aspects. In some isolated sheltered areas recent snow may be settling above surface hoar.
Strong southwest wind and a series of moderate snowfalls over the past few days has likely left reactive slabs in steep leeward terrain.
Strong southwest wind and a series of moderate snowfalls over the past few days has likely left wind slabs in steep leeward terrain.
Recent southwest winds have created reactive wind slabs in exposed lee terrain.
Previous snow and wind have created deep pockets of wind slab in lee terrain features at upper elevations. These were very reactive before the weekend and may remain sensitive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"90fs3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8fpjc","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
revious snow and wind have created deep pockets of wind slab in lee terrain features at upper elevations. These were very reactive before the weekend and may remain sensitive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3boh2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8ci0","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Recent strong winds have formed widespread wind slabs in lee terrain all the way down below treeline in some areas.
Recent convective flurries in parts of the region, solar radiation, and light to moderate winds may have formed wind slabs in isolated alpine locations. Steep, convex slopes below alpine ridgetops are the most likely places to trigger these slabs.
Lingering wind slabs remain possible to human trigger in isolated areas. Wind slabs in motion may step-down to deeper weak layers resulting in large avalanches.
Recent strong winds have formed widespread wind slabs in lee terrain at upper elevations.
Strong winds may form fresh wind slabs throughout the day on lee features at treeline and above. Wind slabs in motion may step-down to deeper weak layers resulting in large avalanches.
Storm slabs may remain sensitive to human triggers, especially in freshly wind loaded features at upper elevations and where recent snow sits over surface hoar in wind sheltered areas.
Strong to extreme southerly wind Tuesday night has created widespread wind effect. Expect to see deep wind deposits in exposed lee terrain.
Recent strong southerly wind has likely created windslabs slabs at uppermost elevations in lee terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
New snow combined with primarily southwest wind on Tuesday night has created reactive wind slabs.
Strong southwest wind and a series of moderate snowfalls over the past few days has likely left reactive slabs in steep leeward terrain.
A week of stormy weather has left widespread storm slabs ripe for human triggers. Slabs will be most reactive in wind affected terrain.
Strong southwest wind and a series of moderate snowfalls over the past few days has likely left wind slabs in steep leeward terrain.
Intense wind from the south has left touchy slabs in leeward terrain. Most of the wind loading should be on northeast slopes, but shifting winds over the past few days may have left unstable slabs on all aspects. In some isolated sheltered areas recent snow may be settling above surface hoar.
Wind slabs may remain sensitive to human triggers, especially in freshly wind loaded features at upper elevations.
Winds will move any snow left for transport. Hard wind slabs may be stubborn, however slabs will be dense and firm when triggered. Give cornices their space.
Watch for new wind slabs in wind-exposed terrain. Forecast light flurries and elevated winds are likely to from fresh slabs on a continuous basis for the next few days.
As last weekend's storm snow gradually settles and bonds to the old surface, wind loaded areas remain suspect. Recent reports suggest wind has been redistributing snow even in lower elevation openings in forested areas and more strong winds are in the forecast.
Light snowfall with strong winds will likely form small wind slabs in lee and cross-loaded features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"90fs3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f8sdq","text":"Older, thicker wind slabs were very reactive before the weekend and may remain sensitive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4jndt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8fpjc","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Recent strong southerly wind has likely created windslabs slabs at uppermost elevations in lee terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
Recent snow and moderate wind have created deep pockets of reactive wind slab in lee terrain features at upper elevations. There have been several instances of human triggered wind slab avalanches around size 2 in the last few days.
Recent new snow with some moderate wind has created widespread storm slabs that may still be easy to trigger in some areas.
Recent snow and moderate wind have created deep pockets of reactive wind slab in lee terrain features at upper elevations. These will likely remain sensitive to human triggers.
West/southwest wind has been the theme for the last few days and it looks like plenty more is in store this weekend. The existing wind slabs are getting harder to trigger as they age and there isn't too much snow left to form into fresh slabs.  That being said, the riding in wind affected terrain isn't great, and your best bet is to seek out wind sheltered terrain where you can avoid wind slabs and have a great day.
Recent fresh snow with some moderate wind has created storm slabs that may still be easy to trigger in some areas.
ecent new snow and strong southwest winds have likely formed wind slabs in lee terrain.
ecent new snow and strong southwest winds have formed wind slabs in lee terrain.
Wind slabs.  They're now everywhere, and we expect them to remain problematic through the weekend as more wind and snow come into the picture.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6a90c","text":"Up high the wind slabs are fat and hard. In the alpine you need to be careful to avoid the spots where the slabs are thinner and thus easier to trigger.  Ridge crest is one of those places where hard slabs are often triggered.  Rock outcroppings are another problem area.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":195,"length":10,"key":0}],"data":{}},{"key":"5e8sk","text":"At treeline the slabs are softer, but easier to trigger. At this elevation slabs may be resting on surface hoar which could make them quite sensitive to human triggering. Problem areas at treeline include convexities and terrain traps. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":205,"length":11,"key":1},{"offset":221,"length":13,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.org/avalanche-encyclopedia/hard-slab-avalanche/"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=convex#convex-slope"}},"2":{"type":"LINK","mutab
Recent southwest winds have created reactive wind slabs.
Recent strong southerly wind has likely created windslabs slabs at uppermost elevations in lee terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
Wind slabs may remain sensitive to human triggers, especially in freshly wind loaded features at upper elevations.
Winds will impact any loose snow available. Hard wind slabs may be stubborn, however slabs will be dense and firm when triggered.
New snow and extreme winds will form widespread storm slabs reactive to human triggers.
Light snowfall with strong winds will likely form small wind slabs in leeward terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"58qlj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5psjv","text":"Older, thicker wind slabs were very reactive before the weekend and may remain sensitive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dqdkm","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"alspl","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Recent strong to extreme southerly wind has created widespread wind effect. Expect to see deep wind deposits in exposed lee terrain.
15 to 25 cm of new snow has fallen in the last week. At lower elevations this snow is resting on surface hoar. We haven't heard much about reactivity with this surface hoar yet, but it could reach the tipping point anytime. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8d846","text":"In wind exposed terrain at and above treeline the new snow has been shifted into wind slabs in exposed terrain by ongoing west & southwest wind.
Forecast strong southerly winds may form fresh wind slabs reactive to human triggers in open terrain at treeline and above.
Lingering wind slabs remain possible to human trigger in isolated areas. Wind slabs in motion may step-down to deeper weak layers resulting in large avalanches.
It could be possible to trigger isolated slabs on steep slopes at higher elevations (especially those without a surface crust).
Previous wind has deposited recent snow into deeper slabs on leeward slopes at upper elevations. Wind slabs may remain reactive, particularly where they sit over surface hoar in sheltered terrain or a crust. Recent wind has varied in direction so watch for wind loading on a variety of aspects.
Previous snow and wind have created deep pockets of wind slab in lee terrain features at upper elevations. These were very reactive before the weekend and may remain sensitive to human triggers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c1sk7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5c0cf","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Riders may still trigger wind slabs due to snow transportation from recent southwest wind. The most suspect terrain features are wind-loaded pockets at higher elevations.
New storm and wind slabs are expected to build during Sunday night's storm, which are expected to e touchy on Monday. Extreme (up to 120 km/h) wind from the northeast to southeast has occurred at the mountain tops, so wind slabs are expected to be rapidly forming. Avoid being lured into committing avalanche terrain during clear periods on Monday.
Strong winds and fresh snow may form new wind slabs throughout the day on lee features in the alpine and at treeline.
Snow accumulation above the snow-rain line will likely be reactive to riders on Monday. Slabs will be thickest in lee terrain features, as the snow will fall with strong southwest wind. Best to avoid avalanche terrain if you find more than 30 cm of snow accumulation.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
New storm slabs will form on Monday as snow accumulates. The new snow may be touchy to riders on Monday. New wind slabs are expected to form at higher elevations due to strong southerly wind.
New snow and strong, gusty winds may form reactive wind slabs on lee features at treeline and above.
Heavy snowfall will rapidly load the snowpack. Expect slabs to be widespread and reactive.
20-40 cm of recent storm snow with previous strong to extreme ridgetop wind have formed reactive storm and wind slabs at upper elevations. The wind is forecast to shift northwest on Friday so watch for wind loading on a variety of aspects.
Cornices have grown large, saggy and fragile. A few recent cornice falls have triggered avalanches on the slopes below. Many that haven't fallen are showing pull-away cracks.
Strong winds may form fresh wind slabs throughout the day on lee features at treeline and above. Wind slabs in motion may step-down to deeper weak layers resulting in large avalanches.
New snow and extreme winds will form widespread storm slabs reactive to human triggers at all elevations.
Strong winds may form fresh wind slabs throughout the day on lee features at treeline and above. Wind slabs in motion may step-down to deeper weak layers resulting in large avalanches.
West/southwest wind has been the theme for the last few days and it looks like plenty more is in store Sunday/Monday. The existing wind slabs are getting harder to trigger as they age but human triggering remains possible, especially in extreme terrain. There isn't too much snow left to form into fresh slabs but the riding in wind effected country isn't great. Seek out wind sheltered features where you can avoid wind slabs and have a great day.
An uptick in northeast winds on Thursday formed new wind slabs, especially across south to southwest aspects in the alpine. These more recent slabs may remain sensitive to human triggers on Saturday. Older, more stubborn wind slabs may be found on a wide range of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8khl9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ctk0n","text":"Recent faceting and loss of cohesion in cornices can make them brittle and prone to fail. Give them a wide berth from above and below.
Further snowfall and wind may form small pockets of wind slab in exposed terrain. The softest riding conditions will likely be in sheltered areas around treeline.
Wind slabs. They're now everywhere, and we expect them to remain problematic through the forecast period as more wind and snow come into the picture.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6a90c","text":"Up high the wind slabs are fat and hard. In the alpine you need to be careful to avoid the spots where the slabs are thinner and thus easier to trigger.  Ridge crest is one of those places where hard slabs are often triggered.  Rock outcroppings are another problem area.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":195,"length":10,"key":0}],"data":{}},{"key":"5e8sk","text":"At treeline the slabs are softer, but easier to trigger. At this elevation slabs may be resting on surface hoar which could make them quite sensitive to human triggering. Problem areas at treeline include convexities and terrain traps. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":205,"length":11,"key":1},{"offset":221,"length":13,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.org/avalanche-encyclopedia/hard-slab-avalanche/"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=convex#convex-slope"}},"2":{"type":"LINK","mutab
Strong winds may form fresh wind slabs throughout the day on lee features at treeline and above. Wind slabs in motion may step-down to deeper weak layers resulting in large avalanches.
Fresh snow and moderate southwest winds are expected to form storm slabs throughout the day. These may become more reactive as the day goes on and the new snow piles up.
Recent snow and strong winds have created new slab problems that are likely to vary with elevation and wind exposure. In exposed areas, thick and reactive wind slabs should be expected in leeward features loaded by the wind. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar. Both problems will be greatest in the southern half of the region.
New snow and strong winds have created new slab problems that are likely to vary with elevation and wind exposure. In exposed areas, thick and reactive wind slabs should be expected in leeward features loaded by the wind. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar or crust.
Storm slabs are expected to be widespread and reactive.
New storm slabs will continue to build Monday night and Tuesday. The new snow/ rain load will destabilize the snowpack and natural avalanches are likely. New wind slabs are expected to form at higher elevations due to strong southerly wind.
New storm slabs will continue to build Tuesday. The new snow/ rain load will destabilize the snowpack and natural avalanches are likely. New wind slabs are expected to form at higher elevations due to strong southerly wind.
New and reactive storm and wind slabs are expected to build during Tuesday's storm. Extreme (up to 120 km/h) wind from the northeast to southeast has occurred at the mountain tops, so wind slabs are expected to be rapidly forming.
Snow accumulation (forecast above 1700 m) above the snow-rain line will likely build reactive slab avalanches. Slabs will be thickest in lee terrain features, as the snow will fall with strong southwest wind. Avoid avalanche terrain if you find more than 30 cm of snow accumulation.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":17,"length":24,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"e9sih","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
It could be possible to trigger isolated slabs on steep slopes at higher elevations (especially those without a surface crust).
New snow and strong winds have created new slab problems that are likely to vary with elevation and wind exposure. In exposed areas, thick and reactive wind slabs should be expected in leeward features loaded by the wind. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar or crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c1sk7","text":"
Strong overnight wind from the northwest has likely blown any available loose snow into small but reactive fresh wind slabs in leeward terrain features at upper elevations.
p to 40 cm of new snow, coupled with strong winds have loaded the avalanche terrain in the region with new slab problems. In exposed areas, thick and reactive wind slabs should be expected in leeward features. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar or crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8ci0","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Incremental loading along with strong winds continues to develop storm slabs, expect slabs to be widespread and reactive.
If winds pick up to moderate levels, snow may begin to form isolated wind slabs in the immediate lee of windy exposed ridge crests, in cross-loaded features or in steep alpine areas.  Older hard wind slabs in the alpine linger, and while they are increasingly unlikely to trigger, they have the potential to propagate widely.   Cornices continue to grow fragile with cold temperatures.
New snow is not expected to adhere well to the crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
Up to 30 cm of snow fell recently in the region. With ongoing strong winds, fresh slab formation is likely still occurring. These slabs will be easiest to trigger in wind loaded areas.
10-25 cm of recent snow and variable winds have created wind slabs on lee features at upper elevations. Given the shift in wind direction, wind slabs should be expected in leeward features across a wide range of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":56,"length":10,"key":0}],"data":{}},{"key":"c1sk7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
New and reactive storm and wind slabs are expected to linger after the storm. Strong to extreme southwest wind will persist depositing recent snow into deeper slabs on leeward slopes in the alpine. Cornices have grown large and may be fragile. They deserve respect and a wide berth from below and above. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8i9kq","text":"
Fresh wind slabs are likely forming with some new snow and strong to extreme winds.
Widespread new and reactive wind slabs exist at higher elevations as a result of strong easterly winds on Friday. All except due east aspects are well represented in Friday's reports.
Ongoing snowfall and flurries continue to drive the ongoing storm slab hazard. Increasing wind and rising freezing levels through Monday will further shake the snowpack and elevate hazard. Expect slabs to be widespread and reactive.
Wind slabs are stubborn, but if triggered will be heavy and dense. Use caution around cornices.
20-40 cm of new snow is expected between Thursday night and Friday afternoon. Storm slabs are expected to be widespread.
Previous wind has deposited recent snow into deeper slabs on leeward slopes at upper elevations. Wind slabs may remain reactive, particularly where they sit over surface hoar in sheltered terrain or a crust on solar aspects. Cornices have grown large, saggy and fragile.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8i9kq","text":"
Previous wind has deposited recent snow into deeper slabs on leeward slopes at upper elevations. It remains a possibility for isolated wind slabs to react to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8k4bv","text":"Cornices have grown large, saggy and fragile.
Over 50 cm of recent snow with ongoing strong wind continues to form fresh storm and wind slabs in the region. These will likely be the most reactive in leeward terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":153,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{
New snow falling with west and southwest winds Tuesday night have likely formed wind slabs in exposed terrain at higher elevations.
If winds pick up Tuesday to moderate, watch for wind transport and be on the look out for fresh wind slabs in the immediate lee of windy ridge crests, along cross-loaded slopes or in steep alpine terrain.  Cornices continue to weaken.
Further snowfall and wind will form wind slabs in exposed terrain. The softest riding conditions will likely be in sheltered areas around treeline.
Previous wind has deposited recent snow into deeper slabs on leeward slopes at upper elevations. Wind slabs may remain reactive, particularly where they sit over a spotty layer of surface hoar or a crust on solar aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dvm08","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8k4bv","text":"Cornices have grown large, saggy and fragile.
Overnight wind from the northwest has likely blown new snow into fresh wind slabs in atypical terrain features. These will be especially reactive where they sit over a rain crust or large surface hoar crystals.
New snow and extreme southwest winds on Monday night will form widespread storm slabs that will likely remain reactive on Tuesday.
New snow and strong winds are likely forming fresh wind slabs in leeward terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c1sk7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5c0cf","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
New and reactive storm and wind slabs are expected to linger after the storm. Strong southwest wind will persist depositing recent snow into deeper slabs on leeward slopes in the alpine. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8i9kq","text":"
The new snow/ rain load will destabilize the snowpack and natural avalanches are likely on Wednesday. New wind slabs are expected to form at higher elevations due to strong southerly wind.
Snow accumulation above the snow-rain line will likely build reactive slab avalanches. Slabs will be thickest in lee terrain features, as the snow will fall with strong southwest wind. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":17,"length":1,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
bit of new snow and wind are likely forming fresh wind slabs in leeward terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3boh2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8ci0","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
As of Saturday morning the storm has produced 30+ cm of new snow with wind out of the south. A temperature rise to near 0 C has induced recent avalanche activity and temperatures are expected to rise again Saturday afternoon. The new snow will need time to settle and stabilize, especially at upper elevations where it's expected to be redistributed into stiffer slabs by south wind.
New snow and strong winds are likely forming fresh wind slabs in leeward terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4jndt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8fpjc","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Light snowfall with strong winds are likely forming fresh wind slabs in leeward terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dqdkm","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"alspl","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
New snow and strong wind are forecast for Tuesday and Wednesday. Storm slabs may form rapidly with relatively mild air temperature. In sheltered areas, the snow may overly weak surface hoar, meaning the snow could slide easily. Strong wind is also forecast, likely forming wind slabs in exposed terrain at higher elevations.
New snow and strong winds are likely forming fresh storm and wind slabs at upper elevations. Expect to find deepest deposits in lee terrain.
New snow and strong winds are likely forming fresh storm and wind slabs at upper elevations. Expect to find deepest deposits in lee terrain.
bit of new snow and wind are likely forming fresh wind slabs in leeward terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3boh2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8ci0","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
New snow and strong winds are likely forming fresh storm and wind slabs at upper elevations. Expect to find deepest deposits in lee terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c1sk7","text":"
Wind slabs may continue to be reactive to human triggers at upper elevations. They may also be hidden in some areas, under a few cm of fresh snow. Previous winds have been strong to extreme from a variety of directions, so wind slabs could exist on all aspects.
Storm slabs are expected to be widespread and are likely still easy to trigger, especially in wind loaded areas.
Lots of new snow has fallen in the region with strong to extreme winds. Natural avalanches are expected.
Recent snow accumulations ranging from 15-25 cm are being redistributed by variable winds into wind slabs that may be possible to trigger on lee features at upper elevations. Given the variability in wind direction, anticipate wind slabs across a wide range of aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":95,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Recent storm snow has been blown into wind slabs in leeward terrain at upper elevations.
Previous wind has deposited recent snow into deeper slabs on leeward slopes at upper elevations. Wind slabs may remain reactive, particularly where they sit over surface hoar or a crust on solar aspects. Cornices have grown large, saggy and fragile.
Previous wind has deposited recent snow into deeper slabs on leeward slopes at upper elevations. Wind slabs may remain reactive, particularly where they sit over surface hoar in sheltered terrain or a crust. Recent wind has varied in direction so watch for wind loading on a variety of aspects.
Recent storm snow has been redistributed into wind slabs on leeward terrain.
We have very little data and a lot of uncertainty around alpine conditions in this region. We suspect any dry snow at the highest elevations has been blown into wind slabs. There may be a number of crusts within this snow due to fluctuating freezing levels through the storm.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
Up to 40 cm of recent storm snow blanketed the region. Strong to extreme ridgetop wind came with the storm building reactive storm and wind slabs at upper elevations.
New and reactive storm and wind slabs are expected to linger after the storm. Strong to extreme southwest wind will persist depositing recent snow into deeper slabs on leeward slopes in the alpine. Cornices have grown large and may be fragile. They deserve respect and a wide berth from below and above. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8i9kq","text":"
New and reactive storm and wind slabs are expected to linger after the storm. Strong southwest wind will persist depositing recent snow into deeper slabs on leeward slopes in the alpine. Cornices may have grown large and fragile. They deserve respect and a wide berth from below and above. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bu7dd","text":"
New and reactive storm slabs will continue to build by Wednesday. The new snow/ rain load will destabilize the snowpack and natural avalanches are likely. New wind slabs are expected to form at higher elevations due to strong southerly wind.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bu7dd","text":"This problem may not be prevalent at lower elevations where the precipitation fell as rain in the South. Lower elevations may develop a crust as freezing levels drop.
Watch for freshly wind loaded pockets of storm slab on leeward slopes in the alpine. Cornices have grown large and fragile. They deserve respect and a wide berth from below and above. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bu7dd","text":"
New snow and strong winds have created new slab problems that are likely to vary with elevation and wind exposure. In exposed areas, thick and reactive wind slabs should be expected in leeward features loaded by the wind. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar. Both problems will be greatest in the southern half of the region.
New snow and strong winds have created new slab problems that are likely to vary with elevation and wind exposure. In exposed areas, thick and reactive wind slabs should be expected in leeward features loaded by the wind. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar or crust.
New snow and strong winds have created new slab problems that are likely to vary with elevation and wind exposure. In exposed areas, thick and reactive wind slabs should be expected in leeward features loaded by the wind. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar or crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c1sk7","text":"
p to 40 cm of new snow, coupled with strong winds have loaded the avalanche terrain in the region with new slab problems. In exposed areas, thick and reactive wind slabs should be expected in leeward features. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar or crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3boh2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8ci0","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Recent snow and strong winds have created new slab problems that are likely to vary with elevation and wind exposure. In exposed areas, thick and reactive wind slabs should be expected in leeward features loaded by the wind. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar (think shaded slopes). Both problems will be greatest in the southern half of the region.
Storm slabs are expected to be widespread and are likely still easy to trigger, especially in wind loaded areas.
Over 50 cm of new snow with strong to extreme winds have formed widespread storm slabs in the region.
Up to 30 cm of recent fresh snow fell in the region with significant winds. Triggering storm slabs will be most likely in wind loaded areas.
Wind slabs may continue to be reactive to human triggers at upper elevations. Previous winds have been strong to extreme from a variety of directions, so wind slabs could exist on all aspects.
An uptick and shift to easterly winds on Thursday formed new wind slabs at upper elevations that will likely remain sensitive to human triggers. Given the recent variability in wind direction and unusual loading pattern, treat all aspects as suspect. Cornices may be reaching their breaking point.
Recent snow and strong winds have created new slab problems that are likely to vary with elevation and wind exposure. In exposed areas, thick and reactive wind slabs should be expected in leeward features loaded by the wind. In sheltered areas, storm slabs are more likely to exist uniformly across all aspects and be particularly touchy where they overlie surface hoar (think shaded slopes).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c1sk7","text":"
Fresh wind slabs are likely forming with some new snow and strong winds.
A couple of problematic layers may be found around 100 to 200 cm deep, including a weak layer of faceted grains above a melt-freeze crust. A few high-consequence avalanches have been triggered naturally and by riders recently near Whistler.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"46h8v","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dpkhg","text":"Read what a local guide has to say about these persistent weak layers here.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":70,"length":4,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE
Fresh wind slabs are likely forming with some new snow and strong to extreme winds.
By Monday afternoon there will likely be 50-75 cm of recent fresh snow, resulting in thick and reactive storm slabs. Expect natural avalanches in steep terrain during periods of heavy loading, while human triggered avalanches will be likely throughout the day.
p to 40 cm of storm snow, coupled with strong winds have loaded avalanche terrain in the region with new slab problems. In exposed areas, thick and reactive wind slabs should be expected in leeward features. In sheltered areas, storm slabs are more likely to be reactive where they overlie a fragile layer of surface hoar. (Think shaded, wind protected slopes around treeline)","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8ci0","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Another 20 cm of snow is expected on Saturday with strong winds. Storm slabs are likely widespread and reactive.
It's been a stormy period and Monday's warm storm has produced almost 10 cm as of 2:00 PM Monday. This makes for a little over 40 cm since Friday evening which has been accompanied by strong southwest wind. The upper snowpack will need a bit of time to adjust to this new load, but incoming cool temperatures should help with that process.
Strong overnight wind has likely redistributed small amounts of recent snow into wind slabs in lee terrain features at upper elevations. They could be especially reactive where they sit over a rain crust or large surface hoar crystals.
Recent snow and strong winds have created slab problems that vary with elevation and wind exposure. In exposed areas, thick wind slabs should be expected in leeward features across a wide range of aspects. In sheltered areas, storm slabs are more likely to be reactive where they have formed over a fragile layer of surface hoar (think shaded slopes).
A storm that is forecast to impact the north of the region is expected to bring a buried layer of surface hoar to a critical load in sheltered areas while forming new and reactive wind slabs at upper elevations. In the south of the region, sufficient load already exists over this buried weak layer for it to produce large avalanches on suspect slopes and the wind slab problem (likely a bit less reactive) already exists.
p to 40 cm of storm snow, coupled with strong winds have loaded avalanche terrain in the region with new slab problems. In exposed areas, stubborn wind slabs should be expected in leeward features. In sheltered areas, storm slabs are more likely to be reactive where they overlie a fragile layer of surface hoar. (Think shaded, wind protected slopes around treeline)","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7ofne","text":"Cornices have also been growing. A cornice fall is a large load that can trigger avalanches on the slope below.
Wind slabs may remain triggerable by humans. Be aware of the potential for wind loading in atypical terrain features due to recent variable wind directions.
Hard wind slabs may be stubborn, however slabs will be dense and firm when triggered. Give cornices their space.
Recent snow and strong winds have created slab problems that vary with elevation and wind exposure. In exposed areas, thick wind slabs should be expected in leeward features on a wide range of aspects. In sheltered areas, storm slabs are more likely to be reactive where they overlie surface hoar (think shaded slopes).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c1sk7","text":"
Wind slabs at higher elevations could remain reactive to human triggers on Saturday, especially more recent formations and in areas where slabs may have formed over a crust (think solar aspects). Northeast outflow winds may have focused recent slab formation on south through east aspects, but winds are set to shift and we already have reports of new slabs on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":361,"length":3,"style":"ITALIC"}],"entityRanges":[],"data":{}},{"key":"4s2jd","text":"Increase your caution even more around large, hard wind slabs in alpine areas. these may overlie weak, sugary, faceted snow.
Cornices are growing fragile with continued cold temperatures.  Cornice failures are a significant hazard on their own - but can also trigger stubborn wind slab avalanches when they fail.
Variable winds shifting to easterly may transport the 10-20 cm of recent snow and build fresh wind slabs in immediate lee of windy ridge crests in the alpine and at treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9bt7r","text":"Fresh snow deposits may be particularly reactive anywhere snow has developed slab properties over buried surface hoar, such as wind loaded lee areas.  Elsewhere, loose snow avalanches (sluffs) can be expected in all steep terrain.
15 to 25 cm of new snow has fallen in the last week, and we're expecting 5 to 10 cm Saturday night with an additional 5 to 15 cm on Sunday. At lower elevations there may be surface hoar under all of the new snow. We haven't heard much about reactivity with this surface hoar yet, but it could reach the tipping point anytime.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9lqho","text":"In wind exposed terrain at and above treeline the new snow has been shifted into wind slabs by ongoing west & southwest wind. Northwest wind Saturday night into Sunday is expected to continue to form fresh slabs.
10-25 cm of recent snow and shifting winds have created storm slabs that vary with elevation and wind exposure. In exposed areas, thick wind slabs should be expected in leeward features across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":56,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{
15-25 cm of recent snow and shifting winds have created storm slabs that vary with elevation and wind exposure. In exposed areas, thick wind slabs should be expected in leeward features across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":56,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{
It may be possible to trigger pockets of windslab at upper elevations from recent east to south wind.
Winds have impacted loose snow at all elevations, including exposed terrain below treeline.
Recent snow accumulations ranging from 15-25 cm are being redistributed by variable winds into wind slabs on lee features at upper elevations. Given the variability in wind direction, anticipate wind slabs across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":95,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Recent snow accumulations ranging from 10-25 cm are being redistributed by variable winds into wind slabs on lee features at upper elevations. Given the variability in wind direction, anticipate wind slabs across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":95,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Strong overnight wind from the northwest has likely blown any available loose snow into small but reactive fresh wind slabs in leeward terrain features at upper elevations.
Shifting wind has deposited recent snow into deeper slabs on leeward slopes making it possible to trigger wind slab avalanches. Cornices have also grown large, saggy, and fragile.
Cornices have grown large, saggy and fragile. A few recent cornice falls have triggered avalanches on the slopes below.
Although unlikely to trigger, hard wind slabs in the alpine have the potential to propagate widely.   Additionally, cornices are growing fragile with continued cold temperatures.  Cornice failures are a significant hazard on their own - but can also trigger stubborn wind slab avalanches if they fail.
40-60 cm of storm snow and strong, shifting winds have created widespread wind slabs on all aspects and elevations. These are becoming quite stubborn to trigger but may still react to the weight of a person or machine on steeper slopes. Large hard wind slabs in the alpine are a primary concern.
ecent snow accumulations ranging from 5-15 cm are being redistributed by variable winds into wind slabs on lee features at upper elevations. Given the variability in wind direction, anticipate wind slabs across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":94,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
5-15cm of recent snow fell over the weekend with light to moderate south/southeast winds but then winds shifted to northwest as the storm cleared.  Hence, reactive wind slabs should be investigated on all aspects in immediate lee of ridge crests at treeline and in the alpine.  Newly formed wind slabs will be particularly reactive should they sit atop buried surface hoar.  Buried hard wind slabs may also linger on steep alpine slopes and along immediate lee of ridge tops from last week's winds.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6tls5","text":"Cornices have grown fragile with recent cold temperatures.  Cornice failures from above may trigger an otherwise stubborn slab in addition to being a hazard outright.
Assess all slopes for wind slabs as wind shift from southerly to easterly.  Reactive wind slabs may be found in the lee of windy exposed ridge crests and on steep alpine slopes.  Cornice failures from above may trigger an otherwise stubborn wind slab in addition to being a hazard outright.
-15 cm of recent snow and variable winds have created wind slabs on lee features at upper elevations. Given the shift in wind direction from south to northwest, wind slabs should be expected in leeward features across a wide range of aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":55,"length":10,"key":0}],"data":{}},{"key":"4jo8e","text":"Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Reactive wind slabs may be found on steep alpine slopes and along ridge tops.  Cornice failures from above may trigger an otherwise stubborn wind slab in addition to being a hazard outright.
A weak layer of surface hoar buried Jan 11 buried 20-50 cm deep may be found on sheltered, open slopes near treeline in northern parts of the region. Deeper layers from early December and November can still be found in the snowpack and remain a cause for concern in thick to thin areas at upper elevations. Overall these layers are trending unreactive, however steep, rocky and shallow snowpack areas would be likely trigger areas.
Variable winds shifting to easterly may transport the 10-20 cm of recent low density snow and build fresh wind slabs or soft slabs in immediate lee of windy ridge crests in the alpine and at treeline, cross loaded features and open areas below treeline.  These slabs will be particularly reactive anywhere snow overlies buried surface hoar or crust.  Elsewhere, loose snow avalanches (sluffs) can be expected in all steep terrain.
New snow is adding up above a newly buried weak layer. Expect increasingly touchy avalanche conditions as accumulation continues and slabs begin to form above this layer, even if slabs aren't very thick at first. Areas where wind loading occurs are especially concerning.
Assess all slopes for wind slabs as southeast wind increases moderate to strong overnight Tuesday and throughout the day Wednesday.  Wind and soft slabs will be particularly touchy anywhere they overlie surface hoar that was reported to be widespread in many sheltered areas.  Reactive wind slabs may form in the lee of windy exposed ridge crests, on cross loaded features, on steep alpine slopes and in open areas below tree line.  Cornice failures from above may trigger an otherwise stubborn deeper wind slab in addition to being a hazard outright.
As flurries continue, small new wind slabs may form in leeward pockets at ridgecrests and around exposed terrain features.
As south/southeast wind picks up to moderate levels Wednesday afternoon with a few cm's of new snow, isolated wind slabs are likely to form in the immediate lee of windy exposed ridge crests, in cross-loaded features or in steep alpine areas.   Cornices continue to grow fragile with cold temperatures.
It may be possible to trigger pockets of windslab at upper elevations from sustained east to south wind.
Light wind prevailed on the weekend and is forecast for the coming days. Wind slab formation is expected to be localized to steep terrain adjacent to ridges, if anywhere.
Small wind slabs may be surprisingly reactive as they are likely sitting on weak layers.
Recent fresh snow combined with strong southerly winds has formed reactive storm slabs in many areas, especially wind loaded terrain features.
Variable winds shifting to easterly may have transported the 10-20 cm of recent low density snow and build fresh wind slabs or soft slabs in immediate lee of windy ridge crests in the alpine and at treeline, cross loaded features and open areas below treeline. These slabs will be particularly reactive anywhere snow overlies buried surface hoar or crust. Elsewhere, loose snow avalanches (sluffs) can be expected in all steep terrain.
Moderate southerly wind continues to redistribute the new snow and build fresh wind slabs in lee terrain features in the alpine and exposed treeline. Older wind slabs were formed on westerly aspects and may still be reactive. Wind slabs will be particularly reactive anywhere snow overlies buried surface hoar or crust. The surface hoar layer is likely preserved in sheltered areas at treeline elevations and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7s24","text":"In steep and wind-protected areas loose snow avalanches (sluffs) are expected.
Wind slabs trend less reactive as they facet and lose cohesion in cold temperatures. Isolated pockets may remain triggerable where they sit over a crust or surface hoar.
30-60 cm of new snow sits on a weak layer that consists of a crust, with facets and/or surface hoar on top of it. Continued moderate southeast winds are expected to form reactive slabs. This weak layer may continue to produce avalanches for longer than what is typical after a storm on the South Coast.
Assess all slopes for wind slabs as easterly wind transported loose snow on Tuesday and Wednesday.  Wind and soft slabs will be particularly touchy anywhere they overlie surface hoar that was reported to be widespread in many sheltered areas. Reactive wind slabs may have formed in the lee of windy exposed ridge crests, on cross loaded features, on steep alpine slopes and in open areas below tree line. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a24pn","text":"Cornice failures from above may trigger an otherwise stubborn deeper wind slab in addition to being a hazard outright.
Recent snow accumulations ranging from 10-25 cm have been redistributed by strong west winds into wind slabs on lee features at upper elevations. Given the recent variability in wind direction, anticipate wind slabs across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":98,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Recent snow accumulations ranging from 15-25 cm have been redistributed by strong winds into wind slabs on lee features at upper elevations. Given the variability in wind direction, anticipate wind slabs across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":93,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Recent snow accumulations ranging from 10-25 cm have been redistributed by strong winds into wind slabs that may be possible to trigger on lee features at upper elevations. Given the variability in wind direction, anticipate wind slabs across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":93,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Small wind slabs may be surprisingly reactive as they are likely sitting on weak layers.
Winds will move any snow left for transport. Hard wind slabs may be stubborn, however slabs will be dense and firm when triggered. Give cornices their space.
