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 sits 50-100 cm deep, within the range for human-triggering.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 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.
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. 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.
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.
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.
If the sun comes out with the forecasted warm temps, cornices may begin to sag and fail.
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.
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.
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.
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.
Beware of wet loose avalanches releasing naturally on steep slopes exposed to the sun.
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 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":"
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.
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 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.
If large cornices release, they can trigger deeper instabilities.
The sudden rise in temperature and solar radiation can be the trigger for cornices.  If large cornices release, they can trigger deeper instabilities.
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.
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.
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.
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.
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.
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":"
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
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.
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",
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.
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
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
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
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":
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.
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.
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.
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.
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
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.
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.
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.
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
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
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.
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
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"
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.
Pockets of soft wind slab may be found in leeward features in the alpine. The underlying crust offers a slick bed surface for avalanches.
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.
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
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.
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":"
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
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.
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).
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.
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.
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":"
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":
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.
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.
","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.
","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.
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.
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.
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.
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.
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":
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.
","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).
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 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.
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.
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.
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.
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.
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.
Recent strong winds have formed widespread wind slabs in lee terrain at upper elevations.
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.
A week of stormy weather has left widespread storm slabs ripe for human triggers. Slabs will be most reactive in wind affected terrain.
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.
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 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.
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.
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.
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.
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.
New snow and extreme winds will form widespread storm slabs reactive to human triggers at all elevations.
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
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":"
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.","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
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.
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 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.
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.
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
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
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
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.
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
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.
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.
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.
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.
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.
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.
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":"
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.
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
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.
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.
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 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.
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":"
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.
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.
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.
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
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.
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.
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.
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":
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.
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.
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.
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.
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 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":
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.
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.
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.
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":"
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":"
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. ","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.
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.
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, 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.
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.
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.
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":"
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.
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.
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.
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
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.
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
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.
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.
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.
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":"
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.
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!
40-80 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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":"
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.
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.
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.
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.
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.
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.
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.
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
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 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.
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.
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.
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.
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":"
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.
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 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.
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.
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.
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.
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":"
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.
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.
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.
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.
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.
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.
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":"
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":"
New snow falling mid week is being redistributed by primarily southwest winds into lee terrain.
Wind slabs will be most likely be 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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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":"
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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
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.
If the sun pokes out and alpine temperatures are above freezing wet loose avalanches may occur.
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
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.
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
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
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
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
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":"
There is currently 90-120 cm of snow sitting on top of weak a layer of sugary facets that developed above a crust which formed in early November. It is most likely to be reactive to human triggers on south facing slopes and on steep, shallow, rocky, snowpack areas in the alpine.
A crust sits near the base of the snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"pl5b","text":"On the one hand, there hasn't been any associated avalanche activity in weeks.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"72juq","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":"de1m","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 accumulations of 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
As freezing levels drop, storms slabs will develop at high elevations where dry snow accumulates.
Loose wet avalanche activity may persist in the northeast of the region where temperatures remain elevated Sunday. Pinwheeling is a great indicator of a warming snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":138,"length":9,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabi
So here's the story... 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 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
The wet-loose problem will remain in areas where the snowpack is not frozen and/or rain saturates the snowpack.
ingering wind slabs may remain reactive to human triggers on a variety of aspects.
A facet/crust layer (from Nov 5 rains) sits near the base of the snowpack. For weeks it has sat dormant, showing no avalanche activity but recently producing large avalanches in shallow rocky areas from explosive control in a neighbouring region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0}],"data":{}},{"key":"b5uqv","text":"This layer may become reactive with the new load of snow or if triggered by a smaller avalanche in a step down.  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":101,"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
Large avalanches earlier this week provided evidence that a buried crust formed in early December and November combined with weak sugary snow at the ground are reactive to large loads and stress to the snowpack. This problematic snowpack structure may be more prevalent in colder, shallower areas North and in the East in the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ec8v6","text":"Cornice falls or smaller avalanches in motion may have the potential to step-down to these deeper layers, producing large, destructive avalanches.
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 significant accumulations of 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
Large to very large avalanches over the past week provide evidence that a buried crust formed in early November and weak 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 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 sits near the base of the snowpack. For weeks it has sat dormant, showing no avalanche activity but producing the occasional hard result in snowpack tests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0}],"data":{}},{"key":"df26","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f1qfe","text":"We're curious to see whether the new loading from the current storm will cause it to wake up. 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":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mu
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 hard result in snowpack tests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0}],"data":{}},{"key":"4udl0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3gijv","text":"We're curious to see whether the new loading from the current storm will cause it to wake up. 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":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mu
A facet/crust layer (from Nov 5 rains) sits near the base of the snowpack. For weeks it has sat dormant, showing no avalanche activity but producing the occasional hard result in snowpack tests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0}],"data":{}},{"key":"do7lf","text":"This layer may become reactive with the new load of snow or if triggered by a smaller avalanche in a step down.  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":101,"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
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. There is a lot of uncertainty on the reactivity of this layer - we're keeping it on our radar because we don't have enough information. Be wary of overhead hazards, a large impact (like a cornice failure - see avalanche summary) could trigger the slope below. Keep in mind if this layer is triggered, it will likely produce large avalanches. This problem does not exist in the south of the region.
A facet/crust layer from November rains (Nov 5 Crust) 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.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0}],"data":{}},{"key":"b2g2t","text":"We may see this layer \"wake-up\" with the new load or be triggered by a smaller avalanche in a step down.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":94,"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
The last storm pushed the persistent slab problem over the tipping point resulting in very large avalanches Saturday & Sunday. 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.
Triggering wind slab avalanches remains possible at upper elevations, especially on freshly wind loaded terrain features.
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.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":63,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","
40-60 cm of snow sits above a layer of surface hoar and/or crusts. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":39,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
0-50 cm of snow currently sits above a buried crust from early December. Sugary, facets above and/or below the crust may weaken the bond and the persistent slab may become reactive, especially to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":82,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
Large avalanches earlier this week provided evidence that a buried crust formed in early December and November combined with weak sugary snow at the ground are reactive to large loads and stress to the snowpack. This problematic snowpack structure may be more prevalent in colder, shallower areas North and in the East in the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ec8v6","text":"Cornice falls may have the potential to step-down to these deeper layers, producing large, destructive avalanches.
A widespread melt freeze crust from the first week of December exists up to 2500m in places.  New snow from Wednesday night will bury this layer in 30-55cm of recent snow.  This layer has shown signs of reactivity with explosive control work, remote avalanches, and numerous snow-pit results showing easy \"sudden\" or \"pop\" results.
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 problematic.
Weak snow around the early November crust was a problem earlier this season. The layer is now buried 50-150 cm deep. Recent weather trends suggest it is becoming less likely to trigger a large avalanche on this layer, however given the limited field observations to confirm this it's best to approach big slopes with caution. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b6opl","text":"This layer is most likely to be reactive to human triggers on south facing slopes and on steep, shallow, rocky, snowpack areas in the alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dub35","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7aud4","text":"
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 hard result in snowpack tests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0}],"data":{}},{"key":"82aqt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ci12p","text":"We're curious to see whether the new loading from the current storm will cause it to wake up. 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":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mu
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 facet/crust layer (from Nov 5 rains) sits near the base of the snowpack. For weeks it has sat dormant, showing no avalanche activity but producing the occasional hard result in snowpack tests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0}],"data":{}},{"key":"b5uqv","text":"This layer may become reactive with the new load of snow or if triggered by a smaller avalanche in a step down.  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":101,"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
A facet/crust layer from November rains (Nov 5 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.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0}],"data":{}},{"key":"b2g2t","text":"We may see this layer \"wake-up\" with the new load or be triggered by a smaller avalanche in a step down.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":94,"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
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 will awaken 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
Recent storms have pushed the persistent slab problem over the tipping point resulting in very large avalanches. A 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.
A crust/facet layer sits near the base of the snowpack. It is surrounded by weak crystals and produces hard results in snowpack tests. In shallow, rocky areas in the alpine, it may remain at a depth triggerable by humans. Last week a natural cornice fall triggered a size 3 avalanche on this layer proving it's still a player. With the cooling temperatures and hardening snowpack, we don't think we will see avalanche activity on it at the moment, but it's definitely still on the radar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eb11","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cnim","text":"
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.  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
A rain crust from last week is down 40-75cm. This rain crust is widespread and can be found to mountain top throughout the regions.  It appears to be 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 some sheltered treeline locations there is also a buried surface hoar layer that is buried down 35-60cm.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":60,"length":12,"key":1}],"data":{}},{"key":"b0t93","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9srun","text":"These layers have shown signs of instability in recent days, including remote avalanches, accidental skier triggered avalanches, cracking and easy sudden snow test results.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"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","mutab
40-60 cm of snow currently sits above a buried crust from early December. Sugary, facets above and/or below the crust may weaken the bond and the persistent slab may become reactive, especially to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":82,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
A facet/crust layer from November rains (Nov 5 Crust) 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.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":2,"length":17,"key":0}],"data":{}},{"key":"b2g2t","text":"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":76,"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
A buried layer of surface hoar is now primed for human triggering. 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.
40-60 cm of snow currently sits above a buried crust from early December. A cohesive slab will likely exist with forecast snow, strong wind, and warming. Sugary, facets above and/or below the crust may weaken the bond and the persistent slab may become reactive, especially to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":162,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
Weak faceted grains may overly a melt-freeze crust near the base of the snowpack. There is uncertainty on where this layer remains a problem in the region, but large avalanches have recently occurred in the northern half of the region. The most likely area to trigger it would be in thin, rocky snowpack areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":4,"length":16,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","
A weak layer of surface hoar down 50-100 cm has been reactive to human triggers in the past week.
A couple of problematic layers may be found around 100 to 200 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. Sporadic avalanche activity on these layers this week means there is still potential for avalanches to step down to these layers.
A 20-50 cm thick persistent slab sits above the early December crust. Around this crust are facets and potentially surface hoar in sheltered areas. Human-triggered avalanches and storm slabs have recently stepped-down to this layer producing size 2 avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":92,"length":6,"key":0},{"offset":115,"length":12,"key":1}],"data":{}},{"key":"3vpsj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
This storm may well push the persistent slab problem over the tipping point resulting in large and surprisingly touchy 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.
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 avalanches may also have the potential of stepping down to this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":5,"length":15,"key":0},{"offset":246,"length":13,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=+facets#basal-facets"}},"1":{"type":"LINK","mutabilit
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":{}},{"key":"80dbr","text":"New snow is rapidly settling with warm temperatures into a soft slab. Assess how each layer of new storm snow is bonding to previous layers.  Periods of heavy loading overnight Friday may create storm slab instabilities.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"euo8p","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=lee#leeward"}},"1":{"type":"LINK","mutabilit
40-60 cm of snow sits above a layer of surface hoar and/or crusts from early December. The new storm snow could easily step down to this interface, with surprising propagation.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":39,"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  or crust layer from early December is now down 40-60 cm. Storm slab avalanches have and may easily step down to this layer, with surprising propagation.","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/glossary?q=surface+hoar#surface
A weak layer of surface hoar  or crust layer from early December is now down 40-80 cm. Storm slab avalanches may easily step down to this layer, with surprising propagation.","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/glossary?q=surface+hoar#surface
0-50 cm of snow currently sits above a buried crust from early December. A cohesive slab will likely exist with forecast snow, strong wind, and warming. Sugary, facets above and/or below the crust may weaken the bond and the persistent slab may become reactive, especially to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":162,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
The last storm pushed the persistent slab problem over the tipping point resulting in very large avalanches Saturday & Sunday. Monday night's storm may add increased vigor to this problem. 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.
A Crust buried near the bottom of the snowpack has been responsible for some very large explosive triggered avalanches up to size 4.
A powerful storm will cross the region Monday and Monday night. Snowfall totals by Monday 4 PM are expected to be 10 to 20 cm, with another 20 to 40 cm expected Monday night. Storm and wind slabs will build over the day and will likely be reactive to riders.
We are uncertain about where the early-November crust has weak faceted grains above it, and if this layer remains as a problem. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fmob4","text":"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.
Cornices are large and looming along many ridgelines and have likely grown with the recent wind.
A widespread melt freeze crust from the first week of December exists up to 2500m in places.  This layer extends to 2200m and can be felt as a thick crust n the snow.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":25,"length":5,"key":0}],"data":{}},{"key":"57v6c","text":"Another persistent layer of surface hoar crystals developed in the subsequent clear spell.  This layer is most intact in sheltered treeline locations.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":28,"length":12,"key":1}],"data":{}},{"key":"fnici","text":"On Friday morning the layers will be buried by 35-65cm of snow.  Additional forecast snowfall of 20-50cm on Friday will increase the load, making this layer likely to \"wake-up\" in natural, human triggered and step-down avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7ahqg","text":"This layer has shown signs of reactivity with explosive control work, remote avalanches, and numerous snow-pit results showing easy \"sudden\" or \"pop\" results.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=crusts#crusts-are-hard-layers-of-snow-usually-created-by-liquid"}},"1":{"type":"LINK","mutab
A rain crust from the first week of December is now buried 50-75cm.  It has shown varying results in snow pit tests and may have a thin layer of sugary facet crystals above it.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bo51k","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"535a3","text":"In sheltered treeline locations there may also be a surface hoar crystals from a period of clear weather that is also buried 50-75cm.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2gb2u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7539m","text":"Increasing load and slab properties on these weak layers may cause them to \"wake-up\" and the resulting avalanches would be large.
A rain crust from last week is down 30-70cm. This rain crust is widespread and can be found to mountain top throughout the regions.  It appears to be most reactive on southern aspects where a thin layer of sugary facet crystals overlays it. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":7,"length":5,"key":0},{"offset":176,"length":7,"key":1}],"data":{}},{"key":"8dkvl","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fetpj","text":"In some sheltered treeline locations there is also 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":60,"length":12,"key":2},{"offset":172,"length":7,"key":3}],"data":{}},{"key":"b0t93","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9srun","text":"These layers have shown signs of instability in recent days, including remote avalanches, accidental skier triggered avalanches, cracking and easy sudden snow test results.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"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/terms/aspect"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"3":{"type
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.
In the north of the region, a crust/facet layer sits near the base of the snowpack. It is surrounded by weak crystals and produces hard results in snowpack tests. In shallow, rocky areas in the alpine, it may remain at a depth triggerable by humans. On December 1, a natural cornice fall triggered a size 3 avalanche on this layer proving it is triggerable by large loads. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7ckmi","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a4f8c","text":"This layer is not a problem in the south of the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eb11","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cnim","text":"
Weak faceted grains may overly a melt-freeze crust near the base of the snowpack. There is uncertainty on where this layer remains a problem in the region, but large avalanches have recently occurred in the northern half of the region. The most likely area to trigger it would be in thin, rocky snowpack areas.
A storm slab problem will develop as up 20 cm fresh snow falls by Saturday morning. Southwesterly winds will encourage slab development.
I'm not sure if this surface hoar and crust combo extends into the alpine. However at lower elevations it is reactive down 50 to 70cm below the surface.
his layer has reached a tipping point in parts of the region. 40-70 cm of snow currently sits above a weak layer from early December. Combinations of sugary facets , surface hoar and/or a crust mean persistent slabs are likely reactive, especially to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":158,"length":7,"key":0},{"offset":167,"length":12,"key":1}],"data":{}},{"key":"deiup","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"1":{"type":"LINK","mutability":"
A widespread melt freeze crust from the first week of December extends to 2200m and can be felt as a thick crust in the snow.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":25,"length":5,"key":0}],"data":{}},{"key":"57v6c","text":"Another persistent layer of surface hoar crystals developed in the subsequent clear spell.  This layer is most intact in sheltered treeline locations.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":28,"length":12,"key":1}],"data":{}},{"key":"fnici","text":"On Friday morning the layers will be buried by 40-80cm of snow, more in heavily wind loaded areas.Be especially caution of thin to fat areas, where triggering a large destructive avalanche is possible.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7ahqg","text":"These layers have shown signs of instability in recent days, including large avalanches from explosive control, human triggered avalanches, step down 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.  Additionally, 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":440,"length":9,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=crusts#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","mutabilit
More snow is expected Saturday night into Sunday morning, with strong southwest wind. Use particular caution immediately adjacent to ridges, where the slabs will likely be thickest and touchiest. The storm snow may also be touchy in sheltered terrain features, so check for the bond of the snow prior to committing to avalanche terrain.
A couple problematic layers exist around 50 to 100 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. Large avalanches have been triggered on these layers. The likelihood of triggering them will increase with further snow load on Saturday night.
Storm slabs to size 2 continue to release naturally and remain sensitive to human triggering.  The new snow from Saturday night may increase reactivity.
A couple problematic layers exist around 40 to 80 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. There has not been notable avalanche activity on these layers but Saturday night's snow accumulation will increase the likelihood of triggering them.
A crust that was buried in early December is now down 80-120 cm in the alpine but is closer to the surface at and below treeline elevations. Around this crust are facets and potentially surface hoar in sheltered areas. Human triggered avalanches and storm slabs may step down to this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":163,"length":6,"key":0},{"offset":186,"length":12,"key":1}],"data":{}},{"key":"8jopp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"esvf7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
A buried layer of surface hoar is now primed for human triggering. Monday night's storm is certain to add increased vigor to this problem. 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.
Storm slabs to size 2 continue to release naturally and remain sensitive to human triggering.
A couple problematic layers exist around 40 to 80 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. There has not been notable avalanche activity on these layers but Monday's storm could be the tipping point in the south of the region.
This storm pushed the persistent slab problem over the tipping point resulting in very large avalanches Sunday. 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.
A rain crust from the first week of December is now buried 40-75cm.  It has shown varying results in snow pit tests and may have a thin layer of sugary facet crystals above it.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"535a3","text":"In sheltered treeline locations there may also be a surface hoar crystals from a period of clear weather that is also buried 50-75cm.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2gb2u","text":"These layers have shown signs of instability in recent days, including intentionally triggered avalanches, accidental skier triggered avalanches, cracking and easy sudden snow test results.  As these layers are more deeply buried, they may be harder 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":400,"length":9,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
his layer has reached a tipping point in parts of the region. 70-110 cm of snow currently sits above a weak layer from early December. Combinations of sugary facets , surface hoar and/or a crust mean persistent slabs are likely reactive, especially to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":159,"length":7,"key":0},{"offset":168,"length":12,"key":1}],"data":{}},{"key":"deiup","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"1":{"type":"LINK","mutability":"
This storm pushed the persistent slab problem over the tipping point resulting in very large avalanches Saturday & Sunday. 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.
A couple problematic layers exist around 50 to 100 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. Large avalanches have been triggered on these layers.
A buried layer of surface hoar is now primed for human triggering. This layer is thought to be widespread and was quite sensitive to triggering before Saturday Night's big storm. This interface is capable of producing large to very large avalanches that are capable of connecting bigger pieces of terrain.
Depending on elevation and aspect, 50-100 cm of snow currently sits above a buried crust from early December. Sugary, facets above and/or below the crust may weaken the bond and the persistent slab may become reactive, especially to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":118,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK",
The last storm pushed the persistent slab problem over the tipping point resulting in very large avalanches Saturday & Sunday. Monday night's storm is certain to add increased vigor to this problem. 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.
The recent 30 to 40 cm of snow will take some time to stabilize. The snow fell with strong and variable wind, so deep and touchy deposits are likely found near ridges too. Don't let good visibility lure you into dangerous avalanche terrain.
A buried layer of surface hoar is now primed for human triggering. The slab rests on a persistent weak layer which has the capacity to  propagate avalanches across terrain features. A crust that formed in November is near the base of the snowpack is also a concern for human triggering.
The recent 30 to 40 cm of snow may take a bit longer to bond to the snowpack. The snow fell with strong and variable wind, so deep and touchy deposits are likely found near ridges too. Don't let good visibility lure you into dangerous avalanche terrain.
Weak layers of surface hoar and/or faceted grains may be found above a hard melt-freeze crust. Where these weak layers exist, they are at a prime depth for humans to trigger them. Large avalanches have recently been triggered on these layers in the north of the region. Recent reports suggest the weak layers may be less prevalent in the south of the region, but they may still exist in localized pockets.
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 they may still exist in localized pockets. There is uncertainty in how warm alpine air will affect the snowpack. It is possible that the warming may increase the potential of humans triggering these layers.
Recent storms have pushed the persistent slab problem over the tipping point resulting in very large avalanches. A slab rests on a persistent weak layer which has the capacity to propagate avalanches across terrain features.
20-50 cm below the surface sits the early December crust. Around this crust are facets and potentially surface hoar in sheltered areas. Human-triggered avalanches and storm slabs have recently stepped-down to this layer producing size 2 avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":80,"length":6,"key":0},{"offset":103,"length":12,"key":1}],"data":{}},{"key":"3vpsj","text":"Basal facets 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 avalanches may also have the potential of stepping down to this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":0,"length":12,"key":2},{"offset":209,"length":13,"key":3}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar","target":"_blank","url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=basal+facets"}},"3":{"type":"LINK","mutabilit
A weak layer may exist around 50 to 100 cm deep, composed of weak and sugary faceted grains above a hard melt-freeze crust. It has been over a week since the last reported avalanche on this layer, but the possibility remains of triggering it where it exists.
A couple problematic layers exist around 40 to 90 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. Where these layers exist, they are at a prime depth for humans to trigger them.
A couple problematic layers exist around 50 to 100 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. The possibility exists that humans could trigger this layer where it exists in the mountains.
We are expecting to wake up to snow accumulations of around 30 to 40 cm by Tuesday morning. Strong wind from variable directions may produce even deeper pockets. This snow will be reactive to riders and need time to bond to the snowpack. Don't let good visibility lure you into dangerous avalanche terrain.
A a variable but reactive weak layer exists a bit deeper than our recent storm snow. Depending on your elevation and location in the region, it may present as either surface hoar (especially reactive) or a mix of facets and crust (not much better!) Wind or storm slab releases may step down to this layer to create even larger avalanches.
A couple problematic layers exist around 50 to 100 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. A warming trend is forecast and there is uncertainty in how it will affect the snowpack. It is possible that the warming may make it more possible for humans to trigger these layers.
Small inputs of recent snow with overnight wind is keeping the windslab problem fresh. Fresh slabs will be especially sensitive when touched by the sun for the first time.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6qhbv","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f61os","text":"Older wind slabs are taking time to bond to underlying snow and may be found on a variety of aspects due to previous wind from various directions.
eak layers of feathery surface hoar and/or sugary faceted grains above a hard melt-freeze crust remain buried in the snowpack around 40 to 90 cm deep. Although these layers are slowly bonding to the snowpack, the possibility remains that a rider could trigger them.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"deiup","text":"
Weak layers of feathery surface hoar and/or sugary faceted grains may be found above a hard melt-freeze crust around 50 to 100 cm deep. Although avalanche activity hasn't been reported on these weak layers for over a week, the possibility remains that a rider could trigger them, where they exist.
A couple of problematic layers may be found around 50 to 150 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. With the addition of a significant load of new snow, large avalanches may run naturally on these layers.
30-50 cm of recent snow has been redistributed at upper elevations by overnight wind from the southwest. Recent snow may become increasingly sensitive to triggering when touched by the sun for the first time.
Higher elevation terrain is heavily wind affected, with wind slabs likely found on north and east facing slopes.
This layer has reached a tipping point. Depending on elevation and aspect, 80-150 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":"
A weak layer of surface hoar is down 40-60 cm and seems to be very reactive to human triggers in the Nass Valley. At the moment the reports are localized. I'm uncertain where else it exists regionally. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":15,"length":13,"key":0}],"data":{}},{"key":"ghtc","text":"A crust that was buried in early December is now down 80-120 cm and counting.  Around this crust are facets and potentially surface hoar in sheltered areas. Human triggered avalanches and storm slabs may step down to this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":101,"length":6,"key":1}],"data":{}},{"key":"8jopp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"esvf7","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":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#
0-100 cm of snow currently sits above a weak layer from early December. Combinations of sugary facets , surface hoar and/or a crust mean persistent slabs can produce large destructive avalanches.  Although naturally triggered avalanches have tapered, it remains possible to tigger this layer in thin to fat zones, with a cornice collapse, with a step-down avalanche or on slopes that have received significant wind transport.  This layer appears to be more concerning above 1700m and on northerly aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":96,"length":7,"key":0},{"offset":105,"length":12,"key":1},{"offset":347,"length":9,"key":2}],"data":{}},{"key":"deiup","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=persistent+weak+laye#surface-hoar"}},"2":{"type":"LINK","mutabilit
Smaller storm slabs in motion may step-down to deeper layers resulting in very large avalanches. This problem can be avoided through conservative terrain choices.
This layer reached a tipping point with recent new snow as evidenced by the recent natural avalanche cycle.  Although naturally triggered avalanches have tapered, it remains possible to tigger this layer in thin to fat zones, with a step-down avalanche or on slopes that have received significant wind transport.  Depending on elevation and aspect, 60-150 cm of snow currently sits above buried weak layers from early December. Sugary, facets  and surface hoar around the crust mean persistent slabs remain reactive, especially with large triggers or in a shallow snowpack.  This layer appears to be more concerning above 1700m and on northerly aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":233,"length":9,"key":0},{"offset":436,"length":7,"key":1},{"offset":448,"length":12,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=step+down#step-down-avalanche"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"2":{"type":"LINK","mutability":"
A 20-50 cm thick persistent slab sits above the early December crust. Around this crust are facets and potentially surface hoar in sheltered areas. Human-triggered avalanches have recently stepped-down to this layer producing size 2 avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":92,"length":6,"key":0},{"offset":115,"length":12,"key":1}],"data":{}},{"key":"3vpsj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
A weak layer of surface hoar is buried 40-70cm below recent storm snow.  It was more reactive in the Nass Valley, but also reported at ridgecrests and below in the Shames area. At the moment the reports are localized, may include two different layers & we are unclear where else it exists regionally. New snow is not expected to bond well to this surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":15,"length":13,"key":0}],"data":{}},{"key":"ghtc","text":"A crust that was buried in early December is now down 90-200 cm and counting.  Around this crust are facets and potentially surface hoar in sheltered areas. Human triggered avalanches and storm slabs may step down to this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":101,"length":6,"key":1}],"data":{}},{"key":"8jopp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"esvf7","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":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#
A 30-70 cm thick persistent slab sits above the early December crust. Around this crust are facets and potentially surface hoar in sheltered areas. Human-triggered avalanches have recently stepped-down to this layer producing size 2 avalanches in the last week.  This bond is gaining strength, but may still be reactive in steep, convex or unsupported terrain or in a step-down avalanche.    ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":92,"length":6,"key":0},{"offset":115,"length":12,"key":1},{"offset":368,"length":9,"key":2}],"data":{}},{"key":"3vpsj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar","target":"_blank","url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"2":{"type":"LINK","mutabilit
Two persistent weak layers buried in early/mid Dec. are now 80 to 150 cm below the surface. The form and distribution of these layers are HIGHLY VARIABLE and have created conditions that can vary significantly from one valley to the next .
Watch for new snow and wind to form reactive slabs on leeward terrain in the alpine and near ridgetops.
Fresh snow with moderate to strong southwest winds will be forming fresh storm slabs. These slabs may be the most reactive in wind loaded areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9d0kt","text":"Keep in mind that this fresh snow could also be hiding wind slabs that may still be reactive to human triggers.
Wind slabs in motion and cornice falls have recently produced some very large avalanches failing on a crust down around 150 cm. Human triggering of this layer is most likely in steep, rocky slopes with a shallow or thin to thick snowpack.
Shifting winds have redistributed recent snow into wind slabs on a range of aspects at higher elevations. Remain cautious where wind transport appears recent and where upside-down snow quality is evident.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":168,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK"
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.  With the addition of a significant load of new snow, avalanches may run naturally on these layers on Friday.
Wind loaded pockets below ridge crests and rollovers may be reactive to human triggers. Watch for localized reverse-loading on south-facing slopes due to recent northerly winds.
Weak layers of feathery surface hoar and/or sugary faceted grains above a hard melt-freeze crust remain buried in the snowpack around 50 to 100 cm deep. Although avalanche activity hasn't been reported on these weak layers for over a week, the possibility remains that a rider could trigger them, where they exist.
Lingering wind slabs may remain reactive to human triggers on a variety of aspects.
A 30-70 cm thick persistent slab sits above the early December crust. Around this crust are facets and potentially surface hoar in sheltered areas. Human-triggered avalanches have stepped-down to this layer producing size 2 avalanches in the last week.  This bond is gaining strength, but may still be reactive in steep, convex or unsupported terrain or in a step-down avalanche or cornice collapse.    ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":92,"length":6,"key":0},{"offset":115,"length":12,"key":1},{"offset":359,"length":9,"key":2}],"data":{}},{"key":"3vpsj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar","target":"_blank","url":"https://www.avalanche.ca/glossary?q=surface+hoar#surface-hoar"}},"2":{"type":"LINK","mutabilit
0-100 cm of snow currently sits above a weak layer from early December. Combinations of a  crust, sugary facets , and/or surface hoar mean persistent slabs can produce large destructive avalanches.   It remains possible to tigger this layer in thin to fat zones, with a cornice collapse, with a step-down avalanche or on slopes that have received significant wind transport.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":91,"length":6,"key":0},{"offset":106,"length":7,"key":1},{"offset":122,"length":12,"key":2},{"offset":296,"length":9,"key":3}],"data":{}},{"key":"5jdlq","text":"In very shallow snowpacks, basal facets and a crust / facet layer from early November remain on our radar.   Large and very large avalanches were reported on this layer last week from one of our nearest neighbours.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"deiup","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=crust#crusts"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=persistent+weak+laye#surface-hoar"}},"3":{"type":"LINK","mutabilit
A weak layer composed of weak and sugary faceted grains above a hard melt-freeze crust exists around 60 to 100 cm deep. It has been over a week since the last reported avalanche on this layer, but the likelihood of triggering it may increase during this stormy period.