It's been a stormy period and Monday's warm storm has produced almost 15 cm as of 4:00 PM Monday. This makes for a little over 45 cm since Friday evening which has been accompanied by strong southwest wind. The upper snowpack will need a bit of time to adjust to this new load, but incoming cool temperatures should help with that process in the coming days.
valanches on this layer are unlikely, however they will be large and destructive if they do happen. In some areas the concern is weak snow around crusts 60 to 120 cm deep, while in others it's weak snow near the bottom of the snowpack. Human triggering of these layers are most likely in steep, rocky slopes with a shallow or thin to thick snowpack.
By Monday afternoon there will likely be 30-70 cm of recent new snow, resulting in thick and reactive storm slabs. Human triggered avalanches will be likely throughout the day. Storm slabs may propagate widely as they sit atop a recently buried weak layer.
30-40 cm of new snow sits on a weak layer that consists of a crust, with facets and/or surface hoar on top of it. Strong winds are expected to form reactive slabs. This weak layer will likely continue to produce avalanches for longer than what is typical after a storm on the South Coast.
Wind from the south/southwest continues at moderate levels at treeline and strong levels in the alpine Wednesday night and Thursday throughout the day with a few cm's of new snow. Where winds reach upward of 20 km/h and impact loose snow, fresh wind slabs are likely to form around ridge crests or in lee alpine terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6fhot","text":"Cornices might grow larger and more fragile with wind and cold temperatures.
The snowpack has seen a huge input of snow and water from successive storms. Storm layers will likely bond, but may just need a bit of time to settle and stabilize. The most reactive deposits will be where wind encourages slab cohesion.
Earlier winds were south-southwesterly and will transition to more northerly, resulting in wind slabs on a variety of aspects and an inconsistent redistribution of snow.
Wind slabs are stubborn, but if triggered will be heavy and dense. Use caution around cornices.
Fresh and reactive storm slabs are expected to be widespread and easy to trigger, especially in wind loaded areas.
ecent winds have redistributed recent snow into hard wind slabs on lee features at upper elevations that may be possible trigger. Give cornices space, large cornices may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":54,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
A weak layer of surface hoar buried Jan 11 buried 20-50 cm deep may be found on sheltered, open slopes near treeline in northern parts of the region. Deeper layers from early December and November can still be found in the snowpack and remain a cause for concern in thick to thin areas at upper elevations. Overall these layers are trending unreactive, however steep, rocky and shallow snowpack areas would be likely trigger areas.
Touchy storm slab conditions exist in all steep terrain and at all elevations.  A couple of buried surface hoar layers in the top 50 cm will be very reactive anywhere slab properties develop due to wind or warm temperatures.
Up to 40 cm of new snow is expected to accumulate before the end of the day on Monday and form touchy storm slabs over fragile surface hoar and slippery crust. This is a recipe for dangerous avalanche conditions at all elevations and on all aspects.
Up to 10 cm is forecasted around the region. Where winds reach upward of 20 km/h, fresh windslabs may form in lee features.
Fresh wind slabs may be forming at upper elevations with the arrival of some new snow and wind on Wednesday. These could become increasingly reactive throughout the day.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5u2sb","text":"
Small wind slabs may be possible to trigger in leeward terrain at upper elevations.
The wind was recently blowing from the north but is forecast to shift to the south. Wind slabs therefore may be found on all aspects in wind-exposed terrain. Assess for wind effect as you travel and use caution where you find a slabby snow surface.
The region has picked up 25 to 50 cm of recent warm wet storm snow with another 5 to 10 cm expected Tuesday.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3kmm1","text":"In wind exposed terrain at and above treeline the new snow has been shifted into wind slabs by ongoing west & southwest wind. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bl6cm","text":"At lower elevations there may be surface hoar under all of the new snow. We haven't heard much about reactivity with this surface hoar yet, but it needs to be on your radar.
ecent snow accumulations ranging from 5-15 cm have been redistributed by strong west winds into wind slabs on lee features at upper elevations and have have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":97,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Hard wind slabs are widespread but difficult to trigger. However, be aware of the potential for wide propagations if triggered.
Hard wind slabs are widespread but difficult to trigger. However, be aware of the potential for wide propagations if triggered. Cornices are also beginning to grow and should be given space.
Small wind slabs may be possible to trigger in leeward terrain at upper elevations.
p to 10 cm is forecasted around the region. Where winds reach upward of 20 km/h and impact loose snow, fresh wind slabs may form around ridges and lee terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":110,"length":10,"key":0}],"data":{}},{"key":"cr7m0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Strong winds have redistributed recent snow into wind slabs on lee features at upper elevations that may be possible trigger. Given the recent variability in wind direction, anticipate wind slabs across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":49,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Fresh snow continues to gradually accumulate and could be forming reactive slabs, especially on steep and wind loaded slopes.
New snow is not expected to bond well to the old crusty surface. Expect loose dry sluffing over the crust.
Fresh storm slabs are expected to be easy to trigger, especially in wind loaded areas.
The snowpack has seen a huge input of snow and water from successive storms. Storm layers will likely bond, but may just need a bit of time to settle and stabilize. Wind-loaded slopes may remain reactive longer.
On Tuesday strong west wind and a moderate amount of new snow formed widespread wind slabs at higher elevations. They should become less reactive in the coming days, but are still possible to trigger on steep alpine slopes and along ridgetops.
Recent snow and extreme southwesterly winds have created wind slabs in many locations, even open areas below treeline. These may still be reactive to the weight of a person or machine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"20j1b","text":"The same conditions formed fragile new cornice growth.
It may be possible to trigger pockets of windslab at upper elevations from recent east to south wind.
Up to 35 cm of storm snow has accumulated over the past few days. Storm slabs will likely be reactive on Saturday with increased snowfall amounts adding stress to the slab. A buried weak interface may exist in some locations approximately 60 cm down and could reach its threshold, initiating a deeper slab. At this point, this interface seems spotty through the region and hasn't been as reactive as in the Lizard-Flathead region. However, something to keep this on your radar. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4ivv0","text":"Loose-dry avalanches may occur from steep terrain features.
Strong winds have redistributed recent snow into wind slabs on lee features at upper elevations that may be possible trigger. Given the recent variability in wind direction, anticipate wind slabs across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":49,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Strong winds have redistributed recent snow into wind slabs on lee features at upper elevations that may be possible trigger. Given the recent variability in wind direction, anticipate wind slabs across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":49,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Reactive wind slabs may be found on steep alpine slopes and along ridgetops.
Previous strong wind has likely redistributed small amounts of recent snow into wind slabs in lee terrain features at upper elevations. They could remain reactive where they sit over a rain crust or large surface hoar crystals.
Previously formed wind slabs may remain triggerable by human traffic in isolated terrain features. Cornice falls could also act as potential triggers for avalanches on wind loaded slopes below.
Previously formed wind slabs may remain triggerable by human traffic in isolated terrain features. Cornice falls could also act as potential triggers for avalanches on wind loaded slopes below.
trong winds have redistributed recent snow into wind slabs on lee features at upper elevations that may be possible trigger. Given the recent variability in wind direction, anticipate wind slabs across a wide range of aspects. Ongoing wind and snow over the past week have contributed to cornice growth. Cornice falls may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":49,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Recent snow and extreme southwesterly winds have created touchy wind slabs in many locations, even open areas below treeline.
40-60 cm recent snow and strong southwest, shifting to northerly winds have created widespread and reactive wind slabs on a variety of aspects.
Cornices may weaken with prolonged exposure to direct sun. Minimize exposure to overhead hazard when solar radiation is strong. A few recent cornice falls have triggered avalanches on the slopes below.
Cornices may weaken with prolonged exposure to direct sun. Minimize exposure to overhead hazard when solar radiation is strong. A few recent cornice falls have triggered avalanches on the slopes below.
Wind slabs may be triggerable where they sit over a rain crust or large surface hoar crystals.
Strong winds have redistributed recent snow into hard wind slabs on lee features at upper elevations that may be possible trigger. Cornices are adjusting to a rapid load and may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":54,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
trong winds have redistributed recent snow into hard wind slabs on lee features at upper elevations that may be possible trigger. Cornices are adjusting to the recent load and may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":54,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
A switch in wind to sustained northeast wind is forecast for Tuesday and Wednesday. This reverse-loading pattern could form slabs on atypical slopes. Air temperature is cold so the slabs may be sluggish, but use particular caution as they will be most reactive during their formation.
Strong winds have redistributed recent snow into hard wind slabs on lee features at upper elevations that may be possible trigger. Cornices are adjusting to a rapid load and may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":54,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Hard wind slabs are widespread but difficult to trigger. However, be aware of the potential for wide propagations if triggered.
30-60 cm of recent fresh snow sits on a weak layer that consists of a crust, with facets and/or surface hoar on top of it. Continued moderate southeast winds are expected to form reactive slabs. This weak layer may continue to produce avalanches for longer than what is typical after a storm on the South Coast.
Recent strong winds have redistributed the new snow into wind slabs on lee features at upper elevations that are likely to be human-triggered. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1q1rq","text":"
Up to 25 cm of new snow on Saturday will add to 30-60 cm of recent snow already sitting on a widespread weak layer that consists of a crust, with facets and/or surface hoar on top of it. Along with storm slabs formed of new snow, this deeper layer is expected to produce avalanches for longer than what is typical after a storm on the South Coast.
25 cm of fresh snow has formed storm slabs that will likely be reactive on steep slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5u2sb","text":"
Wind slabs are stubborn, but if triggered will be heavy and dense. Use caution around cornices.
As winds increase to moderate Wednesday afternoon from the south/southwest, watch for wind transport and be on the look out for fresh wind slabs in the immediate lee of windy ridge crests, along cross-loaded slopes or in steep alpine terrain.  Cornices continue to weaken.
ecent winds have redistributed recent snow into hard wind slabs on lee features at upper elevations that may be possible trigger. Give cornices space, large cornices may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":54,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
5-35 cm of recent snow has formed reactive storm slabs sitting on a weak layer of surface hoar. These slabs may be especially reactive in wind affected terrain.
Recent winds have redistributed recent snow into hard wind slabs on lee features at upper elevations that may be possible trigger. Give cornices space, large cornices may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":54,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Reactive wind slabs may be found on steep alpine slopes and along ridge tops.  Cornice failures from above may trigger an otherwise stubborn wind slab in addition to being a hazard outright.
40-60 cm of storm snow and strong southwest, shifting to northerly winds have created widespread wind slabs on a variety of aspects. Expect these to remain reactive to the weight of a person or machine over the near term
Recent storm snow is strengthening, but reactive wind slabs could still be found on steep alpine slopes and along ridgetops.
Cornices may weaken with prolonged exposure to direct sun. Minimize exposure to overhead hazard when solar radiation is strong. A few recent cornice falls have triggered wind slabs on the slopes below.
Although unlikely to trigger, hard wind slabs in the alpine have the potential to propagate widely.
Strong winds have redistributed recent snow into hard wind slabs on lee features at upper elevations that may be possible trigger. Cornices are adjusting to a rapid load and may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":54,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Recent snow and extreme southwesterly winds have created wind slabs in many locations, even open areas below treeline.  These will likely continue to be reactive to the weight of a person or machine over the near term.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"20j1b","text":"The same conditions have formed fragile new cornice growth.
Wind slabs may be triggerable where they sit over a rain crust or large surface hoar crystals.
Cornices may weaken with prolonged exposure to direct sun. Minimize exposure to overhead hazard when solar radiation is strong. A few recent cornice falls have triggered wind slabs on the slopes below.
Recent winds have redistributed recent snow into hard wind slabs on lee features at upper elevations that may be possible trigger. Give cornices space, large cornices may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":54,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Recent winds have redistributed recent snow into hard wind slabs on lee features at upper elevations that may be possible trigger. Cornices are adjusting to a rapid load and may trigger avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":54,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysav
Forecast 5-15cm of snow with moderate to strong southwest winds may form reactive wind slabs in immediate lee of ridge crests at treeline and in the alpine.  Newly formed wind slabs will be particularly reactive where they sit atop buried surface hoar.  Buried hard wind slabs may also linger on steep alpine slopes and along immediate lee of ridge tops from last week's winds.
Cornices are growing fragile with continued cold temperatures.   Cornices often fail along ridge crests surprisingly far back from the edge.  Cornice failures are a significant hazard on their own - but can also trigger stubborn wind slab avalanches when they fail.
Although unlikely to trigger, hard wind slabs in the alpine have the potential to propagate widely.  Additionally, cornices are growing fragile with continued cold temperatures.  Cornice failures are a significant hazard on their own - but can also trigger stubborn wind slab avalanches when they fail.
20-30 cm of recent storm snow has formed reactive storm slabs in the alpine and at treeline elevations. With rising temperatures throughout the day the new snow slab might become stiffer and a failure in the weak layer underneath might propagate wider than expected resulting in larger avalanches. The storm slabs are particularly reactive where they overlie surface hoar in sheltered areas at and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d87kn","text":"The new snow is redistributed by moderate to strong southwest wind and forms fresh wind slabs on lee terrain features at higher elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"arp8p","text":"Cornices might grow larger and become more fragile.
Wind slabs are stubborn, but if triggered will be heavy and dense. Use caution around cornices.
Wind slabs trend less reactive as they facet and lose cohesion in the cold temperatures. Isolated pockets may remain triggerable where they sit over a rain crust or large surface hoar crystals.
Wind slabs trend less reactive as they facet and lose cohesion in the cold temperatures. Isolated pockets may remain triggerable where they sit over a rain crust or large surface hoar crystals.
0-20 cm of new snow is expected to accumulate in the region by the end of the day on Thursday. In most areas, new surface instabilities will likely be limited to leeward pockets loaded by wind. In higher snowfall areas to the south and west of the region, more widespread storm slabs may begin to form over a weak layer of surface hoar that is widespread in sheltered areas of the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr7m0","text":"
Wind from the southwest continues at moderate levels at treeline and strong levels in the alpine Wednesday night and decreases Thursday morning with a few cm's of new snow. Where winds reach upward of 20 km/h and impact loose snow, fresh wind slabs are likely to form around ridge crests or in lee alpine terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"33a4a","text":"Cornices might grow larger and more fragile with the wind.
A critical load of new snow has accumulated above a recently buried weak layer in many parts of the region. Avalanche conditions are expected to become increasingly touchy as the new snow settles and forms cohesive slabs over this layer. Areas where wind loading has occurred are especially concerning.
5-45 cm of recent snow will form reactive storm slabs anywhere dense snow forms slab qualities over one of the recent surface hoar layers. Slabs will be particularly touchy in the lee of exposed ridge crests, wind affected treeline or open alpine slopes.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7b3tm","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ftjv0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr7m0","text":"
Moderate southerly wind will redistribute loose snow overnight and form fresh wind slabs in lee terrain features on northerly and easterly aspects. Older wind slabs were formed on westerly aspects on previous days and may still be reactive and more tricky to recognize. Wind and soft slabs will be particularly reactive anywhere they overlie surface hoar that was reported to be widespread in many sheltered areas. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a24pn","text":"Loose snow avalanches (sluffs) are likely in steep and wind-protected areas and they might run longer and grow larger than expected.
Another 5-20 cm of snow is forecast by Sunday afternoon adding to the 2-25 cm that already overlies a known weak surface hoar layer.  There may be a second surface hoar layer and temperature / density changes within this recent snow that serve as failure planes.  Anticipate increased reactivity anywhere slab properties develop in this recent 5 to 45 cm of snow due to wind loading or warm temperatures as freezing levels rise.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1n9jn","text":"
Moderate to strong southwest wind will continue to redistribute the new snow and build wind slabs in lee terrain features in the alpine and at exposed treeline (see this MIN report from Saturday). These slabs will be particularly reactive where they overlie surface hoar. It is uncertain how well the transported snow will bond with old surfaces, for example hard wind affected layers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":170,"length":10,"key":0}],"data":{}},{"key":"c7g2m","text":"Cornices might grow larger and become more fragile.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://w
By Monday afternoon up to 35 cm of recent snow may sit on top of a known weak layer  of surface hoar and crust.  Avalanches will be particularly touch anywhere moderate to strong south winds have transported snow into soft slabs  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5gtuf","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8vod5","text":"
By Sunday afternoon there will likely be 40-60 cm of fresh snow from the weekend's storm, resulting in thick and touchy storm slabs. Expect natural avalanches in steep terrain during periods of heavy loading, while human triggered avalanches will be likely throughout the day.
Recent flurries likely resulted in small new wind slabs forming in leeward pockets at ridgecrests and around exposed terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8vod5","text":"
5-30 cm of new snow is expected to accumulate in the region by the end of the day on Thursday, making for a tricky regional variation in avalanche problems. Expect touchy surface instabilities limited to wind loaded pockets in lower snowfall areas. In higher snowfall areas to the west of the region, more widespread storm slabs are likely forming over a weak layer of surface hoar that is widespread in sheltered areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr7m0","text":"
15-30 cm of new snow will likely form reactive storm slabs at higher elevations and on wind loaded slopes. Loose dry avalanches might run longer than expected.
Moderate wind overnight and strong southwest wind throughout the day on Friday will redistribute loose snow and form touchy fresh wind slabs in lee terrain features on northerly and easterly aspects. Older wind slabs were formed on westerly aspects on Wednesday and may still be reactive. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"501uv","text":"Wind slabs will be particularly reactive anywhere snow overlies buried surface hoar or crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7s24","text":"In steep and wind-protected areas loose snow avalanches (sluffs) can be expected.
Moderate southwest wind on Friday will redistribute loose snow where available and form fresh wind slabs in lee terrain features on northerly and easterly aspects. Older wind slabs were formed on westerly aspects on Wednesday and may still be reactive.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5c95c","text":"Wind and soft slabs will be particularly touchy anywhere they overlie surface hoar that was reported to be widespread in many sheltered areas. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a24pn","text":"Cornice failures from above may trigger an otherwise stubborn deeper wind slab in addition to being a hazard outright.
Moderate southwest wind may redistribute loose snow and build fresh wind slabs in lee terrain features in the alpine on northerly and easterly aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b4s6k","text":"Cornices might grow larger and more fragile.
25-50 cm of recent snow has likely formed storm slabs in many areas. These will probably be the most reactive in wind loaded areas, and in sheltered terrain where they may sit on top of a weak layer of surface hoar.
If forecast snowfall (an additional 5-15 cm by Sunday afternoon) and wind values (moderate to strong south) are experienced, anticipate touchy wind slab formation.  This new snow adds to the trace to 15 cm reported on Saturday.  Wind slabs will be particularly touchy anywhere they sit on top of a slippery surface hoar layer.  Reactive wind slabs will likely form in open alpine terrain, leeward pockets at ridgecrests, around exposed terrain features and in open areas below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8vod5","text":"
20-40 cm of new storm snow has slowly accumulated over the past two days. Changing wind directions may deposit deeper and stiffer slabs on multiple aspects. I suspect that anywhere the new snow feels stiff and more cohesive the slab may be more reactive, especially where it sits above a buried weak layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ac2cc","text":"Loose-dry avalanches are likely from steeper slopes where there is little cohesion in the recent storm snow.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1rq0c","text":"Large, looming cornices exist along ridgelines.
Moderate southerly wind will redistribute the new snow and form fresh wind slabs in lee terrain in the alpine and at exposed treeline. Older wind slabs were formed on westerly aspects on previous days and may still be reactive and harder to recognize. Wind slabs will be particularly reactive anywhere they overlie surface hoar that was reported to be widespread in many sheltered areas. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a24pn","text":"Loose snow avalanches (sluffs) are likely in steep and wind-protected areas. They might run longer and grow larger than expected.
25-60 cm of snow by Sunday afternoon will sit on top of a known weak layer of surface hoar, facets and crusts.  Within this new snow lies a second smaller surface hoar in addition to temperature and density changes that all may serve as failure planes.  Avalanche conditions are expected to become increasingly touchy anywhere recent snow forms cohesive slabs due to wind loading or warming temperatures below treeline.
A cohesive slab 50-80 cm thick now sits above a buried weak layer of surface hoar, surface facets and crust. These slabs have been very reactive to human triggers showing wide propagations in moderate to low angle terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2icl6","text":"Persistent slabs have been catching people by surprise, so pay attention to signs of instability and stay clear of terrain traps like creeks, cliffs, and depressions below you.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"agiru","text":"
Light to moderate wind speed is forecast from the south to west. As the wind picks up, it has the potential of moving the soft snow and forming new wind slabs in lee terrain features. These wind slabs may be sitting on top of weak surface hoar crystals, which would make them more easy to trigger. Assess for wind effect as you travel and use caution where you find a slabby snow surface.
As wind picks up over the weekend there is potential for new wind slabs in lee terrain features. These wind slabs may be sitting on top of weak surface hoar crystals, which would make them more easy to trigger.
Storm slabs are likely most prevalent in the south and west of the region near the divide, where the most snow has accumulated. Use added caution anywhere you find more than 20 cm of soft snow. Otherwise, wind slab avalanches are expected to be widespread and across the entirety of the region from strong southwest wind pushing the 10 to 50 cm of snow into lee terrain features. Use particular caution on sun-exposed slopes as well as in lee terrain features near ridges. Conservative terrain travel is recommended until the snow has some time to bond to the snowpack.
Shifting wind earlier in the week has left widespread wind slabs in the alpine and open treeline terrain. These slabs are becoming less likely to trigger, but you should still travel with caution around steep terrain with slabby surfaces.
By Sunday afternoon there will likely be 25-40 cm of fresh snow, resulting in thick and touchy storm slabs. Expect natural avalanches in steep and wind-affected terrain during periods of heavy loading, while human triggered avalanches will be likely throughout the day. Storm slabs may propagate widely as they sit atop a recently buried weak layer.
orecast 5-15 cm of snow by Sunday afternoon will add to the 15-30 cm of recent snow for a total of 20-45 cm.  Warm temperatures on Sunday along with winds and snow will promote slab development.   Looks for signs of instability as you travel and be suspicious of higher snowfall zones where over 30 cm of recent snow overlies a surface hoar / sun crust weak layer.    In lower snowfall areas, anticipate  touchy surface instabilities limited to wind loaded pockets where wind has transported snow into fat pockets of soft slabs.  In steep terrain everywhere, loose snow avalanches should be expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":472,"length":20,"key":0}],"data":{}},{"key":"cr7m0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK"
Moderate southerly wind continues to redistribute the new snow and build fresh wind slabs in lee terrain features in the alpine and exposed treeline. Older wind slabs were formed on westerly aspects and may still be reactive. Wind slabs will be particularly reactive anywhere snow overlies buried surface hoar or crust. The surface hoar layer is likely preserved in sheltered areas at and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7s24","text":"In steep and wind-protected areas loose dry snow avalanches (sluffs) are expected.
30-60 cm of recent fresh snow sits on a widespread weak layer that consists of a crust, with facets and/or surface hoar on top of it. This weak layer may continue to produce avalanches for longer than what is typical after a storm on the South Coast.
The storm crossing the region will build thick and reactive storm slabs. In the north of the region these slabs will build overnight and be reactive first thing Sunday morning, while in the south of the region they will be building throughout the day.
25-50 cm of recent snow has formed reactive storm slabs in many areas and a bit more new snow may add to their sensitivity on Saturday. Slabs will probably be the most reactive in wind loaded areas, but sheltered terrain is equally concerning - here, slabs may be teetering on a fragile layer of surface hoar.
Forecast flurries and elevated winds will add to pockets of wind slab at upper elevations. Be ready to manage a more widespread storm slab problem at all elevations in the south of the region if snowfall exceeds forecast amounts.
It snowed 10 cm on Friday and with another 10 cm forecast for Friday night the recent snow might build reactive slabs in areas where it overlies surface hoar. This surface hoar layer is likely preserved in sheltered areas at treeline elevations and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eabnj","text":"Strong southwest wind will redistribute the storm snow and form touchy fresh wind slabs in lee terrain features on northerly and easterly aspects in the alpine and at treeline. Older wind slabs were formed on westerly aspects and may still be reactive. Wind slabs will be particularly reactive anywhere snow overlies buried surface hoar or crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7s24","text":"In steep and wind-protected areas loose snow avalanches (sluffs) are expected.
20-35 cm of recent storm snow has formed reactive storm slabs in the alpine and at treeline elevations. With relatively warm temperatures the new snow might become more bonded and become reactive particularly where it overlies surface hoar below treeline and in sheltered areas at treeline elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d87kn","text":"The new snow might be redistributed throughout the day by moderate southwest wind and form fresh wind slabs on lee terrain features at higher elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2a90a","text":"Loose dry avalanches might run longer than expected.
Moderate to strong southerly wind will redistribute loose snow and form fresh wind slabs in lee terrain features on northerly and easterly aspects. Older wind slabs were formed on westerly aspects on Wednesday and may still be reactive. Wind and soft slabs will be particularly touchy anywhere they overlie surface hoar that was reported to be widespread in many sheltered areas. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a24pn","text":"Loose snow avalanches (sluffs) are likely in steep and wind-protected areas and they might run longer and grow larger than expected.
Moderate to strong southwest wind will redistribute loose snow and build fresh wind slabs in lee terrain features in the alpine and at exposed treeline. These slabs will be particularly reactive where they overlie surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b4s6k","text":"Cornices might grow larger and more fragile.
5-30 cm of new snow has accumulated in the region by Friday, making for a tricky regional variation in avalanche problems. In higher snowfall areas to the west of the region, more widespread storm slabs are likely forming over a weak layer of surface hoar that is widespread in sheltered areas.  Expect touchy surface instabilities limited to wind loaded pockets in lower snowfall areas. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr7m0","text":"
As wind increases to moderate overnight Friday recent low density snow will be available for transport.  Activity may increase throughout the day on Saturday as wind increases to strong from the south.  Reactive wind slabs will likely form in open alpine terrain, leeward pockets at ridgecrests, around exposed terrain features and in open areas below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8vod5","text":"
A critical load of new snow(15-45 cm) has accumulated above a recently buried surface hoar weak layer in many parts of the region. Avalanche conditions are expected to become increasingly touchy as the new snow settles and forms cohesive slabs over this layer. Areas where wind loading has occurred are especially concerning.
Anticipate wind slab formation throughout the day on Saturday anywhere winds increase to moderate levels or snow transport is observed.   Fresh wind slabs will be most likely to form in exposed alpine, in leeward pockets at ridge crests and around exposed terrain features. Wind was light/moderate southeast Thursday night and then light/moderate southwest for Friday and is forecast to increase to moderate from the south by Saturday afternoon.
Shifting wind earlier in the week has left widespread wind slabs in the alpine and open treeline terrain. These slabs are becoming less likely to trigger, but you should still travel with caution around steep terrain with slabby surfaces.
Storm slabs will be building throughout the day on Sunday, becoming increasingly reactive as more snow accumulates. This adds to slabs from a midweek storm that have been teetering on a fragile layer of surface hoar. Natural avalanches will be likely at higher elevations on wind loaded slopes, while human triggering is a serious concern at all elevations.
Saturday's storm will bring together the ingredients for new slab problems to form and become increasingly reactive over the day. Along with touchy wind slabs forming in typical leeward pockets, a critical load may form over a recently buried weak layer, affecting more sheltered locations.
Storm snow amounts of 60 cm (or deeper) by Monday evening will be common in the region. Given moderate southerly winds, expect fresh windslabs. All this snow will be \"upside down\" with the warm (cohesive, slabby) snow on top. I expect Storm Slab avalanches to become more common, deeper, wider, and run further.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2tl7s","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ckn0i","text":"There may be a second surface hoar layer and temperature / density changes within this recent snow that serve as failure planes.  Anticipate increased reactivity anywhere slab properties develop in this recent 5 to 45 cm of snow due to wind loading or warm temperatures as freezing levels rise.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1n9jn","text":"
Storm slabs will likely continue to be reactive on Tuesday, especially in wind loaded areas.
A storm slab problem exists in the south of the region, where recent snowfall has been significant (40-60 cm). Cooling temperatures will help to lock up storm slabs but some residual reactivity may still be observed in wind loaded features. Loose dry sluffing may also be observed in the new snow from overnight.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":54,"style":"BOLD"},{"offset":109,"length":2,"style":"BOLD"},{"offset":35,"length":5,"style":"UN
Moderate to strong southwest wind will continue to redistribute the new snow and build wind slabs in lee terrain features in the alpine and at exposed treeline (see this MIN report from Saturday). These slabs will be particularly reactive where they overlie surface hoar. It is uncertain how well the transported snow will bond with other old surfaces, for example hard wind affected layers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":170,"length":10,"key":0}],"data":{}},{"key":"c7g2m","text":"Cornices might grow larger and become more fragile.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://w
10-25 cm of new, low-density storm snow has slowly accumulated over the past two days. Changing wind directions may deposit deeper and stiffer slabs on multiple aspects. I suspect that anywhere the new snow feels stiff and more cohesive that the slab may be more reactive, especially where it sits above a buried weak layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"628t","text":"Loose-dry avalanches may be seen from steeper slopes where there is little cohesion in the recent storm snow.
10-25 cm of new, low-density storm snow has slowly accumulated over the past few days. Changing wind directions may deposit deeper and stiffer slabs on multiple aspects. Anywhere the new snow feels stiff and more cohesive may be more reactive, especially where it sits above a buried weak layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"628t","text":"Loose-dry avalanches may be seen from steeper slopes where there is little cohesion in the recent storm snow.
Recent variable wind direction will mean that wind slabs may be found on all aspects. A weak interface may exist in some locations approximately 60 cm down and could reach its threshold with wind loading, initiating a deeper slab. At this point, this interface seems spotty through the region and hasn't been as reactive as in the Lizard-Flathead region. However, it is something to keep on your radar.
20-30 cm of recent storm snow has formed reactive storm slabs at all elevations. The new snow slab becomes stiffer with the settlement of the snow and rising temperatures. A failure in the weak layer underneath the slab might propagate wider than expected resulting in larger avalanches. The storm slabs are particularly reactive where they overlie surface hoar in sheltered areas at and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d87kn","text":"The new snow is redistributed by moderate to strong southwest wind and forms fresh wind slabs on lee terrain features at higher elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"arp8p","text":"Cornices are growing larger and becoming more fragile.
Storm slabs will be building throughout the day on Monday, becoming increasingly reactive as more snow accumulates. This adds to slabs from last week's storm that have been teetering on a fragile layer of surface hoar. Natural avalanches will be likely at higher elevations on wind loaded slopes, while human triggering is a serious concern at all elevations.
Fresh and reactive storm slabs are expected to be widespread and easy to trigger.
Strong southwest wind and new snow forecast for Tuesday will build new and reactive storm slabs at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fr2a0","text":"Cornices are large and fragile. Cornice failures were reported on Monday, likely due to warming. They deserve respect and a wide berth from above and below.
Moderate southerly wind will redistribute the recent snow and form fresh wind slabs in lee terrain in the alpine and at exposed treeline. Wind slabs will be particularly reactive anywhere they overlie surface hoar that was reported to be widespread in many sheltered areas. Loose dry avalanches (sluffs) are likely in steep and wind-protected areas. They might run longer and grow larger than expected.
Moderate southerly wind continues to redistribute the new snow and build fresh wind slabs in lee terrain features in the alpine and exposed treeline. Older wind slabs were formed on westerly aspects and may still be reactive. Wind slabs will be particularly reactive anywhere snow overlies buried surface hoar or crust. The surface hoar layer is likely preserved in sheltered areas at and below treeline. In steep and wind-protected areas loose dry snow avalanches (sluffs) are expected.
Moderate to strong southwest wind will continue to redistribute the new snow and build wind slabs in lee terrain features in the alpine and at exposed treeline. These slabs will be particularly reactive where they overlie surface hoar. It is uncertain how well the transported snow will bond with other old surfaces, for example, hard wind affected layers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c7g2m","text":"Cornices might grow larger and become more fragile.
Several days of intense snowfall has brought up to 100 cm of new snow to the region, resulting in reactive storm slabs. Human triggered avalanches will be likely throughout the day. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2q9qg","text":"
Touchy storm slabs are sitting on a very weak layer of surface hoar which is very likely to be reactive to human triggers, even in low angle terrain. Avalanches may be larger than expected due to the presence of this weak layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5gtuf","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8vod5","text":"
Touchy storm slabs are sitting on a very weak layer of surface hoar which is very likely to be reactive to human triggers, even in low angle terrain. Avalanches may be larger than expected due to the presence of this weak layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1n9jn","text":"
Touchy storm slabs are sitting on a very weak layer of surface hoar which is very likely to be reactive to human triggers, even in low angle terrain. Avalanches may be larger than expected due to the presence of this weak layer.
20-40 cm of new storm snow has slowly accumulated over the past few days. Changing wind directions may deposit deeper and stiffer slabs on multiple aspects. I suspect that anywhere the new snow feels stiff and more cohesive the slab may be more reactive, especially where it sits above a buried weak layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ac2cc","text":"
Ongoing ridgetop winds have redistributed recent low density snow into wind slabs on lee features at upper elevations that remain reactive to human triggering. Strong sun on Tuesday may weaken cornices, which can act as triggers on slopes below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1q1rq","text":"
Recent wind from southwest to northwest has blown recent snow into wind slabs in lee features at upper elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5fpmd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"67gh6","text":"In wind sheltered areas, low density storm snow may be prone to sluffing especially with skier traffic.
Recent wind from southwest to northwest has blown recent snow into wind slabs in lee features at upper elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5fpmd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"67gh6","text":"In wind sheltered areas, low density storm snow may be prone to sluffing especially with skier traffic.
Wind slabs may remain triggerable by humans. Be aware of the potential for wind loading in atypical terrain features on southerly aspects due to recent northerly winds.
Variable wind has formed reactive slabs on multiple aspects, and wind will continue to impact loose snow and reverse load features. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or punchy. Be mindful of loose-snow or sluff in steeper features.
ngoing ridgetop winds have redistributed the low density snow into wind slabs on lee features at upper elevations that may be possible to human trigger. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8fmf6","text":"
revious strong winds have redistributed recent low density snow into wind slabs on lee features at upper elevations that may be possible to human trigger.
Wind slabs may exist in lee features on a variety of aspects due to recently varying wind direction. Although they tend to facet and lose cohesion in cold temperatures, they may remain sensitive to human triggers Sunday.
Solar triggered loose snow avalanches are possible out of steep sunny slopes in the afternoon.
Recent northerly wind has created thin wind slabs in exposed lee terrain. Lingering widespread wind slabs from last week are still present but likely unreactive.
Wind slabs may exist in atypical terrain features due to recent northerly wind direction. Although they tend to facet and lose cohesion in cold temperatures, wind slabs may remain sensitive to human triggers in steep convexities and near ridge.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3ms0l","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4aijv","text":"Faceting and loss of cohesion in cornices can make them prone to fail, as can strong solar exposure. It is generally good practice to give cornices a wide berth from above and below.
Wind slabs may remain triggerable by humans. Be aware of the potential for wind loading in atypical terrain features due to recent variable wind directions.
Moderate southerly wind will redistribute the recent snow and form fresh wind slabs in lee terrain in the alpine and at exposed treeline. Wind slabs will particularly be reactive anywhere they overlie surface hoar that was reported to be widespread in many sheltered areas. Loose-dry avalanches (sluffs) are likely in steep and wind-protected areas.