A 30-80 cm thick persistent slab sits above the early December crust. Around this crust are facets and potentially surface hoar in sheltered areas. Human-triggered avalanches have stepped-down to this layer producing large avalanches in the last week.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":92,"length":6,"key":0},{"offset":115,"length":12,"key":1}],"data":{}},{"key":"3vpsj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
Recent storms have pushed the persistent slab problem over the tipping point resulting in very large avalanches. A slab rests on two persistent weak layer which has the capacity to propagate avalanches across terrain features.
Numerous weak layers may exist in the top half of the snowpack, including surface hoar and faceted grains over a melt-freeze crust. These layers were recently triggered in riding areas north of Terrace and the likelihood of avalanches on these layers will increase during this stormy period.
Smaller storm slabs in motion may step-down to deeper layers resulting in very large avalanches.   ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"56fpu","text":"This problem can be avoided through conservative terrain choices.
Winds have shifted from southwesterly to northerly. Watch for reverse-loading on south-facing slopes in areas where winds are sufficiently strong to move snow around.
Higher elevation terrain is heavily wind affected.  While wind slabs may be found on all aspects, north and east facing slopes are likely to be most problematic.
The heavy load of storm snow could be stressing weak layers 100-200 cm beneath the surface and produce very large avalanches that run to the ends of avalanche paths.
Two persistent weak layers buried in early/mid-December are now 100 to 180 cm below the surface. The form and distribution of these layers are HIGHLY VARIABLE and have created conditions that can vary significantly from one valley to the next.
Depending on elevation and aspect, 40-150 cm of snow currently sits above buried weak layers from early December. Buried surface hoar and sugary facets  around the crust mean persistent slabs remain on our radar and may be triggered with large triggers or in a shallow snowpack.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":121,"length":12,"key":0},{"offset":145,"length":7,"key":1},{"offset":164,"length":5,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=persistent+weak+laye#surface-hoar"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"2":{"type":
A couple problematic layers may be found around 50 to 100 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. There is uncertainty in how warm alpine air will affect the snowpack. It is possible that the warming may increase the potential of humans triggering these layers.
This layer was touchy through last weekend producing large avalanches. The slab rests on a persistent weak layer which has the capacity to propagate avalanches across terrain features.
A slab rests on a persistent weak layer which has the capacity to  propagate avalanches across terrain features. A weak layer of surface hoar buried in the middle of the snowpack as well as a crust near the base of the snowpack are both a concern for human triggering.
0-100 cm of snow currently sits above a weak layer from early December. Combinations of sugary facets , surface hoar and/or a crust mean persistent slabs are likely reactive, especially to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":96,"length":7,"key":0},{"offset":105,"length":12,"key":1}],"data":{}},{"key":"deiup","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"1":{"type":"LINK","mutability":"
A weak layer of surface hoar is down 60-100 cm and seems to be very reactive in the Nass Valley. At the moment the reports are localized. I'm uncertain where else it exists regionally. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":15,"length":13,"key":0}],"data":{}},{"key":"ghtc","text":"A crust that was buried in early December is now down 90-200 cm and counting.  Around this crust are facets and potentially surface hoar in sheltered areas. Human triggered avalanches and storm slabs may step down to this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":101,"length":6,"key":1}],"data":{}},{"key":"8jopp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"esvf7","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":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#
A 20-50 cm thick persistent slab sits above the early December crust. Around this crust are facets and potentially surface hoar in sheltered areas. Human-triggered avalanches have recently stepped-down to this layer producing size 2 avalanches in the last week.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":92,"length":6,"key":0},{"offset":115,"length":12,"key":1}],"data":{}},{"key":"3vpsj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"1":{"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.
Shifting winds have redistributed recent snow into wind slabs on a range of aspects at higher elevations. These should be on a positive track toward stabilizing, but remain cautious where wind transport appears recent and where upside-down snow quality is evident.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":228,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK"
A 20-60 cm thick persistent slab sits above the early December crust. Around this crust are facets and potentially surface hoar in sheltered areas. Human-triggered avalanches have recently stepped-down to this layer producing size 2 avalanches in the last week.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":92,"length":6,"key":0},{"offset":115,"length":12,"key":1}],"data":{}},{"key":"3vpsj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=surface+hoar#surface
A weak layer of surface hoar is buried 40-70cm below recent storm snow.  A surface hoar layer has been reactive in the Nass Valley as well as in the Shames area, and likely exists in most sheltered reeling and below treeline regions. A crust that was buried in early December is now down 90-200 cm and counting.  Around this crust are facets and potentially surface hoar in sheltered areas.  Step-down avalanches are a significant possibility where a small wind slab or cornice fall may trigger a large and destructive avalanche.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":15,"length":13,"key":0},{"offset":335,"length":6,"key":1},{"offset":392,"length":9,"key":2},{"offset":470,"length":7,"key":3}],"data":{}},{"key":"esvf7","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":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=step+down#step-down-avalanche"}},"3":{"type":"LIN
This layer reached a tipping point with recent new snow as evidenced by the recent natural avalanche cycle.  Although naturally triggered avalanches have tapered, it remains possible to tigger this layer in thin to fat zones, with a step-down avalanche or on slopes that have received significant wind transport.  Depending on elevation and aspect, 80-150 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":233,"length":9,"key":0},{"offset":432,"length":7,"key":1},{"offset":444,"length":12,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=step+down#step-down-avalanche"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"2":{"type":"LINK","mutability":"
A couple problematic layers may be found around 50 to 100 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust.
Numerous weak layers may exist in the top half of the snowpack, including surface hoar and faceted grains over a melt-freeze crust. These layers were recently triggered in riding areas north of Terrace and the likelihood remains for avalanche activity anywhere these layers exist.
Numerous weak layers may exist in the top half of the snowpack, including surface hoar and faceted grains over a melt-freeze crust. These layers were recently triggered in riding areas north of Terrace and the likelihood of avalanches across the region will increase during this stormy period.
Previous to this weekend's storm, a buried persistent weak layer has been observed throughout the region 30 to 80 cm below the surface.  The catch is that this layer is present on some slopes, and then absent on nearby slopes.  As the weekend storm progresses, a natural avalanche cycle may begin that could easily include very large persistent slab avalanches.  It will be a good test in the long run, but this is a time to avoid avalanche terrain while the snowpack tries to sort itself out.
Significant variability exists with buried weak layers.  A weak layer of surface hoar is buried 50-90 cm below recent storm snow and has been found in the Shames area up to ridgecrest & elsewhere.  A deeper surface hoar and crust /facet layer was buried in earlier in December and is down 90-200 cm.  Wide propagation and step-down avalanches are a significant possibility with these layers, as was evident in the recent Beaupre avalanche.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":72,"length":13,"key":0},{"offset":231,"length":5,"key":1},{"offset":322,"length":9,"key":2}],"data":{}},{"key":"esvf7","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":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"2":{"type":"LINK","mutabilit
A weak layer of surface hoar is buried 30-60cm below recent storm snow.  It seems to be very reactive in the Nass Valley, but also reported at ridgecrests and below in the Shames area. At the moment the reports are localized, likely includes two different layers & we are unclear where else it exists regionally. New snow is not expected to bond well to this surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":15,"length":13,"key":0}],"data":{}},{"key":"ghtc","text":"A crust that was buried in early December is now down 90-200 cm and counting.  Around this crust are facets and potentially surface hoar in sheltered areas. Human triggered avalanches and storm slabs may step down to this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":101,"length":6,"key":1}],"data":{}},{"key":"8jopp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"esvf7","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":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#
Weak layers of feathery surface hoar and/or sugary faceted grains may be found above a hard melt-freeze crust around 50 to 100 cm deep. Although avalanche activity hasn't been reported on these weak layers for over a week, the likelihood of triggering them may increase during this stormy period.
Wind slabs may be found on a variety of aspects due to shifting wind directions.
0-100 cm of snow currently sits above a weak layer made up of a thick crust, sugary facets , and/or surface hoar from early December.   Recent avalanches have also stepped down to a crust / facet layer near the bottom of the snowpack in an adjacent forecast region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":71,"length":5,"key":0},{"offset":85,"length":7,"key":1},{"offset":101,"length":12,"key":2}],"data":{}},{"key":"deiup","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=crust#crusts"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"2":{"type":"LINK","mutability":"
A weak layer may exist around 50 to 100 cm deep, composed of weak and sugary faceted grains above a hard melt-freeze crust. It has been over a week since the last reported avalanche on this layer, but the likelihood of triggering it may increase during this stormy period.
hard melt-freeze crust is found around 50 to 100 cm deep. The concern is where weak layers of surface hoar and/or faceted grains exist above the crust.  For areas where either of these weak layers exists above the crust, the possibility remains that riders could trigger large avalanches. The potential of triggering these layers will increase during this weekend's stormy period.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"deiup","text":"
Depending on elevation and aspect, 60-150 cm of snow currently sits above buried weak layers from early December. Sugary, facets  and surface hoar around the crust mean persistent slabs remain reactive, especially with large triggers or in a shallow snowpack.  This layer appears to be more concerning above 1700m and on northerly aspects.  This layer proceed avalanches last week.  It remains possible to tigger this layer in thin to fat zones, with a step-down avalanche, with a cornice collapse or on slopes that have received significant wind transport. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":122,"length":7,"key":0},{"offset":134,"length":12,"key":1},{"offset":158,"length":5,"key":2},{"offset":453,"length":9,"key":3}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=persistent+weak+laye#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=crust#crusts"}},"3":{"type":"LINK","mutabilit
Depending on elevation and aspect, 60-150 cm of snow currently sits above buried weak layers from early December. Sugary, facets  and surface hoar around the crust mean persistent slabs remain reactive, especially with large triggers or in a shallow snowpack.  This layer appears to be more concerning above 1700m and on northerly aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":122,"length":7,"key":0},{"offset":134,"length":12,"key":1},{"offset":158,"length":5,"key":2}],"data":{}},{"key":"4rcpm","text":"This layer reached a tipping point earlier in the week as evidenced by the recent natural avalanche cycle.  Although naturally triggered avalanches have tapered, it remains possible to tigger this layer in thin to fat zones, with a step-down avalanche, with a cornice collapse or on slopes that have received significant wind transport. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":232,"length":9,"key":3}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=facets#faceted-snow"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=persistent+weak+laye#surface-hoar"}},"2":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=crust#crusts"}},"3":{"type":"LINK","mutabilit
hard melt-freeze crust is found around 40 to 90 cm deep. The concern is where weak layers of surface hoar and/or faceted grains exist above the crust.  For areas where either of these weak layers exists above the crust, the possibility remains that riders could trigger large avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"deiup","text":"
Weak surface hoar and/or faceted grains sit above a melt-freeze crust 50 to 100 cm deep. Be aware that new snow and wind will be adding additional load to this layer, and it may become reactive again this weekend.
A significant load is being applied to a persistent weak layer that is now buried between 60-150 cm. It is likely that avalanches will run on this layer during this weekend's storm.
A weak layer of surface hoar is buried 40-70cm below recent storm snow.  A surface hoar layer has been reactive in the Nass Valley as well as in the Shames area, and likely exists in most sheltered reeling and below treeline regions. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":15,"length":13,"key":0}],"data":{}},{"key":"ghtc","text":"A crust that was buried in early December is now down 90-200 cm and counting.  Around this crust are facets and potentially surface hoar in sheltered areas. Human triggered avalanches or cornince failures may step down to this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":101,"length":6,"key":1},{"offset":209,"length":9,"key":2}],"data":{}},{"key":"8jopp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"esvf7","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":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary?q=facet#faceted-snow","target":"_blank","url":"https://www.avalanche.ca/glossary?q=facet#faceted-snow"}},"2":{"type":"LINK","muta
Numerous weak layers may exist in the top half of the snowpack, including surface hoar and faceted grains over a melt-freeze crust. These layers were recently triggered in riding areas north of Terrace. The likelihood of avalanches involving these layers will be heightened during and immediately after this stormy period.
Previous to the incoming storm snow, a buried persistent weak layer has been observed throughout the region 30 to 80 cm below the surface.  The catch is that this layer is present on some slopes, and then absent on nearby slopes.  This storm may initiate a natural avalanche cycle that could easily trigger very large persistent slab avalanches.  It will be a good test in the long run, but this is a time to avoid avalanche terrain while the snowpack tries to sort itself out.
A weak layer of surface hoar is down 50-100 cm, and may still triggerable by humans in areas where it exists.
The recent storm added a big load to a deeply buried weak layer. Avalanches on this layer are becoming less likely, however, they will be large and destructive if they do happen.
Weak layers of feathery surface hoar and/or sugary faceted grains may be found above a hard melt-freeze crust around 50 to 100 cm deep. Although avalanche activity hasn't been reported on these weak layers for over a week, the likelihood of triggering will be heightened during this stormy period.
Triggering large avalanches on weaknesses in the lower snowpack remains a possibility. In some areas the concern is weak snow around crusts 60 to 90 cm deep, while in others it is weak snow near the bottom of the snowpack. This problem is best managed by avoiding steep rocky slopes and approaching challenging and complex avalanche terrain with extra caution.
A couple of problematic layers may be found around 100 to 200 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. These layers have shown a downtrend in activity since early last week but there remains potential for avalanches to step down to these layers.
A couple of problematic layers may be found around 80 to 180 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. With the addition of a significant load of new snow, large avalanches may run naturally on these layers.
riggering large avalanches on weaknesses in the lower snowpack remains a possibility. In some areas the concern is weak snow around crusts 50 to 100 cm deep, while in others it is weak snow near the bottom of the snowpack. This problem is best managed by avoiding steep rocky slopes and approaching all avalanche terrain with caution.
Weak surface hoar and/or faceted grains sit above a melt-freeze crust 70 to 100 cm deep. Be aware that new snow and wind have been adding additional load to this layer, and it may become reactive again.
A couple of problematic layers may be found around 100 to 200 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. With the addition of a significant load of new snow, large avalanches may run naturally on these layers.
Weak surface hoar and/or faceted grains sit above a melt-freeze crust 70 to 100 cm deep. This layer is being stressed as new snow slowly but steadily piles up. This incremental loading makes it difficult to predict when the tipping point will be reached. We are currently seeing only sporadic avalanches running on these layers, but they have been large (size 3). The uncertainty around this problem is best managed with conservative terrain selection.
hard melt-freeze crust is found around 50 to 100 cm deep. The concern is where weak layers of surface hoar and/or faceted grains exist above the crust. For areas where either of these weak layers exists above the crust, the possibility remains that riders could trigger large avalanches.
A couple of weak layers exist in the mid snowpack, buried 40-80 cm and 90-150 cm below the surface. They are highly variable in form and distribution and there has not been any associated avalanche activity in the last few days. Incoming snowfall in the forecast for this week will add additional load to these layers and may shed some light on whether they will remain a concern.
Triggering large avalanches on weaknesses in the lower snowpack remains a possibility. In some areas the concern is weak snow around crusts 60 to 90 cm deep, while in others it is 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.
riggering large avalanches on weaknesses in the lower snowpack remains a possibility. 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.
The snowpack across the region has some isolated areas where persistent weak layers remain a problem. These layers include feathery surface hoar and/or sugary faceted grains above a hard crust roughly 50 to 100 cm deep. This is a difficult problem to manage because it does not seem to exist in most terrain, but in the isolated places where it does exist it can produce large destructive avalanches.
Two persistent weak layers buried in early/mid-December are now 90-150 cm below the surface. The form and distribution of these layers are highly variable and may vary significantly from one valley to the next, and between elevations bands.
Two persistent weak layers buried in early/mid-December are now down 90 to 150 cm. The form and distribution of these layers are highly variable and have may vary significantly from one valley to the next, and between elevation bands.
A couple of weak layers exist in the mid snowpack, buried 80-150 cm and 120-200 cm below the surface.  They are highly variable in distribution and trending toward dormancy, but recent isolated avalanche activity on deep layers should keep them on your mind. Some potential currently exists for avalanches in surface layers to step down to a deeper layer to create larger, even more destructive avalanches.
The snowpack across the region has some isolated areas where persistent weak layers linger, including surface hoar and/or facets above a crust 50 to 100 cm below the surface. This is a difficult problem to manage because it does not seem to exist in most terrain, but in the isolated places where it does exist it can produce large destructive avalanches.
Weak surface hoar and/or faceted grains sit above a melt-freeze crust 70 to 100 cm deep. This layer is being stressed as new snow slowly but steadily piles up. This incremental loading makes it difficult to predict when the tipping point will be reached. We are currently seeing only sporadic avalanches running on these layers, but they have been large. The uncertainty around this problem is best managed with conservative terrain selection.
A couple of problematic layers may be found around 80 to 180 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. With the addition of a significant load of new snow, large avalanches may run naturally on these layers. This problem seems to be most prevalent in the north of the region around Duffy Lake.
A persistent weak layer exists throughout the region 50-120 cm below the surface.  The catch is that this layer is present on some slopes, and then absent on nearby slopes. Over the past week or so this problem has evolved into a 'low probability/high consequence' scenario that continue to demand careful terrain selection and diligent travel practices.
riggering large avalanches on weaknesses in the lower snowpack remains a possibility. In some areas the concern is weak snow around crusts 50 to 100 cm deep, while in others it's weak snow near the bottom of the snowpack. This problem is best managed by avoiding steep rocky slopes and approaching avalanche terrain with caution.
Buried weak layers are adjusting to the load of the new snow and could still be reactive to human triggering. In the Shames area the main concern is a layer of surface hoar 75-125 cm below the surface, while further north there are deeper layers that pose a low likelihood - high consequence scenario. Conservative terrain choices is the best way to manage this problem.
A weak layer of surface hoar is down 50-100 cm. They are highly variable in form and distribution and have not been associated with recent avalanche activity. Incoming snowfall in the forecast for this week will add additional load to these layers and may shed some light on whether they will remain a concern.
A couple of problematic layers may be found around 80 to 180 cm deep primarily in the north of the region (e.g. Duffey, Hurley), including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. Although the likelihood of triggering is reducing, the consequences of doing so would be high.
A weak layer of surface hoar that was buried around Christmas is now down about 50-80 cm and is most prevalent at treeline and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5rgbr","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1capq","text":"Two more persistent weak layers buried in early/mid-December are now 90-150 cm below the surface. The form and distribution of these layers are highly variable and may vary significantly from one valley to the next, and between elevation bands.
riggering large avalanches on weaknesses in the lower snowpack remains a possibility. In some areas the concern is weak snow around crusts 50 to 100 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.
Weak surface hoar and/or faceted grains sit above a melt-freeze crust 70 to 100 cm deep. This layer has been steadily stressed as new snow slowly piled up over the past week.
Weak surface hoar and/or faceted grains sit above a melt-freeze crust 70 to 100 cm deep. The likelihood of triggering a persistent slab has reduced, but the consequences of doing so remain high.
A persistent weak layer exists throughout the region 50-120 cm below the surface.  The catch is that this layer is present on some slopes, and then absent on nearby slopes. Over the past week or so this problem has evolved into a 'low probability/high consequence' scenario that demands careful terrain selection and diligent travel practices.
A couple of weak layers exist in the mid snowpack, buried 50-80 cm and 90-150 cm below the surface. They are highly variable in form and distribution and have not been associated with avalanche activity in recent days. Incoming snowfall in the forecast for this week will add additional load to these layers and may shed some light on whether they will remain a concern.
A weak layer lurks deep in the snowpack. Avalanches on this layer are becoming less likely, however they will be large and destructive if they do happen.
A weak layer of surface hoar that was buried around Christmas is now down about 40-80 cm and is most prevalent at treeline and below treeline. This layer remains at a depth triggerable by skiers, sleds and wind slab avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7ji8v","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"62lfc","text":"A deeper persistent weak layer buried in early/mid-December is now down 90 to 150 cm. Triggering these layers require large loads such as explosives or other avalanches in motion. The result of a step down to these layer would be large and destructive.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":196,"length":9,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
A persistent weak layer exists throughout the region 50-120 cm below the surface. In most places it looks like the overlying snow is gaining strength and human triggering is trending towards unlikely.  However, areas around the Pine Pass seem to remain problematic and there has been some recent large avalanche activity on this interface.
A weak layer of surface hoar that was buried around Christmas is now down about 40-80 cm and is most prevalent at treeline and below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7ji8v","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"62lfc","text":"Two more persistent weak layers buried in early/mid-December are now down 90 to 150 cm. The form and distribution of these layers are highly variable and have may vary significantly from one valley to the next, and between elevation bands.
A weak layer of surface hoar is down 50-100 cm, and may still be easy to trigger in some areas.
Weak surface hoar and/or faceted grains sit above a melt-freeze crust 70 to 100 cm deep. This layer has been steadily stressed as new snow slowly piled up over the past week. The likelihood of triggering a persistent slab has reduced, but the consequences of doing so remain high.
New snow and extreme winds may overload deeply buried weak layers, resulting in very large avalanches. In the Shames area the main concern is a layer of surface hoar 75-125 cm below the surface, while further north there are deeper layers that pose a low likelihood, high consequence scenario. Choosing conservative terrain away from overhead hazard is the best way to manage this problem.
A persistent weak layer exists throughout the region 80 to 100 cm below the surface. In most places it looks like the overlying snow is gaining strength and human triggering is trending towards unlikely.  However, areas around the Pine Pass may remain problematic.
A weak layer of surface hoar that was buried around Christmas is now down about 40-80 cm and is most prevalent at treeline and below. This layer remains at a depth triggerable by skiers, sleds and wind slab avalanches.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7ji8v","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"62lfc","text":"A deeper persistent weak layer buried in early/mid-December is now down 90 to 150 cm. Triggering these layers require large loads such as explosives or other avalanches in motion. The result of a step down to these layer would be large and destructive.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":196,"length":9,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutabilit
Weak surface hoar and/or faceted grains sit above a melt-freeze crust around 70 to 100 cm deep. The likelihood of triggering a persistent slab has reduced, but the consequence of doing so remains high.
A couple of problematic layers may be found around 100 to 200 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. A few high-consequence avalanches have been triggered by riders in the past few days near Whistler.
A couple of problematic layers may be found around 80 to 180 cm deep. The layers are primarily in the north of the region (e.g. Duffey, Hurley) and include weak layers of surface hoar and faceted grains above a hard melt-freeze crust. The likelihood of triggering a persistent slab has reduced, but the consequence of doing so remains high.
Weak surface hoar and/or faceted grains sit above a melt-freeze crust around 80 to 130 cm deep. The likelihood of triggering a persistent slab has reduced, but the consequence of doing so remains high.
New snow and extreme winds may overload deeply buried weak layers, resulting in very large avalanches. Choosing conservative terrain away from overhead hazard is the best way to manage this problem.
A persistent weak layer exists throughout the region 80 to 90 cm below the surface. In most places it looks like the overlying snow is gaining strength and human triggering is trending towards unlikely.  However, areas around the Pine Pass seem to remain problematic and there has been some recent large avalanche activity on this interface.
A couple of weak layers exist in the mid snowpack, buried 80-150 cm and 120-200 cm below the surface.  They are highly variable in distribution and trending toward dormancy, but they are being tested by a load of new snow. Some potential currently exists for avalanches in surface layers to step down to a deeper layer to create larger, much more destructive avalanches.
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 the recent storm snow, and on the surface after rain overnight Thursday followed by a sharp drop in freezing levels.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
A couple of weak layers exist in the mid snowpack, buried 70-120 cm and 110-190 cm below the surface. They are highly variable in distribution and trending toward dormancy, but they are being tested by a load of new snow. Some potential currently exists for avalanches in surface layers to step down to a deeper layer to create larger, much more destructive avalanches.
Weak layers of surface hoar exist 65-140 cm deep in sheltered treeline terrain (and below). These layers are highly variable in form and distribution. A widespread buried crust also exists near the base of the snowpack. Although these layers have not been associated with recent avalanche activity, they are being tested by a new load of new snow and potential currently exists for avalanches in surface layers to step down to a deeper layer to create larger, more destructive avalanches.
There are a few different persistent weak layers being reported throughout the region. They are all generally buried between 100-200 cm and tend to consist of either surface hoar or crusts with faceted snow sitting on them.
riggering large avalanches on weaknesses in the lower snowpack remains a possibility, especially since the new snow has added load to these weak layers. 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.
A couple of problematic layers may be found around 100 to 200 cm deep, including weak layers of surface hoar and faceted grains above a hard melt-freeze crust. A few high-consequence avalanches have been triggered by riders in the past few days 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
Triggering large avalanches on weaknesses in the lower snowpack remains a possibility. In some areas the concern is weak snow around crusts 70-140 cm deep, while in others it is 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.
The recent storm added a big load to a deeply buried weak layer. Avalanches triggered on this layer will likely be large and destructive.
A couple of problematic layers may be found around 100 to 200 cm deep, including weak layers of surface hoar and faceted grains above a hard 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
A problematic layer consisting of sugary faceted grains over a crust may be found around 200 cm deep. The likelihood of triggering an avalanche at this interface has reduced, but the consequence of doing so remains high.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8s7k1","text":"This problem is most prominent along the northwestern border of the region and nonexistent in the south.
A problematic layer consisting of sugary faceted grains over a crust may be found around 200 cm deep. This problem is most predominant along the northwestern border of the region. The likelihood of triggering an avalanche at this interface has reduced, but the consequence of doing so remains high.
A weak layer of surface hoar is down 50-100 cm. They are highly variable in form and distribution and have not been associated with recent avalanche activity.  A buried  crust near the base of the snowpack has not shown recent reactivity but remains concern. Incoming snowfall in the forecast for this week will add additional load to these layers and may shed some light on whether they will remain a concern.
riggering large avalanches on weaknesses in the lower snowpack remains a possibility, especially with new snow adding load to these weak layers. 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.
This storm is adding a big load to a deeply buried weak layer. Avalanches triggered on this layer will be large and destructive.
A weak layer of surface hoar buried Jan 11 can be found 40-60 cm deep. There is uncertainty with how this persistent slab problem will react to the load from the new snow and wind. A couple of surface hoar layers from December can still be found buried 70-120 cm and 110-190 cm below the surface. They are highly variable in distribution and trending toward dormancy, but the possibility exists for avalanches to step down to these layers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":106,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysavvy.avalanche
A problematic layer consisting of sugary faceted grains over a crust may be found around 200 cm deep. This problem is most predominant in the north of the region (e.g. Duffey, Hurley). The likelihood of triggering an avalanche on these layers has reduced, but the consequence of doing so remains high.
The recent storm added a big load to a deeply buried weak layer. Avalanches on this layer are becoming less likely, however they will be large and destructive if they do happen.
A couple of problematic layers may be found around 100 to 200 cm deep. The layers are primarily in the north of the region (e.g. Duffey, Hurley) and include weak layers of surface hoar and faceted grains above a hard melt-freeze crust. The likelihood of triggering a persistent slab has reduced, but the consequence of doing so remains high.
Reactive slab avalanches may exist only in the high alpine from recent snow and wind. Slabs will be thickest in lee terrain features, as the snow fell with a strong southwest wind. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5dac2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cr018","text":"
A couple of weak layers exist in the mid snowpack, buried 80-150 cm and 120-200 cm below the surface.  They are highly variable in distribution and trending toward dormancy, but they are being tested by a new load of new snow. Some potential currently exists for avalanches in surface layers to step down to a deeper layer to create larger, much more destructive avalanches.
A couple of weak layers exist in the mid snowpack, buried 70-120 cm and 110-190 cm below the surface. They are highly variable in distribution and trending toward dormancy, but they are being tested by a new load of new snow. Some potential currently exists for avalanches in surface layers to step down to a deeper layer to create larger, much more destructive avalanches.
Weak layers of surface hoar exist 65-140 cm deep in sheltered treeline terrain (and below). These layers are highly variable in form and distribution. A widespread buried crust also exists near the base of the snowpack. Although these layers have not been associated with recent avalanche activity, they are being tested by a new load of new snow and potential currently exists for avalanches in surface layers to step down to a deeper layer to create larger more destructive avalanches.
A couple of weak layers exist in the mid to lower snowpack, buried 70-120 cm and 110-190 cm below the surface. They are highly variable in distribution and trending toward dormancy, but recent isolated avalanche activity on deep layers should keep them on your mind. Some potential currently exists for avalanches in surface layers to step down to a deeper layer to create larger, much more destructive avalanches.
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.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8i9kq","text":"
Shifting wind over the past few days has likely blown snow into slabs in atypical terrain features. They could be especially reactive where they sit over a rain crust or large surface hoar crystals.
Weak layers of surface hoar exist 50-150 cm deep in sheltered treeline terrain (and below). These layers are highly variable in form and distribution. A widespread buried crust also exists near the base of the snowpack. Although these layers have only been associated with isolated recent avalanche activity, they are adjusting to a new load of new snow and potential currently exists for avalanches in surface layers to step down to a deeper layer to create larger, more destructive avalanches.
A weak layer of surface hoar buried Jan 11 can be found 50-70 cm deep. There is uncertainty with how this persistent slab problem will react to the load from the recent snow and wind. The possibility exists for avalanches in the storm snow to step down to these layers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":106,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysavvy.avalanche
Triggering large avalanches on weaknesses in the lower snowpack remains a possibility. In some areas the concern is weak snow around crusts 70-100 cm deep, while in others it is 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.