As wind picks up over the weekend there is potential for new wind slabs in lee terrain features. These wind slabs may be sitting on top of weak surface hoar crystals, which would make them more easy to trigger.
Storm slabs will likely continue to be reactive, especially in wind loaded areas.
Strong southwest wind and new snow will build reactive storm slabs at all elevations. Cornices are large and fragile and don't respond well to rapid change- like new load from snow or rain, rapid warming or rapid cooling. They deserve respect and a wide berth from above and below.
Moderate southwesterly wind continues to redistribute the new snow and build fresh wind slabs in lee terrain features in the alpine and exposed treeline. Wind slabs will be particularly reactive anywhere snow overlies buried surface hoar or crust. The surface hoar layer is likely preserved in sheltered areas at and below treeline. In steep and wind-protected areas loose dry snow avalanches (sluffs) are expected.
0-50 cm of recent snow has formed reactive storm slabs sitting on a weak layer of surface hoar. These slabs may be especially reactive in wind affected terrain.
Storm slabs may be surprisingly large and easy to trigger due to the presence of buried weak layers of surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":103,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type
Storm slabs may be surprisingly large and easy to trigger due to the presence of buried weak layers of surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":103,"length":13,"key":0}],"data":{}},{"key":"c1d1d","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9q9kb","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1n9jn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
Storm slabs may be surprisingly large and easy to trigger due to the presence of buried weak layers of surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":103,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type
Recent northerly wind has created new thin new wind slabs in exposed lee terrain. Lingering widespread wind slabs from last week are still present but likely unreactive.
Recent northerly wind has created new thin new wind slabs in exposed lee terrain. Lingering widespread wind slabs from last week are still present but likely unreactive.
We're expecting some strong southeast wind this weekend which could form fresh slabs in exposed terrain (if there's any snow available for transport).  With the cold temperatures we haven't had any recent observations, so you need to watch for, and avoid, fresh winds slabs that may form this weekend.
Human triggering of this layer is likely. Small terrain features are producing small avalanche results, bigger features could produce larger more dangerous avalanches. 40-65 cm snow sits above a buried weak layer of surface hoar, facets, and a crust (depending on elevation and aspect). The surface hoar interface is the biggest repeat offender, and things have been most reactive on northerly and easterly aspects at treeline, but don't let your guard down elsewhere. These kinds of avalanches can happen in surprisingly mellow terrain and be triggered from a distance away.
10-25 cm of new, low-density storm snow has slowly accumulated over the past few days. Changing wind directions may deposit deeper and stiffer slabs on multiple aspects. Anywhere the new snow feels stiff and more cohesive may be more reactive, especially where it sits above a buried weak layer. Be mindful of loose-snow or sluff in steeper features.
Ongoing ridgetop winds have redistributed recent low density snow into wind slabs on lee features at upper elevations that remain reactive to human triggering. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1q1rq","text":"
Recent variable wind directions developed wind slabs on a variety of aspects. A weak interface may exist in some locations approximately 60 cm down and could reach its threshold with wind loading, initiating a deeper slab. At this point, this interface seems spotty through the region and hasn't been as reactive as in the Lizard-Flathead region. However, it is something to keep on your radar.
20-40 cm of new storm snow has slowly accumulated over the past few days. Changing wind directions may deposit deeper and stiffer slabs on multiple aspects. I suspect that anywhere the new snow feels stiff and more cohesive the slab may be more reactive, especially where it sits above a buried weak layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ac2cc","text":"
A storm slab problem exists in the south of the region, where recent snowfall has been significant (40-70 cm). Cooling temperatures will help to lock up storm slabs but some residual reactivity may still be observed in wind loaded features. Loose dry sluffing may also be observed in the new snow from overnight.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":54,"style":"BOLD"},{"offset":109,"length":2,"style":"BOLD"},{"offset":35,"length":5,"style":"UN
Human triggering of this layer is likely on the BC side of the region. Small terrain features are producing small avalanche results, bigger features could produce larger more dangerous avalanches. 40-65 cm snow sits above a buried weak layer of surface hoar, facets, and a crust (depending on elevation and aspect). The surface hoar interface is the biggest repeat offender, and things have been most reactive on northerly and easterly aspects at treeline, but don't let your guard down elsewhere. These kinds of avalanches can happen in surprisingly mellow terrain and be triggered from a distance away.
50-80 cm sits above a buried weak layer of surface hoar, facets, and a crust. These slabs have been very reactive to human triggers, showing wide propagations in moderate to low angle terrain. These avalanches have been catching people by surprise.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2icl6","text":"
Variable wind has formed reactive slabs on multiple aspects, and outflow winds continue to impact any remaining loose snow and reverse and cross load features. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or punchy. Note that in some places avalanche hazard may be elevated where winds have penetrated into unexpected places even at lower elevations.
An uptick and shift to easterly winds on Thursday formed new wind slabs at upper elevations that will likely remain sensitive to human triggers. Given the recent variability in wind direction and unusual loading pattern, treat all aspects as suspect. Cornices may be reaching their breaking point.
Outflow winds have been redistributing loose snow, building reactive slabs and reverse loading features. Avalanches will be most likely in wind loaded areas where the snow feels stiff or punchy. Note that in some places avalanche hazard may be elevated where winds have penetrated into unexpected places even at lower elevations.
Moderate to strong southwest wind will continue to redistribute the new snow and build wind slabs in lee terrain features in the alpine and at exposed treeline. It is uncertain how well the transported snow will bond with other old surfaces, for example, hard wind affected layers and pockets of surface hoar or surface facets. If the bond is poor, the wind slabs will be more reactive. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2qjm3","text":"Looming cornices may be large and fragile. With respect, give them a wide berth from above and below.
Storm slabs will likely continue to be reactive, especially in wind loaded areas and in places that see more than 15 cm of new snow over the day Saturday.
With a bit of new snow forecast for the south and central parts of the region combined with moderate winds there is potential for new wind slabs in lee terrain features. These wind slabs may be sitting on top of weak surface hoar crystals, which would make them more easy to trigger.
Storm slabs will likely continue to be reactive, especially in wind loaded areas and in places that see more than 15 cm of new snow overnight.
Storm slabs will likely continue to be reactive, especially in wind loaded areas, and in any places that see more than 15 cm of new snow on Thursday.
50-80 cm of snow sits on a persistent weak layer that was buried near the end of January. This layer consists of a melt-freeze crust in some areas, surface hoar in sheltered areas, and facets in some areas. This layer has been the most reactive at treeline and below treeline, where it exists as surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":207,"length":102,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"95jml","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2fehb","text":"Another layer of surface hoar that was buried in mid-January may still be possible to trigger, and it is now down about 80-100 cm.
Fresh storm slabs are may be easy to trigger, especially in wind loaded areas at higher elevations. Be aware of the potential for wind loading on southerly aspects with strong northerly winds in the forecast.
Recent fresh snow combined with strong winds has formed reactive storm slabs in many areas, especially wind loaded terrain features. Be aware of the possibility for wind loading on southerly aspects with strong notherly winds in the forecast.
A cohesive slab 30-60 cm thick now sits above a buried weak layer of surface hoar, surface facets and crust. These slabs have been very reactive to human triggers showing wide propagations in moderate to low angle terrain. They have been catching people by surprise, so pay attention to signs of instability and stay clear of terrain traps like creeks, cliffs, and depressions below you.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"agiru","text":"
Moderate southwesterly wind continues to redistribute the new snow and build fresh wind slabs in lee terrain features in the alpine and exposed treeline. Wind slabs will be particularly reactive anywhere snow overlies buried surface hoar or crust. The surface hoar layer is likely preserved in sheltered areas at and below treeline. In steep and wind-protected areas loose dry snow avalanches (sluffs) are expected. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1rq0c","text":"Large, looming cornices exist along ridgelines. Give them a wide berth from above and below.
Up to 30 cm of new snow fell by Wednesday morning. Storm slabs may continue to be reactive on Thursday, especially in areas that received higher snowfall amounts. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4ivv0","text":"Loose dry avalanches may occur from steep terrain features.
30-60 cm sits above a buried weak interface that consists of surface hoar, facets, and/ or a crust. Forecast snow and strong wind will likely add cohesion and load to these weak layers resulting in a reactive persistent slab problem.
0-60 cm of recent snow has formed reactive storm slabs sitting on a weak layer of surface hoar. These slabs may be especially reactive in wind affected terrain.
Storm slabs may be surprisingly large and easy to trigger due to the presence of buried weak layers of surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":103,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type
Storm slabs may be surprisingly large and easy to trigger due to the presence of buried weak layers of surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":103,"length":13,"key":0}],"data":{}},{"key":"c1d1d","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9q9kb","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1n9jn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
Storm slabs may be surprisingly large and easy to trigger due to the presence of buried weak layers of surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":103,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type
A surface hoar layer buried near the end of January is now down 40 to 80 cm and has recently been quite sensitive to triggering. This layer has been the most sensitive right at treeline, but it is thought to extend into the alpine too.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":177,"length":8,"key":0}],"data":{}},{"key":"do7ku","text":"There is a deeper surface hoar layer down 60 to 100 cm in the northern part of the region around Pine Pass which may also remain sensitive to human triggering..","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":
50-80 cm of snow sits on a persistent weak layer that was buried near the end of January. This layer consists of a melt-freeze crust in some areas, surface hoar in sheltered areas, and facets in some areas. This layer has been the most reactive at treeline and below treeline, where it exists as surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":207,"length":102,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"95jml","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2fehb","text":"Another layer of surface hoar that was buried in mid-January may still be possible to trigger, and it is now down about 80-100 cm.
Moderate to strong northwest wind will continue to redistribute the new snow building wind slabs in lee terrain features in the alpine and at exposed treeline. They may have a poor bond with old snow surfaces, for example, hard wind affected layers and pockets of surface hoar or surface facets. If the bond is poor, the wind slabs will be more reactive. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2qjm3","text":"Looming cornices may be large and fragile. With respect, give them a wide berth from above and below.
50-80 cm of snow sits on a persistent weak layer that was buried near the end of January. This layer consists of a melt-freeze crust in some areas, surface hoar in sheltered areas, and facets in some areas. This layer has been the most reactive at treeline and below treeline, where it exists as surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":207,"length":102,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"95jml","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2fehb","text":"Another layer of surface hoar that was buried in mid-January may still be possible to trigger, and it is now down about 80-100 cm.
Wind slabs will likely remain reactive to human triggers. Be aware of the potential for wind loading on a variety of aspects including atypical terrain features on southerly aspects due to recent northerly wind.
Wind slabs may remain triggerable by humans. Be aware of the potential for wind loading in atypical terrain features on southerly aspects due to recent northerly winds.
Moderate southwesterly wind continues to redistribute the new snow and build fresh wind slab in lee terrain features in the alpine and exposed treeline. Wind slabs will be particularly reactive anywhere snow overlies buried surface hoar or crust. The surface hoar layer is likely preserved in sheltered areas at and below treeline. Loose-dry sluffing may be seen from steep terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1rq0c","text":"Large, looming cornices exist along ridgelines. Give them a wide berth from above and below.
A cohesive slab 30-60 cm thick now sits above a buried weak layer of surface hoar, surface facets and crust. These slabs have been very reactive to human triggers showing wide propagations in moderate to low angle terrain. They have been catching people by surprise, so pay attention to signs of instability and stay clear of terrain traps like creeks, cliffs, and depressions below you.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"agiru","text":"
Moderate to strong westerly wind will redistribute the recent snow and form fresh wind slabs in lee terrain in the alpine and at exposed treeline. Wind slabs will particularly be reactive anywhere they overlie surface hoar that was reported to be widespread in many sheltered areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"hq77","text":"Loose-dry avalanches are likely in steep terrain features.
Storm slabs may be surprisingly large and easy to trigger due to the presence of buried weak layers of surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":103,"length":13,"key":0}],"data":{}},{"key":"c1d1d","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9q9kb","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1n9jn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
Storm slabs may be surprisingly large and easy to trigger due to the presence of buried weak layers of surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":103,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type
Recent northerly wind has created new thin new wind slabs in exposed lee terrain. Lingering widespread wind slabs from last week are still present but likely unreactive.
New snow in the south and central parts of the region combined with moderate to strong northwest winds is creating new touchy wind slabs in lee terrain features. These wind slabs may be sitting on top of weak surface hoar crystals in lower alpine and treeline areas, which would make them more easy to trigger.
Wind slabs may remain reactive to human triggers. Be aware of the potential for wind loading on a variety of aspects including atypical terrain features on southerly aspects due to recent northerly wind.
Recent strong winds have redistributed the new snow into wind slabs on lee features at upper elevations that are likely to be human-triggered.
Recent northerly wind has created thin wind slabs in exposed lee terrain. Lingering widespread wind slabs from last week are still present but likely unreactive.
Recent strong winds have redistributed the new snow into wind slabs on lee features at upper elevations that are likely to be human-triggered. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1n9jn","text":"
A surface hoar layer buried near the end of January is now down 40 to 80 cm and has recently been quite sensitive to triggering. This layer has been the most sensitive right at treeline, but it is thought to extend into the alpine too.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":177,"length":8,"key":0}],"data":{}}],"entityMap":{"0":{"type":
50-80 cm of snow sits on a persistent weak layer that was buried near the end of January. This layer consists of a melt-freeze crust in some areas, surface hoar in sheltered areas, and facets in some areas. This layer has been the most reactive at treeline and below treeline, where it exists as surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":207,"length":102,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"95jml","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2fehb","text":"Another layer of surface hoar that was buried in mid-January may still be possible to trigger, and it is now down about 80-100 cm.
Scattered flurries and moderate gusts throughout the day will continue to develop 20-30 cm thick storm slabs above a slippery crust layer. Human triggering will be likely in steep and wind affected terrain.
ecent strong winds have redistributed the new snow into wind slabs on lee features at upper elevations that are likely to be human-triggered. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8fmf6","text":"
Wind slabs may exist in atypical terrain features due to recent northerly wind direction. Although they tend to facet and lose cohesion in cold temperatures, wind slabs may remain sensitive to human triggers in steep convexities and near ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3um5b","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2qcdt","text":"Faceting and loss of cohesion in cornices can make them prone to fail, as can strong solar exposure. It is generally good practice to give cornices a wide berth from above and below.
A storm slab problem exists in the south of the region, where 40-60 cm of new snow may sit on a crust on solar aspects and possibly surface hoar elsewhere. Looking forward, it is not clear whether the recent snow will bond, or whether this weak interface will remain a concern for several days. Given this uncertainty, a prudent approach would assume this is a suspect interface until we have more information.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":54,"style":"BOLD"},{"offset":154,"length":2,"style":"BOLD"},{"offset":35,"length":5,"style":"UNDERLINE"},{"offset":35,"length":5,"style":"ITALIC"}],"entityRanges":[],"data":{}},{"key":"46sms","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"en1vk","text":"Loose dry sluffing may also be observed in the new snow.
Steep, lee westerly aspects have been the most reactive during the strong outflow winds. With winds shifting again to the south west and potential new snow, expect reactive wind slabs on multiple aspects and elevations. Wind slabs will be especially susceptible to human triggering where stiff and punchy feeling snow sits on top of weak faceted crystals. Note that in some places avalanche hazard may be elevated where winds have penetrated into open pockets of terrain even at lower elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3o8g9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"917c5","text":"
Winds have varied in strength and direction and have formed a complex pattern of wind slabs at upper elevations that may be possible to trigger. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point.
Outflow winds will redistribute loose snow building reactive slabs and reverse loading features. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or punchy. Be mindful of loose-snow or sluff in steeper features. Note that winds have been higher further north in the forecast region (around Bear Pass), and avalanche hazard may be higher where winds have penetrated into lower elevations.
With plenty of loose snow to redistribute, wind will be the major driver of avalanche hazard for now. Use caution around ridges, cornices, and loaded features. In steeper terrain, be cautious of dry-loose avalanches and mindful of sluffing.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1dksg","text":"A weak interface may exist in some locations approximately 60 cm down and could reach its threshold with wind loading, initiating a deeper slab. At this point, this interface seems spotty through the region and hasn't been as reactive as in the Lizard-Flathead region. However, it is something to keep on your radar.
Variable wind has formed reactive slabs on multiple aspects, and outflow winds continue to impact loose snow and reverse load features. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or punchy. Be mindful of loose-snow or sluff in steeper features.
40-65 cm snow sits above a buried weak layer of surface hoar, facets, and a crust. Recently, slabs have been very reactive to human triggers, surprising riders, and showing wide propagations in moderate to low angle terrain. This widespread layer has shown more reactivity on northerly aspects, however prominent surface hoar continues to be reported in test profiles on all aspects. Moving forward, cold temperatures may decrease the cohesive nature of the slab, but any input of wind or precipitation could easily re-ignite this weak layer. Heads up, we're moving into a low probability-high consequence scenario.
Variable wind has formed reactive slabs on multiple aspects, and outflow winds continue to impact loose snow and reverse load features. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or punchy. Be mindful of loose-snow or sluff in steeper features.
With plenty of loose snow to redistribute, wind will be the major driver of avalanche hazard for now. Use caution around ridges, cornices, and loaded features. In steeper terrain, be cautious of dry-loose avalanches and mindful of sluffing.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7hliq","text":"A weak interface may exist in some locations approximately 60 cm down and could reach its threshold with wind loading, initiating a deeper slab. At this point, this interface seems spotty through the region and hasn't been as reactive as in the Lizard-Flathead region. However, it is something to keep on your radar.
Wind slabs may exist in atypical terrain features due to recent northerly wind direction. Although they tend to facet and lose cohesion in cold temperatures, wind slabs may remain sensitive to human triggers in steep convexities and near ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2qcdt","text":"Faceting and loss of cohesion in cornices can make them brittle and prone to fail. Give them a wide berth from above and below.
60-80 cm of snow sits on a persistent weak layer that was buried near the end of January. This layer has been the most reactive at treeline, where it exists as surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":90,"length":83,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"95jml","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2fehb","text":"Another layer of surface hoar that was buried in mid-January may still be possible to trigger, and it is now down about 80-100 cm.
Human triggering of this layer is likely. Small terrain features are producing small avalanche results, bigger features could produce larger more dangerous avalanches. 40-65 cm snow sits above a buried weak layer of surface hoar, facets, and a crust (depending on elevation and aspect). The surface hoar interface is the biggest repeat offender, and things have been most reactive on northerly and easterly aspects at treeline, but don't let your guard down elsewhere. These kinds of avalanches can happen in surprisingly mellow terrain and be triggered from a distance away.
Watch for touchy storm slabs at all elevations, even in the trees.  20 to 40 cm of recent snow rests on an untested mix of nasty weak layers which include surface hoar, facets, crust and firm old wind slabs. Human triggering of these slabs is likely and storm slabs in wind exposed terrain may be quite sensitive. This problem is expected to get worse as we move through the weekend.
Human triggering of this layer is most likely on the BC side of the region, we are still working on figuring out its distribution. Small terrain features are producing small avalanche results, bigger features could produce larger more dangerous avalanches. 40-65 cm snow sits above a buried weak layer of surface hoar, facets, and a crust (depending on elevation and aspect). The surface hoar interface is the biggest repeat offender, and things have been most reactive on northerly and easterly aspects at treeline, but don't let your guard down elsewhere. These kinds of avalanches can happen in surprisingly mellow terrain and be triggered from a distance away.
Steep, lee westerly aspects have been the most reactive during the strong outflow winds. With winds shifting again to westerlies and potential new snow, expect reactive wind slabs on multiple aspects and elevations. Wind slabs will be especially susceptible to human triggering where stiff and punchy feeling snow sits on top of weak faceted crystals. Note that in some places avalanche hazard may be elevated where winds have penetrated into open pockets of terrain even at lower elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3o8g9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"917c5","text":"
Despite decreasing avalanche danger, there remains a lingering possibility to trigger persistent slab avalanches in isolated steep terrain features. The primary layer of concern is layer of surface hoar, facets, and/or crusts buried 30-60 cm deep throughout the region.
Steep, lee, westerly aspects have been the most reactive during the strong outflow winds. With winds shifting again to westerlies, expect reactive wind slabs on multiple aspects and elevations. Wind slabs will be especially susceptible to human triggering where stiff and punchy feeling snow sits on top of weak faceted crystals. Note that in some places avalanche hazard may be elevated where winds have penetrated into open pockets of terrain even at lower elevations.
Shifting winds from north to east to south have formed a complex pattern of wind slabs at upper elevations that will likely remain sensitive to human triggers. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point.
revious strong winds have redistributed recent low density snow into wind slabs on lee features at upper elevations that may be possible to human trigger.
Periods of moderate ridgetop winds have redistributed recent low density snow into wind slabs on lee features at upper elevations that may be possible to human trigger.
Human triggering of this layer is likely. Small terrain features are producing small avalanche results, bigger features could produce larger more dangerous avalanches. 40-65 cm snow sits above a buried weak layer of surface hoar, facets, and a crust (depending on elevation and aspect). The surface hoar interface is the biggest repeat offender, and things have been most reactive on northerly and easterly aspects at treeline, but don't let your guard down elsewhere! These kinds of avalanches can happen in surprisingly mellow terrain and be triggered from a distance away.
A wind slab problem exists in the north of the region. Wind slabs may remain reactive especially where they sit over a crust on solar aspects, at ridgetops and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":55,"style":"BOLD"},{"offset":34,"length":5,"style":"IT
Ongoing ridgetop winds have redistributed recent low density snow into wind slabs on lee features at upper elevations that remain reactive to human triggering. Strong sun may weaken cornices, which can act as triggers on slopes below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1q1rq","text":"
Shifting winds from north to east to south have formed a complex pattern of wind slabs at upper elevations that will likely remain sensitive to human triggers. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point.
A surface hoar layer buried near the end of January is now down 40 to 80 cm and has recently been quite sensitive to triggering. This layer has been the most sensitive right at treeline, but it is thought to extend into the alpine too.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":177,"length":8,"key":0}],"data":{}}],"entityMap":{"0":{"type":
Periods of moderate wind have redistributed recent low density snow into wind slabs on lee features at upper elevations that may be possible to human trigger. Strong sun may weaken cornices, which can act as triggers on slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1n9jn","text":"
With plenty of loose snow to redistribute, wind will be the major driver of avalanche hazard for now. Use caution around ridges, cornices, and loaded features. In steeper terrain, be cautious of dry-loose avalanches and mindful of sluffing.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7hliq","text":"A weak interface may exist in some locations approximately 60 cm down and could reach its threshold with wind loading, initiating a deeper slab. At this point, this interface seems spotty through the region and hasn't been as reactive as in the Lizard-Flathead region. However, it is something to keep on your radar.
As recently as Tuesday there were human triggered avalanches on this layer, including a size 2 remote triggered slide near Fernie. 40-65 cm snow sits above a buried weak layer of surface hoar, facets, and a crust. It has been most reactive at the treeline elevation on north through east aspects, but surface hoar continues to be reported in test profiles on all aspects.
Variable wind may form reactive slabs on multiple aspects, and outflow winds continue to impact loose snow and reverse load features. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or punchy. Be mindful of loose-snow or sluff in steeper features.
olated steep features in the alpine that did not avalanche during the previous natural cycle may still have potential to produce destructive persistent slab avalanches with a human trigger. Increase caution around steep alpine slopes where a supportive crust layer does not exist near the surface.
Shifting winds from north to east to south have formed a complex pattern of wind slabs at upper elevations that will likely remain sensitive to human triggers. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point.
Shifting winds from north to east to south have formed a complex pattern of wind slabs at upper elevations that will likely remain sensitive to human triggers. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1q1rq","text":"
The region has seen quite a bit of north wind over the last week which has formed fresh wind slabs that may remain sensitive to human triggering, especially in complex terrain.  Southeast wind this weekend may form thin wind slabs on north facing features too.
Despite decreasing avalanche danger, there remains a lingering possibility to trigger persistent slab avalanches in isolated steep terrain features. The primary layer of concern is layer of surface hoar, facets, and/or crusts buried 60-120 cm deep throughout the region.
Another round of new snow and wind will be forming reactive new wind slabs on Sunday. The freshest, touchiest slabs are expected to form in the lee of forecast south winds (think north slopes), but recent, potentially still reactive slabs may already be found on a wide range of aspects.
Elevated and shifting winds have transformed exposed areas into a complex minefield of wind slab hazards. Many new (touchy!) and recent (still reactive) slabs have formed over an interface of slippery crust (think solar aspects) or weak, faceted snow, contributing to and sustaining their reactivity. Light new snow amounts will feed into and possibly obscure these hazards for Monday.
Another round of new snow and wind will be forming reactive new wind slabs on Sunday. The freshest, touchiest slabs are expected to form in the lee of forecast south winds (think north slopes), but recent, potentially still reactive slabs may already be found on a wide range of aspects.
Despite decreasing avalanche danger, there remains a lingering possibility to trigger persistent slab avalanches in isolated steep terrain features. The primary layer of concern is layer of surface hoar, facets, and/or crusts buried 60-100 cm deep throughout the region.
Widespread new and reactive wind slabs exist at higher elevations as a result of strong easterly winds on Friday. All except due east aspects are well represented in reports from the last two days.
Shifting winds from north to east to south have formed a complex pattern of wind slabs at upper elevations that will likely remain sensitive to human triggers. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1q1rq","text":"
A weak layer of surface hoar is buried 40-70 cm deep that may be possible to human trigger. This layer has been most sensitive around treeline, but may also extend into alpine terrain and/or down into the trees.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":134,"length":8,"key":0}],"data":{}}],"entityMap":{"0":{"type":
10-20 cm of new snow falls amid strong wind. Storm slabs will be most reactive where they sit over a sun crust and in wind deposited pockets in lee terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2v10m","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"frc2d","text":"Cornices are experiencing rapid growth with strong west to southwest winds. Fresh, unsupported tabs that break off can act as triggers on slopes below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mmgd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqunl","text":"
A weak layer of surface hoar is buried 80-130cm deep that may be possible to human trigger. This layer has shown reactivity on sheltered, open slopes at treeline or in \"treeline-like\" features, such as cutblocks, below treeline.
With loose snow to redistribute, wind is a major driver of avalanche hazard for now. Use caution around ridges, cornices, and loaded features. In steeper sheltered terrain, be cautious of dry-loose avalanches and mindful of sluffing.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7hliq","text":"A weak interface may exist in some locations approximately 60 cm down and could reach its threshold with wind stiffened snow, initiating a deeper slab. At this point, this interface seems spotty through the region and hasn't been as reactive as in the Lizard-Flathead region. However, it is something to keep on your radar.
Wind slabs may be reactive to human triggers, especially more recent formations and where slabs have formed over a crust (think solar aspects). Increase your caution even more around large, hard wind slabs in alpine areas. these may overlie weak, sugary faceted snow.
Wind slabs at higher elevations could remain reactive to human triggers on Sunday, especially more recent formations and in areas where slabs may have formed over a crust (think solar aspects). Northeast outflow winds may have focused recent slab formation on south through east aspects, but winds are beginning to shift south and we already have reports of new slabs on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":371,"length":3,"style":"ITALIC"}],"entityRanges":[],"data":{}},{"key":"4s2jd","text":"Increase your caution even more around large, hard wind slabs in alpine areas. these may overlie weak, sugary, faceted snow.
Outflow winds have been redistributing loose snow, building reactive slabs and reverse loading features. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or punchy. Be mindful of loose-snow or sluff in steeper sheltered features. Note that in some places avalanche hazard may be elevated where winds have penetrated into lower elevations.
60-80 cm of snow sits on a persistent weak layer that was buried near the end of January. This layer has been the most reactive at treeline, where it exists as surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":90,"length":83,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"95jml","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2fehb","text":"Another layer of surface hoar that was buried in mid-January may still be possible to trigger, and it is now down about 80-100 cm.
60-80 cm of snow sits on a persistent weak layer that was buried near the end of January. This layer has been the most reactive at treeline, where it exists as surface hoar, but attention should also be paid to steep alpine terrain where avalanches have greater potential to step down to deep weak layers from the early season.","type":"unstyled","depth":0,"inlineSty
Wind slabs may be reactive to human triggers, especially more recent formations and where slabs have formed over a crust (think solar aspects). Increase your caution even more around large, hard wind slabs in alpine areas. these may overlie weak, sugary, faceted snow.
olated steep features in the alpine that did not avalanche during the previous natural cycle may still have potential to produce destructive persistent slab avalanches with a human trigger. Increase caution around steep alpine slopes where a supportive crust layer does not exist near the surface.
Despite decreasing avalanche danger, there remains a lingering possibility to trigger persistent slab avalanches in isolated steep terrain features. The primary layer of concern is layer of surface hoar, facets, and/or crusts buried 30-60 cm deep throughout the region.
20-40 cm of fresh snow with strong wind and increasing temperatures will likely form reactive slabs at all elevations. Pay close attention to changing conditions and avoid freshly wind loaded slopes.
This layer is STILL a player. Each day there is a steady trickle of rider triggered avalanches on this layer. Small terrain features are producing small avalanche results, bigger features could ruin your day. 40-65 cm snow sits above a buried weak layer of surface hoar, facets, and a crust (depending on elevation and aspect). Reports suggest it is touchiest on northerly and easterly aspects, but don't let your guard down elsewhere.
10-20 cm of new snow falls amid strong wind. Storm slabs will be most reactive where they sit over a sun crust and in wind deposited pockets in lee terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c5g81","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cijaj","text":"Cornices are experiencing rapid growth with strong west to southwest winds. Fresh, unsupported tabs that break off can act as triggers on slopes below.
Lingering wind slabs may remain reactive to human triggers at treeline and above.
Wind slabs may exist in atypical terrain features due to recent northerly wind direction. Although they tend to facet and lose cohesion in cold temperatures, wind slabs may remain sensitive to human triggers in steep convexities and near ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2qcdt","text":"Faceting and loss of cohesion in cornices can make them brittle and prone to fail. Give them a wide berth from above and below.
Outflow winds have been redistributing loose snow, building reactive slabs and reverse loading features. Avalanches will be most likely in wind loaded areas where the snow feels stiff or punchy. Note that in some places avalanche hazard may be elevated where winds have penetrated into unexpected places even at lower elevations.
Variable wind has formed reactive slabs on multiple aspects, and outflow winds continue to impact any remaining loose snow and reverse and cross load features. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or punchy. Note that in some places avalanche hazard may be elevated where winds have penetrated into unexpected places even at lower elevations.
An uptick in northeast winds on Thursday formed new wind slabs exist across south to southwest aspects in the alpine. These more recent slabs may remain sensitive to human triggers on Saturday. Older, more stubborn wind slabs may be found on a wide range of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8khl9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ctk0n","text":"Recent faceting and loss of cohesion in cornices can make them brittle and prone to fail. Give them a wide berth from above and below.
A bit of new snow and shifting winds will feed into existing wind slab problems formed in response to recent outflow winds. Especially new but also recent slabs are likely to be sensitive to human triggering on Sunday. This is an all aspects avalanche problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8khl9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ctk0n","text":"Recent faceting and loss of cohesion in cornices can make them brittle and prone to fail. Give them a wide berth from above and below.
Widespread new and reactive wind slabs exist at higher elevations as a result of strong easterly winds on Friday. All except due east aspects are well represented in reports from the last two days.
Recent northerly wind has created thin wind slabs in exposed lee terrain. Lingering widespread wind slabs from last week are still present but likely unreactive.
An uptick and shift to easterly winds on Thursday formed new wind slabs at upper elevations that will likely remain sensitive to human triggers. Given the recent variability in wind direction and unusual loading pattern, treat all aspects as suspect. Cornices may be reaching their breaking point. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1q1rq","text":"
Steep, lee, westerly aspects have been the most reactive during the strong outflow winds. With winds shifting again to westerlies, expect reactive wind slabs on multiple aspects and elevations. Wind slabs will be especially susceptible to human triggering where stiff and punchy feeling snow sits on top of weak faceted crystals. Note that in some places avalanche hazard may be elevated where winds have penetrated into open pockets of terrain even at lower elevations.
New snow and shifting winds will feed into existing wind slab problems formed in response to recent outflow winds. Especially new but also recent slabs will be sensitive to human triggering on Monday. This is an all aspects, increasing avalanche problem. Some local winds have reached into lower elevations. Keep your guard up below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8khl9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ctk0n","text":"Recent faceting and loss of cohesion in cornices can make them brittle and prone to fail. Give them a wide berth from above and below.
Despite decreasing avalanche danger, there remains a lingering possibility to trigger persistent slab avalanches in isolated steep terrain features. The primary layer of concern is layer of surface hoar, facets, and/or crusts buried 30-60 cm deep throughout the region.
Shifting winds from north to east to south have formed a complex pattern of wind slabs at upper elevations that will likely remain sensitive to human triggers. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point.
Human triggering of this layer is likely. Small terrain features are producing small avalanche results, bigger features produce larger more dangerous avalanches. 40-65 cm of snow sits above a buried weak layer consisting of surface hoar, facets, and a crust (depending on elevation and aspect). The surface hoar interface is the biggest repeat offender, and things have been most reactive on northerly and easterly aspects at treeline, but don't let your guard down elsewhere! These kinds of avalanches can happen in surprisingly mellow terrain and can be triggered from a distance away.
As of Monday afternoon the region has picked up 15 to 25 cm of snow which is not bonding well to the old surface.  We're expecting a northwest wind event Tuesday which may induce an avalanche cycle at upper elevations and will add stiffness to the storm slab problem.
In the southern half of the region 10 to 15 cm of snow is expected Tuesday with moderate northwest wind. Fresh storm slabs are expected to form which will likely be sensitive to human triggering.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6e1am","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2sol4","text":"Very little new snow is expected in the northern half of the region and this problem does not apply to those areas.
Recent (and ongoing) southwest winds are likely forming wind slabs at upper elevations. Previous variable winds may mean that wind slabs could be found on all aspects. The most reactive ones are likely to be found on northerly aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mmgd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqunl","text":"
Another 25-45 cm new snow by the end of the day will build touchy storm slabs, especially where they sit on cold facets, surface hoar or hard wind affected surfaces. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fiaqk","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"elvj4","text":"Strong southwest wind will continue to form wind slabs in the alpine and at treeline. The wind will contribute to cornice growth.
Watch for the formation of touchy storm slabs at all elevations, even in the trees.  20 to 60 cm of recent snow rests on an untested mix of nasty weak layers which include surface hoar, facets, crust and firm old wind slabs. Human triggering of these slabs is likely and storm slabs in wind exposed terrain may be quite sensitive. This problem is expected to get worse as we move through the weekend.
Moderate to strong northwest wind will form fresh wind slabs on lee terrain features where soft snow is available for transport. Wind slabs will be especially susceptible to human triggering where stiff and punchy feeling snow sits on top of weak faceted crystals.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"flr70","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1lpc4","text":"The wind direction shifted from north and east during the recent strong outflow winds to southwest, then west and now to northwest. During the strong outflow winds steep, lee westerly aspects have been the most reactive. The shifting winds have created wind slabs on multiple aspects and all elevations. Older wind slabs might also be present in open terrain pockets at treeline and below treeline. Cold temperatures preserved the weak bond between the slab and the weak faceted crystal layer underneath. These wind slabs may still be triggered by humans and propagate wider than expected.