A weak layer of surface hoar buried Jan 11 may be found 50-70 cm deep on open, sheltered slopes near and below treeline. There is uncertainty as to the distribution and reactivity of this persistent slab problem across the region. The possibility exists for avalanches in the surface snow to step down to these layers.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":188,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysavvy.avalanche
Cornices have grown large, saggy and fragile. A few recent cornice falls have triggered wind slab avalanches on the slopes below.
The likelihood of triggering a weak layer of surface hoar buried Jan 11 buried 40-60 cm deep is decreasing, but it may still persist on sheltered, open slopes near treeline. There is uncertainty as to the distribution and sensitivity to triggering of this persistent slab problem across 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. The possibility exists for avalanches in the surface snow to step down to these layers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":256,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysavvy.avalanche
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":"jn2n","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
A weak layer of surface hoar buried Jan 11 can be found 40-60 cm deep. On solar aspects, this surface hoar layer may be found near a thin crust. There is uncertainty with how this persistent slab problem will react to the load from the new snow and wind.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":180,"length":15,"key":0}],"data":{}},{"key":"dm0qb","text":"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.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
50-100 cm of snow sits on a widespread weak layer that consists of facets, surface hoar, or a crust depending on location. Avalanches may propagate widely on this layer.
New snow is stressing a widespread weak layer consisting of a crust, with facets and/or surface hoar on top of it. This layer is roughly 75-115 cm deep and is expected to produce large avalanches for longer than what is typical after a storm on the South Coast.
A weak layer of surface hoar buried Jan 11 may be found 50-70 cm deep on open, sheltered slopes near and below treeline. There is uncertainty as to the distribution and reactivity of this persistent slab problem across the region. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":188,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysavvy.avalanche
We've been tracking a few different persistent weak layers in the snowpack. They are all generally buried between 100-200 cm and tend to consist of either surface hoar or crusts with faceted snow sitting on them. Recent storms and snow added a huge load and tested these layers deeper in the snowpack. Moving forward the mid-pack is generally well settled and these layers are becoming quite stubborn to human trigger and likely trending to dormancy, however still pose the \"low probability, high consequence\" scenario.
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. Steep, rocky and shallow snowpack areas would be likely trigger areas.
Persistent weak layers that were buried in January and February could become reactive again with intense solar radiation and high freezing levels.
Light new snow amounts are accumulating above a range of weak surfaces that new snow won't bond well to. Only wind loaded pockets will likely see enough accumulation to pose a hazard on Monday, but expect them to be touchy to light triggers.
A weak layer of surface hoar buried Jan 11 buried 20-50 cm deep may be found on sheltered, open slopes near treeline. There is uncertainty as to the distribution and sensitivity to triggering of this persistent slab problem across 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. The possibility exists for avalanches in the surface snow to step down to these layers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":200,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://avysavvy.avalanche
50-70 cm of snow sits on a persistent weak layer that was buried near the end of January. This layer consits of a melt freeze crust in some areas, surface hoar in shetered areas, and facets in some areas as well.
In shallow snowpack areas weak faceted snow can be found around crusts roughly 100 cm below the surface. Human triggering a slab above this weak layer is possible on isolated shallow rocky slopes. The most recent avalanches on these layers have been reported east of the Bulkey Valley and at Ningunsaw.
Old wind slabs in isolated terrain features have likely become stubborn to trigger. Large loads like cornice falls could still trigger avalanches on wind loaded slopes below.
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.
As flurries continue, small new wind slabs may form in leeward pockets at ridgecrests and around exposed terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8vod5","text":"
Light new snow amounts are accumulating above a range of weak surfaces that new snow won't bond well to. Only very wind loaded pockets will likely see enough accumulation to pose a hazard on Monday, but expect them to be touchy to light triggers.
A weak layer of surface hoar buried Jan 11 is down 40-120 cm and may be found on sheltered slopes near treeline in northern parts of the region. Deeper layers from early December and November can still be found in the snowpack.  These layers may become reactive with a large load or in shallow, rocky or thin to thick snowpacks.
A weak layer of surface hoar buried Jan 11 buried 30-60 cm deep may be found on sheltered 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. Concern for all of these layers is increasing as they adjust to a new load of snow. Steep, rocky and shallow snowpack areas would be likely trigger areas.
30-70 cm sits above a buried weak interface that consists of surface hoar, facets, and/ or a crust. Forecast snow and wind will likely add cohesion and load to these weak layers resulting in a reactive persistent slab problem.
New snow is stressing a widespread weak layer consisting of a crust, with facets and/or surface hoar on top of it. This layer is roughly 60-100 cm deep and is expected to produce large avalanches for longer than what is typical after a storm on the South Coast.
A weak layer of surface hoar buried Jan 11 is down 30-60 cm and may be found on sheltered 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. Concern for all of these layers is increasing as they adjust to a new load of snow. Steep, rocky and shallow snowpack areas would be likely trigger areas.
30-60 cm sits on a buried weak layer that consists of facets, surface hoar, or a crust, depending on location.  Avalanches on this layer may propagate widely.
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. Loose-dry avalanches may be seen from steeper slopes where there is little cohesion in the recent storm snow.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c3v8h","text":"Cornices are large and fragile and don't respond well to rapid change- like new load from snow, rapid warming or rapid cooling. They deserve respect and a wide berth from above and below.
Ongoing ridgetop winds have redistributed the low density snow into wind slabs on lee features at upper elevations that may be possible to human trigger.
30-60 cm sits above a buried weak interface that consists of surface hoar, facets, and/ or a crust. Forecast snow and strong wind may create enough cohesion and load to these weak layers resulting in a reactive persistent slab problem just waiting for a skier or rider to trigger.
30-60 cm sits above a persistent weak layer that consists of surface hoar, facets, and/ or a crust. As the new snow becomes more consolidated, the likelihood of avalanches may increase.
A cohesive slab 30-45 cm thick now sits above a buried weak layer of surface hoar and facets. 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 below.
A widespread weak layer consisting of a crust, with facets and/or surface hoar on top of it is now down about 125-175 cm. This layer is expected to produce large avalanches for longer than what is typical after a storm on the South Coast.
40-80 cm sits above a buried weak interface that consists of surface hoar, facets, and/ or a crust. As the snow above this layer becomes more consolidated, the likelihood of avalanches may increase.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":142,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","muta
We're expecting more wind from the east and southeast this weekend which could form fresh wind slabs in unusual locations.
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, where it exists as surface hoar.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":207,"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.
Intermittent 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":"1n9jn","text":"
outhwest switching to northwesterly winds may form reactive wind slabs on a variety of aspects at treeline and above.
Ongoing 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":"1n9jn","text":"
Intermittent ridgetop winds have redistributed recent low density snow into wind slabs on lee features at upper elevations that may be possible to human trigger.
Southwest switching to northwesterly winds may form reactive wind slabs on a variety of aspects at treeline and above.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9q9kb","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1n9jn","text":"
Southwest switching to northwesterly winds may form reactive wind slabs on a variety of aspects at treeline and above.
A widespread weak layer consisting of a crust, with facets and/or surface hoar on top of it is now down about 80-150 cm. This layer is expected to produce large avalanches for longer than what is typical after a storm on the South Coast.
50-80 cm of snow sits on a persistent weak layer that was buried near the end of January. This layer consist of a melt-freeze crust in some areas, surface hoar in sheltered areas, and facets in some areas as well.
A cohesive slab 30-45 cm thick now sits above a buried weak layer of surface hoar and surface facets. 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":"
A weak layer of surface hoar buried mid January is down 40-120 cm and may be found on sheltered slopes near treeline in northern parts of the region. Deeper layers from early December and November can still be found in the snowpack.  These layers may become reactive with additional snow load or in shallow, rocky, or thin to thick snowpack areas.
There may be a localized uptick (30-40 km per hr at ridge top) in north east wind tomorrow. This could mean new reactive wind slabs in places with snow available for transport.
Southwest switching to northwesterly winds may form reactive wind slabs on a variety of aspects at treeline and above.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1q1rq","text":"
20-40 cm sits above a weak layer that consists of surface hoar, facets, and/ or a crust. As the new snow becomes more cohesive and gains slab properties, the likelihood of avalanches may increase.
20-40 cm of new storm snow has slowly accumulated over the past few days. Variable wind has formed reactive slabs on multiple aspects, and wind will continue to impact loose snow. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or slabby.
20-40 cm of new storm snow has slowly accumulated over the past few days. Changing wind directions will likely form reactive slabs on multiple aspects. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or slabby.
Storm slabs may be reactive especially in areas that received higher snowfall amounts.
30-80 cm sits on a buried weak layer that consists of facets, surface hoar, or a crust, depending on location.  Avalanches on this layer may propagate widely.
Storm slabs may continue to be reactive, especially in wind loaded areas at higher elevations.
A widespread weak layer consisting of a crust, with facets and/or surface hoar on top of it is now down about 80-150 cm. This layer may still produce large avalanches in areas that have not already avalanched.
Moderate wind from the west-northwest has redistributed recent storm snow to leeward slopes and terrain features building fresh wind slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"71oa4","text":"Cornices are large and fragile and don't respond well to rapid change- like new load from snow, rapid warming or rapid cooling. They deserve respect and a wide berth from above and below.
30-70 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.
Moderate to strong northwest 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.
New snow combined with moderate to strong northwest wind is creating 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.
Previous wind from southwest to northwest has formed wind slabs in lee features at upper elevations. These may remain reactive to human triggers Sunday.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eobum","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.
Up to 30 cm of new snow fell by Wednesday morning. Storm slabs may continue to be reactive on Friday, especially in localized 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.
Wind slabs may continue to be reactive and easily triggerable by humans at upper elevations.
A widespread weak layer consisting of a crust, with facets and/or surface hoar overtop is now down about 80-150 cm. This layer may still produce large avalanches in areas that have not already avalanched.
A surface hoar layer buried near the end of January down 30-50 cm has recently become reactive in the south and central parts of the region. Additionally there is a another surface hoar layer down 40-70cm in the northern part of the region around Pine Pass.
Wind slabs formed last week have likely grown old and tired, but we're expecting more wind from the northeast, east and southeast this week which could form fresh wind slabs in unusual locations.
New snow this week has combined with moderate to strong northwest wind to create wind slabs which may remain reactive 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 easier to trigger Sunday.  Cold temperatures and time should reduce the likelihood of triggering these as we head into the work week.
Storm snow is most likely to show slab properties where it has been deposited into wind slabs in lee terrain features. Wind slabs are most reactive during their formation.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eobum","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.
Variable wind has formed reactive slabs on multiple aspects, and wind will continue to impact loose snow. Avalanches will be most likely in wind loaded areas and where the snow feels stiff or punchy.
Though most winds have been light, there have been some localized moderate to strong winds from variable directions (will likely switch to southerly Sunday) . Newer reactive wind slabs will be 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 layer.
A persistent weak layer buried 70 to 100 cm deep has produced recent large avalanches and is expected to become increasingly reactive this weekend. This layer has been most sensitive around treeline, but may also extend into alpine terrain and/or down into the trees.  Avalanches failing on this interface will be large and destructive.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":190,"length":8,"key":0}],"data":{}}],"entityMap":{"0":{"type":
Though most winds have been light, there have been some localized moderate to strong winds from variable directions (will likely switch to southerly Sunday) . Newer reactive wind slabs will be 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 layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dvqpn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4v4m0","text":"
Look out for wind slabs in unusual places. There have been some localized moderate to strong winds from variable directions. Newer reactive wind slabs will be 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 layer in isolated areas .","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dvqpn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4v4m0","text":"
There is a lingering possibility of triggering 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.
It remains possible 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.
Look out for wind slabs in unusual places. There have been some localized moderate to strong winds from variable directions. Newer reactive wind slabs will be 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 layer.
New snow last week with moderate to strong northwest wind formed wind slabs that may remain reactive 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 easier to trigger.
Variable winds may carry loose snow and build wind slabs in exposed and open features. Use caution around ridges, cornices, and loaded features. In steeper terrain, be cautious of dry-loose avalanches and mindful of sluffing.
It remains possible 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.
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":"1q1rq","text":"
A weak layer of surface hoar is buried 50-80cm on sheltered slopes near and below treeline. Activity appears to be slowing on this layer, though it may be possible to trigger in isolated areas.
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.
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 in surface layers have greater potential to step down to deeper weak layers from the early season.","type":"unstyled","depth":0,"inlineSty
Intermittent wind over the past few days could form triggerable wind slabs on lee features at upper elevations.
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.
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 with skier traffic.
Cold temperatures are gradually robbing them of cohesion, but some wind slabs may remain reactive to human triggering. More recent slab formations and places where wind slab may have formed over sun crust (south aspects) are the biggest concern.
60-100 cm of snow sits on a persistent weak layer that was buried near the end of January. This surface hoar/crust interface is slowly gaining strength but may remain human triggerable in steep convex features at treeline and potentially steep alpine features where it presents as a crust.
Strong westerly wind in the southeast of the region might have formed reactive wind slabs in lee terrain features in the alpine and open areas at treeline on Friday. Moderate west wind will continue to form wind slabs throughout the day. Look out for wind slabs in unusual places. Recently localized moderate to strong winds blew from variable directions. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"er379","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6u0da","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.
Despite decreasing avalanche danger, it remains possible 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.
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":
We've recently had wind from a variety of directions including but not limited to north and east.  This has resulted in wind slabs that are spread across many terrain features and aspects. Cold temperatures and time are likely allowing these slabs to become old and tired.  Watch for fresh wind slabs Sunday as strong southeast wind Saturday night may form new wind slabs where there is snow available for transport.
Look out for wind slabs in unusual places. There have been some localized moderate to strong winds from variable directions during the weekend. Newer reactive wind slabs will be 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.
Elevated and shifting winds have transformed exposed areas into a complex minefield of wind slabs. 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. West/Northwest wind is expected to pick up Tuesday afternoon which will likely form yet another round of potentially touchy wind slabs.
60-100 cm of snow sits on a persistent weak layer of facets that was buried in mid-February.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4viia","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2vnei","text":"The late January persistent weak layer is down 70-120 cm. Though avalanches on this layer have been sporadic, they have been large.
40-80 cm of recent snow 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.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b364b","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"g6at","text":"Another persistent weak layer buried 80-120 cm deep is composed of surface hoar. In most areas, it has healed under the weight of the overlying snow but we are still seeing isolated activity in the far south of the region. These events have been skier triggered, around size 2 in steep, cliffy, unsupported terrain around treeline.
Look out for wind slabs in unusual places. There have been some localized moderate to strong winds from variable directions. These winds have redistributed loose snow developing wind slabs in lee features, especially in the alpine and open areas at treeline. Newer reactive wind slabs will be 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 layer in isolated areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dvqpn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4v4m0","text":"In sheltered zones the surface snow is becoming faceted and sugary and sluffing should be expected in steep terrain.
Sun and rising temperatures may produce a moist snowpack by the afternoon
A persistent weak layer buried 60 to 120 cm deep has produced recent large avalanches and is expected to become increasingly reactive this weekend. This layer has been most sensitive around treeline, but may also extend into alpine terrain and/or down into the trees.  Avalanches failing on this interface will be large and destructive.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":190,"length":8,"key":0}],"data":{}}],"entityMap":{"0":{"type":
Cornices have seen substantial growth since the last storm, and they may release naturally with the impact of solar radiation. Cornice falls can act as triggers on slopes below.
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. New flurries may hide older, but still reactive slabs.
Watch for fresh wind slabs with new snow and moderate northwest wind forecast for Tuesday. Keep in mind recent wind has shifted directions and spread wind slabs across many terrain features and aspects.
Look out for wind slabs in unusual places. There have been some localized moderate to strong winds from variable directions. These winds have redistributed loose snow developing wind slabs in lee features, especially in the alpine and open areas at treeline. Newer reactive wind slabs will be 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. In some locations wind slabs sit directly on the persistent weak layer. Recent avalanches were triggered by humans on mellow slopes and 60 cm deep.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fjl6u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4v4m0","text":"In sheltered zones the surface snow is becoming faceted and sugary and sluffing should be expected in steep terrain.
50-80 cm of snow sits on a persistent weak layer that was buried near the end of January. This surface hoar/crust interface is slowly gaining strength but may remain human triggerable in steep convex features at treeline and potentially steep alpine features where it presents as a crust.
A persistent weak layer buried 40 to 80 cm deep has produced recent large avalanches and is expected to become increasingly reactive this weekend. 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":61,"length":23,"key":0},{"offset":189,"length":8,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/mountain-information-network/submissions/b05a04fa-1de4-4a3f-9ec1-014329d86d48"}},"1":{"type":
Where cornices exist they pose a threat both from the potential for them 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.
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. In some areas, two layers of surface hoar are buried in close proximity, 30-70 cm deep. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":134,"length":8,"key":0}],"data":{}}],"entityMap":{"0":{"type":
Look out for wind slabs in unusual places. There have been some localized moderate to strong winds from variable directions during the weekend. Newer reactive wind slabs will be 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. In some locations wind slabs sit directly on the persistent weak layer. Recent reports suggested avalanches failing up to 70 cm deep. These avalanches can be triggered from a distance away.
60-80 cm of snow sits on a persistent weak layer that was buried near the end of January. This surface hoar/crust interface is slowly gaining strength but may remain human triggerable in steep convex features at treeline and potentially steep alpine features where it presents as a crust.
Look out for wind slabs in unusual places. There have been some localized moderate to strong winds from variable directions. These winds have redistributed soft snow forming wind slabs in lee features, especially in the alpine and open areas at treeline. Newer reactive wind slabs will be 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. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fjl6u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4v4m0","text":"Once the sun comes out wet loose avalanches might release on steep solar aspects.
Moderate southwest wind will form fresh wind slabs in lee terrain features in the alpine and exposed treeline where soft snow is available for transport. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5a22c","text":"Look out for wind slabs in unusual places. There have been some localized moderate to strong winds from variable directions over the weekend. Newer reactive wind slabs will be 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. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6tqbe","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6rc8r","text":"Once the sun comes out wet loose avalanches might release on steep solar aspects.
Moderate southwest wind will continue to form touchy wind slabs in lee terrain features in the alpine and exposed treeline. Look out for wind slabs in unusual places. There have been some localized moderate to strong winds from variable directions over last weekend. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5s0cs","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.
A persistent weak layer 50-100 cm deep continues to show reactivity in snowpack tests, despite not producing avalanches in the past week. This surface hoar/crust interface may remain human triggerable in steep convex features at treeline and potentially steep alpine features where it presents as a crust.
In areas that have received fresh snow over the past few days, storm snow is settling over a variety of surfaces. More reactive slabs will be found in areas with deeper accumulations or impacted by wind. This problem is more likely in the southern half of the region where 15-30 cm recent snow is not bonding well to old surfaces.
There may be a lingering possibility of triggering persistent slab avalanches in isolated steep terrain features. The primary layer of concern is layer of surface hoar, facets, and/or crusts buried 40-80 cm deep throughout the region. Although we haven't received any reports of persistent slab activity in the most recent storm cycle, we don't believe that these limited results are conclusive enough to declare the problem gone.
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.
In areas that have received fresh snow over the past few days, storm snow is settling over a variety of surfaces. More reactive slabs will be found in areas with deeper accumulations or impacted by wind. This problem is more likely in the southern half of the region (ex. Allison Pass and closer to the US border).
A persistent weak layer buried 40-70 cm deep remains sensitive to human triggering as evidenced Wednesday. This layer has been most sensitive around treeline, but may also extend into alpine terrain and/or down into the trees. In some areas, two layers of surface hoar are buried in close proximity, 30-70 cm deep. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":86,"length":19,"key":0},{"offset":149,"length":8,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/mountain-information-network/submissions/b05a04fa-1de4-4a3f-9ec1-014329d86d48"}},"1":{"type":
This problem is isolated to the Coquihalla area where 20-30 cm of new snow will form a widespread storm slab problem at all elevations. Natural avalanches will be likely on wind-loaded slopes.
Moderate southwest wind and new snow will form fresh wind slabs in lee terrain features in the alpine and exposed treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5a22c","text":"Look out for wind slabs in unusual places. There have been some localized moderate to strong winds from variable directions over the weekend. 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.
Moderate westerly wind is forming fresh wind slabs on northeast to southeast facing lee terrain features in the alpine and open areas at treeline. Look out for wind slabs in unusual places. Recently localized moderate to strong winds blew from variable directions. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"er379","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6u0da","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. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ccak5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1qlo8","text":"When the sun comes out wet loose avalanches might release on steep slopes which are directly hit by the sun.
Persistent slab avalanches are most likely in the northern Purcells where there has been recent avalanche activity on a 40-80 cm deep layer of surface hoar, facets, and/or crusts.
Many large avalanches have been triggered on this layer of surface hoar, faceted grains, and/or a melt-freeze crust, found around 50 to 80 cm deep. 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.
60-100 cm of snow sits on a persistent weak layer of facets that was buried in mid-February. Another persistent weak layer buried 80-120 cm deep is composed mainly of surface hoar. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f2hcb","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"908ob","text":"We are still seeing isolated avalanche activity on these layers, and would be a little extra cautious as slopes warm up in the coming days.
Cornices are large, looming, and require extra caution under the current conditions.
Cornices will weaken with sunny skies and relatively mild air temperature. The snow on sun-exposed slopes may also weaken, so use caution during the heat of the day.
40-80 cm of recent storm snow sits overtop a thick layer of weak, sugary facets. At upper elevations, the recent snow has been blown into thick, reactive slabs in lee features. Due to the weak interface, storm slabs have shown very wide propagation across slopes in recent avalanches that have 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":"Another persistent weak layer is buried 80 to 120 cm deep. We don't yet have enough data to say for sure whether or not it continues to be a problem at this point. On the one hand, we have not yet heard any reports of recent large avalanches stepping down to this layer, which is encouraging, and the weight of the overlying snow is likely causing it to bond. On the other hand, this layer has been associated with a recent fatal avalanche in the neighboring North Rockies region, so we want to do our due diligence before we take it off our radar.
West to southwest wind will build fresh and reactive wind slabs. These may be easily triggered by the weight of a skier or rider. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a1oms","text":"Loose-dry avalanches may be easily triggered from steep terrain features.
There are two main persistent weak layers of concern in the snowpack. The most recent is buried anywhere from 10-50 cm and was buried in mid-February. The next layer of concern consists of surface hoar, facets, and/or crusts, and is down 40-80 cm.
4 to 8 cm of new snow is expected Wednesday night with strong south/southeast wind.  Another 2 to 4 cm is forecast for Thursday as wind switches to the northwest. Fresh, shallow & sensitive storm slabs are likely to form.
There are several persistent weak layers in the snowpack. The most recent is down 40-80 cm and was formed during the recent cold snap.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4viia","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2vnei","text":"The late January persistent weak layer is down 70-120 cm. Though avalanches on this layer have been sporadic, they have been large.
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.
There may be a lingering possibility of triggering persistent slab avalanches in isolated steep terrain features. The primary layer of concern is layer of surface hoar, facets, and/or crusts buried 40-80 cm deep throughout the region.
40-80 cm of recent snow sits overtop a thick layer of weak, sugary facets. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b364b","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"g6at","text":"Another persistent weak layer buried 80-120 cm deep is composed of surface hoar. We are still seeing isolated activity on this layer.
A persistent slab has recently been reactive to rider and explosive triggering over the past few days. There is anywhere from  80 to 200 cm of snow above a mixed bag of old snow surfaces buried in mid-February. This weak layer will be deeper after Sunday's storm. The primary concern now is storm slab avalanches stepping down to this deep layer and skier or rider triggering which would result in a very-large, consequential avalanche.
A buried persistent weak layer still lingers 50-100 cm deep. Despite limited recent avalanche activity, the gradual load of new snow and mild temperatures could be adding stress to this layer. This surface hoar/crust interface may remain human triggerable in steep convex features at treeline and potentially steep alpine features where it presents as a crust.
Switching northwest and southwest wind will build fresh and reactive wind slabs. These may be easily triggered by the weight of a skier or rider. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a1oms","text":"Loose-dry avalanches may be easily triggered from steep terrain features.
There is anywhere from 40 to 80 cm of snow above a mixed bag of old snow surfaces including hard wind pressed snow, sugary facetted snow, feathery surface hoar in sheltered locations that were buried in mid-February. A lot of uncertainty surrounds this interface and it may be reach the threshold with additional snow and wind forecast. The primary concern now is wind or storm slab avalanches stepping down to this layer and skier or rider triggering which would result in a large, consequential avalanche.
West to southwest wind will build fresh and reactive wind slabs. These may be easily triggered by the weight of a skier or rider. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"giu9","text":"Loose-dry avalanches may be easily triggered from steep terrain features.
Switching northwest and southwest wind will build fresh and reactive wind slabs. These may be easily triggered by the weight of a skier or rider. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"giu9","text":"Loose-dry avalanches may be easily triggered from steep terrain features.
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. Switching northwest and southwest wind will build fresh and reactive wind slabs. As the natural avalanche activity tapers off, these slabs may continue to be primed for skier and rider triggering. The slabs could be 20 to 50 cm thick, depending on how much snow fell in your riding area. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"giu9","text":"Loose-dry avalanches may be easily triggered, especially if the sun pokes out.
Storm slabs may continue to be reactive, especially in wind-loaded areas.
Many large avalanches have been triggered on this layer of surface hoar, faceted grains, and/or a melt-freeze crust, found around 70 to 100 cm deep. 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.
20-30 cm of new snow fell 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.
40-80 cm of recent snow sits on a persistent weak layer of facets. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b364b","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"g6at","text":"Another persistent weak layer buried 80-120 cm deep is composed mainly of surface hoar. We are still seeing isolated activity on this layer.
Loads of large avalanches have been triggered on this layer of surface hoar, faceted grains, and/or a melt-freeze crust, now found around 50 to 100 cm deep. 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 they can easily be remotely triggered.
60-100 cm of snow sits on a persistent weak layer of facets that was buried in mid-February.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5i64p","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"g6at","text":"Another persistent weak layer buried 80-120 cm deep is composed mainly of surface hoar. We are still seeing isolated activity on this layer.
The persistent slab has recently been reactive to rider and explosive triggering over the past few days. There is anywhere from  90 to 250 cm of snow above a mixed bag of old snow surfaces buried in mid-February.  The primary concern now is storm slab avalanches stepping down to this deep layer and skier or rider triggering which would result in a very-large, consequential avalanche.
A persistent weak layer buried 60 to 120 cm deep has produced large avalanches this month. There is potential that it may experience a resurgence this weekend, with loading from new snow and storm slab avalanches. This layer has been most sensitive around treeline, but may also extend into alpine terrain and/or down into the trees. Avalanches failing on this interface will be large and destructive.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":256,"length":8,"key":0}],"data":{}}],"entityMap":{"0":{"type":
A persistent weak layer buried 60 to 120 cm deep has produced large avalanches this month. There is potential that it may experience a resurgence this weekend, with loading from new snow and storm slab avalanche activity. This layer has been most sensitive around treeline, but may also extend into alpine terrain and/or down into the trees. Avalanches failing on this interface will be large and destructive.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":264,"length":8,"key":0}],"data":{}}],"entityMap":{"0":{"type":
A persistent weak layer buried 80 to 180 cm deep is being tested by significant new snow loads. We are awaiting reports of avalanche activity during the storm, specifically whether they indicate step- downs to this layer, to determine whether or not it continues to be a problem.
A persistent weak layer buried 70 to 120 cm deep is being tested by significant new snow loads. We are awaiting reports of avalanche activity during the storm, specifically whether they indicate step- downs to this layer, to determine whether or not it continues to be a problem.
A persistent weak layer buried 80 to 160 cm deep is being tested by significant new snow loads. We are awaiting reports of avalanche activity during the storm, specifically whether they indicate step- downs to this layer, to determine whether or not it continues to be a problem.
Wind slabs are expected to be reactive in lee terrain with ongoing moderate to strong southerly wind. Previous variable wind direction means that wind slabs may be found on all aspects, but the most reactive ones will likely be found on northerly aspects.
There is a lingering possibility of triggering 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. We are awaiting reports of avalanche activity during the storm, specifically whether they indicate step- downs to this layer, which may offer insight as to whether or it continues to be a problem.
Cornices are large and looming, and they require extra caution under the current conditions.
West to southwest wind has formed reactive wind slabs on leeward slopes. These could be triggered by the weight of a skier or rider, especially on east-northeast aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a1oms","text":"Large looming cornices exist along ridgelines and require a wide berth from above and below, especially when they're baking in the sun.
Switching northwest and southwest wind will build fresh and reactive wind slabs. As the natural avalanche activity tapers off, these slabs may continue to be primed for skier and rider triggering. The slabs could be 20 to 50 cm thick, depending on how much snow fell in your riding area. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4bhb","text":"Loose-dry avalanches may be easily triggered, especially if the sun pokes out.
Cornices are large and looming. A warming trend and sunny skies will weaken cornices, increasing the likelihood of them releasing naturally or from the weight of a person.
The persistent slab has been reactive to rider and explosive triggering over the past week. There is anywhere from  90 to 250 cm of snow above a mixed bag of old snow surfaces buried in mid-February.  The concern now is for storm slab avalanches stepping down to this deep layer and skier or rider triggering which would result in a very-large, consequential avalanche.
West to southwest wind has formed reactive wind slabs on leeward slopes. These could be triggered by the weight of a skier or rider, especially on east-northeast aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bh08c","text":"Large looming cornices exist along ridgelines and require a wide berth from above and below, especially when they're baking in the sun.