Moderate northwest wind will form fresh wind slabs in alpine and treeline lee terrain features where soft snow is available for transport. Wind slabs will be especially susceptible to human triggering where stiff and punchy feeling snow sits on top of weak faceted crystals.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6oc9s","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"641a8","text":"The wind direction shifted from the recent strong outflow winds to westerly and now to northwest. During the strong outflow winds steep, lee westerly aspects have been the most reactive. The shifting winds have created wind slabs on multiple aspects and all elevations. Older wind slabs might also be present in open terrain pockets at treeline and below treeline. Cold temperatures preserved the weak bond between the slab and the weak faceted crystal layer underneath. These wind slabs may still be triggered by humans and propagate wider than expected.
5 to 15 cm of light density snow fell Sunday night into Monday accompanied by moderate southeast wind which has created a very soft and thin slab.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"353ie","text":"This slab rests on top of stiff wind slabs up to 40 cm in depth that have been most problematic on southeast, south and southwest facing slopes. These were created by strong outflow winds and have been the key element in a string of recent serious avalanche accidents. They may remain sensitive to human triggering.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a8ga9","text":"Give cornices a wide berth from above and below, recent faceting and loss of cohesion in cornices can make them brittle and prone to fail.
30-60 cm of snowfall will form thick and reactive storm slabs at higher elevations, with natural avalanches likely during periods of heavy precipitation. Human triggered avalanches are very likely.
Northern parts of the region are only expecting minor amounts of new snow, but strong to extreme wind will likely form touchy wind slabs around ridges and lee features.
Winds from all compass directions in the past week have formed a complex pattern of wind slabs at upper elevations that may be possible to trigger. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point.
Accumulating snowfall will be most reactive where impacted by wind. Expect to find a growing and increasingly reactive slab as new snow accumulates, the deepest and most reactive deposits will be around ridges and lee features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1shqo","text":"Now hidden under fresh snow, old wind slabs have become less reactive in the past week. However, you may still find hard old wind slabs remain sensitive to human triggering in the steeper more complex terrain features.
Time and more mild temperatures should be helping to slowly heal the wind slab problem, but you may find wind slabs which remain sensitive to human triggering in the steeper more complex terrain features. Be particularly wary of wind slabs around ridge crest.
Shifting winds from all compass directions in the past week have formed a complex pattern of wind slabs at upper elevations that may be possible to trigger. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1q1rq","text":"
Snowfall accumulating through the day is not expected to bond well to a slippery crust. Expect storm slab size and sensitivity to increase through Thursday.
Recent flurries may be hiding stiff wind slabs up to 40 cm in depth that have been most problematic on southeast, south and southwest facing slopes. These were created by strong outflow winds and have been the key element in a string of recent serious avalanche accidents. Windslabs may remain sensitive to human triggering especially in thin or rocky areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d7cbp","text":"Give cornices a wide berth from above and below, recent faceting and loss of cohesion in cornices can make them brittle and solar radiation can trigger cornices to fail.
Shifting winds from all compass directions in the past week have formed a complex pattern of wind slabs at upper elevations that may be possible to trigger. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point.
Shifting winds from all compass directions in the past week have formed a complex pattern of wind slabs at upper elevations that may be possible to trigger. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point.
In the southern half of the region, overnight flurries will add to 10 to 15 cm of snow accumulated through Tuesday. Storms slabs may remain sensitive to human triggering, especially where impacted by wind or solar input.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6e1am","text":"Smaller amounts of snow are expected in the northern half of the region and this problem does not apply to those areas.
The forecast calls for moderate to strong northwest wind overnight and during the day which will form fresh wind slabs in alpine and treeline lee terrain features where soft snow is available for transport. Wind slabs will be especially susceptible to human triggering where they sit on top of weak faceted crystals.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6oc9s","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"641a8","text":"Recent shifting winds have created wind slabs on multiple aspects and all elevations. Older wind slabs may still be triggered by humans and propagate wider than expected, especially where they sit on a weak faceted crystal layer.
The forecast calls for moderate to strong northwest wind overnight which will form fresh wind slabs on lee terrain features where soft snow is available for transport. Wind slabs will be especially susceptible to human triggering where stiff and punchy feeling snow sits on top of weak faceted crystals.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"flr70","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1lpc4","text":"The wind varied in direction over the last week. The shifting winds have created wind slabs on multiple aspects and all elevations. Older wind slabs might also be present in open terrain pockets at treeline and below treeline. Cold temperatures preserved the weak bond between the slabs and the weak faceted crystal layer underneath. These wind slabs may still be triggered by humans and propagate wider than expected.
Increasing southwesterly wind will redistribute flurries and loose snow to build new wind slabs and cover older, stiffer slabs. These older wind slab have become increasingly unreactive in the past week, but may still be possible to trigger in steeper more complex terrain features.
A bit of new snow and increasing northwest wind may begin to form  fresh wind slabs which will come to rest on weak facets and surface hoar.  This combination could make them surprisingly sensitive to human triggering. Cornices may be reaching their breaking point and can act as triggers on  slopes below.
20 to 40 cm of recent snow rests on an untested mix of nasty weak layers which include surface hoar, facets, crust and firm old wind slabs. Storm slabs in wind exposed terrain may be quite sensitive to human triggering. This problem is expected to get worse as we move through the weekend. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"62v7c","text":"
Hard wind slabs are widespread in the alpine and may still be possible to trigger on steep isolated features.
The 15-25 cm storm snow initially did not bond well to the old weak surface, and the warmer temperatures may continue to make slabs sensitive to triggering. This problem is more likely at upper elevations where warm temperatures impact previously dry snow.
New snow totals vary across the region from 5-15 cm. Moderate northwest winds at ridgetop are expected to drift the available new snow into fresh wind slabs that may be possible to trigger. Cornices may be reaching their breaking point and can act as triggers on slopes below.
Shifting winds from all compass directions in the past week have formed a complex pattern of wind slabs at upper elevations that may be possible to trigger. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. New snow and moderate south to west winds have likely fored new wind slab problems. Cornices may be reaching their breaking point and can act as triggers.
Shifting winds from all compass directions in the past week have formed a complex pattern of wind slabs at upper elevations that may be possible to trigger. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. A trace of new snow and moderate northwest winds may feed into existing wind slab problems, especially in areas with greater accumulations. Cornices may be reaching their breaking point and can act as triggers.
Winds from all compass directions in the past week have formed a complex pattern of wind slabs at upper elevations that may be possible to trigger. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Unstable cornices can act as triggers on slopes below.
Stormy conditions will bring new snow and strong wind to the region. This snow will build on slabs formed earlier this week. These storm slabs are likely around 30 to 50 cm thick south of Crowsnest Pass and 20 to 30 cm thick elsewhere. The slabs sit on sugary faceted snow formed during the cold spell mid-February. Keep in mind that strong wind will also form wind slabs in exposed terrain at higher elevations.
Time and more mild temperatures should be helping to slowly heal the wind slab problem, but you may find wind slabs which remain sensitive to human triggering in the steeper more complex terrain features. Be particularly wary of wind slabs around ridge crest.
Human triggering of this layer is likely. Small terrain features are producing small avalanche results, bigger features produce larger more dangerous avalanches. 40-65 cm of snow sits above a buried weak layer consisting of surface hoar, facets, and a crust (depending on elevation and aspect). The surface hoar interface is the biggest repeat offender, and things have been most reactive on northerly and easterly aspects at treeline and the treeline/alpine interface, but don't let your guard down elsewhere! These kinds of avalanches can happen in surprisingly mellow terrain and can be triggered from a distance away.
Increasing southwesterly winds will impact loose snow building fresh slabs and hiding older, stiffer wind slabs. Recent elevated and shifting winds transformed exposed areas into a complex minefield of wind slabs. Many new and recent (still reactive) slabs have formed over an interface of slippery crust (think solar aspects) or weak, faceted snow, contributing to and sustaining their reactivity.
Human triggering of this layer is still possible. Small terrain features are producing small avalanche results, bigger features can produce larger more dangerous avalanches. 40-65 cm of snow sits above a buried weak layer consisting of surface hoar, facets, and a crust (depending on elevation and aspect). ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7pdd5","text":"The surface hoar interface is the biggest repeat offender, and things have been most reactive on northerly and easterly aspects at treeline and the treeline/alpine interface, but don't let your guard down elsewhere! These kinds of avalanches can happen in surprisingly mellow terrain and can be triggered from a distance away.
The wind is forecast to shift to southwest overnight and increase to strong. The wind will form fresh wind slabs in the alpine and at exposed treeline throughout the day where soft snow is available for transport. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6oc9s","text":"Recent shifting winds have created wind slabs on multiple aspects and all elevations. Older wind slabs may still be triggered by humans, especially where they sit on a weak faceted crystal layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4dplr","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8qih3","text":"The strong southwest winds will contribute to cornice growth.
Fresh wind and loose snow are building new wind slabs and covering older, stiffer slabs. Time and more mild temperatures should be helping to slowly heal the older wind slab problem, but you may still find hard wind slabs which remain sensitive to human triggering in the steeper more complex terrain features. Be particularly wary of wind slabs around ridge crest and rocky areas.
Expect to find reactive wind slabs to the lee of the wind and in crossloaded features if you're nearing exposed terrain. A steady supply of new snow and wind through Tuesday (plus lots of recent snow available for transport) should keep this problem quite active for the near term, then gradually diminishing toward the end of the forecast period.
Increasing southwesterly winds will redistribute flurries and loose snow building new wind slabs and covering older, stiffer slabs. Now hidden under fresh snow, these older, stiffer wind slabs have become increasingly unreactive in the past week. However, you may still find (now buried 5-15cm) old, hard wind slabs which remain sensitive to human triggering in the steeper more complex terrain features.
This layer continues to be easily triggered by skiers and riders. Small terrain features are producing small avalanche results, bigger features produce larger more dangerous avalanches. 40-70 cm of snow sits above a buried weak layer consisting of surface hoar, facets, and a crust (depending on elevation and aspect). ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7pdd5","text":"The surface hoar interface is the biggest repeat offender, and things have been most reactive on northerly and easterly aspects at treeline and the treeline/alpine interface, but don't let your guard down elsewhere! These kinds of avalanches can happen in surprisingly mellow terrain and can be triggered from a distance away. This MIN report from Wednesday is a good illustration. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":327,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://w
Lingering wind slabs may remain reactive to human triggers at treeline and above.
New wind slabs may form over the day from snow and strong wind. The most likely terrain to find them is on leeward, steep slopes adjacent to ridges.
New snow totals vary across the region from 5-15 cm. Strong southwest wind Thursday is expected to form recent snow into fresh wind slabs which will come to rest on weak facets and surface hoar.   This combination could make them surprisingly sensitive to human triggering. Cornices may be reaching their breaking point and can act as triggers on slopes below.
New wind and storm slabs are expected to form as the wind blows and new snow falls. Wind slabs are expected to form first in exposed terrain, followed by widespread storm slab development as snow continues to accumulate into Friday. These slabs may not bond well to the surfaces beneath it, being composed of hard wind-affected snow, weak surface facets, and perhaps weak surface hoar in sheltered areas.
An ongoing succession of storms has been building storm slabs over a range of weak snow grains from the last drought period. Concerns for recent storm interfaces and new wind slab formations are multiplied when we consider the deeper, widespread persistent weak layer that has been waking up under recent incremental loading.
10-50 cm of recent snow sits overtop of weak facets. Due to this weak interface, slabs may be surprisingly sensitive to triggering. In the east of the region where less than 20 cm of snow fell, the problem is specific to wind loaded terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b1sk2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9alns","text":"Cornices have experienced rapid growth with strong westerly winds. Fresh, unsupported tabs that break off can act as triggers on slopes below.
Especially in the southern half of the region where temperatures stay elevated overnight, warm temperatures and sunny skies can increase the likelihood of cornice failures. A cornice fall can be hazardous on its own. Minimize exposure to slopes that have cornices overhead, especially during the heat of the day.
Storm slabs may continue to be reactive, especially in wind-loaded areas at higher elevations, and on south facing slopes if the sun comes out with some power. Variable winds in recent days may mean that wind loading may be found on all aspects.
Southwest wind may pick up late Thursday, if it does watch for the formation of fresh wind slabs. Winds from all compass directions in the past week have formed a complex pattern of wind slabs at upper elevations that may be possible to trigger. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Unstable cornices can act as triggers on slopes below.
New wind and storm slabs will form as the snow falls and the wind blows on Thursday and Friday. The wind is forecast to be strong and from the southwest, so use particular caution near ridges in lee terrain features. As the snow accumulates in sheltered areas, new storm slabs may develop on all aspects and at all elevations.
Snowfall accumulating through the day is not expected to bond well to a slippery crust. Southwesterly winds will impact loose snow and build reactive slabs. Expect storm slab size and sensitivity to increase through Friday.
20 to 40 cm o snow is expected to accumulate by Thursday afternoon, forming new storm slabs. The wind is forecast to howl from the southwest to northwest, so wind slabs will rapidly build at treeline and alpine elevations too. Including the weekend's snow, around 80 to 120 cm of recent storm snow will have built above the surfaces formed mid-February, potentially including weak surface hoar and/or faceted grains. All of this stacks up to another natural avalanche cycle expected for Thursday.
Wind will impact flurries and redistribute loose snow. Look for fresh wind slabs loading lee features.
15 to 35 cm of snow is expected to accumulate by Thursday afternoon, forming new storm slabs. The wind is forecast to howl from the southwest to northwest, so wind slabs will rapidly build at treeline and alpine elevations as well. Including the weekend's snow, around 40 to 80 cm of recent storm snow will have built above the surfaces formed mid-February, potentially including weak surface hoar and/or faceted grains. These slabs will remain likely for riders to trigger on Thursday. Should 25 cm or more snow accumulate, another natural avalanche cycle may occur on Thursday.
New snow totals vary across the region from 10 to 15 cm. Southwest wind is expected to pick up as we get closer to the weekend, when it arrives it is expected to form recent snow into fresh wind slabs which will come to rest on weak facets and surface hoar.  This combination could make them surprisingly sensitive to human triggering. Cornices may be reaching their breaking point and can act as triggers on slopes below.
Southwest wind is expected to pick up in the alpine Thursday afternoon, stay alert for the formation of fresh slabs. Shifting winds from all compass directions in the past week have formed a complex pattern of wind slabs at upper elevations that may be possible to trigger. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point and can act as triggers.
Accumulating snowfall will be most reactive where impacted by wind. Expect to find a growing and increasingly reactive slab as new snow accumulates, the deepest and most reactive deposits will be around ridges and lee features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1shqo","text":"Now hidden under fresh snow, older, stiffer wind slabs have become increasingly unreactive in the past week. However, you may still find (now buried 5-15 cm) old, hard wind slabs which remain sensitive to human triggering in the steeper more complex terrain features.
New snow totals vary across the region from 5-20 cm. Southwest wind is expected to pick up as we get closer to the weekend, when it arrives it is expected to form recent snow into fresh wind slabs which will come to rest on weak facets and surface hoar.  This combination could make them surprisingly sensitive to human triggering. Cornices may be reaching their breaking point and can act as triggers on slopes below.
Southwest wind is expected to pick up in the alpine Thursday afternoon, stay alert for the formation of fresh slabs.  This adds to the work that shifting winds from all compass directions have produced in the last week. Given the potential for cross-loading and reverse-loading, treat all aspects as suspect. Cornices may be reaching their breaking point and can act as triggers.
Accumulating snowfall will be most reactive where impacted by wind. Expect to find a growing and increasingly reactive slab as new snow accumulates, the deepest and most reactive deposits will be around ridges and lee features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7t4s2","text":"Fresh snow will also cover older, stiffer wind slabs. Last weekend, these older slabs were most problematic on southeast, south and southwest facing slopes, created by strong outflow winds and have been the key element in a string of recent serious avalanche accidents. Reactivity has since decreased over the week.
Southwest wind is expected to pick up as we get closer to the weekend,  when it arrives it is expected to form recent snow into fresh wind slabs  which will come to rest on weak facets and surface hoar.  This  combination could make them surprisingly sensitive to human triggering.  Cornices may be reaching their breaking point and can act as triggers on  slopes below.
New snow and wind are expected to form touchy storm slabs reactive to human triggers; especially in wind affected terrain.
New snow totals vary across the region from 10 to 30 cm. Southwest wind is expected to pick up as we get closer to the weekend, when it arrives it is expected to form recent snow into fresh wind slabs which will come to rest on weak facets and surface hoar.  This combination could make them surprisingly sensitive to human triggering. Cornices may be reaching their breaking point and can act as triggers on slopes below.
The wind is forecast to shift to southwest overnight and increase to extreme. It will form fresh wind slabs in the alpine and at treeline throughout the day where soft snow is available for transport. In the very south of the region where around 20 cm new snow is expected the fresh wind slabs will form faster and larger. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"acilq","text":"Recent shifting winds have created wind slabs on multiple aspects and all elevations. Older wind slabs may still be triggered by humans, especially where they sit on a weak faceted crystal layer. Wind slabs might also be present in open terrain pockets at treeline and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b5gq3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b2tvj","text":"The strong to extreme southwest winds will contribute to cornice growth.
New snow and wind are expected to form touchy storm slabs reactive to human triggers; especially in wind affected terrain.
This layer continues to be easily triggered by skiers and riders. Small terrain features are producing small avalanche results, bigger features produce larger more dangerous avalanches. 40-65 cm of snow sits above a buried weak layer consisting of surface hoar, facets, and a crust (depending on elevation and aspect). ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7pdd5","text":"The surface hoar interface is the biggest repeat offender, and things have been most reactive on northerly and easterly aspects at treeline and the treeline/alpine interface, but don't let your guard down elsewhere! These kinds of avalanches can happen in surprisingly mellow terrain and can be triggered from a distance away. This MIN report from Wednesday is a good illustration. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":327,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://w
New snow and wind are expected to form touchy storm slabs reactive to human triggers; especially in wind affected terrain.
Southerly winds and fresh flurries will encourage new wind slabs to form and hide older, stiffer wind slabs up to 40 cm in depth. The older slabs have been most problematic on southeast, south and southwest facing slopes, they were created by strong outflow winds and have been the key element in a string of recent serious avalanche accidents. With southerly winds, fresh new wind slabs may be more reactive on north and easterly slopes.
Continuing strong southwest wind will redistribute the new snow and older soft snow and form wind slabs in the alpine and at treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6oc9s","text":"Recent shifting winds have created wind slabs on multiple aspects and all elevations. Older wind slabs may still be triggered by humans, especially where they sit on a weak faceted crystal layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4dplr","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8qih3","text":"The strong southwest winds will promote cornice growth.
On Thursday fell 10 cm new snow throughout the region. In some colder areas as for example around Bear Pass and Rosswood fell 20-30 cm low density snow. Overnight 10-15 cm snow are expected and another 10-15 cm are in the forecast during the day on Friday. Storm slabs will form throughout the day and become increasingly reactive, especially where they sit on cold facets, surface hoar or hard wind affected surfaces. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fiaqk","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"elvj4","text":"Strong southwest wind will continue to form wind slabs in the alpine and at treeline. In areas with strong wind and intense snow fall slabs will form faster and be reactive sooner in the day.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"chn66","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b2tvj","text":"The strong southwest winds will promote cornice growth.
Accumulating snowfall will be most reactive where impacted by wind. Expect to find a growing and increasingly reactive slab as new snow accumulates, the deepest and most reactive deposits will be around ridges and lee features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7t4s2","text":"Fresh snow will also cover older, stiffer wind slabs up to 40 cm in depth. Last weekend, these older slabs were most problematic on southeast, south and southwest facing slopes, created by strong outflow winds and have been the key element in a string of recent serious avalanche accidents. Reactivity has since decreased over the week.
10 to 20 cm of new snow may consolidate into reactive storm slabs today. Steep terrain features will be the main slopes to look out for this problem. Also use caution in immediate lee terrain features if you see the wind is blowing the snow around.
Strong winds may spill over into low elevations Sunday night and Monday so watch for freshly wind affected snow lower down on the mountain than usual. Recent wind has varied in direction so wind slabs may be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"37oou","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"234hj","text":"Cornices are likely growing as well. Fresh, unsupported tabs breaking off can be dangerous on their own, they can also act as triggers on slopes below.
Expect to find older wind slabs on a wide range of aspects and touchy new slabs to the lee of the wind if you're nearing exposed terrain. A steady supply of new snow and even stronger wind should keep this problem active for several days.
Strong southwest wind has likely left reactive slabs in steep open terrain at alpine and treeline elevations, especially on north and east aspects.
Continuing strong southwest wind will redistribute the new snow and older soft snow and form reactive wind slabs in the alpine and at treeline. Wind slabs will be especially reactive where they sit on a weak faceted crystal layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"91ue1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a204f","text":"The strong southwest winds will promote cornice growth.
New storm and wind slabs are expected to form over the day on Thursday as the next storm rolls through, so expect the danger to increase as the day progresses. Storm slabs formed earlier this week also remain likely to be triggered by riders. The slabs may be around 20 to 50 cm thick, depending on how much snow fell in your riding area, and they may overly sugar faceted grains. Conservative terrain travel is recommended until the snow has some time to bond to the snowpack.
Recent (and ongoing) southwest winds are likely forming wind slabs at upper elevations. Previous variable winds may mean that wind slabs could be found on all aspects. The most reactive ones are likely to be found on northerly aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6id9t","text":"
Forecasts call for another 25-45 cm new snow by the end of Sunday with extreme wind and rising freezing levels. Storm slabs will become increasingly touchy, especially where they sit on cold facets, surface hoar or hard wind affected surfaces. The deepest and most reactive deposits will be in wind affected terrain.
New wind and storm slabs will form as the snow falls and the wind blows on Friday night and Saturday. The wind is forecast to be strong and from the southwest, so use particular caution near ridges in lee terrain features. As the snow accumulates in sheltered areas, new storm slabs may develop on all aspects and at all elevations.
Strong winds may spill over into low elevations Sunday night and Monday so watch for freshly wind affected snow lower down on the mountain than usual. Recent wind has varied in direction so wind slabs may be found on all aspects.
New snow and wind are expected to form storm slabs throughout the day that will be most reactive in wind affected terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8n6kh","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Two weak layers may exist between 30 and 100 cm deep. Widespread avalanche activity has already occurred on the layers, but they could still be triggered anywhere they haven't already failed. Look for signs of instability and continue treating the snowpack as suspect if you are uncertain whether the layer is still present in your riding area.
Cornices will become weak with daytime heating and the freezing level rising to 2700 m. Large cornice falls are a hazard of their own and can also trigger large persistent slab avalanches on the slopes below.
Two persistent weak layers exist in the snowpack:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cl7a6","text":"The upper layer is buried 30 to 50 cm and primarily consists of sugary faceted grains. ","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"renq","text":"The deeper layer is buried 60 to 100 cm. This layer consists of surface hoar, faceted grains, and/or a hard melt-freeze crust. The problem has been most prevalent around treeline and in openings below treeline, but also reaches into the lower alpine. ","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ekahd","text":"These layers could be triggered by riders anywhere they still exist. A warm and sunny Monday may increase the likelihood of triggering these layers.
10-20 cm of new snow fall amid strong wind. Storm slabs will be most reactive where they sit over a sun crust and in wind deposited pockets in lee terrain features at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7lllk","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a547i","text":"Cornices are experiencing rapid growth with strong west to southwest winds. Fresh, unsupported tabs that break off can act as triggers on slopes below.
Strong southwest winds are forecast at all elevations Monday. The recent snow sits above a hard crust and could remain triggerable where wind deposits exist.
The next wave of storms is expected to deliver significant amounts of new snow and wind over the next few days which will likely form yet another round of fresh sensitive storm slabs.  All the while, the snowpack is still adjusting to the 30 to 70 cm of warm snow that fell last weekend. The upper snowpack needs time to adjust to this new load and really can't be trusted right now.
Two layers of concern exist and have been reactive over the past couple of days. The upper layer being buried mid-February down 30-50 cm and has recently failed primarily on a sugary facet interface and the deeper layer of concern is found down 60-100 cm. This layer consists of surface hoar, faceted grains, and/or a melt-freeze crust. The layer has been most problematic around treeline elevations and in openings below treeline, but also reaches into the lower alpine. Avalanches are easily triggered by the weight of a person on this interface and have occurred on surprisingly shallow slope angles.
Wind slabs may continue to be reactive and may exist in many areas due to recent variable wind directions.
Continuing strong southwest wind will redistribute the new snow and older soft snow and form reactive wind slabs in the alpine and at treeline. Wind slabs will be especially reactive where they sit on a weak faceted crystal layer. The strong southwest winds will promote cornice growth.
New snow, rising temperatures and strong westerly wind will likely form fresh, thin wind slabs ontop of weak facets and surface hoar. This combination could make them surprisingly sensitive to human triggering. Cornices may be reaching their breaking point and can act as triggers on slopes below.
The 60+ cm of aging storm snow rests on hard wind-affected snow, weak facets, and perhaps weak surface hoar in sheltered areas.  This snow needs time to settle and stabilize before we can begin to trust it.
New snow and wind have formed touchy storm slabs reactive to human triggers; especially in wind affected terrain.
Fresh snow combined with moderate to strong winds will likely continue to form fresh and reactive storm slabs, especially in wind-loaded areas. A change in wind direction on Friday may mean wind loading can be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"697lo","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9a6kn","text":"Cornices are experiencing rapid growth with strong west to southwest winds, use caution on ridgelines, and in terrain with cornices above.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mmgd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqunl","text":"
Elevated winds from both the northeast and the southwest have been observed transporting loose snow in the region through Thursday and Friday, with even more wind on tap for Friday night. Expect to find reactive new wind slabs on a wide range of aspects as you approach wind-exposed terrain.
Storm slabs will be very reactive to human triggering on Sunday with 20-40 cm of fresh snow expected. Natural avalanche activity will be likely in alpine and treeline terrain, especially in heavier snowfall areas near the coast. Strong to extreme wind will be the main driver of natural avalanche activity.
Moderate to strong winds will likely continue to form fresh and reactive wind slabs. A forecast change in wind direction on Friday will mean that wind loading may be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"63aj0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9tmof","text":"Cornices have experienced rapid growth with recent strong west to southwest winds. Use caution on ridgelines, and in terrain with cornices above.
A weak frontal system will form new wind slabs on north and east aspects, while old stubborn buried slabs may exist on all aspects in steep high elevation terrain.
Strong southwest wind will continue to form touchy wind slabs in lee terrain features in the alpine and exposed treeline. As winds increase, slabs may form lower on slopes, into tree line areas, or in other unusual places. Older wind slabs formed under recent variable winds, be mindful that the upper snowpack could have a few layers of wind slab.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"blu76","text":"These wind slabs are slow to bond where they sit over cold sugary facets. There is also potential for wind slabs to step down to the late January persistent weak layer.
New wind and storm slabs are expected to form as the wind blows and new snow falls. These slabs may not bond well to the surfaces beneath it, being composed of hard wind-affected snow, weak surface facets, and perhaps weak surface hoar in sheltered areas.
Strong west-southwest wind will impact loose snow and build reactive slabs in lee features. As winds increase, slabs may form lower on slopes, into tree line areas, or in other unusual places. Older wind slabs formed under recent variable winds, be mindful that the upper snowpack could have a few layers of wind slab.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2h733","text":"Wind slabs are slow to bond where they sit over cold sugary facets. There is also potential for wind slabs to step down to the late January persistent weak layer.
New snow, rising temperatures and strong westerly wind will likely form fresh wind slabs ontop of weak facets and surface hoar. This combination could make them surprisingly sensitive to human triggering. Cornices may be reaching their breaking point and can act as triggers on slopes below.
Fresh snow combined with moderate to strong winds will likely continue to form fresh and reactive storm slabs, especially in wind-loaded areas. A change in wind direction on Friday may mean wind loading can be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"do3pe","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9a0fp","text":"Cornices are experiencing rapid growth with strong west to southwest winds, use caution on ridgelines, and in terrain with cornices above.
New snow overnight Saturday and Sunday will build reactive storm slabs at upper elevations. The wind is forecast to howl from the northwest to southwest, so wind slabs will rapidly build too. All of this stacks up to another natural avalanche cycle Sunday.
New wind and storm slabs are expected to form as the wind blows and new snow falls. These slabs may not bond well to the surfaces beneath it, being composed of hard wind-affected snow, weak surface facets, and perhaps weak surface hoar in sheltered areas.
Recent (and ongoing) southwest winds are likely forming wind slabs at upper elevations. Previous variable winds may mean that wind slabs could be found on all aspects. The most reactive ones are likely to be found on northerly aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mmgd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqunl","text":"
Storm slabs will be very reactive to human triggering on Monday with 20-40 cm of fresh snow expected. Natural avalanche activity will be likely in alpine and treeline terrain, especially in heavier snowfall areas near the coast. Strong to extreme wind will be the main driver of natural avalanche activity.
Fresh snow combined with moderate to strong winds will likely continue to form fresh and reactive storm slabs, especially in wind-loaded areas. A change in wind direction on Friday may mean wind loading can be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2t3ep","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"hm7t","text":"Cornices are experiencing rapid growth with strong west to southwest winds, use caution on ridgelines, and in terrain with cornices above.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a4k2r","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"97p48","text":"
Fluctuating freezing levels and heavy precipitation make it difficult to pinpoint what elevations will form storm slabs, but higher elevations could have up to 50 cm of fresh snow and very touchy slab conditions. Dial back your terrain choices if you observe more than 20 cm of new snow. Strong alpine wind could still produce natural avalanches on freshly loaded alpine features.
Around 50 to 100 cm of snow has accumulated across much of the region, falling with strong southwest wind. The snow and wind has rapidly formed storm and wind slabs that likely resulted in an avalanche cycle on the weekend. With another 20 to 40 cm of snow coming Sunday night into Monday and strong wind, the avalanche cycle may continue.
Storm slabs sitting on a hard rain crust may continue to be reactive to human triggers; especially in wind affected terrain.
Winds blew hard from the southwest then turned northwest leaving exposed areas highly variable. The recent snow sits above a hard crust and could be easily triggered where wind deposits exist and on slopes exposed to the sun.
Two layers of concern exist and have been reactive over the past couple of days. The upper layer being buried mid-February down 30-50 cm and has recently failed primarily on a sugary facet interface and the deeper layer of concern is found down 60-100 cm. This layer consists of surface hoar, faceted grains, and/or a melt-freeze crust. The layer has been most problematic around treeline elevations and in openings below treeline, but also reaches into the lower alpine. Avalanches have occurred on surprisingly shallow slope angles and the layer can easily be remotely triggered.
Cranking southwest wind and new snow have formed fresh new wind slabs. Changing winds from the northwest will add to the complex loading pattern. Wind slabs may be found on most aspects at upper elevations and may be more reactive where they overlie weak surfaces formed mid-February, potentially including weak surface hoar and/or faceted grains. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eku3i","text":"Large looming cornices exist. Be diligent and give them a wide berth from above and below. Fragile cornices may fail due to extreme wind and warming tempertures on Sunday.
20 cm. of new snow and strong westerly winds have formed storm slabs that are expected to remain reactive to human triggers; especially in wind affected terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8n6kh","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Strong northerly winds are poised to set up a reverse-loading situation in exposed terrain for Saturday. Sunshine during the day could activate wind-loaded slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":46,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"L
20 cm. of new snow and extreme east/southeast winds have formed storm slabs that are expected to remain reactive to human triggers; especially in wind affected terrain.
10-20 cm of new snow fell on Thursday with the heavier amounts in the southern parts of the region. This was accompanied by strong wind. This snow will build on slabs formed earlier this week. These storm slabs are likely around 40 to 70 cm thick south of Crowsnest Pass and 20 to 30 cm thick elsewhere. The slabs sit on sugary faceted snow formed during the cold spell mid-February. Keep in mind that strong wind will also form wind slabs in exposed terrain at higher elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2t70b","text":"Loose-dry avalanches may be easily triggered from steep terrain features, especially if the sun pokes out.
40-60 cm of new snow fell by Friday morning, forming new storm slabs. This brings 80 to 200 cm of snow above a mixed bag of old snow surfaces buried mid-February. In places where a weak bond exists, deeper and bigger slab avalanches may occur. The wind is forecast to howl from the northwest to southwest, so wind slabs will rapidly build at treeline and alpine elevations too. All of this stacks up to another natural avalanche cycle, especially on Sunday. Once the natural activity tapers you can expect human triggering to be likely.
40-80 cm of recent storm snow sits on a layer of weak, sugary facets. At upper elevations, the recent snow has been blown into reactive slabs in lee features. Recent avalanches have propagated widely and surprised riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c3g1u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3cvj7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7km1c","text":"Two more persistent weak layers are buried between 80-200 cm. These have not produced recent avalanches in the region that we know of, but have been responsible for several recent large avalanches in the neighboring North Rockies region, including two fatal avalanches in the past week.
Around 30 to 50 cm of snow from the weekend has likely formed storm slabs in sheltered areas and been blown into wind slabs in exposed terrain. The snow may not bond well to underlying surfaces, meaning human-triggering of large avalanches could remain likely.
A succession of storms over the past week has been building storm slabs over a range of weak surface grains. Although surface instabilities are likely becoming more focused toward wind-loaded areas, the storm snow interface doesn't inspire much confidence. Lingering concern for this interface outside of wind-exposed areas are multiplied when we consider the deeper, widespread persistent weak layer that has been waking up under the incremental loading pattern.
Moderate to strong southwest winds are expected to continue to form fresh and reactive wind slabs. Previous variable wind direction may mean that wind slabs could be found on all aspects.
30 cm of new snow fell Thursday. Storm and wind slab avalanches are reactive. The natural avalanche activity may taper off on Friday but these slabs will remain primed for skier and rider triggering. The slabs may be around 20 to 50 cm thick, depending on how much snow fell in your riding area, and they may overly sugar faceted grains. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4bhb","text":"Loose-dry avalanches may be easily triggered, especially if the sun pokes out.
Wind slabs may continue to be reactive and may exist in many areas due to recent variable wind directions.
Cranking southwest wind and new snow have formed fresh new wind slabs. Changing winds from the northwest on Friday will add to the complex loading pattern. Wind slabs may be found on most aspects at upper elevations.
Fresh wind slabs will likely be forming as westerly winds increase in intensity throughout the day.
Up to 50 cm of snow has accumulated by Thursday forming new storm slabs. The wind is forecast to howl from the southwest to northwest, so wind slabs will rapidly build at treeline and alpine elevations too. Including the weekend's snow, around 80 to 120 cm of recent storm snow will have built above the surfaces formed mid-February, potentially including weak surface hoar and/or faceted grains. All of this stacks up to another natural avalanche cycle. Once the natural activity tapers you can expect human triggering to be likely.
Cranking southwest wind and new snow have formed fresh new wind slabs. Changing winds from the northwest on Friday will add to the complex loading pattern. Wind slabs may be found on most aspects at upper elevations and may be more reactive where they overlie weak surfaces formed mid-February, potentially including weak surface hoar and/or faceted grains. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eku3i","text":"Large looming cornices exist. Be diligent and give them a wide berth from above and below. Cornices may fail due to extreme wind and warming tempertures on Sunday.
Storm slabs may continue to be reactive, especially in wind-loaded areas at higher elevations. Variable winds in recent days may mean that wind loading can be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mmgd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqunl","text":"
Between rising temperatures, ramping winds, and continued snowfall, the 20-60 cm of recent low density snow is expected to rapidly settle and develop into a slab overtop of weak, sugary facets on Sunday. Storm slab size and sensitivity to triggering will likely increase throughout the day.
Forecasted snow and strong wind will rapidly form new storm and wind slabs. Weather models suggest 20 to 40 cm of snow by Monday late afternoon but enhanced snowfall may occur, bringing even more to the region. Best to avoid avalanche terrain if you find 25+ cm of snow accumulation, as an avalanche cycle may occur.
Surface snow will lose cohesion and become unstable with solar warming during the day. Avoid exposing yourself to terrain where a small wet loose release could have big consequences.
Wind slabs may continue to be reactive and may exist in many areas due to recent variable wind directions.
Storm slabs may continue to be reactive, especially in wind-loaded areas at higher elevations. Variable winds in recent days may mean that wind loading can be found on all aspects.
Up to 30 cm of new storm snow fell at upper elevations Sunday. Storm slabs are reactive at upper elevations, potentially running full path into lower elevations. The wind is forecast to howl from the southwest, so wind slabs will rapidly build too.
ind slabs could linger in steep, lee terrain features at high elevations. The wind howled from the south to east, so expect to find them predominantly on west to north aspects.
Between rising temperatures, ramping winds, and continued snowfall, 20-40 cm of recent low density snow is expected to develop into a slab overtop of weak, sugary facets on Sunday. Storm slab size and sensitivity to triggering will likely increase throughout the day.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"62v7c","text":"
Between rising temperatures, ramping winds, and continued snowfall, the 20-60 cm of recent low density snow is expected to rapidly settle and develop into a slab overtop of weak, sugary facets on Sunday. Storm slab size and sensitivity to triggering will likely increase throughout the day.
Storm slabs may continue to be reactive, especially in wind-loaded areas at higher elevations. Variable winds in recent days may mean that wind loading can be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mmgd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqunl","text":"
A frontal system leaving the region will leave reactive slabs above the rain line. Southern parts of the region could have 40-60 cm of snow forming a widespread storm slab problem on all steep slopes at upper elevations, while further north, slabs are most likely found on wind-loaded slopes. Strong alpine wind could still produce natural avalanches on freshly loaded alpine features.
New reactive wind and storm slabs have formed with the 30-60 cm+ new snow falling and strong winds blowing through the weekend. The snowpack will take time to adjust to the new load.
Recent (and ongoing) southwest winds are likely forming wind slabs at upper elevations. Previous variable winds may mean that wind slabs could be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mmgd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqunl","text":"
40-80 cm of recent storm snow sits on a layer of weak, sugary facets. Recent avalanches on this layer have propagated widely and surprised riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7km1c","text":"Two more persistent weak layers are buried between 80-200 cm. These have not produced recent avalanches in the region that we know of, but have been responsible for several recent large avalanches in the neighboring areas like the North Rockies, including two fatal avalanches in the past two weeks.
The weekend's storm delivered 20-60 cm across the region. The combination of new snow and extreme southerly winds has likely left reactive slabs in steep terrain at higher elevations.
30-100 cm of recent storm snow continues to accumulate and settle into a slab in the mild temperatures. This storm slab sits overtop a thick layer of weak, sugary facets. At upper elevations, the recent snow will be easily blown around by strong to extreme westerly winds, forming thick, reactive slabs in lee features.
30-80 cm of recent storm snow continues to accumulate and settle into a slab in the mild temperatures. This storm slab sits overtop a thick layer of weak, sugary facets. At upper elevations, the recent snow will be easily blown around by strong to extreme westerly winds, forming thick, reactive slabs in lee features.
30-100 cm of recent storm snow continues to accumulate and settle into a slab in the mild temperatures. This storm slab sits overtop a thick layer of weak, sugary facets. At upper elevations, the recent snow will be easily blown around by strong to extreme westerly winds, forming thick, reactive slabs in lee features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"62v7c","text":"
25-50 cm of recent snow, along with strong southwest wind, has likely left reactive slabs on steep and wind loaded slopes.
20 to 40 cm of snow and strong southwest wind are forecast above around 1500 m, which will form new storm slabs in sheltered areas and wind slabs in exposed terrain. Best to avoid avalanche terrain if you find 25+ cm of snow accumulation, as an avalanche cycle may occur.
40-100 cm of recent storm sits overtop a thick layer of weak, sugary facets. Due to this weak interface, storm slabs may be surprisingly sensitive to triggering. At upper elevations, the recent snow has likely been blown around by strong to extreme westerly winds, forming thick, reactive slabs in lee features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"62v7c","text":"
40-80 cm of recent storm sits overtop a thick layer of weak, sugary facets. Due to this weak interface, storm slabs may be surprisingly sensitive to triggering. At upper elevations, the recent snow has likely been blown around by strong to extreme westerly winds, forming thick, reactive slabs in lee features.
40-80 cm of recent storm sits overtop a thick layer of weak, sugary facets. Due to this weak interface, storm slabs may be surprisingly sensitive to triggering. At upper elevations, the recent snow has likely been blown around by strong to extreme westerly winds, forming thick, reactive slabs in lee features.
Two layers of concern exist and have been reactive over the past couple of days. The upper layer being buried mid-February down 30-50 cm and has recently failed primarily on a sugary facet interface and the deeper layer of concern is found down 60-100 cm. This layer consists of surface hoar, faceted grains, and/or a melt-freeze crust. The layer has been most problematic around treeline elevations and in openings below treeline, but also reaches into the lower alpine. Avalanches are easily triggered by the weight of a person on this interface and have occurred on surprisingly shallow slope angles.
10-30 cm of recent snow sits overtop of weak facets and/or extensively wind affected surfaces. Due to this weak interface, fresh slabs may be surprisingly sensitive to triggering. In the east of the region where less than 20 cm of snow fell, the problem is specific to wind loaded terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b1sk2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9alns","text":"Cornices have likely experienced rapid growth with strong westerly winds. Unsupported tabs that break off can act as triggers on slopes below.
The weekend's storm delivered 30 cm to the Whistler area and up to 60 cm in deeper areas further west and south. The combination of new snow and extreme southerly winds has likely left reactive slabs in steep terrain at higher elevations.
While most areas are capped by a thick rain crust, high elevation terrain may have accumulated up to 50 cm of snow with storm slabs lingering on steep and wind loaded terrain features.
Both storm and wind slabs remain likely to be triggered by riders on Tuesday. The slabs may be around 20 to 50 cm thick, depending on how much snow fell in your riding area. Conservative terrain travel is recommended until the snow has some time to bond to the snowpack.
Both storm and wind slabs remain likely to be triggered by riders on Tuesday. The thickest slabs are likely found at higher elevations as well as in the south and west of the region where the most snow fell. Conservative terrain travel is recommended until the snow has some time to bond to the snowpack.
Around 40 to 60 cm of snow has formed storm slabs in sheltered areas and been blown into wind slabs in exposed terrain. The snow may not bond well to underlying surfaces, meaning human-triggering of large avalanches remains likely.
Over 100 cm of snow has accumulated across much of the region, falling with strong south to west wind. Storm and wind slabs will likely remain touchy to human traffic on Tuesday, particularly where the snow overlies weak surface hoar and/or faceted grains. Don't let your guard down as the skies clear!
40-100 cm of recent storm sits overtop a thick layer of weak, sugary facets. Due to this weak interface, storm slabs may be surprisingly sensitive to triggering. At upper elevations, the recent snow has likely been blown around by strong to extreme westerly winds, forming thick, reactive slabs in lee features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"62v7c","text":"
40-80 cm of recent storm sits overtop a thick layer of weak, sugary facets. In the Monashees, this interface appears to be bonding well, while reactivity may persist longer in the Selkirks. Human triggering is most likely in wind loaded features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"75b19","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ans60","text":"Cornices have likely experienced rapid growth with recent strong westerly winds. Fresh, unsupported tabs may weaken in the sun Wednesday. Tabs that break off can act as triggers on slopes below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mmgd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqunl","text":"
10-30 cm of recent snow sits overtop of weak facets and/or extensively wind affected surfaces. Due to this weak interface, fresh slabs may be surprisingly sensitive to triggering. In the east of the region where less than 20 cm of snow fell, the problem is specific to wind loaded terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b1sk2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9alns","text":"Cornices have likely experienced rapid growth with recent strong westerly winds. Fresh, unsupported tabs may weaken in the sun Wednesday. Tabs that break off can act as triggers on slopes below.
40-80 cm of recent storm sits overtop a thick layer of weak, sugary facets. In the Monashees, this interface appears to be bonding well, while reactivity may persist longer in the Selkirks. Human triggering is most likely in wind loaded features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f2jli","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cijaj","text":"Cornices have likely experienced rapid growth with recent strong westerly winds. Fresh, unsupported tabs may weaken in the sun Wednesday. Tabs that break off can act as triggers on slopes below.
Over 100 cm of snow has accumulated across much of the region, falling with strong south to west wind. Storm and wind slabs will likely remain touchy to human traffic on Wednesday, particularly where the snow overlies weak surface hoar and/or faceted grains. The next storm will start impacting the region Wednesday afternoon, bringing more snow and strong to extreme southwest wind.
It remains possible for riders to trigger both storm slabs in sheltered terrain and wind slabs in exposed terrain. These slabs may not be bonding well to underlying snow surfaces. The next storm starts impacting the region Wednesday afternoon, which will form new wind and storm slabs.
A modest supply of new snow has fueled the continued formation of thin but potentially reactive wind slabs. Older wind slabs exist on a variety of aspects and may remain reactive where they sit over facets.
New reactive wind and storm slabs have formed with the 30-70+ new snow falling and strong winds blowing through the weekend. The snowpack will take time to adjust to the new load.
20-40 cm of new snow and strong westerly winds have formed storm slabs that are expected to remain reactive to human triggers on Saturday. Wind loaded and sun-exposed south-facing slopes will be especially suspect on Saturday.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8n6kh","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Wet loose avalanches may release naturally on steep sun-exposed slopes.
Cranking southwest wind and new snow have formed fresh new wind slabs. Reactive storm slabs may be found in wind-sheltered terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2b1mr","text":"Large looming cornices exist. Be diligent and give them a wide berth from above and below.
Two layers of concern exist and have been reactive over the past couple of days. The upper layer being buried mid-February down 30-50 cm and has recently failed primarily on a sugary facet interface and the deeper layer of concern is found down 60-100 cm. This layer consists of surface hoar, faceted grains, and/or a melt-freeze crust. The layer has been most problematic around treeline elevations and in openings below treeline, but also reaches into the lower alpine. Avalanches have occurred on surprisingly shallow slope angles and the layer can easily be remotely triggered.
New snow and wind have formed touchy storm slabs reactive to human triggers, especially in wind affected terrain. Avoid steep south-facing slopes if the sun comes out.
Ongoing upper level wind from the northwest is likely reverse-loading recent snow into reactive wind slabs in atypical terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":54,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
Recent storm snow accumulations are up to 80 cm in some parts of the region. It will continue to snow over the next two days building reactive storm slabs through the forecast period.  Strong southwest wind persists, so wind slabs will rapidly build at upper elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"avso1","text":"Large looming cornices exist along ridgelines, they may weaken with the warm-up on Thursday.
Winds blew hard from the southwest then turned northwest leaving exposed areas highly variable. The recent snow sits above a hard crust and could be easily triggered where wind deposits exist.
Reactive wind slabs may be found in atypical terrain features. Wind direction has been predominantly westerly but may also may have southerly or northerly components, depending on elevation.
40-80 cm of recent storm snow sits on a layer of weak, sugary facets. At upper elevations, the recent snow has been blown into reactive slabs in lee features. Recent avalanches have propagated widely and surprised riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c3g1u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3cvj7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7km1c","text":"Two more persistent weak layers are buried between 80-200 cm. These have not produced recent avalanches in the region that we know of, but have been responsible for several recent large avalanches in the neighboring North Rockies region, including two fatal avalanches in the past week.
With 30-50 cm of new snow, storm slabs are expected to remain reactive over the net few days. Deepest deposits are likely found where the wind has redistributed the new snow into lee terrain. These slabs may not bond well to the surfaces beneath it, being composed of hard wind-affected snow, weak surface facets, and perhaps weak surface hoar in sheltered areas.
Lingering wind slabs may remain reactive to human triggers at treeline and above.
Loose wet avalanches are most likely on sun exposed slopes and at elevations experiencing above freezing temperatures for the first time. A moist or wet snow surface, pinwheeling or loose wet point releases out of the rocks are good indicators that it is time to back off. Keep in mind that loose wet avalanches can serve as triggers for persistent slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Reactive wind slabs may be found in atypical terrain features. Wind direction has been predominantly westerly but may also may have southerly or northerly components, depending on elevation.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"46nh9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"r04i","text":"Rising freezing levels on Sunday may promote settlement and slab development in the previously cold, dry snow at lower elevations. This could result in isolated reactivity where this snow sits over surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
An ongoing succession of storms has been building storm slabs over a range of weak grains from the last drought period. Concerns for recent storm interfaces and new wind slab formations are multiplied when we consider the deeper, widespread persistent weak layer that has been waking up under recent incremental loading.
Lingering wind slabs may remain reactive to human triggers at upper elevations.
A modest supply of new snow has fueled the continued formation of thin but potentially reactive wind slabs recently. Older wind slabs exist on a variety of aspects and may remain reactive where they sit over facets.
Strong southwest winds are forecast at all elevations Monday. The recent snow sits above a hard crust and could remain triggerable where wind deposits exist.
Both storm and wind slabs remain likely to be triggered by riders on Wednesday. The slabs may be around 20 to 50 cm thick, depending on how much snow fell in your riding area. Use particular caution on sun-exposed slopes as well as in lee terrain features near ridges. Conservative terrain travel is recommended until the snow has some time to bond to the snowpack.
A modest supply of new snow has fueled the continued formation of cornices and thin but potentially reactive wind slabs on a variety of aspects.
Light snowfall and strong southwest wind are likely forming fresh, thin wind slabs in lee features at upper elevations. Older wind slabs may remain reactive where they sit over facets and may exist on a variety of aspects due to recent variable wind direction.
Two persistent weak layers exist in the snowpack:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"271l5","text":"The upper layer is buried 30 to 60 cm and primarily consists of weak faceted grains.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"28fmc","text":"The deeper layer is buried 60 to 100 cm and consists of surface hoar, faceted grains, and/or a hard crust. The problem has been most prevalent around treeline elevations and in openings below treeline, but also reaches into the lower alpine. ","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c2fn8","text":"These layers could be triggered by riders anywhere they still exist in the snowpack.
Two persistent weak layers exist in the snowpack that could be triggered by riders:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"271l5","text":"The upper layer is buried 30 to 60 cm and primarily consists of weak faceted grains.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"28fmc","text":"The deeper layer is buried 60 to 100 cm and consists of surface hoar, faceted grains, and/or a hard crust.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c2fn8","text":"The most likely areas to trigger these layers is where a hard wind slab exists above the layers and where the snowpack is not capped by a thick melt-freeze crust.
Two layers of concern exist and have been reactive over the past couple of days. The upper layer being buried mid-February down 30-50 cm and has recently failed primarily on a sugary facet interface and the deeper layer of concern is found down 60-100 cm. This layer consists of surface hoar, faceted grains, and/or a melt-freeze crust. The layer has been most problematic around treeline elevations and in openings below treeline, but also reaches into the lower alpine.
Wet loose avalanches may release naturally on steep sun-exposed slopes.
Wind slabs may be found on a variety of aspects. Recent wind direction has ranged from northwest to south.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Light snowfall and strong southwest wind are likely forming fresh, thin wind slabs in lee features at upper elevations. Older wind slabs exist on a variety of aspects and may remain reactive where they sit over a thin layer of facets on a hard bed surface.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9nnpt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"234hj","text":"Cornices are likely growing as well. Fresh, unsupported tabs breaking off can be dangerous on their own, they can also act as triggers on slopes below.
Steady wind from the southwest and northwest has likely left some unstable slabs on steep alpine slopes.
Recent storm snow accumulations are up to 60-80 cm in some parts of the region. It will continue to snow over Wednesday night and Thursday building reactive storm slabs through the forecast period.  Strong southwest wind persists, so wind slabs will rapidly build at upper elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"avso1","text":"
Numerous persistent weak layers exist 50-200 cm below the surface. While there have not been reports of avalanches on these layers since last week, the current warming trend has us extra suspect of large natural and human triggered avalanches on these layers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1q8iq","text":"Simple terrain and extra conservative decision making is strongly encouraged.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fojl5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8mieq","text":"
Wet loose avalanches are likely to release naturally on steep sun-exposed slopes.
Cranking south-southwest wind and new snow have formed fresh new wind slabs. Reactive storm slabs may be found in isolated wind-sheltered terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"245es","text":"Large, looming cornices exist along ridgelines. They may become weak and fail during periods of solar radiation and rising freezing levels. Keep your head up and watch for obvious signs of warming like natural avalanches, snowballing, moist and sticky snow surfaces. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2b1mr","text":"
Cranking southwest wind and new snow have formed fresh new wind slabs. They may be more reactive where they overlie weak surfaces formed mid-February, potentially including weak surface hoar and/or faceted grains. Reactive storm slabs may be found in wind-sheltered terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eku3i","text":"Large looming cornices exist. Be diligent and give them a wide berth from above and below. Fragile cornices may fail due to extreme wind.
Wet loose avalanches are likely to release naturally on steep sun-exposed slopes.
Strong south winds have had ample snow to drift into reactive wind slabs on lee features at upper elevations. Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness. Triggering large wind slabs on specific features remains possible.
Cornices are large and looming along many ridgelines. Cornices may weaken during daytime heating, increasing the likelihood of being naturally triggered or failing from the weight of a human.
Reactive wind slabs may be found in atypical terrain features. Wind direction has been predominantly westerly but may also may have southerly or northerly components, depending on elevation.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Gusty winds will impact dry snow building slabs in lee features. Slabs are likely to be most reactive in areas below ridges or steep and unsupported features.
Wet loose avalanches are likely to release naturally on steep sun-exposed slopes.
Strong south winds have had ample snow to drift into reactive wind slabs on lee features at upper elevations. Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness. Triggering large wind slabs on specific features remains possible.
Cranking southwest wind and new snow have formed fresh new wind slabs. Reactive storm slabs may be found in wind-sheltered terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eku3i","text":"Large looming cornices exist. Be diligent and give them a wide berth from above and below.
Up to 60 cm of new storm snow fell by Monday building touchy storm slabs. Natural avalanche activity may taper on Tuesday, however; conditions may be primed for skier and rider triggering. The wind is forecast to howl from the southwest, so wind slabs will rapidly build at upper elevations.
Two layers of concern exist and have been reactive over the past couple of days. The upper layer being buried mid-February down 30-50 cm and has recently failed primarily on a sugary facet interface and the deeper layer of concern is found down 60-100 cm. This layer consists of surface hoar, faceted grains, and/or a melt-freeze crust. The layer has been most problematic around treeline elevations and in openings below treeline, but also reaches into the lower alpine. Avalanches are easily triggered by the weight of a person on this interface and have occurred on surprisingly shallow slope angles.
Cornices will become weak with daytime heating and the freezing level staying at 2700 m overnight. Large cornice falls are a hazard of their own and can also trigger large persistent slab avalanches on the slopes below.
In the north of the region, 30-50 cm of snow has been  redistributed by strong south winds into reactive wind slabs on lee features. Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness. Triggering large wind slabs on specific features remains possible. ","type":"unstyled","depth":0,"inlineStyl
Assuming there's still snow available for transport, the wind should be building new wind slabs to the lee of the wind and in cross-loaded features.
Wind slabs may continue to be reactive and may exist in many areas due to recent variable wind directions. They will likely be the most reactive on northerly to easterly aspects at upper elevations.
Incremental snowfall and moderate winds from the southwest have formed shallow wind slabs in lee features at upper elevations that may be possible to trigger.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Recent winds have redistributed storm snow into wind slabs at upper elevations. Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness.
The recent storm created wind slabs across exposed leeward and crossloaded terrain.
A wet loose avalanche problem exists in the south of the region, where sunny skies are coupled with freezing levels reaching 2000 m Wednesday. Loose wet avalanches are most likely on steep sun exposed slopes and at elevations experiencing above freezing temperatures for the first time.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":37,"length":26,"style":"ITALIC"},{"offset":37,"length":26,"style":"B
40-80 cm of recent storm snow sits on a layer of weak, sugary facets. At upper elevations, the recent snow has been blown into reactive slabs in lee features. Recent avalanches have propagated widely and surprised riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c3g1u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3cvj7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7km1c","text":"Two more persistent weak layers are buried between 80-200 cm. These have not produced recent avalanches in the region that we know of, but have been responsible for several recent large avalanches in the neighboring North Rockies region, including two fatal avalanches in the past two weeks.
Recent (and ongoing) southwest winds are likely forming wind slabs at upper elevations. Previous variable winds may mean that wind slabs could be found on all aspects. The most reactive ones are likely to be found on northerly aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6id9t","text":"
Primarily southwest winds have created new wind slabs on north and east aspects.
A wet loose avalanche problem exists in the south of the region, where sunny skies are coupled with freezing levels reaching 2200 m Thursday. Loose wet avalanches are most likely on steep sun exposed slopes and at elevations experiencing above freezing temperatures for the first time.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":37,"length":26,"style":"ITALIC"},{"offset":37,"length":26,"style":"B
Loose wet avalanches are most likely on sun exposed slopes and at elevations experiencing above freezing temperatures for the first time. A moist or wet snow surface, pinwheeling or loose wet point releases out of the rocks are good indicators that it is time to back off. Keep in mind that loose wet avalanches and weakened cornices can serve as triggers for persistent slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Recent storm snow accumulations are up to 60-80 cm in some parts of the region.  More snow in the forecast for Thursday night may keep these storm slabs reactive to human triggering on Friday, especially in wind loaded areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"avso1","text":"
Strong southwest winds are expected to continue and may form fresh and reactive wind slabs in leeward terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2b1mr","text":"
Two layers of concern exist and have been reactive over the past couple of days. The upper layer is down 30-50 cm and has recently failed primarily on a sugary facet interface. The deeper layer of concern is down 60-100 cm. This layer consists of surface hoar, faceted grains, and/or a melt-freeze crust. The layer has been most problematic around treeline elevations and in openings below treeline, but also reaches into the lower alpine.
Wet loose avalanches may release naturally on steep sun-exposed slopes. A wet snow surface, pinwheeling or loose wet point releases out of the rocks are good indicators that it is time to back off. Keep in mind that loose wet avalanches and weakened cornices can serve as triggers for persistent slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Uncertainties about buried weak layers warrants conservative terrain choices. There are numerous persistent weak layers 50-150 cm below the surface that produced large natural and human triggered avalanches in the last week of February. We are uncertain whether time has helped these weaknesses heal or whether recent warming has kept them reactive.
You may find pockets of wind slab behind exposed ridgelines in the alpine. Cornices may be present as well.
Recent winds have redistributed storm snow into wind slabs at upper elevations. Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness.
Wind slabs may remain reactive in steep open terrain at alpine and treeline elevations, especially on north and east aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqunl","text":"
You may find pockets of wind slab behind exposed ridgelines in the alpine. Cornices may be present as well.
Incremental snowfall and moderate winds from the southwest have formed shallow wind slabs in lee features at upper elevations that may be possible to trigger.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Recent moderate winds from the southwest have formed shallow wind slabs in lee features at upper elevations that may be possible to trigger.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Two weak layers may exist between 30 and 100 cm deep. Widespread avalanche activity has already occurred on the layers, but they could still be triggered anywhere they haven't already failed. Look for signs of instability and continue treating the snowpack as suspect if you are uncertain whether the layer is still present in your riding area. The rising temperatures may increase the reactivity of these layers.
Loose wet avalanches are possible through the forecast period, especially on steep solar aspects.  This problem will be amplified in the afternoon when the freezing levels rise and the sun is shining. With a solid overnight re-freeze, this problem will likely not exist in the morning. Pay close attention to warming and solar input. Moist snow is a good indication that the snowpack is heating up and destabilizing. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ccuf0","text":"Cornice failure is likely as the strong mid-March sun and warming temperatures go to work. As cornices impact underlying slopes there is potential for them to trigger persistent slab avalanches.
The recent winds have created wind slabs across exposed leeward and cross loaded terrain. Strong southwest wind and a bit of snow Thursday night into Friday may form isolated wind slabs.
You may find pockets of wind slab behind exposed ridgelines in the alpine. Cornices may be present as well.
Recent strong south winds have had ample snow to drift into reactive wind slabs on lee features at upper elevations. Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness. Triggering large wind slabs on specific features remains possible.
Wind slabs may be found on lee features, especially in the north of the region. Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness.
The storm will bring 20 to 30 cm new snow overnight and another 20 to 35 cm during the day on Friday combined with extreme southwest wind. In addition, the freezing level is forecast to rise to 1000 m during the day. The new snow will be touchy, especially where it sits on surface hoar on northerly aspects and in sheltered terrain features around treeline or a melt-freeze crust on southerly aspects and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"88a2t","text":"The extreme wind will distribute the new snow and may form wind slabs farther down slopes than expected. The wind will contribute to cornice growth.
Wind slabs may be found in steep terrain features near ridges. The wind has varied in direction, so wind slabs may be found on all aspects. The wind may pick up over the day on Tuesday, possibly forming new wind slabs in lee terrain features. Look for signs of instability and be cautious if you enter steep features.
In the north of the region, 30-50 cm of snow has been redistributed by recent strong south winds into wind slabs on lee features. Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness. Triggering large wind slabs on specific features remains possible. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":27,"style
Lingering wind slabs may remain reactive to human triggers on steep, convex slopes below ridgetops. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cbnr3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fmjk9","text":"Minimize exposure to cornices overhead when the sun is out.
Gusty winds will redistribute flurries and dry snow building slabs overnight. Expect slab size and sensitivity to increase as more snow accumulates through the day. Slabs are likely to be most reactive in wind affected areas and below ridges or lee terrain features.
Recent strong winds have had ample snow to drift into reactive wind slabs on lee features at upper elevations. Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness. Triggering large wind slabs on specific features remains possible.
Lingering wind slabs may remain reactive to human triggers on steep, convex slopes below ridgetops. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5s9qs","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7snld","text":"Minimize exposure to cornices overhead when the sun is out.
The recent storm created large wind slabs across exposed leeward and crossloaded terrain. Many size 2-3 wind slab releases have been observed in recent days. Choose routes that minimize your exposure to these looming hazards - they may remain reactive to human triggering.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"astdr","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bmnog","text":"Forecast strong winds may continue to form small but touchier new slabs with any snow still available for transport.
Expect to find potentially still reactive wind slabs to the lee of the wind (north through east slopes) and in crossloaded features if you're nearing exposed terrain. If there's still snow available for transport, elevated winds might refresh this problem on Friday, so keep it at the top of your mind. Watch for blowing snow!
A weak frontal system will form new wind slabs on north and east aspects, while old stubborn buried slabs may exist on all aspects in steep higher elevation terrain.
Two persistent weak layers exist in the snowpack:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"271l5","text":"The upper layer is buried 30 to 60 cm and primarily consists of faceted grains.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"28fmc","text":"The deeper layer is buried 60 to 100 cm and consists of surface hoar, facets, and/or a crust. The problem has been most prevalent around treeline elevations and in openings below treeline, but also reaches into the lower alpine. ","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c2fn8","text":"These layers could be triggered by riders anywhere they still exist. A warm and sunny Monday may increase the likelihood of triggering these layers.
High elevation terrain likely has new wind slabs forming as well as may still have some lingering buried wind slabs on steeper slopes.
Loose wet avalanches in steep southerly terrain should be on your radar with sunny skies and freezing levels rising to ridge top on Thursday.
A weak frontal system will form new wind slabs on north and east aspects, while old stubborn buried slabs may exist on all aspects in steep high elevation terrain.
Lingering wind slabs may remain reactive to human triggers on steep, convex slopes below ridgetops. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7bj58","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6tkp4","text":"Minimize exposure to cornices overhead when the sun is out.
Up to 15 cm overnight and another 10 to 20 cm during the day on Friday will form reactive storm slabs. Strong southwest wind will redistribute the new snow and develop wind slabs in lee terrain features in the alpine and at treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cjpaj","text":"The wind will contribute to cornice growth.
Storm slabs may develop as the day progresses. The snow may not bond well to underlying surfaces, particularly where it sits on a hard melt-freeze crust. Wind slabs have the potential to form in lee terrain features if the snow falls with elevated wind speed.
Lingering wind slabs may remain reactive to human triggers on steep, convex slopes below ridgetops. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a7u6f","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ap7eu","text":"Minimize exposure to cornices overhead when the sun is out.
Two persistent weak layers exist in the snowpack that could be triggered by riders:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"271l5","text":"The upper layer is buried 30 to 60 cm and primarily consists of weak faceted grains.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"28fmc","text":"The deeper layer is buried 60 to 100 cm and consists of surface hoar, faceted grains, and/or a hard crust.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c2fn8","text":"The most likely areas to trigger these layers is where a hard wind slab exists above the layers and where the snowpack is not capped by a thick melt-freeze crust. Rising temperatures and solar input may increase the reactivity of these two layers.
Loose wet avalanches may occur during the heat of the day and primarily on solar aspects. Watch for changing snow surfaces like moist or wet snow, snowballing or natural avalanche activity. Steep slopes and around rocks will be most susceptible to natural avalanche activity. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cei80","text":"
Lingering wind slabs may remain reactive to human triggers on steep, convex slopes below ridgetops. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1putu","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"741m","text":"Avoid exposure to cornices overhead when the sun is out.
Continued snow and southwesterly winds are forming fresh storm slabs; especially in wind affected terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fao93","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6oq96","text":"Recently formed slabs may be sitting on a weak layer of surface hoar on northerly aspects and in sheltered terrain or a crust on solar aspects and lower elevations.
Lingering wind slabs may remain reactive to human triggers on steep, convex slopes below ridgetops. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cbnr3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fmjk9","text":"Avoid exposure to cornices overhead when the sun is out.
Wind slabs are likely bonding but some could linger. The wind is forecast to pick up over the day, potentially forming new small slabs. The most likely areas to trigger a wind slab would be in steep terrain features adjacent to ridges.
Lingering wind slabs may remain reactive to human triggers on steep, convex slopes below ridgetops. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bpllp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8gdbn","text":"Avoid exposure to cornices overhead when the sun is out.
Friday's storm brought 20 cm of new snow. Another 10 to 20 cm overnight and 10 to 20 cm during the day on Saturday will continue to form reactive storm slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dhgf9","text":"Strong to extreme southwest wind will redistribute the new snow and develop wind slabs in lee terrain features in the alpine and at treeline. The strong wind may form wind slabs lower down on lee slopes. The wind will contribute to cornice growth and the additional load may lead to cornice failures.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fadsi","text":"The freezing level is forecast to rise to 1500 m during the day. The storm might keep temperatures low. However, in areas with 0 C or warmer temperatures loose wet avalanches and cornice failures may be expected.
Warm temperatures and sunshine are expected to create prime conditions for wet loose avalanches. Solar aspects will be the most likely trigger areas, but warm temperatures could potentially cause wet loose avalanches on all aspects.
Recently formed wind slabs may remain reactive to human triggering in wind loaded terrain features at upper elevations.
Heavy snowfall on Friday is expected to rapidly accumulate above 1300 m, forming a widespread reactive storm slab problem. Storm slabs may be more reactive in wind-drifted areas. The combination of wind and snow has the potential to weaken cornices, which can act as triggers on slopes below.
In the north of the region, 15-25 cm of snow on Friday is expected to rapidly accumulate above 1400 m, forming a widespread reactive storm slab problem. Storm slabs may be more reactive in wind-drifted areas. The combination of wind and snow has the potential to weaken cornices, which can act as triggers on slopes below.","type":"unstyled","depth":0,"inlineStyl
Heavy snowfall on Friday is expected to rapidly accumulate above 1300 m, forming a widespread reactive storm slab problem. Storm slabs may be more reactive in wind-drifted areas. Anticipate deteriorating conditions.
Lingering wind slabs may remain reactive to human triggers on steep, convex slopes below ridgetops. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"vlf","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"encsq","text":"Avoid exposure to cornices overhead when the sun is out.
Friday's storm brought 60+ cm new snow, especially in the southern part of the region. The storm will bring 20 to 30 cm new snow overnight and another 30 to 50 cm during the day on Saturday combined with extreme southwest wind. The new snow will be touchy, especially where it sits on surface hoar on northerly aspects and in sheltered terrain features around treeline or a melt-freeze crust on southerly aspects and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"88a2t","text":"The extreme wind will distribute the new snow and may form wind slabs farther down slopes than expected. The wind will contribute to cornice growth and the additional load might lead to cornice failures.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"emmrf","text":"In addition, the freezing level is forecast to rise to 1000 m during the night. The ongoing storm might keep temperatures low. However, in areas with 0 C or warmer temperatures loose wet avalanches and cornice failures may be expected.
Another dose of new snow and elevated southwest winds will be forming fresh wind slabs over Saturday night and Sunday.
Two persistent weak layers may be found in the snowpack:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cl7a6","text":"The upper layer is buried 30 to 50 cm and primarily consists of sugary faceted grains. ","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"renq","text":"The deeper layer is buried 60 to 100 cm. This layer consists of surface hoar, faceted grains, and/or a hard melt-freeze crust. The problem has been most prevalent around treeline and in openings below treeline, but also reaches into the lower alpine. ","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ekahd","text":"These layers could be triggered by riders anywhere they still exist. A mild, sunny Tuesday may increase the likelihood of triggering these layers.
New wind slabs may form at higher elevations due to northerly wind. This means that slabs may be found on southerly slopes, which is atypical for the region. Look for signs of instability and be cautious if you enter steep features.
Shallow wind slabs in lee features at upper elevations may still be possible to trigger.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Incremental snowfall and moderate winds from the southwest are expected to form shallow wind slabs in lee features at upper elevations that may be possible to trigger.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
50-80 cm of snow rapidly accumulated on Friday, forming a widespread reactive storm slab problem. These slabs will be more reactive in wind-drifted areas and will require time to heal.
Recent snow has formed a widespread storm slab problem at upper elevations. Storm slabs will likely be more reactive in wind-drifted areas. The combination of wind and snow has the potential to weaken cornices, which can act as triggers on slopes below.