There are a few layers of concern with the first major warm up happening this week.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b9fa7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"did3f","text":"1) A spotty layer of small surface hoar crystals is buried 20-40 cm deep around treeline. It won't take long for the warm temperatures to affect the snow this depth. We may see isolated avalanche activity on this layer in the early days of the warm up, but beyond that, the warming will likely help this layer heal.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d7tud","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6nbon","text":"2) A persistent weak layer buried 80-150 cm deep is composed of a combination of surface hoar, crusts and facets formed on the surface in late January. The problem seems to be most pronounced in thin snowpack areas on solar aspects. Recently we have seen large explosive loads and storm slab avalanches in motion produce avalanches on this layer. Rapid warming, strong sun or loose wet avalanches could serve as triggers for large, destructive avalanches this week.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9rvs9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2676k","text":"3) Basal facets in shallow snowpack areas in the east of the region could be susceptible to shock from the warm temperatures this week. Extra caution should be exercised in these types of snowpacks. Avalanches on this layer are most likely human triggered from shallow rocky areas, which then propagate out to thicker spots, resulting in large avalanches. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":42,"length":25,"style":"B
Large looming cornices exist along ridgelines and require a wide berth from above and below. The likelihood of them becoming weak and failing is greater with warming and solar radiation. They have the potential to trigger slab avalanches from slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5g55r","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9ji11","text":"West to southwest wind has formed pockets of wind slab on leeward slopes. These could be triggered by the weight of a skier or rider, especially on east-northeast aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a1oms","text":"
Reactive wind slabs likely exist in steep open terrain at alpine and treeline elevations, especially on north and east aspects.
Reactive wind slabs may linger in steep open terrain at alpine and treeline elevations, especially on north and east aspects.
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 old stubborn persistent weak layers, it's a large falling cornice.
A natural persistent slab size 3 was reported on Tuesday and has been reactive to rider and explosive triggering over the past week. There is anywhere from  90 to 250 cm of snow above a mixed bag of old snow surfaces buried in mid-February.  The concern now is for storm slab avalanches stepping down to this deep layer and skier or rider triggering which would result in a very-large, consequential avalanche.
The sun packs a punch this time of year. Periods of sunshine could trigger loose wet avalanches. Keep your head up and watch for obvious signs of warming like natural avalanches, snowballing, moist and sticky snow surfaces. Large, looming cornices exist along ridgelines. They may become weak and fail during periods of solar radiation and rising freezing levels. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d2r2i","text":"
There is anywhere from 40 to 80 cm of snow above a mixed bag of old snow surfaces including hard wind pressed snow, sugary facetted snow, feathery surface hoar in sheltered locations that were buried in mid-February. A lot of uncertainty surrounds this interface but it may reach threshold with additional snow and wind forecast. The primary concern now is wind or storm slab avalanches stepping down to this layer and skier or rider triggering which would result in a large, consequential avalanche.
Reactive wind slabs likely exist 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":"
Cornices are large and looming, and they may release naturally under the current conditions. Cornice falls can act as triggers on slopes below.
There is anywhere from 40 to 80 cm of snow above a mixed bag of old snow surfaces including hard wind pressed snow, sugary facetted snow, feathery surface hoar in sheltered locations that were buried in mid-February. A lot of uncertainty surrounds this possible interface and in places where it exists, it may reach threshold with more snow in the forecast. The main concern being wind or storm slab avalanches possibly stepping down to this layer and skier or rider triggering which would result in a consequential avalanche. ","type":"unstyled","depth":0,"inlineStyl
The persistent slab has been reactive to rider and explosive triggering over the past few days. There is anywhere from  90 to 250 cm of snow above a mixed bag of old snow surfaces buried in mid-February.  The concern now is for storm slab avalanches stepping down to this deep layer and skier or rider triggering which would result in a very-large, consequential avalanche.
West to southwest wind has formed reactive wind slabs on leeward slopes. These could be triggered by the weight of a skier or rider, especially on east-northeast aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bh08c","text":"Large looming cornices exist along ridgelines and require a wide berth from above and below, especially if they're baking in the sun.
West to southwest wind has formed reactive wind slabs on leeward slopes. These could be triggered by the weight of a skier or rider, especially on east-northeast aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a1oms","text":"Large looming cornices exist along ridgelines and require a wide berth from above and below, especially if they're baking in the sun.
Large looming cornices exist along ridgelines and require a wide berth from above and below. The likelihood of them becoming weak and failing is HIGH with warming and solar radiation. They have the potential to trigger slab avalanches from slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"89bmu","text":"West to southwest wind has formed isolated wind slabs on leeward slopes. These could be triggered by the weight of a skier or rider, especially on east-northeast aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bh08c","text":"
Warm air temperature and periods of 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.
n the north of the region, cornices have seen substantial growth since the last storm, and they may release naturally with the impact of solar radiation. Cornice falls can act as triggers on slopes below. ","type":"unstyled","depth":0,"inlineStyl
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 warm temperatures may increase the reactivity of these layers.
Cornices are large, looming, and can become weak with rapid warming. Avoid exposure to slopes with cornices overhead and stay well back of them when travelling on ridgetop.
Wind slabs are expected to be reactive in lee terrain with moderate to strong southerly winds in the forecast.  Previous variable wind direction means that wind slabs may be found on all aspects. The most reactive ones are likely to be found on northerly aspects.
Warming temperatures could temporarily increase the likelihood of large persistent slab avalanches. There are several potential layers of concern across the region that have produced some sporadic activity over the past weeks.
Persistent slab avalanches remain possible in the northern tip of the Purcells where there has been recent avalanche activity on a 40-80 cm deep layer of surface hoar, facets, and/or crusts (see Avalanche Summary).
There are a few layers of concern with the major warm up happening Thursday:","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"did3f","text":"1) A spotty layer of small surface hoar crystals is buried 20-40 cm deep around treeline. It won't take long for the warm temperatures to affect the snow this depth. We may see isolated avalanche activity on this layer in the early days of the warm up, but beyond that, the warming will likely help this layer heal.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6nbon","text":"2) A persistent weak layer buried 80-150 cm deep is composed of a combination of surface hoar, crusts and facets formed on the surface in late January. The problem seems to be most pronounced in thin snowpack areas on solar aspects. Recently we have seen large explosive loads and storm slab avalanches in motion produce avalanches on this layer. Rapid warming, strong sun or loose wet avalanches could serve as triggers for large, destructive avalanches this week.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2676k","text":"3) Basal facets in shallow snowpack areas in the east of the region could be susceptible to shock from the warm temperatures this week. Extra caution should be exercised in these types of snowpacks. Avalanches on this layer are most likely human triggered from shallow rocky areas, which then propagate out to thicker spots, resulting in large avalanches. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":42,"length":25,"style":"B
There is anywhere from 90 to 250 cm of snow above a persistent weak layer buried in mid-February. The concern now is for storm slab avalanches stepping down to this deep layer, or human triggering which would result in a very large, high consequence avalanche.
Large cornices exist along ridgelines and require a wide berth from above and below. The likelihood of them becoming weak and failing is greater with warming and solar radiation. They have the potential to trigger slab avalanches from slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5g55r","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9ji11","text":"West to southwest wind has formed pockets of wind slab on leeward slopes. These could be triggered by the weight of a skier or rider, especially on east-northeast aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a1oms","text":"
Large cornices exist along ridgelines and require a wide berth from above and below. The likelihood of them becoming weak and failing is HIGH with warming and solar radiation. They have the potential to trigger slab avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bh08c","text":"
Wind slabs are expected to be reactive in lee terrain with ongoing moderate to strong southerly wind.
Uncertainty about buried weak layers warrants conservative terrain choices. There are several persistent weak layers 50-150 cm below the surface that have produced large natural and human triggered avalanches in the last week of February and first week of March. It is too soon to write these layers off and they could still be reactive, especially on south-facing slopes when the sun is out.
Warming temperatures may have temporarily increased the likelihood of large persistent slab avalanches. There are two potential layers of concern buried 60-120 cm deep across the region that have produced some sporadic activity over the past weeks.
The persistent slab problem appears to have been put to rest in deep snowpack areas in the west of the region, but on the eastern slopes (e.g. Kakwa/Tumbler Ridge) there have been very large recent natural avalanches. The rising freezing levels last weekend combined with daytime warming this week may wake this problem up. The most likely triggers are surface avalanches stepping down, cornice fall, or the weight of a machine or a person hitting a thin-spot.
The persistent slab problem appears to have been put to rest in deep snowpack areas in the west of the region, but on the eastern slopes (e.g. Kakwa/Tumbler Ridge) there have been very large recent natural avalanches. The most likely triggers are surface avalanches stepping down, cornice fall, or the weight of a machine or a person hitting a thin-spot.
Around 100 to 200 cm of snow may overly a persistent weak layer buried in mid-February. The likelihood of triggering the layer may increase in the coming days as the forecast storm rapidly loads it.
Around 100 to 200 cm of snow may overly a persistent weak layer buried in mid-February. The likelihood of triggering the layer may be decreasing as the days progress, but the consequence of doing so would be high.
Persistent slab avalanches may remain possible in the northern tip of the Purcells where there has been recent avalanche activity on a 40-80 cm deep layer of surface hoar, facets, and/or crusts (see Avalanche Summary).
Warm temperatures and periods of strong sun will destabilize the upper snowpack in coming days. Start and finish early to reduce your exposure and be mindful of overhead terrain exposed to the sun. Larger wet loose avalanches or cornice falls could also trigger deeply buried weak layers.
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 they are still reactive to human triggering.
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.
Assuming there's still snow available for transport, the wind should be building new wind slabs to the lee of the wind (north through east slopes) and in cross-loaded features.
In the north of the region, a weak layer of facets buried in mid-February is a lingering concern, primarily in areas where it separates wind-stiffened snow above and below. This snowpack structure is most suspect on northerly aspects at upper treeline elevations. Large triggers, such as an avalanche in motion, cornice fall, or intense loading from snow and wind could initiate this deeper layer. ","type":"unstyled","depth":0,"inlineStyl
Around 100 to 200 cm of snow may overly a persistent weak layer buried in mid-February. The likelihood of triggering the layer increases as the storm rapidly loads it.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6i6iu","text":"Failing cornices may trigger avalanches on this layer on the slopes below and create very large avalanches.
Cornices weaken significantly when exposed to sun and warm temperatures. When they fail, they can have enough mass to be very destructive, and they can also trigger slab avalanches on the slopes below them.
Cornices will weaken with sunny skies and relatively mild air temperature. The snow on sun-exposed slopes may also moisten, so use caution during the heat of the day.
Large cornices exist along ridgelines and require a wide berth from above and below. They have the potential to trigger slab avalanches on the slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bh08c","text":"
Large cornices exist along ridgelines and require a wide berth from above and below. They have the potential to trigger slab avalanches from slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5g55r","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9ji11","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a1oms","text":"
There is anywhere from 90 to 250 cm of snow above a persistent weak layer buried in mid-February. The concern now is for storm slab avalanches stepping down to this deep layer, or human triggering, which would result in very large, high consequence avalanches.
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. Warm 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 while travelling like moist or wet snow, snowballing or natural avalanche activity. Steep slopes and around rocks will be most susceptible to natural avalanche activity.
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.
Big warm ups, like the one headed our way this weekend often awaken dormant weak layers resulting in large avalanches. Steep, rocky, convex terrain with a shallow or thin to thick snowpack are examples of places where triggering these layers are more likely.
Naturally triggered wet loose avalanches are likely, especially on steep solar aspects in the alpine.
Uncertainties about buried weak layers warrants conservative terrain choices. There are several persistent weak layers 50-150 cm below the surface that have 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 they are still reactive to human triggering.
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.
Around 100 to 200 cm of snow may overly a persistent weak layer buried in mid-February. The likelihood of triggering the layer has decreased since recent loading over the past few days, but the consequence of doing so would be high.
Assuming there's still snow available for transport, the windshould be building new wind slabs to the lee of the wind (north through east slopes) and in crossloaded features.
Variability in snowfall amounts and freezing levels over the weekend has complicated the distribution of storm slab problems in the region. Dial back terrain choices anywhere you find more than 20 cm of new snow.
There is anywhere from 90 to 250 cm of snow above a persistent weak layer buried in mid-February. The concern now is mainly for storm slab avalanches stepping down to this deep layer, which would result in large, destructive avalanches.
Cornices are large and looming along many ridgelines. A warming trend and sunny skies will weaken cornices, increasing the likelihood of them releasing naturally or from the weight of a person.
There are several persistent weak layers 50-150 cm. below the surface that have produced large natural and human triggered avalanches in the last week of February and first week of March. It may be too soon to write these layers off, as they could still be reactive to human triggers in isolated areas, especially on south-facing slopes when the sun is out.
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":"cogp","text":"Large looming cornices may become weak with warming and solar radiation.
Cornices are large and likely weakening with sun and significant daytime heating. Big cornice falls are a hazard on their own but can also trigger avalanches on the slopes below.
Cornices are large and looming along many ridgelines. Cornices may weaken during daytime heating, increasing the likelihood of triggering naturally or failing from the weight of a human.
Naturally triggered wet loose avalanches are possible, especially on steep solar aspects in the alpine.
Around 100 to 250 cm of snow may overly a persistent weak layer buried in mid-February. The likelihood of triggering the layer might stay elevated while the recent storm snow settles.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6i6iu","text":"Failing cornices may trigger avalanches on this layer on the slopes below and create very large avalanches.
Big warm ups can awaken dormant weak layers resulting in large avalanches. Steep, rocky, convex terrain with a shallow or thin to thick snowpack are examples of places where triggering these layers are more likely.
Warm temperature and periods of sunshine will increase the likelihood of triggering wet loose avalanches, particularly on solar aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f83p2","text":"
Cornices are large and looming. A warming trend will weaken cornices, increasing the likelihood of them releasing naturally or from the weight of a person.
A warming trend will likely weaken the snow surface, particularly on sun-exposed slopes. Avalanches are expected to mostly be small. The most likely areas to get into trouble would be on steep slopes above terrain traps.
Cornices are large and looming along many ridgelines. Progressive days of mild air temperature and periods of sunny skies are likely weakening cornices, increasing the likelihood of them releasing naturally or from the weight of a person.
Sunny breaks, warm temperatures and potential light rain may weaken the upper snowpack and form wet loose avalanches, especially 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.
Around 100 to 300 cm of snow may overly a persistent weak layer buried in mid-February. The likelihood of triggering the layer might stay elevated while the recent storm snow settles.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6i6iu","text":"Failing cornices may trigger avalanches on this layer on the slopes below and create very large avalanches.
Sunny breaks, warm temperatures and potential light rain may weaken the upper snowpack and form wet loose avalanches, especially 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":"bvbs","text":"Even small avalanches can be a hazard in high consequence terrain and above terrain traps.
The persistent slab problem appears to have been put to rest in deep snowpack areas in the west of the region, but on the eastern slopes (e.g. Kakwa/Tumbler Ridge) there have been very large recent natural avalanches. The rising freezing level this weekend may wake this problem up. The most likely triggers are surface avalanches stepping down, cornice fall, or the weight of a machine or a person hitting a thin-spot.