Two layers of concern exist and have been reactive over the past week. The upper layer is down 30-50 cm and consists primarily of a sugary facet interface. The deeper layer of concern is down 60-100 cm. This layer consists of surface hoar, faceted grains, and/or a melt-freeze crust. The layer has been most problematic around treeline elevations and in openings below treeline, but also reaches into the lower alpine.
Moderate southwest winds are expected to continue and may form fresh and reactive wind slabs in leeward terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2b1mr","text":"
Recent storm snow accumulations are up to 60-100 cm in some parts of the region.  A bit more snow and wind in the forecast for Friday night and Saturday may keep these storm slabs reactive to human triggering on Saturday, especially in wind loaded areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"avso1","text":"
The recent winds have created wind slabs across exposed leeward and crossloaded terrain.
Light amounts of new snow with strong wind will likely form fresh slabs in lee terrain features at upper elevations.
New wind slabs may form on Friday as new snow and strong wind impact the region. Assess for the formation of slabs if you venture to steep, leeward terrain.
Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness.
Temperatures are forecast to stay above freezing between 1500 m and 2500 m overnight which will weaken cornices and the snowpack during the night. Cornices will become especially weak with daytime heating and the freezing level rising even higher to 2800 m during the day. Large cornice falls are a hazard of their own and can also trigger large persistent slab avalanches on the slopes below.
Recent new snow and wind has formed new wind slabs at upper elevations.
Increasing winds on Wednesday may have formed wind slabs in isolated alpine locations. Steep, convex slopes below alpine ridgetops are the most likely places to trigger these slabs.
Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness.
Potentially large loose wet avalanches are likely Saturday afternoon, especially on steep solar aspects.  This problem will be amplified in areas that received the 20+ cm of new snow Friday night.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1oq9k","text":"
Primarily southwest winds have created new wind slabs on north and east aspects. Older, buried slabs may exist on all aspects in steep high elevation terrain.
Pay attention to the pattern of wind-drifting in the terrain where you are traveling and watch for cracking or changes in snow stiffness.
Rapidly rising freezing levels and sunny skies significantly increase the likelihood of cornice failures which are hazardous on their own and can also trigger large avalanches on deeper weak layers that the weight of a single rider would not trigger.  Avoid exposure to slopes that have cornices overhead.
Recent new snow and wind has formed new wind slabs at upper elevations.
Wind slabs could be triggered by riders in steep, lee terrain features at high elevations from Saturday's snow and strong southeast wind. Carefully assess for slab properties and the bond of the snow to the underlying snowpack prior to committing yourself to consequential avalanche terrain.
Fresh snow and strong southwest wind Wednesday night into Thursday is expected to form a fresh round of storm slabs that may be touchy Thursday. Watch for wind stiffened slabs in exposed terrain and keep in mind that the new snow may be sitting on a thin crust which could allow thin slabs to run faster and further than expected.
Rapidly rising freezing levels and sunny skies significantly increase the likelihood of cornice failures which are hazardous on their own and can also trigger large avalanches on deeper weak layers that the weight of a single rider would not trigger.  Avoid exposure to slopes that have cornices overhead.
A bit of new snow and wind at upper elevations continue to build fresh thin wind slabs.
Incremental snowfall and moderate winds are expected to form shallow wind slabs in lee features at upper elevations that may be possible to trigger.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Two persistent weak layers exist in the snowpack:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"271l5","text":"The upper layer is buried 30 to 60 cm and primarily consists of faceted grains.","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"28fmc","text":"The deeper layer is buried 60 to 100 cm and consists of surface hoar, facets, and/or a crust. The problem has been most prevalent around treeline elevations and in openings below treeline, but also reaches into the lower alpine. ","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c2fn8","text":"These layers could be triggered by riders anywhere they still exist. A mild, sunny Tuesday may increase the likelihood of triggering these layers.
Fresh and reactive storm slabs are likely to be encountered, especially in wind loaded areas at upper elevations.
Slopes that face the sun will become unstable as they warm during the day.
New wind slabs may form at higher elevations due to northerly wind. This means that slabs may be found on southerly slopes, which is atypical for the region. Look for signs of instability and be cautious if you enter steep features.
Rapidly rising freezing levels and sunny skies significantly increase the likelihood of cornice failures which are hazardous on their own and can also trigger large avalanches on deeper weak layers that the weight of a single rider would not trigger.  Avoid exposure to slopes that have cornices overhead.
In the north of the region, 30-50 cm of snow has been  redistributed by strong south winds into reactive wind slabs on lee features. Watch for cracking, changes in snow stiffness, and the pattern of wind-drifting in the terrain where you are traveling. Triggering large wind slabs on specific features remains likely on Monday. ","type":"unstyled","depth":0,"inlineStyl
Rapidly rising freezing levels and sunny skies significantly increase the likelihood of cornice failures which are hazardous on their own and can also trigger large avalanches on deeper weak layers that the weight of a single rider would not trigger.  Avoid exposure to slopes that have cornices overhead.
Strong south winds have had ample snow to drift into reactive wind slabs on lee features at upper elevations. Watch for cracking, changes in snow stiffness, and the pattern of wind-drifting in the terrain where you are traveling. Triggering large wind slabs on specific features remains likely on Monday.
Strong south winds have had ample snow to drift into reactive wind slabs on lee features at upper elevations. Watch for cracking, changes in snow stiffness, and the pattern of wind-drifting in the terrain where you are traveling. Triggering large wind slabs on specific features remains likely on Monday.
The recent winds have created wind slabs across exposed leeward and crossloaded terrain.
Warm air temperature and sunshine will increase the likelihood of triggering wet loose avalanches, particularly on solar aspects. Resulting avalanches are expected to be small, so the most likely place to get into trouble is in steep, extreme terrain.
Wind slabs may be found in steep terrain features near ridges. The wind has varied in direction, so wind slabs may be found on all aspects. Be cautious if you enter steep features and look for signs of instability.
In colder drier areas -- like the Wheaton -- the entire snowpack could be in play because the weakness extends to the ground. Recent avalanche were reported to have run far through the trees. Read the snowpack section of this forecast. As you approach avalanche terrain, whumpfs are a critical sign that the snowpack is unstable & primed.
Another, weaker frontal system will add a bit to new wind slabs on north and east aspects. Older, more stubborn buried slabs may exist on all aspects in steep high elevation terrain.
Natural avalanche activity is expected to taper throughout the day as the storm eases off, but human triggered avalanches will remain likely.
Cornices begin to weaken when exposed to warm temperatures and intense sun. When they fail, they can have enough mass to be very destructive, and they can also trigger slab avalanches on the slopes below them.
Warm temperatures and sunshine are expected to create prime conditions for wet loose avalanches. Solar aspects will be the most likely trigger areas, but warm temperatures could potentially cause wet loose avalanches on all aspects, especially at lower elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6b0au","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1ofql","text":"This problem is expected to be most pronounced in the south of the region, however it is a concern in the north as well.
Warm temperatures and sunshine are expected to create prime conditions for wet loose avalanches. Solar aspects are the most likely trigger areas, but warm temperatures could potentially cause avalanches on all aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f83p2","text":"
In the north of the region, 20-30 cm of snow rapidly accumulated above 1400 m on Friday, forming a widespread reactive storm slab problem. Storm slabs may be more reactive in wind-drifted areas. The combination of wind and snow has the potential to weaken cornices, which can act as triggers on slopes below.","type":"unstyled","depth":0,"inlineStyl
Another frontal system pass over the region, forming new wind slabs on north and east aspects through Saturday night and Sunday
Another weak frontal system will continue forming new wind slabs on north and east aspects through Saturday night and Sunday.
Incremental snowfall and moderate winds from the southwest are expected to form shallow wind slabs in lee features at upper elevations that may be possible to trigger.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8srlc","text":"
Strong south winds have had ample snow to drift into reactive wind slabs on lee features at upper elevations. Watch for cracking, changes in snow stiffness, and the pattern of wind-drifting in the terrain where you are traveling. These wind slabs are likely and have the potential to be large. The combination of wind and snow may be loading cornices to their breaking point, which can trigger avalanches on slopes below.
Strong south winds have had ample snow to drift into reactive wind slabs on lee features at upper elevations. Watch for cracking, changes in snow stiffness, and the pattern of wind-drifting in the terrain where you are traveling. These wind slabs are likely and have the potential to be very large.
In the north of the region, 20-30 cm of snow has accumulated above 1400 m and is getting redistributed by strong south winds into reactive wind slabs on lee features.  Watch for cracking, changes in snow stiffness, and the pattern of wind-drifting in the terrain where you are traveling. These wind slabs are likely and have the potential to be large.  The combination of wind and snow may be loading cornices to their breaking point, which can trigger avalanches on slopes below. ","type":"unstyled","depth":0,"inlineStyl
Recent storm snow accumulations are up to 60-100 cm in some parts of the region. Storm slabs may continue to be reactive to human triggering, especially in wind loaded areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"avso1","text":"
Riders could still trigger wind slabs from recent snow and extreme southeast wind. Use particular caution in steep terrain features on the leeward side of ridgelines.
Lingering wind slabs may remain reactive to human triggers on steep, convex slopes below ridgetops.
Wind slabs may be reactive to human triggers at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2b1mr","text":"
Two persistent weak layers exist in the snowpack. The upper layer is down 30-50 cm and consists primarily of facets. The deeper layer is down 60-100 cm. This layer consists of surface hoar, facets, and/or a crust. The problem has been most prevalent around treeline and in openings below treeline, but also reaches into the lower alpine. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ekahd","text":"In areas where the snow is dry (soft or wind-affected), or where a breakable crust exists, it may still be possible to trigger a persistent slab.
Cornices are large and looming along many ridgelines and have likely grown with the recent snow and wind. They become increasingly weak when the sun comes out and freezing levels rise. They require a large berth when travelling above and below them.
Two persistent weak layers exist in the snowpack. The upper layer is down 30-60 cm and consists primarily of facets. The next layer is down 60-100 cm and consists of surface hoar, facets, and/or a crust. The problem has been most prevalent around treeline elevations and in openings below treeline, but also reaches into the lower alpine. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c2fn8","text":"In areas where the snow is dry (soft or wind-affected), or where a breakable crust exists, it may still be possible to trigger a persistent slab.
You may find pockets of wind slab behind exposed ridgelines in the alpine. Cornices may be present as well.
Two weak layers may exist between 30 and 100 cm deep. Widespread avalanche activity has already occurred on the layers, but they could still be triggered anywhere they haven't already failed. Look for signs of instability and continue treating the snowpack as suspect if you are uncertain whether the layer is still present in your riding area.
Especially in the southern half of the region where temperatures stay elevated overnight, warm temperatures and sunny skies can increase the likelihood of cornice failures. A cornice fall can be hazardous on its own. Minimize exposure to slopes that have cornices overhead, especially during the heat of the day.
You may find pockets of wind slab behind exposed ridgelines in the alpine. Cornices may be present as well.
As a storm starts impacting the region on Thursday, new snow and strong wind will likely form new wind slabs. The most likely place to find them will be in steep terrain features adjacent to ridges. Look for signs of instability and be cautious if you enter steep features.
Sun and warm daytime temperatures can quickly destabilize solar slopes and increase the likelihood of avalanches. Pinwheeling and a moist snow surface are signs that the stability of the upper snowpack is decreasing. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ehnm8","text":"Even small avalanches can be a hazard in high consequence terrain and above terrain traps.
Warm air temperature and sunshine will increase the likelihood of triggering wet loose avalanches, particularly on steep, sun-exposed slopes. Resulting avalanches are expected to mostly be small, so the most likely place to get into trouble is in extreme terrain.
New wind slabs may form on Thursday as new snow and strong wind impact the region. Assess for the formation of slabs if you venture to steep, leeward terrain.
Wind slabs are likely bonding but some could linger. The most likely areas to trigger a wind slab would be in steep terrain features adjacent to ridges.
You may find pockets of wind slab behind exposed ridgelines in the alpine. Cornices may be present as well.
As a storm starts impacting the region on Thursday, new snow and strong wind may form new wind slabs. The most likely place to find them will be in steep terrain features adjacent to ridges. Look for signs of instability and be cautious if you enter steep features.
Sun and warm daytime temperatures can quickly destabilize solar slopes and increase the likelihood of avalanches. Pinwheeling and a moist snow surface are signs that the stability of the upper snowpack is decreasing. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ceapv","text":"Even small avalanches can be a hazard in high consequence terrain and above terrain traps.
Rapidly rising freezing levels and sunny skies significantly increase the likelihood of cornice failures which are hazardous on their own and can also trigger large avalanches on deeper weak layers that the weight of a single rider would not trigger.  Avoid exposure to slopes that have cornices overhead.
The freezing level is forecast to stay at 2500 m overnight and during the day which will further weaken cornices and the snowpack. Cornices will become especially weak with daytime heating and sun exposure. Large cornice falls are a hazard of their own and can also trigger large persistent slab avalanches on the slopes below.
torm and wind slabs will build over the day as a storm impacts the region. Storm slabs will rapidly build above the rain-snow line, rain will soak the snow below, and wind slabs are expected to form in lee terrain features at treeline and alpine elevations. It will be safest to avoid avalanche terrain during periods of rapid snowfall (2-3 cm per hour) and if you find 25 cm or more new snow.
Recently formed wind slabs could be triggered by riders on Monday. The most likely terrain to find them is on leeward, steep slopes adjacent to ridges.
The storm brought up to 50 cm new snow since Thursday and another 10 to 20 cm is forecast for tonight. Storm slabs will be reactive to human traffic, especially where it sits on surface hoar on northerly aspects and in sheltered terrain features around treeline or a melt-freeze crust on southerly aspects and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dhgf9","text":"Moderate westerly wind will continue to form fresh reactive wind slabs. Strong to extreme southwest wind redistributed the new snow and developed touchy wind slabs in lee terrain features in the alpine and at treeline. The strong wind may have formed wind slabs lower down on lee slopes than expected. The wind contributed to cornice growth and the additional load may lead to cornice failures.
Up to 120 cm snow fell since Thursday, especially in the southern part of the region. The storm will bring another 10 to 20 cm new snow overnight combined with moderate to strong westerly wind. The new snow will be touchy, especially where it sits on surface hoar on northerly aspects and in sheltered terrain features around treeline or a melt-freeze crust on southerly aspects and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"88a2t","text":"Strong to extreme southwest wind has formed wind slabs during the storm which might be found farther down slopes than expected. The wind contributed to cornice growth and the additional load might lead to cornice failures.
Rapidly rising freezing levels and sunny skies significantly increase the likelihood of cornice failures which are hazardous on their own and can also trigger large avalanches on deeper weak layers that the weight of a single rider would not trigger.  Avoid exposure to slopes that have cornices overhead.
Rapidly rising freezing levels and sunny skies significantly increase the likelihood of cornice failures which are hazardous on their own and can also trigger large avalanches on deeper weak layers that the weight of a single rider would not trigger.  Avoid exposure to slopes that have cornices overhead.
Rapidly rising freezing levels and sunny skies significantly increase the likelihood of cornice failures which are hazardous on their own and can also trigger large avalanches on deeper weak layers that the weight of a single rider would not trigger.  Avoid exposure to slopes that have cornices overhead.
Southwesterly winds continue to form wind slabs that may be reactive to human triggers on lee and cross-loaded terrain in the alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9fr7e","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cbrru","text":"Recently formed slabs may be sitting on a weak layer of surface hoar on northerly aspects and in sheltered terrain or a crust on solar aspects and lower elevations.
Storm slabs may build over the day, with potentially enough snow accumulation to form large avalanches by the afternoon. The snow is forecast to fall with strong wind, which may form new wind slabs in exposed treeline and alpine terrain. Should you be in an area that receives over 25 cm of snow, it will be safest to avoid avalanche terrain.
Cornices are large and looming along many ridgelines. Cornices may weaken during daytime heating, increasing the likelihood of being naturally triggered or failing from the weight of a human.
ind slabs could linger in steep, lee terrain features at high elevations. Wind slabs aren't a concern where a thick melt-freeze crust is found on the snow surface.
Recent snow may be reactive on steep wind affected slopes.
New snow combined with wind Tuesday night and through Monday morning will build fresh reactive wind slabs in open terrain.
The recent storm brought up to 150 cm snow in the southern half of the region and about 50 cm in the north. The precipitation fell as rain below 900 m and saturated the upper snowpack. The storm snow will stay reactive while it settles, especially where it sits on surface hoar on northerly aspects and in sheltered terrain features around treeline or a melt-freeze crust on southerly aspects. Skiers and riders might be able to trigger avalanches, especially on convex rolls and unsupported slopes. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"88a2t","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3n1be","text":"Strong to extreme southwest wind will form touchy wind slabs in the alpine and at treeline where loose snow is available for transport. These slabs may be found farther down on lee slopes than expected. During the storm moderate to strong southerly wind has formed reactive wind slabs in lee terrain features. Triggered wind slabs may step down and release the entire storm snow. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9onpf","text":"The wind will contribute to cornice growth and the additional load might lead to cornice failures.
Wind slabs will form on steep lee features throughout the day on Tuesday and Wednesday as new snow accumalates.
Previously strong southwest winds have redistributed all the recent snow into widespread wind slabs.  Wind is expected to shift to the east/northeast Friday night into Saturday which will form another round of slabs. The catch is that these new slabs will form above a buried sun crust which could allow them to run faster and further than expected.
Recent snow may still be reactive on steep wind affected slopes.
Recent snow may be reactive on steep wind affected slopes.
Up to 15 cm new snow are forecast by the end of the day. In the southwest of the region where the recent storm brought 50 to 100 cm, storm slabs might remain reactive to human traffic, especially where the snow sits on surface hoar on northerly aspects and in sheltered terrain features around treeline or a melt-freeze crust on southerly aspects and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"apbms","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1lau9","text":"Moderate to strong southwest wind will redistribute loose snow where available and develop touchy wind slabs in lee terrain features in the alpine and at treeline. Recent strong wind may have formed wind slabs lower down slopes than expected. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8r36a","text":"The wind will contribute to cornice growth and the additional load may lead to cornice failures.
Riders could still trigger wind slabs from recent snow and strong southwest wind. The most likely terrain to find them is on leeward, steep slopes adjacent to ridges. Thicker and potentially touchier slabs are expected in the north of the region, where more snow accumulated.
The forecast calls for heavy snowfall combined with moderate to strong southwest wind Saturday night through Sunday. This will promote storm and wind slab formation at upper elevations.
Wind slabs could still be triggered by riders in steep, lee terrain features at high elevations. Carefully evaluate for wind slabs prior to committing to consequential avalanche terrain.
Recent convective flurries in parts of the region and light to moderate winds may have formed reactive slabs in isolated alpine locations. Steep, convex slopes below alpine ridgetops are the most likely places to trigger these slabs.
Most of the region received around 20 cm new snow during the recent storm except for the southwest of the region where new snow amounts range between 50 and 100 cm. Storm slabs will remain reactive to human traffic, especially where it sits on surface hoar on northerly aspects and in sheltered terrain features around treeline or a melt-freeze crust on southerly aspects and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dhgf9","text":"Moderate westerly wind and strong southwest wind redistributed the new snow and developed reactive wind slabs in lee terrain features in the alpine and at treeline. The strong wind may have formed wind slabs lower down on slopes than expected. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8r36a","text":"The wind contributed to cornice growth and the additional load may lead to cornice failures.
Wind slabs could still be triggerable by riders from Sunday's snow and strong to extreme southeast wind. Use particular caution in steep terrain features on the leeward side of ridgelines.
Consecutive days of warm temperatures without a solid overnight re-freeze may reactivate persistent weak layers from January and February. Widespread avalanche activity has already occurred on the layers, but they could still be triggered anywhere they haven't already failed. Look for signs of instability and continue treating the snowpack as suspect if you are uncertain whether the layer is still present in your riding area.
The recent storm brought up to 150 cm snow in the southern half of the region and about 50 cm in the north. The storm snow will stay reactive while it settles, especially where it sits on surface hoar on northerly aspects and in sheltered terrain features around treeline or a melt-freeze crust on southerly aspects. The precipitation fell as rain below 900 m and saturated the upper snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"88a2t","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3n1be","text":"Moderate to strong southerly wind has formed wind slabs during the storm which will be reactive to skiers and riders. The wind contributed to cornice growth and the additional load might lead to cornice failures.
Recent convective flurries in parts of the region and light to moderate winds may have formed reactive slabs in isolated alpine locations. Steep, convex slopes below alpine ridgetops are the most likely places to trigger these slabs.
Consecutive days of warm temperatures without a solid overnight re-freeze may reactivate persistent weak layers from January and February. Widespread avalanche activity has already occurred on the layers, but they could still be triggered anywhere they haven't already failed. Look for signs of instability and continue treating the snowpack as suspect if you are uncertain whether the layer is still present in your riding area.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"85cla","text":"
Potentially large loose wet avalanches are possible Sunday, especially on steep solar aspects.  This problem will be amplified in areas to the north that received up to 35 cm of recent snowfall.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ccuf0","text":"Cornice failure is likely this weekend as the strong mid-March sun and warming temperatures go to work.  As cornices impact underlying slopes there is potential for them to trigger persistent slab avalanches.
As we move into a period with good overnight refreeze the likelihood of triggering this problem will steadily decrease. Steep, rocky, convex terrain with a shallow or thin to thick snowpack are examples of places where triggering of these layers may remain possible.
Recent convective flurries in parts of the region, solar radiation, and light to moderate winds may have formed wind slabs in isolated alpine locations. Steep, convex slopes below alpine ridgetops are the most likely places to trigger these slabs.
Sun and warm daytime temperatures can quickly destabilize solar slopes and increase the likelihood of avalanches. Things will deteriorate even faster if we don't get a good overnight re-freeze. Pinwheeling and a moist snow surface are signs that the stability of the upper snowpack is decreasing. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ehnm8","text":"Even small avalanches can be a hazard in high consequence terrain and above terrain traps, and wet loose avalanches may trigger slabs where persistent layers still linger.
nowfall is most likely at alpine and treeline elevations whereas rain may dominate for much of below treeline terrain. Wind slabs are expected to rapidly form as the snow falls with strong south wind. Use caution if you venture into lee terrain features at high elevations. In sheltered areas above the rain-snow line, there is potential for storm slabs to also build over the day, so use caution if you find around 10 cm or more of snow accumulation.
Increasing winds on Thursday accompanied by 5-10 cm of new snow may form wind slabs in isolated alpine locations. Steep, convex slopes below alpine ridgetops are the most likely places to trigger these slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dj9km","text":"If the sun pokes out it may have enough punch to initiate the recent snow as loose wet or dry avalanches from steep terrain features.
New wind slabs may form on Friday as new snow and strong wind impact the region. Assess for the formation of slabs if you venture to steep, leeward terrain.
Sun and warm daytime temperatures can quickly destabilize solar slopes and increase the likelihood of avalanches. Things will deteriorate even faster if we don't get a good overnight re-freeze. Pinwheeling and a moist snow surface are signs that the stability of the upper snowpack is decreasing. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ceapv","text":"Even small avalanches can be a hazard in high consequence terrain and above terrain traps, and wet loose avalanches may trigger slabs where persistent layers still linger.
Cornices are large and looming along many ridgelines, and have likely grown with the recent wind.
Watch for fresh sensitive wind slabs on all aspects as wind has been all over the map as of late. On Thursday wind was from the southwest.  A bit of east/northeast wind crept in Friday night. Strong north wind blew on Saturday and northwest wind is expected on Sunday.
Riders could still trigger wind slabs from recent snow and strong southwest wind. The most likely terrain to find them is on leeward, steep slopes adjacent to ridges. Thicker and potentially touchier slabs are expected in the north of the region, where more snow accumulated.
round 10 to 20 cm of snow fell above around 1200 m on Sunday, forming storm slabs in sheltered terrain and wind slabs in exposed lee features. These slabs may still be reactive to riders on Monday. Below 1200 m, expect to find wet snow or hard melt-freeze crust.
Southwesterly winds continue to form wind slabs that may be reactive to human triggers on lee and cross-loaded terrain in the alpine. Keep your guard up on steep sheltered slopes where recent accumulations may overlie a weak layer of surface hoar on north aspects or a crust on solar aspects.
Slopes that face the sun will become unstable as they warm during the day.
Convective flurries and southwesterly winds on Sunday may form small wind slabs sitting on slippery crusts on lee features below alpine ridgetops.
Recent snow may still be reactive to riders, particularly on steep wind affected slopes. Carefully assess for wind slabs prior to committing to steep features with high consequence.
Loose wet avalanches are possible through the forecast period, especially on steep solar aspects.  This problem will be amplified in the afternoon when the freezing levels rise and the sun is shining. With a solid overnight re-freeze, this problem will likely not exist in the morning. Pay close attention to warming and solar input. Moist snow is a good indication that the snowpack is heating up and destabilizing. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ccuf0","text":"Cornice failure is likely as the strong mid-March sun and warming temperatures go to work. As cornices impact underlying slopes there is potential for them to trigger persistent slab avalanches.
Storm slabs will build overnight Monday through Wednesday. Watch for fresh sensitive slabs on all aspects. Reactive and deeper wind slabs may exist on leeward slopes as the strong southwest wind transports the new snow.
Riders could still trigger wind slabs from recent snow and extreme southeast wind. There's been reports of large avalanches triggered by riders and cornices in the past week, so use particular caution in committing terrain with high consequences.
Recent snow has likely been blown into wind slabs at higher elevations. Carefully assess for wind slabs prior to committing to steep features with high consequence.
Storm slabs are most likely to be reactive:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4q00r","text":"- at elevations with dry snow experiencing rapid warming for the first time (1700-2000m)","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"v0fk","text":"- on dry southerly aspects seeing strong sun for the first time","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"clg4t","text":"- in freshly wind loaded terrain features at upper elevations
New snow and wind in the afternoon on Sunday will begin to form fresh wind slabs in lee terrain. Carefully assess for wind slabs prior to committing to steep features with high consequence.
The forecast calls for snowfall combined with moderate to strong southwest wind Saturday night through Sunday. This will promote storm and wind slab formation at upper elevations.
New wind slabs are expected to form from fresh snow and strong southerly wind. Use caution in lee terrain features near ridgelines. Should you find around 10 cm or more accumulation in your riding area, storm slabs could also be triggered in steep, sheltered terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3suj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e3p7u","text":"Note that there's been reports of large avalanches triggered by riders and cornices in the past week, so use particular caution in committing terrain with high consequences.
Where cornices exist they pose a threat both from the potential to collapse under your feet (or machine) and from the potential to send large chunks of snow far down a slope. If anything can trigger the more stubborn persistent weak layers it's a large falling cornice. They are most likely to fail during the heat of the day.
Warm temperatures and sunny skies can increase the likelihood of cornice failures. Recently a cornice fall triggered a very- large slab avalanche from the slope below. These events are fairly unpredictable so the best way to mitigate the risk is to minimize your exposure, especially during the heat of the day.
Watch for wind loaded pockets in lee terrain features such as beneath ridge crests and roll-overs.
New snow and wind continue to build touchy storm slabs. Their size and sensitivity to triggering will increase throughout the day. Natural avalanches will be very likely in the alpine and on steep wind loaded slopes at treeline.
Lingering wind slabs may remain reactive to human triggers. Use caution when transitioning into wind affected terrain.
Lingering wind slabs may remain reactive to human triggers. Use caution when transitioning into wind affected terrain.
More snowfall and elevated southerly winds will continue forming fresh wind slabs on Thursday. Wind slabs are the main issue, but keep your guard up outside of exposed terrain. Recent accumulations may be sitting on a weak layer of surface hoar on sheltered northerly aspects or a crust on solar aspects and lower elevations.
Sun and warm daytime temperatures can quickly destabilize the upper snowpack and increase the likelihood of wet loose avalanches. Pinwheeling and moist surface snow are strong signs of this kind of instability. Even small avalanches can be a hazard in high consequence terrain and above terrain traps.
Southwesterly winds continue to form wind slabs that may be reactive to human triggers on lee and cross-loaded terrain in the alpine. Keep your guard up at lower elevations where recent accumulations may overlie a weak layer of surface hoar on sheltered north aspects or a crust on solar aspects.
Sun and warm daytime temperatures can quickly destabilize the upper snowpack and increase the likelihood of wet loose avalanches. Pinwheeling and moist surface snow are strong signs of this kind of instability. Even small avalanches can be a hazard in high consequence terrain and above terrain traps.
Especially in the southern half of the region where temperatures stay elevated overnight, warm temperatures and sunny skies can increase the likelihood of cornice failures. A cornice fall can be hazardous on its own. Minimize exposure to slopes that have cornices overhead, especially during the heat of the day.
0-50 cm of recent snow or more has likely formed storm slabs on steep and wind loaded slopes. While these slabs are expected to strengthen quickly, they are likely to be reactive to human triggering on Saturday.
While the upper snowpack is generally strong, slab avalanches are still possible on some steep terrain features. The most likely spot to find reactive slabs is where there has been recent wind loading in lee terrain. There are also some surface hoar and crust layers in the top 60 cm of the snowpack, and while none of these layers are overly concerning, they may act as sliding layers.
Southwesterly winds have formed wind slabs on lee and cross-loaded features below alpine ridgetops. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3uu66","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ege53","text":" Large cornices are present throughout the region and are capable of triggering large avalanches when they fail. Cornice failures are most common during windy or warm weather.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"buduc","text":"
Light amounts of snow and strong southwest winds continue to from fresh wind slabs on lee and cross-loaded features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"auc4e","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f1v6q","text":" Wind slabs formed from previous north winds may still be reactive to human triggers where they are sitting on persistent weak layers.
A bit more snow and a lot more wind is likely to continue forming fresh wind slabs over more stubborn older slabs on Friday. Although wind slabs are the main issue, keep your guard up in steep sheltered terrain. Recent accumulations may be sitting on a weak layer of surface hoar on north aspects or a crust on solar aspects and lower elevations.
Increasing winds on Friday accompanied by new snow may form wind slabs in isolated alpine locations. Steep, convex slopes below alpine ridgetops are the most likely places to trigger these slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dj9km","text":"If the sun pokes out it may have enough punch to initiate the recent snow as loose wet or dry avalanches from steep terrain features.
Increasing winds on Friday accompanied by 5-10 cm of new snow may form wind slabs in isolated alpine locations. Steep, convex slopes below alpine ridgetops are the most likely places to trigger these slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bc5hj","text":"If the sun pokes out it may have enough punch to initiate the recent snow as loose wet or dry avalanches from steep terrain features.
Where cornices exist they pose a threat both from the potential to collapse under your feet (or machine) and from the potential to send large chunks of snow far down a slope. If anything can trigger the more stubborn persistent weak layers it's a large falling cornice. They are most likely to fail during intense periods of solar radiation. Cornice failures are very unpredicatble.
Watch for wind loaded pockets in lee terrain features such as beneath ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6lbt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1itbj","text":"Cornices are large, looming and need to be given their space from above and below.
Storm slabs may remain reactive to human triggers in wind loaded terrain features.
Although the storm will ease on Saturday morning, there will be 30-50 cm of fresh snow and ongoing wind loading, leaving slabs primed for human triggering.
Continual flurries and moderate to strong southwest wind will likely form wind slabs at upper elevations. Assess for the formation of slabs if you venture to steep, leeward terrain.
ew snow will form reactive slabs in areas that receive more than 20 cm of new snow, which is most likely at higher elevations and in lee terrain (north and east facing).
New snow will form reactive slabs in areas that receive more than 20 cm of new snow, which is most likely at higher elevations and in lee terrain (north and east facing slopes).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"285o9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e3p7u","text":"Note that there's been reports of large avalanches triggered by riders and cornices in the past week, so use additional caution in committing terrain with high consequences.
Increasing winds on Friday accompanied by 5-10 cm of new snow may form wind slabs in isolated alpine locations. Steep, convex slopes below alpine ridgetops are the most likely places to trigger these slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"in7a","text":"If the sun pokes out it may have enough punch to initiate the recent snow as loose wet or dry avalanches from steep terrain features.
The best riding conditions and the highest hazard will overlap this weekend.  High elevation north, northeast and east facing slopes may have a thin layer of surface hoar in place and continued southwest winds are expected to build fresh slabs above this surface hoar. Carefully assess your line for touchy wind slabs before committing.  This problem is expected to increase in sensitivity over the next few days as new snow and wind continue to build the slab.  Steep, convex slopes below alpine ridge tops are the most likely places to trigger these slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"in7a","text":"If the sun pokes out it may have enough punch to initiate the recent snow as loose wet or dry avalanches from steep terrain features.
50+ cm of new snow is settling into widespread storm slabs in the west of the region, with about half this amount in shallower parts of the eastern slope. Snow that reacted in dry loose sluffs on Wednesday may react as a touchier slab on Thursday and beyond, particularly where wind loading has occurred.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4ru0s","text":"Expect warm new snow in steep lower elevations to shed easily in loose moist sluffs with the heat of the day.
Cornices are large and looming along many ridgelines. They are capable of triggering large avalanches when they fail.
Watch for wind slabs in lees of ridge crests and roll-overs at upper elevations.
The best riding conditions and the highest hazard will overlap this weekend.  High elevation north, northeast and east facing slopes may have a thin layer of surface hoar in place and continued southwest winds are expected to build fresh slabs above this surface hoar. Carefully assess your line for touchy wind slabs before committing.  This problem is expected to increase in sensitivity over the next few days as new snow and wind continue to build the slab.  Steep, convex slopes below alpine ridge tops are the most likely places to trigger these slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dj9km","text":"If the sun pokes out it may have enough punch to initiate the recent snow as loose wet or dry avalanches from steep terrain features.
A bit more snow and shifting wind are likely to continue forming fresh wind slabs over more stubborn older slabs on Saturday. Although new wind slabs are the main issue, keep your guard up in steep sheltered terrain. Recent accumulations may be sitting on a weak layer of surface hoar on north aspects or a crust on solar aspects and lower elevations.
Light new snow and shifting winds will likely continue to form wind slabs that may be reactive to human triggers on lee and cross-loaded terrain in the alpine. Keep your guard up on steep, sheltered, north-facing slopes where recent accumulations may overlie a weak layer of surface hoar.
Recent snow may be reactive on steep wind affected slopes.
ew storm slabs will rapidly grow with 20-35 cm of new snow expected to fall by Sunday evening. Human triggered avalanches will be concern on steep or wind affected slopes.
Moderate snowfall and high winds will form unstable new slabs to manage on Sunday, with distribution that will likely vary by location in the region. Expect thicker, more widespread storm slab formation in the snowier west of the region and potentially more limited wind slab distribution closer to Smithers. Potential may exist for larger, more destructive step-down avalanches to occur in sheltered, north-facing slopes where buried surface hoar could still be preserved.
The best riding conditions and the highest hazard will overlap this weekend.  High elevation north, northeast and east facing slopes may have a thin layer of surface hoar in place and continued southwest winds are expected to build fresh slabs above this surface hoar. Carefully assess your line for touchy wind slabs before committing.  This problem is expected to increase in sensitivity over the next few days as new snow and wind continue to build the slab.  Steep, convex slopes below alpine ridge tops are the most likely places to trigger these slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cj3v7","text":"If the sun pokes out it may have enough punch to initiate the recent snow as loose wet or dry avalanches from steep terrain features.
A shift back to elevated southwest winds and incoming new snow is likely to form small new wind slabs over those formed recently by northerly winds. Expect to find a mix of reactive new slabs and more stubborn older ones over a wide range of aspects as you approach exposed terrain.
The spring sun and rising freezing levels can pack a punch quickly and initiate loose wet avalanches on all aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3bpg7","text":"Watch for signs of instability like natural avalanche activity, wet or moist snow surfaces, and snowballing, especially on solar aspects.
New snow from the weekend  has likely been redistributed into wind slabs on a variety of aspects.
Cornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind.
Modest amounts of new snow and shifting winds may form wind slabs on a variety of aspects below alpine ridgetops. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3uu66","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ege53","text":" Large cornices are present throughout the region and are capable of triggering large avalanches when they fail. Cornice failures are most common during windy or warm weather.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"buduc","text":"
Recent snow and strong southwest winds continue to from fresh wind slabs on lee and cross-loaded features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"auc4e","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f1v6q","text":" Wind slabs formed from previous north winds may still be reactive to human triggers where they are sitting on persistent weak layers.
Human triggered slabs are possible at upper elevations where there is 15-35 cm of storm snow. Pay attention to changes in new snow depth as you gain elevation, and be extra cautions on wind loaded slopes.
Where cornices exist they pose a threat both from the potential to collapse under your feet (or machine) and from the potential to send large chunks of snow far down a slope. If anything can trigger the more stubborn persistent weak layers it's a large falling cornice. They are most likely to fail during intense periods of solar radiation. Cornice failures are very unpredicatble.
Continual flurries and moderate to strong southwest wind will likely form wind slabs at upper elevations. Assess for the formation of slabs if you venture to steep, leeward terrain.
Fresh and reactive wind slabs are expected to build throughout the day with new snow and strong wind.
Forecast heavy snowfall and extreme winds will bring a spike in avalanche danger for Sunday. Expect to find touchy new slabs that increase in depth and reactivity over the day at all elevations, but especially up high. Potential may exist for large avalanches to step down to a deeper weak layer to create very large and destructive avalanches.
Strong wind may form new wind slabs on Tuesday, blowing around the 20 cm of recent soft snow. The most likely place to trigger them would be in steep leeward or cross-loaded terrain. These shallower slabs will sit on hard wind slabs in exposed terrain, which are old and unlikely to be triggered.
Southwest winds and new snow have formed wind slabs in lee terrain features. This problem may increase in sensitivity over as new snow and wind continue to build the slab. Steep, convex slopes below alpine ridge tops are the most likely places to trigger these slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"csei3","text":"
New storm slabs will grow throughout the day, with human triggered avalanches likely on steep and wind affected slopes once sufficient snow accumulates.
Slabs will become increasingly reactive as snowfall accumulates. The deepest and most reactive deposits will be in areas affected by wind - expect to find touchier slabs around ridges and in lee features.
As southwesterly winds redistribute loose snow, the best riding conditions will overlap with the highest avalanche hazard. High elevation north, northeast and east facing slopes may have a thin layer of surface hoar in place and continued southwest winds are expected to build fresh slabs above this surface hoar. Carefully assess your line for touchy wind slabs before committing. This problem is expected to increase in sensitivity as new snow and wind continue to build the slab. Steep, convex slopes below alpine ridge tops are the most likely places to trigger these slabs.
As southwesterly winds redistribute loose snow, the best riding conditions will overlap with the highest avalanche hazard. High elevation north, northeast and east facing slopes may have a thin layer of surface hoar in place and continued southwest winds are expected to build fresh slabs above this surface hoar. Carefully assess your line for touchy wind slabs before committing. This problem is expected to increase in sensitivity as new snow and wind continue to build the slab. Steep, convex slopes below alpine ridge tops are the most likely places to trigger these slabs.
Heaps of new snow and high winds have formed a widespread new storm slab problem that's likely to increase in severity with elevation. Remain cautious if you're noting a generally good bond forming with the old surface, this bond may not be uniform and wind loaded areas are likely primed for human triggered avalanches.
New snow and elevated southwest winds have formed new surface instabilities that vary by location in the region. Expect thicker, more widespread storm slab formation in the snowier southwest of the region and wind slabs more confined to leeward terrain at exposed elevations closer to Smithers.
The weekend's snow may be settling into storm slabs that could be triggered by riders. New slabs are also likely to form on Wednesday during a strong storm. Assess for slab properties during your travels and use particular caution in steep, committing terrain with high consequences. Note that wind slabs are also likely find in exposed terrain from storm snow being blown into lee terrain features from strong southwest wind.
On Monday there could be sufficient snow to form wind slabs on some steep open slopes due to the combination of localized flurries and gusty southwest wind.
0-50 cm of snow from Sunday's storm will leave storm slabs on steep and wind loaded slopes. While these slabs are expected to strengthen quickly, they will likely remain reactive to human triggering on Monday.
Recent storm totals will have reached 20-40 cm by Monday morning, which means there is potential for storm slabs on steep open slopes, however the most likely place to trigger an avalanche will be on wind loaded slopes at upper elevations.
40-60 cm of recent snow has potential to form unstable slabs on some steep terrain features. The most likely spot to find reactive slabs is where there has been additional wind loading in lee terrain. There are also some surface hoar and crust layers in the top 60 cm of the snowpack, and while none of these layers are overly concerning, they may act as sliding layers in some isolated areas.
Storm slabs will likely be reactive to human triggering on steep and wind loaded slopes. Give the snow time to strengthen before pushing into consequential avalanche terrain. Strong wind from variable directions will mean that slabs could be particularly touchy on all aspects in wind-exposed terrain.
Watch for blowing snow and where it is being deposited - this will tell you where wind slabs are freshest and most reactive. You can also look for signs of instability like cracking in lee terrain features.
ind slabs formed with recent snowfall may continue to be reactive to riders. The reactivity of slabs should be assessed before approaching steep open terrain, especially where exposed to the wind.
Storm slabs will likely remain reactive in areas of ongoing wind loading and will be especially sensitive to triggering when exposed to direct sun for the first time.
Steady wind from the southwest and northwest has left some unstable slabs on steep alpine slopes.
Recent southwest winds and new snow have formed wind slabs in lee terrain features. Winds are expected to transition to a west-northwesterly flow, which may encourage \"reverse loading\" building fresh wind slabs on more south and easterly slopes. Steep, convex slopes below alpine ridge tops are the most likely places to trigger these slabs.
Recent snow may still be reactive to riders, particularly on steep wind affected slopes. Carefully assess for wind slabs prior to committing to steep features with high consequence.
Up to 40 cm fell in the region over the weekend, bringing total recent snowfall amounts to around 100 cm. Recent and ongoing winds may continue to form fresh, and potentially reactive wind slabs. Variable wind direction means that wind slabs may be found on many aspects.
30-60 cm ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9a56u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7d75s","text":"Upper elevations may accumulate upwards of 15 cm overnight with gusty winds and another 10-15 through Wednesday. The touchiest deposits will be around ridges and areas loaded by wind. Be mindful that the slab could increase in reactivity through the day as temperatures warm or with solar input.
Recent snow has likely been blown into wind slabs at higher elevations. Carefully assess for wind slabs prior to committing to steep features with high consequence.
torm and wind slabs formed on Tuesday may continue to be reactive to riders. The reactivity of slabs should be assessed before approaching steep open terrain, especially where exposed to the wind.
Steady wind from the southwest and northwest has likely left some unstable slabs on steep alpine slopes.
New snow and southwest wind will likely form touchy new wind slabs over Friday night and possibly into Saturday. Winds are expected to shift north in the Saturday evening to complicate slab distribution. Increase caution and identify leeward slopes likely to hold new slabs if you're entering exposed terrain.
Wind slabs may be found on all aspects up high due to strong wind from variable directions.
Recent southwest winds and new snow have formed wind slabs in lee terrain features. Winds are expected to transition to a west-northwesterly flow, which may encourage \"reverse loading\" building fresh wind slabs on more south and easterly slopes. Carefully assess your line for touchy wind slabs before committing. Steep, convex slopes below alpine ridge tops are the most likely places to trigger these slabs.
Recent southwest winds and new snow have formed wind slabs in lee terrain features. Winds are expected to transition to a west-northwesterly flow, which may encourage \"reverse loading\" building fresh wind slabs on more south and easterly slopes. Carefully assess your line for touchy wind slabs before committing. Steep, convex slopes below alpine ridge tops are the most likely places to trigger these slabs.
Recent southwest winds and new snow have formed wind slabs in lee terrain features. Winds are expected to transition to a west-northwesterly flow, which may encourage \"reverse loading\" building fresh wind slabs on more south and easterly slopes. Carefully assess your line for touchy wind slabs before committing. Steep, convex slopes below alpine ridge tops are the most likely places to trigger these slabs.
Recent southwest winds and fresh snow formed wind slabs in lee terrain features. Now in a west-northwesterly flow, winds may \"reverse load\" slopes, building fresh wind slabs on more south and easterly aspects. Steep, convex slopes below ridges are the most likely places to trigger these slabs.
Gusty winds will impact dry snow building slabs in lee features. Slabs are likely to be most reactive in areas below ridges or lee terrain features.
Recent southwest winds and fresh snow formed wind slabs in lee terrain features. Now in a west-northwesterly flow, winds may \"reverse load\" slopes, building fresh wind slabs on more south and easterly aspects. Carefully assess your line for wind slabs before committing. Steep, convex slopes below ridges are the most likely places to trigger these slabs.
Gusty winds will impact dry snow building slabs in lee features. Slabs are likely to be most reactive in areas below ridges or lee terrain features.
Watch for wind loaded pockets in lee terrain features such as beneath ridge crests and roll-overs.
Recent snow may be reactive on steep wind affected slopes.
Watch for wind loaded pockets in lee terrain features such as beneath ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6lbt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1itbj","text":"Cornices are large, looming and need to be given their space from above and below.
30-50 cm of recent snowfall has potential to form reactive slabs on some steep terrain features. The most likely spot to find reactive slabs is where there has been additional wind loading in lee terrain. There are also some surface hoar and crust layers in the upper snowpack, and while none of these layers are overly concerning, they may act as sliding layers for storm slabs.
Deep pockets of wind loaded snow may remain sensitive to human triggering in lee terrain features such as beneath ridge crests and roll-overs.
ecent snow is strengthening, but the reactivity of storm slabs should still be assessed before approaching steep open terrain. North and east facing slopes are most suspect due to gusty winds from the south and west.
40-60 cm of recent snowfall has potential to form reactive slabs on some steep terrain features. The most likely spot to find reactive slabs is where there has been additional wind loading in lee terrain. There are also some surface hoar and crust layers in the upper snowpack, and while none of these layers are overly concerning, they may act as sliding layers for storm slabs.
Recent snow has likely been blown into wind slabs at higher elevations. Carefully assess for wind slabs prior to committing to steep features with high consequence.
While the upper snowpack is generally strong, slab avalanches are still possible on some steep terrain features. The most likely spot to find reactive slabs is in lee terrain features where there has been recent wind loading. There are also some surface hoar and crust layers in the top 50 cm of the snowpack, and while none of these layers are overly concerning, they may act as sliding layers.
Recent snow may still be reactive to riders, particularly on steep wind affected slopes. Carefully assess for wind slabs prior to committing to steep features with high consequence.
Wind slabs are likely to be stubborn to trigger during this cold snap. The most likely place to trigger them would be in steep leeward or cross-loaded terrain.
New wind slabs are expected to form as strong southwest wind blows around recent snow. You are most likely to find them in steep leeward terrain features adjacent to ridges in wind-exposed terrain at higher elevations.
Any steep slope has the potential for storm slab avalanches on after 30-60 cm of snow fell on Wednesday. This snow has likely formed unstable slabs on wind loaded slopes at higher elevations. In steep sheltered terrain this snow may either result in dry loose or storm slab avalanches.
Wind slabs may be found on all aspects up high due to strong wind from variable directions.
Watch for wind-loaded pockets in lee terrain features such as beneath ridge crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6lbt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1itbj","text":"Cornices are large and need to be given space from above and below.
oose wet avalanches in steep southerly terrain should be on your radar with sunny skies and freezing levels rising to ridge top on Wednesday. A natural cycle is likely with spring sun hitting fresh storm snow for the first time.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"36gos","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1p9kp","text":"Leave slopes before they get moist and avoid overhead hazards like cornices and avalanche paths in the heat of the day.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cbreg","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dvssg","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8mr77","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9fqsc","text":"
Watch for wind loaded pockets in lee terrain features such as beneath ridge crests and roll-overs.
Touchy slabs will likely form at elevations above 1500 m on Saturday. Their size and likelihood will increase throughout the day as 15-30 cm of snow is expected with strong southwest wind. Natural avalanches will be likely in the alpine and on steep wind loaded slopes at treeline.
Natural avalanches are expected to be widespread with the arrival of the forecast weather.
New snow and elevated southwest winds have formed new surface instabilities that vary by location in the region. Expect thicker, more widespread storm slab formation in the snowier southwest of the region and wind slabs more confined to leeward terrain at exposed elevations closer to Smithers.
ecent snow and wind will renew storm and wind slabs at upper elevations. The reactivity of storm slabs should assessed before approaching steep open terrain especially where exposed to the wind.
Strong westerly wind forecast overnight will likely transport recent snow into fresh, reactive wind slabs at upper elevations. Watch for wind loaded pockets in lee terrain features such as beneath ridge crests and roll-overs.
Heavy snowfall and strong winds have formed a widespread new storm slab problem that's likely to increase in severity with elevation. Remain cautious if you're noting a generally good bond forming with the old surface, this bond may not be uniform and wind loaded areas are likely primed for human triggered avalanches.
New snow and elevated southwest winds have formed new surface instabilities that vary by location in the region. Expect thicker, more widespread storm slab formation in the snowier southwest of the region and wind slabs more confined to leeward terrain at exposed elevations closer to Smithers.
New snow and strong winds have formed a widespread new storm slab problem that's likely to increase in severity with elevation. Remain cautious if you're noting a generally good bond forming with the old surface, this bond may not be uniform and wind loaded areas are likely primed for human triggered avalanches.
30-50 cm of recent snowfall has potential to form unstable slabs on some steep terrain features. The most likely spot to find reactive slabs is where there has been additional wind loading in lee terrain. There are also some surface hoar and crust layers in the top 50 cm of the snowpack, and while none of these layers are overly concerning, they may act as sliding layers.
Lingering wind slabs may be found on all aspects up high due to strong wind from variable directions.
he forecast calls for heavy snowfall combined with moderate to strong southwest wind Saturday night through Sunday. This will promote storm slab formation at upper elevations.
oose wet avalanches in steep southerly terrain should be on your radar with sunny skies and freezing levels rising to ridge top on Thursday again.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dvssg","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8mr77","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9fqsc","text":"
Changing wind from southwest to northwest has added complexity to the snow loading pattern. You may find reactive wind slabs on unsuspecting slopes and on a variety of aspects, especially where the slab sits above a crust or feathery surface hoar crystals that were possibly buried on high northerly, wind-sheltered slopes. .
10-15 cm of recent new snow has likely been redistributed into wind slabs on a variety of aspects due to recent strong winds blowing from a variety of directions.
40-60 cm of fresh snow accompanied by strong wind have formed new wind slabs in exposed lee terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"i745","text":"
Storm slabs are most likely to remain reactive in wind loaded terrain features. Wind direction has varied from southwest to northwest so watch for these deep pockets on a variety of aspects.
Reactive storm slabs are expected at upper elevations, especially in wind-loaded areas where fresh wind slabs may be the primary concern. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"75e5j","text":"Loose-dry avalanches may occur from steeper terrain features.
More recent wind slabs could be reactive in wind loaded terrain features at upper elevations on Friday. Light new snow in the forecast may add to this problem, forming small new slabs and obscuring recent ones.
Fresh wind slabs may be especially reactive where they sit over a crust on solar aspects.
Touchy slabs are likely forming at elevations above 1500 m. Their size and likelihood will increase throughout the day as 15-30 cm of snow is expected with strong southwest wind. Natural avalanches will be very likely in the alpine and on steep wind loaded slopes at treeline.
Fresh storm slabs are forming at elevations above 1500 m. Their size and likelihood will increase throughout the day as new snow falls with strong southwest wind. Natural avalanches will be very likely in the alpine and on steep wind loaded slopes at treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"26ps7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"28uvl","text":"There are also some surface hoar and crust layers in the top 50 cm of the snowpack, and while none of these layers are overly concerning, they may act as sliding layers.
Fresh storm slabs are expected to become increasingly reactive throughout the day, especially in wind loaded terrain.
Storm slabs are most likely to remain reactive in wind loaded terrain features. Wind direction has varied from southwest to northwest so watch for these deep pockets on a variety of aspects.
Sunshine may trigger wet loose avalanches on steep solar aspects.
Up to 35 cm of new snow and strong to extreme winds will quickly form a widespread new storm slab problem for Saturday. Manage the rising danger by sticking to simple, low angle, low consequence slopes and avoiding overhead hazard.  A natural avalanche cycle is expected by the end of the day.
Cornices are large and looming along many ridgelines and have likely grown with the recent snow and wind. They become increasingly weak when the sun comes out and freezing levels rise. They require a large berth when travelling above and below them.
Reactive storm slabs are expected at upper elevations, especially in wind loaded areas. A change in wind direction on Monday means that wind loading may be found on many aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ak7ur","text":"With so much new snow, keep in mind that short periods of direct sun could trigger natural avalanches.
Fresh and reactive storm slabs are likely to be encountered, especially in wind loaded areas at upper elevations. A change in wind direction on Monday means that wind loading may be found on many aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"52tnr","text":"Keep in mind that brief periods of sun can initiate natural avalanches, especially in areas that saw high snowfall amounts on the weekend.
0-40 cm of fresh snow has formed widespread storm slabs at upper elevations. These are expected to remain reactive to human triggering on Monday, especially in wind loaded areas. A change in wind direction on Monday means that wind loading may be found on many aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9mcjo","text":"With so much new snow, even brief periods of sun can trigger natural avalanches.
Winds will shift north Saturday evening to complicate the distribution of small new wind slabs. Identify leeward slopes likely to hold new slabs if you're entering exposed terrain. Increase caution and carefully scrutinize large old hard wind slabs in high alpine features before committing to lines in bigger terrain.
A widespread new storm slab problem is expected to form in the region as 2-day storm totals of up to 70 cm materialize by the end of the day Sunday. Manage the rising danger by sticking to simple, low angle, low consequence slopes and avoiding overhead hazard.
Recent fresh snow and strong winds have formed widespread storm slabs that are likely still easy to trigger, especially in wind loaded areas. A change in wind direction on Monday means that wind loading may be found on many aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1memq","text":"With all of this new snow, even brief periods of sun can quickly trigger natural avalanches.
New snow through Sunday night and shifting winds on Saturday are likely to form a reactive new wind slab problem in exposed areas. Investigate the bond of the new snow in sheltered areas to ensure a more widespread storm slab problem isn't in play. This is more likely in the higher snowfall south of the region.
New snow through Sunday night and shifting winds on Saturday are likely to form a reactive new wind slab problem in exposed areas. Investigate the bond of the new snow in sheltered areas to ensure a more widespread storm slab problem isn't in play.
Wind slabs could be triggered by riders in steep, lee terrain features at high elevations from Saturday's snow and strong southeast wind. Carefully assess for slab properties and the bond of the snow to the underlying snowpack prior to committing yourself to consequential avalanche terrain.
Reactive storm slabs may be encountered, especially in wind-loaded areas at upper elevations. A change in wind direction means that wind loading may be found on many aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"52tnr","text":"Keep in mind that brief periods of sun can initiate natural avalanches, especially in areas that saw high snowfall amounts.
Recently formed wind slabs may remain reactive to human triggering in wind loaded terrain features at upper elevations.
Wind slabs may be found on a variety of aspects due to recent variable wind direction. Fresh wind slabs are expected to form on Tuesday and Wednesday with new snow.
More recent wind slabs could be reactive in wind loaded terrain features at upper elevations on Friday.
With recent loading and continued wind, storm slabs are expected to stay reactive throughout the day, especially in wind loaded terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d4urc","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5mkbp","text":"Monitor the bond of the new snow to old surfaces before committing to any terrain with consequences.
et loose avalanches will become increasingly likely throughout the day on steep solar aspects at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dvssg","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8mr77","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9fqsc","text":"
Cornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind.
Human triggered storm slab avalanches are likely on Monday. Storm slabs will likely be most sensitive to triggering in wind loaded terrain features. Wind direction has varied from southwest to northwest so watch for these deep, reactive pockets on a variety of aspects.
With recent loading and continued wind, storm slabs are expected to stay reactive throughout the day, especially in wind loaded terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1quj0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6nq2i","text":"Monitor the bond of the new snow to old surfaces before committing to any terrain with consequences.
40-60 cm of fresh snow accompanied by strong wind have formed widespread storm slabs that are likely still easy to trigger, especially in wind-loaded areas. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"i745","text":"With all of this new snow, even brief periods of sun can quickly trigger natural avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dnkrf","text":"
10-15 cm of recent new snow has likely been redistributed into wind slabs on a variety of aspects due to recent variable wind direction.
Reactive storm slabs are expected at upper elevations, especially in wind loaded areas where fresh wind slabs may be the primary concern. A change in wind direction means that wind loading may be found on many aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ak7ur","text":"With so much new snow, keep in mind that short periods of direct sun could trigger natural avalanches.
0-40 cm of fresh snow has formed widespread storm slabs at upper elevations. These are expected to remain reactive to human triggering on Tuesday, especially in wind loaded areas. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9mcjo","text":"With so much new snow, even brief periods of sun can trigger natural avalanches.
Recent fresh snow and strong winds have formed widespread storm slabs that are likely still easy to trigger, especially in wind loaded areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1memq","text":"With all of this new snow, even brief periods of sun can quickly trigger natural avalanches.
Fresh and reactive storm slabs are likely to be encountered, especially in wind-loaded areas at upper elevations. A change in wind direction means that wind loading may be found on many aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"52tnr","text":"Keep in mind that brief periods of sun can initiate natural avalanches, especially in areas that saw high snowfall amounts.
Storm slabs are expected to stay reactive throughout the day, especially in wind loaded terrain and/or when sun is on the slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8b0ol","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1stt0","text":"Monitor the bond of the new snow to old surfaces before committing to any terrain with consequences.
Storm slabs are expected to stay reactive throughout the day, especially in wind loaded terrain and/or when sun is on the slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f3k1d","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6tkcr","text":"Monitor the bond of the new snow to old surfaces before committing to any terrain with consequences.
Storm slabs may remain reactive to human triggers in wind loaded terrain features. Wind direction has varied from southwest to northwest so watch for these deep pockets on a variety of aspects.
Wet loose avalanches will become increasingly likely throughout the day on steep solar aspects at all elevations.
Storm slabs may remain reactive to human triggers in wind loaded terrain features. Wind direction has varied from southwest to northwest so watch for these deep pockets on a variety of aspects.
Reactive storm slabs are expected at upper elevations, especially in wind-loaded areas where fresh wind slabs may be the primary concern. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"75e5j","text":"Loose-dry avalanches may occur from steeper terrain features.
Storm slabs may remain reactive to human triggers in wind loaded terrain features. Wind direction has varied from southwest to northwest so watch for these deep pockets on a variety of aspects.
Moderate to strong winds from shifting directions are forming fresh wind slabs on lee features at treeline and above on a variety of aspects.
Wind slabs from snow earlier in the week accompanied by strong wind in exposed lee terrain may still linger in high elevation terrain.
Fresh and reactive storm slabs are likely to be encountered, especially in wind-loaded areas at upper elevations. A change in wind direction means that wind loading may be found on many aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"52tnr","text":"Keep in mind that brief periods of sun can initiate natural avalanches, especially in areas that saw high snowfall amounts.
Changing wind from southwest to northwest has added complexity to the snow loading pattern. You may find reactive wind slabs on unsuspecting slopes and on a variety of aspects, especially where the slab sits above a crust.
Cornices become weak with daytime warming. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below. Their large mass can trigger deeper slabs on buried crusts  in the upper snowpack that a single rider wouldn't trigger on their own.
Loose wet avalanches in steep southerly terrain should be on your radar with sunny skies and freezing levels rising to ridge top on Thursday.
The spring sun and rising freezing levels (2000 m) can pack a punch quickly and initiate loose wet avalanches on all aspects. At higher elevations where the recent storm snow deposits are deeper, loose wet avalanches may be able to entrain more snow or initiate larger wet slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3bpg7","text":"Watch for signs of instability like natural avalanche activity, wet or moist snow surfaces, and snowballing, especially on solar aspects.
Cornices become weak with daytime warming and solar radiation. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
Reactive storm slabs are expected at upper elevations, especially in wind loaded areas where fresh wind slabs may be the primary concern. A change in wind direction means that wind loading may be found on many aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ak7ur","text":"With so much new snow, keep in mind that short periods of direct sun could trigger natural avalanches.
Flurries bringing small amounts of new snow will feed fresh wind slab development. Variable wind direction has resulted in deep pockets of recent storm snow on a variety of aspects. These older wind slabs are likely becoming more stubborn to trigger.
Wind slabs are likely to be reactive in freshly wind loaded terrain features at upper elevations Thursday. Forecast strong winds and light new snow will add to this problem, forming new slabs and obscuring recent ones.
Storm slabs will likely be most reactive in wind loaded features. The new snow will be especially sensitive to the sun, promoting rapid settlement which may increase slab reactivity.
Snow from earlier in the week has been redistributed by primarily southwest wind. Wind slabs are likely lingering on a variety of aspects.
Wind slabs are most likely to be reactive in freshly wind loaded terrain features at upper elevations on Thursday. Forecast winds may add to this problem, forming small new slabs and obscuring recent ones.
Wind slabs are most likely to be reactive in freshly wind loaded terrain features at upper elevations on Thursday. Forecast winds may add to this problem, forming small new slabs and obscuring recent ones.
Wind slabs are likely to be reactive in freshly wind loaded terrain features at upper elevations Thursday. Forecast strong winds and light new snow will add to this problem, forming new slabs and obscuring recent ones.
Storm slabs are most likely to be reactive:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqejn","text":"- at elevations with dry snow experiencing rapid warming for the first time (around 1800 m)","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9e3q","text":"- on dry southerly aspects seeing strong sun for the first time","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bt8de","text":"- in freshly wind loaded terrain features at upper elevations
Cornices become weak with daytime warming. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
Storm slabs are most likely to be reactive:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"deubo","text":"- at elevations with dry snow experiencing rapid warming for the first time (around 1800 m)","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1tqhd","text":"- on dry southerly aspects seeing strong sun for the first time","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a98da","text":"- in freshly wind loaded terrain features at upper elevations
Storm slabs are most likely to be reactive:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"96mpq","text":"- at elevations experiencing rapid warming for the first time (1700-2000m)","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8cf16","text":"- on dry southerly aspects seeing strong sun for the first time","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ccgl5","text":"- in freshly wind loaded terrain features at upper elevations
New snow arriving overnight with moderate wind may result in some fresh wind slabs by Sunday morning. They will be most likely be isolated to immediate lees of ridgecrests and roll-overs in wind exposed alpine terrain. They may be most reactive where they sit over a crust.
Cornices are large and looming along many ridgelines. They are capable of triggering large avalanches when they fail.
Flurries bringing small amounts of new snow will feed fresh wind slab development. Variable wind direction has resulted in deep pockets of recent storm snow on a variety of aspects. These older wind slabs are likely becoming more difficult to trigger.
torm slabs may form over the day above the rain-snow line as snow accumulates. Wind slabs may form in exposed terrain from strong southwest wind. These slabs may not bond well to an underlying hard melt-freeze crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2ucnt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9mcjo","text":"
Wet loose avalanches will become increasingly likely throughout the day on steep solar aspects at all elevations.
et loose avalanches will become increasingly likely throughout the day on steep solar aspects at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dvssg","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8mr77","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9fqsc","text":"
Reactive storm slabs are expected at upper elevations, especially in wind-loaded areas.
Moderate to strong southwesterly winds are forming fresh wind slabs on lee features at treeline and above. Use caution when transitioning into wind affected terrain.
New slabs may form as a storm impacts the region. Storm slabs may build by the end of the day with forecasted 10 to 20 cm of snow above 1400 m. Wind slabs may form in lee terrain features at high elevations from strong southwest wind. Assess for slab formation before committing yourself to consequential terrain features.
New snow arriving overnight with moderate wind may result in some fresh wind slabs by Sunday morning. They will be most likely be isolated to immediate lees of ridgecrests and roll-overs in wind exposed alpine terrain. Storm snow may be most reactive where it sits over a crust.
New wind slabs may form over the day as new snow and strong wind impact the region. The slabs may be thickest and touchiest in lee terrain features near ridges. Most snow is forecast for the north of the region; slabs may not have time to develop by the end of the day in the south of the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"i745","text":"
Flurries depositing up to 25 cm accumulating by the end of Tuesday may develop slabs, especially where wind redistributes dry snow. Expect to find wet flurries and rain below 1000 m.
Recent snow and wind have formed wind slabs in immediate lees of ridge crests and roll-overs at upper elevations. They may remain sensitive to triggering Sunday.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4nfv6","text":"
Recently formed wind slabs may remain reactive to human triggering in wind loaded terrain features at upper elevations.
More recent wind slabs could be reactive in wind loaded terrain features at upper elevations on Friday. Light new snow in the forecast may add to this problem, forming small new slabs and obscuring recent ones.
New snow falling mid week is being redistributed by primarily southwest winds into lee terrain.
Cornices become weak with daytime warming. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
Wind slabs will be most likely be isolated to immediate lees of ridgecrests and roll-overs in wind exposed alpine terrain.
Recently formed wind slabs may remain reactive to human triggering in wind loaded terrain features at upper elevations.
Recently formed wind slabs may remain reactive to human triggering in wind loaded terrain features at upper elevations.
New snow may be most reactive where it is wind affected or sits over a crust. In areas where the bulk of snow arrived overnight may see some wind effect most likely isolated to immediate lees of ridgecrests and roll-overs in wind exposed alpine terrain.
New snow may be most reactive where it is wind affected or sits over a crust. In areas where the bulk of snow arrived overnight may see some wind effect most likely isolated to immediate lees of ridgecrests and roll-overs in wind exposed alpine terrain.
Small wind slabs may lurk on slippery crusts on lee features below alpine ridgetops, formed by recent convective flurries and southwesterly winds.
Convective flurries on Sunday and southwesterly winds may form small wind slabs sitting on slippery crusts on lee features below alpine ridgetops.
Convective flurries on Sunday and southwesterly winds may form small wind slabs sitting on slippery crusts on lee features below alpine ridgetops.
urface snow will lose cohesion and become unstable with solar warming during the day.
Cornices become weak with daytime warming. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
Wind slabs will be most likely be isolated to immediate lees of ridgecrests and roll-overs in wind exposed alpine terrain.
Fresh wind slabs may be forming on a variety of aspects due to a shift in wind direction.
Up to 15 cm fresh snow collecting in upslope areas will be deepest and most reactive where impacted by wind. Use caution around ridges and lee features, and when transitioning into wind affected terrain.
Wind slabs likely formed in areas of the region that received at least 10 cm of snow on Sunday. These slabs could be triggered by riders in steep, lee terrain features at high elevations. Carefully evaluate for wind slabs prior to committing to consequential avalanche terrain.
round 10 to 20 cm of recent snow above 1400 m may take a bit of time to bond to an underlying hard melt-freeze crust. The wind likely blew some of the snow into wind slabs in lee terrain features. Assess for the bond of this new snow and for slab properties before committing to consequential avalanche terrain.
Around 10 to 20 cm of new snow may be found across the region, which may not bond well to an underlying crust or hard snow surface. The snow fell with strong southeast wind, likely forming wind slabs in lee terrain features at higher elevations. Carefully assess for slab properties and the bond of the snow to the underlying snowpack prior to committing yourself to consequential avalanche terrain.
New wind slabs may have formed from recent snow and strong southwest wind at high elevations. Use caution in steep, lee terrain features at higher elevations. It is possible that storm slabs may exist in sheltered terrain features, particularly if you find 15+ cm of fresh snow over a hard melt-freeze crust.
Wind slabs could still be triggered by riders in steep, lee terrain features at high elevations. Carefully evaluate for wind slabs prior to committing to consequential avalanche terrain.
Wind slabs likely formed in areas of the region that received at least 10 cm of snow on Sunday. These slabs could be triggered by riders in steep, lee terrain features at high elevations. Carefully evaluate for wind slabs prior to committing to consequential avalanche terrain.
Cornices become weak with daytime warming. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
Recent snow and wind have formed wind slabs in immediate lees of ridge crests and roll-overs at upper elevations. They may remain sensitive to triggering Sunday.
Flurries bringing small amounts of new snow will feed fresh wind slab development. Variable wind direction has resulted in deep pockets of recent storm snow on a variety of aspects. These older wind slabs are likely becoming more difficult to trigger.
Cornices will become fragile with rising temperatures, especially when the sun is out. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
Ongoing flurries and strong southwest winds may build reactive slabs in lee features, especially where the wind is redistributing dry snow.
Small wind slabs may lurk on slippery crusts on lee features below alpine ridgetops, formed by recent convective flurries and southwest winds.
Fresh snow and strong southwest winds are expected to form fresh slabs that will probably become more reactive as the day goes on and the snow piles up. Wind loaded areas are expected to be the most reactive.
Cornices become weak with daytime warming. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below. Their large mass can trigger deeper slabs on buried crusts  in the upper snowpack that a single rider wouldn't trigger on their own.
Reactive storm slabs may build through the day on Wednesday. They may be more sensitive on wind-loaded slopes at treeline and in the alpine. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"41igq","text":"Loose-dry sluffing of the new snow can be expected from steeper slopes and terrain features.
Fresh wind slabs will likely form on north and east facing slopes on Tuesday. Winds may shift on Wednesday and form isolated slabs on other aspects too.
New snow falling Sunday and Monday combined with primarily will build fresh wind slabs. These may be sitting above older lingering wind slabs from midweek.
resh storm slabs are expected to build throughout the day and are likely to become increasingly reactive as the day goes on, especially in wind loaded areas.
Small new wind slabs in the immediate lee of ridgetop may react to human triggers on Sunday. Up to 30 cm of dry storm snow has now accumulated on a crust in similar terrain, so the possibility exists for slabs to fracture deeper than expected.
Slab problems are likely to be restricted to wind loaded features by Sunday, but pinning down slab distribution may be tricky with winds that shifted north after the storm. Analyze slopes for wind loading patterns and test small, low-consequence features before stepping out. This problem will be most pronounced in the south of the region.
Small recent wind slabs in the immediate lee of ridgetop may still react to human triggers on Monday. Up to 30 cm of dry storm snow has now accumulated on a crust in similar terrain (shaded high elevations), so the possibility exists for some slabs to fracture a bit deeper than expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bk4tq","text":"A forecast increase in east winds could start to form new slabs before the end of the day.
There is widespread wind effect from strong wind, which produced touchy wind slabs that could still be triggered by riders. Use caution in steep, wind-affected terrain and look for signs of instability prior to committing yourself. Wind slabs may be particularly touchy on sun-exposed slopes, where they overly a hard melt-freeze crust.
Slab problems are likely to be restricted to wind loaded features by Sunday, but pinning down slab distribution may be tricky with winds that shifted north after the storm. Analyze slopes for wind loading patterns and test small, low-consequence features before stepping out. This problem will be most pronounced in the south of the region.
Cornices will become fragile with rising temperatures, especially when the sun is out. Cornice falls are dangerous on their own and they can also trigger slabs on slopes below.
lab problems are likely to be restricted to wind loaded features by Sunday, but pinning down slab distribution may be tricky with winds that shifted north after the storm. Analyze slopes for wind loading patterns and test small, low-consequence features before stepping out.
Ongoing southwest wind and incremental flurries may combine with previous accumulations that fell over the weekend to form wind slabs in lee features that may be possible to trigger. Use caution around ridges and lee features and when transitioning into wind affected terrain.
10-25 cm of convective new snow and strong southwesterly winds are forming fresh wind slabs on lee features at treeline and above.
Cornices are large and looming along many ridgelines. They are capable of triggering large avalanches when they fail.
New snow and strong southwest wind may form fresh wind slabs on Wednesday. They will be most likely be isolated to immediate lees of ridgecrests and roll-overs in wind-exposed alpine terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4nfv6","text":"Loose-dry sluffing of the new snow can be expected from steeper slopes and terrain features.
Wind slabs will be most likely be isolated to immediate lees of ridgecrests and roll-overs in wind exposed alpine terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6lhgn","text":"Loose-dry sluffing of the new snow can be expected from steeper slopes and terrain features.
Up to 25 cm could accumulate on Wednesday, creating fresh storm slabs that are likely to increase in reactivity throughout the day, particularly in wind loaded areas.
New snow and strong southwest to northwest wind may form fresh wind slabs. They will most likely be isolated to immediate lees of ridgecrests and roll-overs at upper elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4nfv6","text":"Loose surface avalanches may occur from steeper slopes and terrain features, especially if the sun comes out, and in locations that received heavier snowfall amounts.
New snow and strong southwest to northwest wind may form fresh wind slabs. They will be most likely be isolated to immediate lees of ridgecrests and roll-overs at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e96vc","text":"Loose-dry sluffing may occur from steeper slopes and terrain features, especially if the sun comes out, and in locations that receieved higher snowfall amounts.
New snow and strong southwest to northwest wind may form fresh wind slabs. They will most likely be isolated to immediate lees of ridgecrests and roll-overs at upper elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"41igq","text":"Loose snow avalanches within the new snow may occur from steeper slopes and terrain features, especially in places that receieved heavier amounts of new snow, and if the sun comes out.
10-20 cm of fresh snow with moderate to strong winds have likely formed reactive wind slabs in lee terrain. Wind slabs may be found on many aspects due to recent variable wind direction.
0-20 cm of fresh snow with moderate to strong winds have likely formed reactive wind slabs in lee terrain. Wind slabs may be found on many aspects due to recent variable wind direction.
Fresh snow with moderate to strong winds may have formed reactive wind slabs in lee terrain. Wind slabs may be found on many aspects due recent variable wind direction.
Moderate winds may continue to build reactive slabs in lee features, especially where the wind is redistributing dry snow.
Forecast new snow and wind are expected for form fresh storm slabs that will likely be reactive to human triggering. This problem is expected to become more reactive as the day goes on and as the wind creates touchier conditions.
Forecast new snow and wind are expected for form fresh storm slabs that will likely be reactive to human triggering. This problem is expected to become more reactive as the day goes on and as the wind creates touchier conditions.
5-10 cm of convective new snow and strong southwesterly winds are forming fresh wind slabs on lee features at treeline and above.
20-30 cm. of recent snow has been accompanied by periods of strong winds from shifting directions which have formed fresh wind slabs on a variety of aspects at treeline and above.
5-20 cm. of recent snow has been accompanied by periods of strong winds from shifting directions which have formed fresh wind slabs on a variety of aspects at treeline and above. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"872s6","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4bu7b","text":"Wind slabs up to 50 cm. thick have recently been reported on lee and cross loaded slopes in the alpine. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7kidm","text":"
Recently formed wind slabs could still be triggered by riders. Use caution in steep, wind-affected terrain and look for signs of instability prior to committing yourself.
Cornices will become fragile with rising temperatures, especially when the sun is out. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
New snow and strong southwest to northwest wind may form fresh wind slabs. They will most likely be isolated to immediate lees of ridgecrests and roll-overs at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a67vb","text":"Loose surface avalanches are possible from steeper slopes and terrain features, especially if the sun comes out and in locations that received higher snowfall amounts.
Recently formed wind slabs may remain reactive to human triggers Thursday. On Friday, new snow and wind will likely form fresh and reactive slabs. At treeline, these may sit over a crust.
Fresh snow with moderate to strong winds may form reactive wind slabs in lee terrain.
15-25 cm of new snow with strong southwest wind is expected during the day on Friday, likely forming slabs that may become increasingly reactive throughout the day.
20-30 of new snow and strong southwest wind are expected for form fresh storm slabs that will likely be reactive to human triggering. There is a higher likelihood of triggering these slabs in wind-drifted areas.
Recent snow and wind are expected to form fresh wind slabs that may be reactive to human triggering. Avoid freshly wind-loaded terrain features.
New snow and strong wind are expected to contribute to ongoing wind slab formation in lee features. Avoid freshly wind-loaded terrain features.
Recently formed wind slabs may remain sensitive to human triggering Saturday.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4nfv6","text":"
urface snow will tend to lose cohesion and become unstable with solar warming during the day. Avoid exposing yourself to terrain where a small wet loose avalanche could have big consequences.
Cornices are often fragile this time of year, especially when the sun is out. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
Lingering pockets of wind slab may be triggerable in unsupported terrain features.
urface snow will lose cohesion and become unstable with solar warming during the day. Avoid exposing yourself to terrain where a small wet loose avalanche could have big consequences.
Surface snow will lose cohesion and become unstable with sun and rising temperatures during the day. Avoid exposing yourself to terrain where a small wet loose avalanche could have big consequences.
New snow and strong southwest to northwest wind will likely form fresh and reactive wind slabs in immediate lees of ridgecrests and roll-overs at upper elevations.
Recent snow and wind have formed wind slabs in immediate lees of ridge crests and roll-overs at upper elevations. They may remain sensitive to triggering Sunday.
Fresh wind slabs may form on many aspects with new snow and shifting wind directions on Friday night and Saturday.
Lingering pockets of wind slab may be triggerable in unsupported terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4nfv6","text":"
Cornices are especially fragile this time of year. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
Surface snow will lose cohesion and become unstable with sunshine and rising freezing levels during the day. Avoid exposing yourself to terrain where a small wet loose avalanche could have big consequences.
Fresh wind slabs will be forming in lee terrain features over Friday night. Due to previous northerly winds, buried wind slabs may exist on many aspects.
Recently formed wind slabs may remain sensitive to human triggering Saturday.
Recent snow and wind have formed wind slabs in immediate lees of ridge crests and roll-overs at upper elevations. They may remain sensitive to triggering especially where they sit over a crust.
Lingering wind slabs formed by 20-30 cm. of recent snow and previously strong winds from shifting directions may remain reactive on lee features in the alpine.
Recent snow and wind are expected to form fresh wind slabs that may be reactive to human triggering. Avoid freshly wind-loaded terrain features.
New snow and strong southwest to northwest wind will likely form fresh and reactive wind slabs in immediate lees of ridgecrests and roll-overs at upper elevations.
New snow and winds may form fresh wind slabs. They will be most likely be isolated to immediate lees of ridgecrests and roll-overs at upper elevations. They are mostly likely to be reactive where they sit over a crust.
Wet loose avalanches will start to run naturally on steep solar aspects when the sun comes out.
New snow and strong changing winds may form fresh wind slabs. They will be most likely be isolated to immediate lees of ridgecrests and roll-overs at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e96vc","text":"Loose-dry sluffing may occur from steeper slopes and terrain features, especially if the sun comes out, and in locations that receieved higher snowfall amounts.
New snow and strong southwest to northwest wind will likely form fresh and reactive wind slabs in immediate lees of ridgecrests and roll-overs at upper elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4nfv6","text":"
New snow and strong southwest to northwest wind will likely form fresh and reactive wind slabs in immediate lees of ridgecrests and roll-overs at upper elevations.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"41igq","text":"
0-25 cm of new snow with strong southwest wind is expected during the day on Friday, likely forming slabs that may become increasingly reactive throughout the day.
Fresh wind slabs will likely form on north and east facing slopes on Thursday and Friday.
widespread storm slab problem will continue to take shape over Friday night, meaning touchy avalanche conditions for Saturday. The new snow will be especially sensitive to human triggers at higher elevations where wind loading has occurred and will likely shed naturally from steep, sun exposed slopes.
A widespread storm slab problem will continue to take shape over Friday night, meaning touchy avalanche conditions for Saturday. These conditions may be particularly heightened in the south of the region where greater snowfall typically accumulates. The new snow will be especially sensitive to human triggers at higher elevations where wind loading has occurred and will likely shed naturally from steep, sun exposed slopes.
Expect a north/south split for conditions on Saturday, with reactive new wind slabs scattered across in leeward terrain in the north of the region and a more widespread and reactive storm slab problem in the south (Coquihalla). Any solar exposure that occurs on steep slopes will likely cause loose snow to shed naturally.
Fresh wind slabs will be forming in lee terrain features over Friday night. Due to previous northerly winds, buried wind slabs may exist on many aspects.
Lingering wind slabs formed by 10-20 cm. of recent snow and previously strong winds from shifting directions may remain reactive on lee features in the alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7kidm","text":"
Surface snow will lose cohesion and become unstable with solar warming during the day. Avoid exposing yourself to terrain where a small wet loose release could have big consequences.
Up to 20 cm of recent snow from the past week and periods of strong wind have formed wind slabs in lee features that may be possible to trigger.
Recent snow and wind are expected to form fresh wind slabs that may be reactive to human triggering.
Recent snow and wind are expected to form fresh wind slabs that may be reactive to human triggering.
20-30 of new snow has formed widespread storm slabs that may be possible to trigger. This problem will be more pronounced in wind-drifted areas.
Wind slabs have been reactive to riders and naturally, and may remain so this weekend.
Lingering wind slabs formed by 30-40 cm. of recent snow and previously strong southwesterly winds may remain reactive on lee features at treeline and above
Lingering wind slabs formed by recent snow and previously strong southwesterly winds may remain reactive on lee features at treeline and above.
Cornices are large and looming along many ridgelines and have likely grown with the recent wind. Strong solar radiation and warming are common triggers for cornice failures which could trigger avalanches on the slopes below.
As winds shift to the northeast wind slabs may be found on all aspects at upper elevations.
urface snow will lose cohesion and become unstable with solar warming during the day. Avoid exposing yourself to terrain where a small wet loose release could have big consequences.
Cornices will become fragile with rising temperatures, especially when the sun is out. Cornice falls are dangerous on their own and they can also trigger slabs on slopes below.
As winds shift to the northeast wind slabs may be found on all aspects at upper elevations.
New snow and strong wind will likely continue to make wind slabs reactive to riders in exposed terrain.  Use caution in steep, wind-affected terrain and look for signs of instability prior to committing yourself. Wind slabs may be particularly touchy on sun-exposed slopes up to 1300 m, where they overly a hard melt-freeze crust.
Cornices are large and will weaken with daytime warming. Stay well back from them on ridges and avoid travelling beneath them. A cornice fall has the potential of triggering slabs on the slopes below.
Cornices are large and will become more fragile with rising temperatures and sun exposure. Cornice falls are dangerous in their own right and they can trigger slabs on slopes below.
Cornices are large and will become more fragile with rising temperatures and sun exposure. Many natural cornice failures were reported recently. Cornice falls are dangerous on their own and they can trigger slabs on slopes below.
Cornices are large and will become more fragile with rising temperatures and sun exposure. Many natural cornice failures were reported recently. Cornice falls are dangerous on their own and they can trigger slabs on slopes below.
Cornices are large and will become more fragile with rising temperatures and sun exposure. Many natural cornice failures were reported recently. Cornice falls are dangerous on their own and they can trigger slabs on slopes below.
urface snow will tend to lose cohesion and become unstable with solar warming during the day. Avoid exposing yourself to terrain where a small wet loose avalanche could have big consequences.
Surface snow will lose cohesion and become unstable with sun and rising temperatures during the day.
Surface snow will lose cohesion and become unstable with sunshine and rising freezing levels during the day.
xpect natural wet loose avalanches to occur on solar aspects when the sun comes out.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dvssg","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8mr77","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9fqsc","text":"
Expect small wet loose avalanches to occur naturally on solar aspects when the sun comes out.
Wet loose avalanches will start to run naturally on steep solar aspects when the sun comes out.
Wet loose avalanches will start to run naturally on steep solar aspects when the sun comes out.
Expect natural wet loose avalanches to occur on solar aspects when the sun comes out.
urface snow can quickly lose cohesion and become unstable with strong solar radiation and warm temperatures. Freezing levels are forecast to stay elevated and rise to 2700 m overnight. Clear skies during the night might allow for a shallow refreeze but the snow will likely become moist/wet in the early morning hours. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"54rdf","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9ga8n","text":"Back off slopes when the snow becomes moist or wet. Avalanches might grow larger than expected by entraining snow along the way and reach lower elevations. Avoid exposing yourself to slopes that are exposed to the sun, especially in the afternoon. Be aware what is above you when leaving your skiing or riding area.
Expect natural wet loose avalanches to occur on solar aspects when the sun comes out.
urface snow can quickly lose cohesion and become unstable with strong solar radiation and warm temperatures. In areas that don't see a good refreeze the snow will likely become moist/wet in the early morning hours. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ddp6n","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ccohi","text":"Back off slopes when the snow becomes moist or wet. Avalanches might grow larger than expected by entraining snow along the way and reach lower elevations. Avoid exposing yourself to slopes that are exposed to the sun, especially in the afternoon. Be aware what is above you when leaving your skiing or riding area.
Expect natural wet loose avalanches to occur on solar aspects when the sun comes out.
Surface snow can quickly lose cohesion and become unstable with strong solar radiation and warm temperatures. Freezing levels are forecast to stay at 2400 m overnight. Clear skies during the night might allow for a shallow refreeze but the snow will likely become moist/wet in the early morning hours. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4h1qi","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fs52v","text":"Back off slopes when the snow becomes moist or wet. Avalanches might grow larger than expected by entraining snow along the way and reach lower elevations. Avoid exposing yourself to slopes that are exposed to the sun, especially in the afternoon. Be aware what is above you when leaving your skiing or riding area.
Surface snow can quickly lose cohesion and become unstable with strong solar radiation and warm temperatures. Freezing levels are forecast to stay at 2200 m overnight. Clear skies during the night might allow for a shallow refreeze but the snow will likely become moist/wet in the early morning hours. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"52cpp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f5cu0","text":"Back off slopes when the snow becomes moist or wet. Avalanches might grow larger than expected by entraining snow along the way and reach lower elevations. Avoid exposing yourself to slopes that are exposed to the sun, especially in the afternoon. Be aware what is above you when leaving your skiing or riding area.
urface snow will tend to lose cohesion and become unstable with solar warming during the day. Avoid exposing yourself to terrain where a small wet loose avalanche could have big consequences.
Surface snow will lose cohesion and become unstable with sun and rising temperatures during the day.
Surface snow will lose cohesion and become unstable with sunshine and rising freezing levels during the day.
xpect natural wet loose avalanches to occur on solar aspects when the sun comes out.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dvssg","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8mr77","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9fqsc","text":"
If the sun is out loose wet avalanche activity may exist especially in alpine locations where the air temperatures may be warmer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":17,"length":20,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
Watch for old wind slabs in the alpine, and open \"alpine like\" features at treeline. These slabs may be poorly bonded to underlying crust and surface hoar layers, although the distribution of these layers is uncertain. These old wind slabs may become reactive with above freezing temperatures and/or afternoon sun, especially on steeper terrain features and solar aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"54dvn","text":"
In the north of the region (e.g., Duffey Lake), a weak layer of sugary faceted grains around a hard melt-freeze crust sits near the base of the snowpack. Although we haven't seen avalanches on this layer since last weekend, the likelihood will increase with each day of warm weather. The most likely terrain features of concern are where the ground cover is smooth, such as on scree slopes, rock slabs, or glacial ice.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6qtcu","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d23lt","text":"This problem does not exist in the south of the region.
A crust from early November exists down about 80-100 cm. This layer has weak, sugary facets above and below it. This layer is most likely to be reactive to human triggers in shallow, rocky, snowpack areas in the alpine.
In the north of the region (e.g., Duffey Lake), a weak layer of sugary faceted grains around a hard melt-freeze crust sits near the base of the snowpack. Avoid slopes with overhead hazards like cornices. If they fail during the warm-up they could trigger the slope below. This problem does not exist in the south of the region.
A rapidly warming snow surface may release loose wet avalanches, especially in areas where the snow surface has already been saturated by recent rain. Pinwheeling is a good indicator of this type of instability.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":172,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
A crust exists near the base of the snowpack. A lack of decisive data on this layer is keeping it on our radar for now. While it's been showing results in snowpack tests in some areas, most reports describe an improving bond to the overlying snow. Potential for full depth avalanches may exist in areas where weak, sugary facets overly this crust, especially in areas of smooth ground cover such as scree slopes, grassy slopes, or rock slabs.
A crust from early November exists down about 70-100 cm. This layer has weak, sugary facets above and below it. This layer is most likely to be reactive to human triggers on south facing slopes and in shallow, rocky, snowpack areas in the alpine.
A rapidly warming snow surface may release small loose wet avalanches, especially on steep sunny aspects. Pinwheeling is a good indicator of this type of instability. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":127,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=pinwheel#signs-of-instabili
A crust from early November exists down about 50-75 cm. This layer has weak, sugary facets above and below it. This layer is most likely to be reactive to human triggers on south facing slopes and in shallow, rocky, snowpack areas in the alpine.
A buried rain crust is widespread in the region.  The snowfall from this storm could be enough to wake up this deeper instability, especially in the central and northern portions of the region.
Continued warm temperatures may release loose wet avalanches. Pinwheeling is a good indicator of this type of instability. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":83,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=pinwheel#signs-of-instabilit
Watch for old and fresh wind slabs in the alpine, and open \"alpine like\" features at treeline. These slabs may be poorly bonded to underlying crust and surface hoar layers.  These old wind slabs may become reactive with above freezing temperatures and/or afternoon sun, especially on steeper terrain features and solar aspects.
A crust sits near the base of the snowpack. Although we haven't had any reports of avalanche activity on this layer during the ongoing warming event, there is potential for large avalanches to be triggered on this layer by:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9nlkr","text":"large loads such as cornice falls or smaller loose wet avalanches","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"pk45","text":"human traffic in thin, rocky areas in the alpine","type":"u
A rapidly warming snow surface may release loose wet avalanches. Pinwheeling is a good indicator of this type of instability.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":86,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e2trk","text":"The hot weather up high over the next couple days may awaken this layer. Cornice falls, or smaller avalanches are especially likely to trigger a large avalanche on this layer. This layer is most likely to be reactive to human triggers on south facing slopes and in shallow, rocky, snowpack areas in the alpine.
A crust sits near the base of the snowpack. Although we haven't had any reports of avalanche activity on this layer during the recent warming event, there is potential for large avalanches to be triggered on this layer by:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9nlkr","text":"large loads such as cornice falls or smaller loose wet avalanches","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"pk45","text":"human traffic in thin, rocky areas in the alpine","type":"u
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d7sci","text":"The hot weather up high over the next couple days may awaken this layer. Cornice falls, or smaller avalanches are especially likely to trigger a large avalanche on this layer. This layer is most likely to be reactive to human triggers on south facing slopes and in shallow, rocky, snowpack areas in the alpine.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1kfbd","text":"The hot weather up high over the next couple days may awaken this layer. Cornice falls, or smaller avalanches are especially likely to trigger a large avalanche on this layer. This layer is most likely to be reactive to human triggers on south facing slopes and in shallow, rocky, snowpack areas in the alpine.
Rapid warming and sunshine will likely release loose wet avalanches. Pinwheeling is a good indicator of this type of instability.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":90,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
Things are looking HOT up high for the next couple days. Naturally triggered wet loose avalanches are possible on all aspects and especially likely on solar aspects.
Beneath the snow from last weekend's storm, a layer of surface hoar and facets may linger as a persistent slab problem in isolated areas. A crust/facet combo from early November is more widespread and can be found closer to the ground. Easy-to-trigger avalanches in the new storm snow have the potential to step-down to these deeper layers.
Rapid warming and sunshine may release loose wet avalanches. Pinwheeling is a good indicator of this type of instability.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":82,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
Up to 15 cm of new snow is forecast to accumulate by late Thursday in favored areas. Moderate to strong southwest winds may redistribute the new snow into shallow slabs on isolated lee features.
A rapidly warming snow surface may release loose wet avalanches. Pinwheeling is a good indicator of this type of instability.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":86,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
A rapidly warming snow surface may release small loose wet avalanches, especially on steep sunny aspects. Pinwheeling is a good indicator of this type of instability. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":127,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=pinwheel#signs-of-instabili
In the north of the region (e.g., Duffey Lake), a weak layer of sugary faceted grains around a hard melt-freeze crust sits near the base of the snowpack. Avoid slopes with overhead hazards like cornices. If they fail during the warm-up they could trigger the slope below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"aedru","text":"This problem does not exist in the south of the region.
A crust from early November exists down about 75-125 cm, and may have weak sugary facets above and below it. Storm slab avalanches may step down and trigger this layer, resulting in large avalanches.
30-70 cm of snow fell late last week with the highest amounts in the south. Strong southwest winds have built deep wind slabs at treeline and alpine elevations on lee and crossloaded slopes.
Warming temperatures will exacerbate this problem. 30 to 70 cm of storm snow fell across the region over the last few days which has been formed into slabs by strong southwest wind. Large human triggered wind slabs remain likely. The new snow may be resting on surface hoar and facets which could set up a scenario where wind slabs remain surprisingly touchy.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d6dhf","text":"
Very large avalanches over the past few days suggest that a buried crust formed in early November and weak snow at the ground are reactive persistent and deep persistent weak layers. We have limited information about the distribution of this snowpack structure in the region. Keep in mind that easy-to-trigger avalanches in the new storm snow have the potential to step-down to these deeper layers, producing large, destructive avalanches.
In the north of the region (e.g., Duffey Lake), a weak layer of sugary faceted grains around a hard melt-freeze crust sits near the base of the snowpack. Avoid slopes with overhead hazards like cornices. If they fail during the warm-up they could trigger the slope below. This problem does not exist in the south of the region.
Wednesday marks the first day that the cold storm snow will feel both above freezing temperatures and direct sun.  Loose wet avalanche activity is expected to be widespread.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1kfbd","text":"The hot weather up high over the next couple days may awaken this layer. Cornice falls, or smaller avalanches are especially likely to trigger a large avalanche on this layer. This layer is most likely to be reactive to human triggers on south facing slopes and in shallow, rocky, snowpack areas in the alpine.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d7sci","text":"The hot weather up high over the next couple days may awaken this layer. Cornice falls, or smaller avalanches are especially likely to trigger a large avalanche on this layer. This layer is most likely to be reactive to human triggers on south facing slopes and in shallow, rocky, snowpack areas in the alpine.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e2trk","text":"The hot weather up high over the next couple days may awaken this layer. Cornice falls, or smaller avalanches are especially likely to trigger a large avalanche on this layer. This layer is most likely to be reactive to human triggers on south facing slopes and in shallow, rocky, snowpack areas in the alpine.
A crust exists near the base of the snowpack. A lack of decisive data on this layer is keeping it on our radar for now. While it's been showing some results in snowpack tests in some areas, most reports describe an improving bond to the overlying snow. Potential for full depth avalanches may exist in areas where weak, sugary facets overly this crust, especially in areas of smooth ground cover such as scree slopes, grassy slopes, or rock slabs.
Watch for old and fresh wind slabs in the alpine, and open \"alpine like\" features at treeline. These slabs may be poorly bonded to underlying crust and surface hoar layers.  These old wind slabs may become reactive with above freezing temperatures and/or afternoon sun, especially on steeper terrain features and solar aspects.
Northerly aspects in the alpine may see deeper pockets of fresh wind slab where the old storm snow was redistributed. Warm temperatures and solar radiation will continue the rapid settlement and accelerated slab development on all aspects at treeline and above.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":174,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
Continued warm temperatures may release loose wet avalanches. Pinwheeling is a good indicator of this type of instability. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":83,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=pinwheel#signs-of-instabilit
Heavy wind redistribution has created varying layers of hard and soft windslabs in the alpine, on lee and cross-loaded features in the alpine, and open \"alpine like\" features at treeline. These slabs may be poorly bonded to underlying crust and surface hoar layers.  Of particular concern is the Nov 05 crust and facet layer which is buried 30-100cm deep in wind loaded areas.
A crust sits near the base of the snowpack. Although we haven't had any reports of avalanche activity on this layer during the recent warming event, there is potential for large avalanches to be triggered on this layer by:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1h50p","text":"large loads such as cornice falls or smaller loose wet avalanches","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ehn3s","text":"human traffic in thin, rocky areas in the alpine","type":"u
Heavy wind redistribution has created varying layers of hard and soft windslabs in the alpine, on lee and cross-loaded features in the alpine, and open \"alpine like\" features at treeline. These slabs may be poorly bonded to underlying crust and surface hoar layers.  Of particular concern is the Nov 05 crust and facet layer which is buried 30-100cm deep in wind loaded areas.
Strong southwest winds have formed deep wind slabs at treeline and alpine elevations on lee and crossloaded slopes. These wind slabs may become more reactive as temperatures rise.
There is currently 90-120 cm of snow sitting on top of weak a layer of sugary facets that developed above a firm crust which formed in early November. Warm temperatures at upper elevations late Tuesday and through Wednesday may increase the likelihood triggering deep persistent slabs.
If the sun pokes out and alpine temperatures are above freezing wet loose avalanches may occur.
A rapidly warming snow surface may release loose wet avalanches. Pinwheeling is a good indicator of this type of instability.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":86,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
A crust sits near the base of the snowpack. Although we haven't had any reports of avalanche activity on this layer during the recent warming event, there is potential for large avalanches to be triggered on this layer by:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bct5","text":"large loads such as cornice falls or smaller loose wet avalanches","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fmm5u","text":"human traffic in thin, rocky areas in the alpine","type":"u
Things are looking HOT up high for the next couple days. Naturally triggered wet loose avalanches are possible on all aspects and especially likely on solar aspects.
Very large avalanches over the past week provide evidence that faceted snow at the ground is a reactive deep persistent weak layer. Observations suggest that this problematic snowpack structure may be more prevalent in colder, shallower areas north and east in the region. Keep in mind that small avalanches and cornice falls have the potential to step-down to this deeper layer, producing large, destructive avalanches.
Watch for old wind slabs in the alpine, and open \"alpine like\" features at treeline. These slabs may be poorly bonded to underlying crust and surface hoar layers, although the distribution of these layers is uncertain. These old wind slabs may become reactive with afternoon sun, especially on steeper terrain features and solar aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"54dvn","text":"
We are uncertain about where the early-November crust has weak faceted grains above it, and if this layer remains as a problem. Our limited information suggests this problem is more likely found around Pine Pass and the eastern slopes of the Rockies. Given our lack of field observations, the prudent choice is to approach any big open slope with caution, especially slopes that are rocky and have variable snowpack depths.
Although the alpine air temperature isn't as warm as previous days, loose wet avalanches may still be observed on steep sun exposed slopes in the afternoon.
Watch for old wind slabs in the alpine, and open \"alpine like\" features at treeline. These slabs may be poorly bonded to underlying crust and surface hoar layers, although the distribution of these layers is uncertain. These old wind slabs may become reactive with afternoon sun, especially on steeper terrain features and solar aspects.
Watch for old wind slabs in the alpine, and open \"alpine like\" features at treeline. These slabs may be poorly bonded to underlying crust and surface hoar layers, although the distribution of these layers is uncertain. These old wind slabs may become reactive with above freezing temperatures and/or afternoon sun, especially on steeper terrain features and solar aspects.
A facet/crust layer sits near the base of the snowpack. For weeks it has sat dormant, showing no avalanche activity but producing the occasional snowpack test result. We are curious to see whether the weight of the recent snow has awakened this problem. Keep in mind that if a storm slab avalanche triggers/steps down to this layer, the resulting avalanche would be large and destructive.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mu
Very large avalanches over the past week suggest that a buried crust formed in early November and weak snow at the ground are reactive persistent and deep persistent weak layers. We have limited information about the distribution of this snowpack structure in the region. Keep in mind that small avalanches have the potential to step-down to these deeper layers, producing large, destructive avalanches.
A crust sits near the base of the snowpack. Although we haven't had any reports of avalanche activity on this layer during the ongoing warming event, there is potential for large avalanches to be triggered on this layer by:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1h50p","text":"large loads such as cornice falls or smaller loose wet avalanches","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ehn3s","text":"human traffic in thin, rocky areas in the alpine","type":"u
Recent strong southerly winds have likely redistributed snow at upper elevations, building new wind slabs on leeward northerly facing terrain. The warm air coupled with solar radiation may have promoted rapid settlement and accelerated slab development in the recent storm snow on other aspects and elevations. Be especially cautious where new snow may sit over a crust (south aspects) or surface hoar (wind sheltered areas around treeline).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":203,"length":49,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
A crust sits near the base of the snowpack. Although we haven't had any reports of avalanche activity on this layer during the ongoing warming event, there is potential for large avalanches to be triggered on this layer by:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bct5","text":"large loads such as cornice falls or smaller loose wet avalanches","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fmm5u","text":"human traffic in thin, rocky areas in the alpine","type":"u
A crust sits near the base of the snowpack. There is potential for large avalanches to be triggered on this layer by:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4qm7v","text":"large loads such as cornice falls or smaller loose wet avalanches","type":"unordered-list-item","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c5r8t","text":"human traffic in thin, rocky areas in the alpine","type":"u
So here's the story... A crust sits near the base of the snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e1odc","text":"On the one hand, there hasn't been any associated avalanche activity in weeks.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ev0tr","text":"On the other hand, it's surrounded by weak crystals and still producing hard results in snowpack tests.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7mj8g","text":"Although we don't think it presents an avalanche problem under the current conditions, we're reluctant to throw it out altogether, especially with new snow on the horizon. If it were to rear its head, it would most likely be in shallow, rocky areas in the alpine.","type":"unstyled","depth":0,"inlineStyle
So here's the story... A crust sits near the base of the snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fd13i","text":"On the one hand, there hasn't been any associated avalanche activity in weeks.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eaqap","text":"On the other hand, it's surrounded by weak crystals and still producing hard results in snowpack tests.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b2g2t","text":"Although we don't think it presents an avalanche problem under the current conditions, we're reluctant to throw it out altogether, especially with new snow on the horizon. If it were to rear its head, it would most likely be in shallow, rocky areas in the alpine.","type":"unstyled","depth":0,"inlineStyle
Periods of heavy snowfall combined with strong winds are expected to form reactive storm slabs at upper elevations. These slabs will be more sensitive to triggering and larger in size in areas where strong winds have transported the snow into deeper, more cohesive drifts. Natural triggers from heavy snowfall, wind, and cornice falls are a concern with this rapid load.
In the north of the region (e.g., Duffey Lake), a weak layer of sugary faceted grains around a hard melt-freeze crust sits near the base of the snowpack. Be wary of overhead hazards, a large impact (like a cornice failure) could trigger the slope below. There's a lot of uncertainty on the reactivity of this layer, however if this layer is triggered it will likely produce large avalanches. This problem does not exist in the south of the region.
Large to very large avalanches over the past week provide evidence that a buried crust formed in early December and November combined with weak sugary snow at the ground are reactive persistent and deep persistent weak layers. Observations suggest that this problematic snowpack structure may be more prevalent in colder, shallower areas North and in the East in the region. Keep in mind that storm slab avalanches and cornice falls have the potential to step-down to these deeper layers, producing large, destructive avalanches.
Large to very large avalanches over the past week provide evidence that a buried crust formed in early November combined with weak sugary snow at the ground are reactive persistent and deep persistent weak layers. Observations suggest that this problematic snowpack structure may be more prevalent in colder, shallower areas North and in the East in the region. Keep in mind that storm slab avalanches and cornice falls have the potential to step-down to these deeper layers, producing large, destructive avalanches.
A facet/crust layer from early November sits near the base of the snowpack. This layer has shown signs of recent reactivity with explosive control in shallow rocky locations producing large avalanches. It is most likely to be triggered by humans in shallow, rocky areas or in a step-down from a smaller avalanche.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0},{"offset":278,"length":9,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facet#facetcrust-layer"}},"1":{"type":"LINK","mutabilit
Very large avalanches over the past week provide evidence that faceted snow at the ground is a reactive deep persistent weak layer. Observations suggest that this problematic snowpack structure may be more prevalent in colder, shallower areas north and east in the region. Keep in mind that small avalanches and cornice falls have the potential to step-down to this deeper layer, producing large, destructive avalanches.
A crust sits near the base of the snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"abck6","text":"On the one hand, there hasn't been any associated avalanche activity in weeks.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"46ikn","text":"On the other hand, it's surrounded by weak crystals and still producing hard results in snowpack tests.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2i8fn","text":"Although we don't think it presents an avalanche problem under the current conditions, we're reluctant to throw it out altogether, especially with significant new snow accumulations on the horizon. If it were to rear its head, it would most likely be in shallow, rocky areas in the alpine.","type":"unstyled","depth":0,"inlineStyle
A crust exists near the base of the snowpack, and weak, sugary facets have been observed over this crust. We have a lack of decisive data on this layer - it's been showing some results in snowpack tests in some areas, and most reports describe an improving bond to the overlying snow. Although we don't think it presents a problem, without more information we're reluctant to throw it out. The most likely trigger spots are terrain areas with smooth ground cover such as scree slopes, grassy slopes, or rock slabs.
Weak faceted grains near the base of the snowpack have the potential of forming large and destructive avalanches. The most likely place to trigger this layer would be on shallow and rocky slopes. Smaller wind slab avalanches would also have the potential of stepping down to this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":5,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","
Strong southwest winds have formed deep wind slabs at treeline and alpine elevations on lee and crossloaded slopes.
This layer has reached a tipping point. Depending on elevation and aspect, 40-100 cm of snow currently sits above a buried crust from early December. Sugary, facets  and surface hoar around the crust mean persistent slabs are likely reactive, especially to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":158,"length":7,"key":0},{"offset":170,"length":12,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"1":{"type":"LINK","mutability":"