Consecutive days of warm temperatures 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.
Consecutive days of warm temperatures 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":"
Cornices may weaken when the sun is shining. Also use caution on steep, sun-exposed slopes during the heat of the day, as the recent snow may weaken and form loose wet avalanches.
Cornices may weaken when the sun is shining. Also use caution on sun-exposed slopes during the heat of the day.
Cornices are large and looming along many ridgelines. They may be weakening with progressive days of relatively mild air temperature and sunny skies, increasing the likelihood of them releasing naturally or from the weight of a person.
Cornices are fragile due to rapid growth from recent snow and wind. Strong sun will further weaken them. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
Loose wet avalanches may occur during the heat of the day and primarily on solar aspects. Watch for changing snow surfaces while traveling 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":"cl5un","text":"This may only become a problem when the sun is out.
Slopes that face the sun will become unstable as they warm during the day, especially if they are steep.
unshine may trigger wet loose avalanches on steep solar aspects.
Cornices are large and will weaken with sun exposure and daytime heating. Big cornice falls are a hazard on their own but can also trigger avalanches on the slopes below.
Cornices are large and will weaken with sun and daytime heating. Big cornice falls are a hazard on their own but can also trigger avalanches on the slopes below.
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":"cogp","text":"
ornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind.
The persistent slab problem appears to have been put to rest in deep snowpack areas in the west of the region, but on the eastern slopes (e.g. Kakwa/Tumbler Ridge) there were large natural avalanches last week. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ejgkl","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cum2c","text":"Steep, rocky slopes with a shallow or thin to thick snowpack in the alpine are the most likely places to trigger these persistent weak layers.
Where cornices exist they pose a threat both from the potential for them 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 periods of solar radiation.
Periods of sunshine breaking through the clouds could pack enough punch to increase the likelihood of cornice failures. The best way to mitigate the risk is to minimize your exposure, especially when solar radiation is strong.
Periods of sunshine breaking through the clouds could pack enough punch to 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 when solar radiation is strong.
Periods of sunshine breaking through the clouds could pack enough punch to increase the likelihood of cornice failures. Recently a cornice fall triggered a very large slab avalanche on the slope below. These events are fairly unpredictable so the best way to mitigate the risk is to minimize your exposure, especially when solar radiation is strong.
The persistent slab problem is most likely on the eastern slopes of the region (e.g., Kakwa, Tumbler Ridge) and in areas where the snowpack is thin. Steep, rocky slopes with a shallow or thin to thick snowpack in the alpine are the most likely places to trigger buried weak layers. This problem likely won't go away until substantial melt-freeze cycling occurs.
Convective flurries and southwesterly winds on Sunday may have formed small wind slabs on lee features below alpine ridgetops.
The persistent slab problem appears to have been put to rest in deep snowpack areas in the west of the region, but on the eastern slopes (e.g. Kakwa/Tumbler Ridge) there were large natural avalanches last week. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ejgkl","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cum2c","text":"Steep, rocky slopes with a shallow or thin to thick snowpack in the alpine are the most likely places to trigger these persistent weak layers. Large loads such a cornice falls or multiple sleds on the same slope often trigger slopes that single rider couldn't trigger.
Southwest winds and dribs and drabs of new snow may build thin wind slabs in lee terrain features. This problem may 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":"csei3","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 for them to collapse under your feet (or machine) and from the potential to send large chunks of snow far down a slope. They are most likely to fail during periods of solar radiation or loading from snow/wind.
Where cornices exist they pose a threat both from the potential for them 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 periods of solar radiation or loading from snow/wind.
The persistent slab problem is most likely on the eastern slopes of the region (e.g., Kakwa, Tumbler Ridge) and in areas where the snowpack is thin. Steep, rocky slopes with a shallow or thin to thick snowpack in the alpine are the most likely places to trigger buried weak layers. This problem likely won't go away until substantial snowpack warming occurs.
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.
A persistent weak layer of sugary facets continues to lurk deep in the snowpack. Three large avalanches (size 2-3) have failed on this interface in the past week. The first two occurred last weekend during an intense warm-up and the third was initiated by a cornice failure Wednesday near McBride. These avalanches were all reported from northeasterly slopes in the alpine. The persistent slab will likely need a large trigger, however, the weight of a person plus a machine might just be enough. This is a low probabilty but high consequence scenario and very hard to predict.
New cornice development with touchy characteristics were observed on Sunday. Where cornices exist they pose a threat both from the potential for them to collapse under your feet (or machine) and from the potential to send large chunks of snow far down a slope. They are most likely to fail during periods of solar radiation or loading from snow/wind.
Rapidly growing cornices are large, looming and touchy.
The persistent slab problem is most likely on the eastern slopes of the region (e.g., Kakwa, Tumbler Ridge). Large natural avalanche activity was noted around a week ago. Steep, rocky slopes with a shallow or thin to thick snowpack in the alpine are the most likely places to trigger buried weak layers. Large loads, such a cornice falls or multiple sleds on the same slope, often trigger slopes that a single rider couldn't.
Where cornices exist they pose a threat both from the potential for them to collapse under your feet (or machine) and from the potential to send large chunks of snow far down a slope.
There is some uncertainty about lingering storm slabs into Wednesday's warm up. Moderate to strong westerly winds have been loading lee terrain, especially near ridge crests. Also watch for stiffer wind slabs in more exposed, open terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2sl0v","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2v7t3","text":"Sheltered terrain out of the wind will provide better quality riding.
Watch for wind slabs as you transition into wind affected terrain. Westerly winds have been loading lee terrain, especially near ridge crests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"64ssl","text":"
Cornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind. They require respect and a large berth if you're travelling above or below.
Moderate to strong westerly winds have been loading lee terrain, especially near ridge crests. Also watch for stiffer wind slabs in more exposed, open terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"aaun5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2v789","text":"Sheltered terrain out of the wind will provide better quality riding.
Cornices are likely fragile due to rapid growth with recent snow and wind.
ornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind. They require a large berth from above and below.
Cornices are fragile due to rapid growth from recent snow and wind. Cornice falls are dangerous in their own right and they can also trigger slabs on slopes below.
ind slabs may linger at high elevations, particularly in the central and northern part of the region where the most snow accumulated on Saturday. Carefully assess for wind slabs in steep, committing terrain features.
Recent strong southwest through northwest winds have been building fresh cornice growth. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f2mmq","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7qd8u","text":"Cornices falls can be a hazard on their own, and can also act as a trigger for avalanches on the slopes below.
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.
Cornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind. Direct sun can weaken cornices significantly.
Cornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind. They require a large berth from above and below.
Recent strong southwest through northwest winds have been building fresh cornice growth. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2gvpb","text":"Cornices falls can be a hazard on their own, and can also act as a trigger for avalanches on the slopes below.
Wind slabs from snow earlier in the week accompanied by strong wind exposed lee terrain may still linger in high elevation terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"i745","text":"
Recent strong southwest through northwest winds have been building fresh cornice growth. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2gvpb","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8q1lj","text":"Cornices falls can be a hazard on their own, and can also act as a trigger for avalanches on the slopes below.
The spring sun can pack a punch quickly and initiate loose wet avalanches. Watch for signs of instability like natural avalanche activity, wet or moist snow surfaces, and snowballing, especially on solar aspects.
oose dry avalanches in steep terrain should be on your radar as they can run a long way and entrain snow as they go. These can be especially dangerous around terrain traps like cliffs, trees, gullies and roads.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"69us3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dm0ne","text":"You might also find loose moist avalanches on solar slopes and below treeline. Loose avalanches of both types can also trigger storm slabs.
Loose dry avalanches in steep terrain should be on your radar as they can run a long way and entrain snow as they go. These can be especially dangerous around terrain traps like cliffs, trees, gullies and roads.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fe8lg","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dd39h","text":"You might also find loose moist avalanches on solar slopes. Loose avalanches of both types can also trigger slabs.
Cornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind. They require a large berth from above and below. Direct sun and rising freezing levels can weaken cornices significantly.
The spring sun combined with rising freezing levels can pack a punch quickly and initiate loose wet avalanches. Watch for signs of instability like natural avalanche activity, wet or moist snow surfaces, and snowballing, especially on solar aspects.
ry loose avalanches will be very likely on steep south facing slopes at upper elevations when the sun comes out in the afternoon.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"skvh","text":"Wet loose avalanches are possible below treeline.
Small wind slabs may lurk on lee features below alpine ridgetops, formed by recent southwesterly winds.
The persistent slab problem is most likely on the eastern slopes of the region (e.g., Kakwa, Tumbler Ridge) and in areas where the snowpack is thin. Steep, rocky slopes with a shallow or thin to thick snowpack in the alpine are the most likely places to trigger buried weak layers. This problem likely won't go away until a substantial melt-freeze cycling occurs.
ornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind. They are capable of triggering very large avalanches when they fail.
Cornices are large and looming along many ridgelines, and have likely grown with the recent wind. They are capable of triggering large avalanches when they fail.
Cornices are especially fragile this time of year, especially when the sun is out. Cornice falls are dangerous on their own and they can also trigger slabs on slopes below.
Cornices are large and looming along many ridgelines. They become increasingly unstable during periods of warming.
Cornices are large and looming along many ridgelines, and have likely formed fragile new growth with recent snow and wind. They grow increasingly unstable during periods of warming.
Surface snow can quickly 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.
ornices are large and looming along many ridgelines and have likely grown with the recent snow and wind.
Cornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind. They require a large berth when travelling above and below them.
et loose avalanches may occur on steep solar aspects and at elevations where air temperature rises above freezing. Below treeline, loose wet avalanches are possible where snow did not refreeze overnight.
Cornices are large and looming along many ridgelines and have likely grown with the recent snow and wind.
ight accumulations of new snow could 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.
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 release could have big consequences.
Cornices are large and looming along many ridgelines and have likely grown with the recent wind. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"61th5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"frj0g","text":"Strong solar radiation and warming are common triggers for cornice failures which could trigger large avalanches.
Small wind slabs may lurk on lee features below alpine ridgetops, formed by recent winds from the southwest.
Cornices are large and looming along many ridgelines, and are likely to continue to grow during Wednesday's storm.
Cornices are especially 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.
Cornices are large and looming along many ridgelines, and have likely grown with recent fresh snow and wind.
Cornices are large and looming along many ridgelines and have likely grown with the recent wind. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5ei44","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cj558","text":"Strong solar radiation and warming are common triggers for cornice failures which could trigger large avalanches.
ornices are large and looming along many ridgelines and have likely grown with the recent wind. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2gdjf","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2qpdf","text":"Strong solar radiation and warming are common triggers for cornice failures which could trigger large avalanches.
Cornices are large and looming along many ridgelines and have likely grown with the recent wind. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bnis","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c6nkn","text":"Strong solar radiation and warming are common triggers for cornice failures which could trigger large avalanches.
urface snow can quickly 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.
Dry loose avalanches can be expected in the new snow on steep slopes and terrain features, especially upon seeing the sun for the first time. Where recent snow sits over a crust, they can run surprisingly far and fast while gathering mass.
Wind slabs in lee terrain may still react to human triggers.
Cornices are large and looming along many ridgelines and will have formed fragile new growth with the recent snow and wind. They become increasingly unstable during periods of warming.
Lingering pockets of wind slab may exist 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.
Cornices are large and looming along many ridgelines. They grow increasingly unstable during periods of warming.
Strong solar radiation and warming may trigger the large cornices that hang over ridgelines.
Cornices are large and looming along many ridgelines, and have grown with recent fresh snow and wind. They become increasingly unstable during periods of warming.
Loose-dry avalanches can be expected in the new snow on steep slopes and terrain features. They can surprisingly run far and fast while gathering mass, especially where they sit on a crust.
trong solar radiation and warming will likely trigger the large cornices that hang over ridgelines.
Loose-dry avalanches can be expected in the new snow on steep slopes and terrain features. They can surprisingly run far and fast while gathering mass, especilly where they sit on a crust.
ry loose avalanches can be expected in the new snow on steep slopes and terrain features. They can surprisingly run far and fast while gathering mass, especially where they sit on a crust.
ry loose avalanches can be expected in the new snow on steep slopes, especially if the sun comes out. Where recent snow sits over a crust, loose snow avalanches can run surprisingly far and fast while gathering mass.
Cornices are large and looming along many ridgelines and will have formed fragile new growth with the recent snow and wind.
Cornices are large and looming along many ridgelines, and have likely formed fragile new growth with recent snow and wind.
ry loose avalanches may be possible on steep slopes in the unconsolidated new snow.","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":"
Small wet loose avalanches may start to run naturally on steep solar aspects when the sun comes out.
The snow surface will weaken over the course of the day as warm air and sunny skies prevail. The most likely areas to get into trouble are above terrain traps.
urface snow can quickly lose cohesion and become unstable with strong solar radiation and warm temperatures. Avoid exposing yourself to sunny slopes, especially in the afternoon.
Surface snow can quickly lose cohesion and become unstable with strong solar radiation and warm temperatures. Avoid exposing yourself to sunny slopes, especially in the afternoon.
ornices are at their largest at this time of year, and become weaker with warm temperatures and solar radiation.
Watch for pockets of unstable snow in steep alpine terrain.
trong solar radiation and warming will likely trigger the large cornices that hang over ridgelines. Cornice falls could trigger wind slab avalanches on the slopes below.
Cornices are large and looming along many ridgelines. They will become weak with daytime heating and could trigger avalanches on the slopes below.
trong solar radiation and warming will likely trigger the large cornices that hang over ridgelines. Cornice falls could trigger large avalanches on the slopes below.
Cornices are large and fragile. Warm temperatures and sun exposure will lead to cornice falls. Many natural cornice failures were reported recently. Cornice falls are dangerous on their own and they can trigger slabs on slopes below. There is a chance that the heavy load of a failed cornice triggers deep persistent slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4qhqo","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ecd18","text":"Cornices often break further back than expected. Give them a wide berth when travelling on ridgetops. Avoid slopes with cornices overhead, especially if they are exposed to the sun and during the heat of the day. Take into account long runout distances when travelling underneath slopes with cornices overhead.
Strong solar radiation and warming will likely trigger the large cornices that hang over ridgelines. Cornice falls could trigger large avalanches on the slopes below.
Cornices are large and fragile. Warm temperatures and sun exposure will lead to cornice falls. Cornice falls are dangerous on their own and they can trigger slabs on slopes below. There is a chance that the heavy load of a failed cornice triggers deep persistent slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7u60a","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"46mu0","text":"Cornices often break further back than expected. Give them a wide berth when travelling on ridgetops. Avoid slopes with cornices overhead, especially if they are exposed to the sun and during the heat of the day. Take into account long runout distances when travelling underneath slopes with cornices overhead.
Cornices are large and fragile. Warm temperatures and sun exposure will lead to cornice falls. Many natural cornice failures were reported recently. Cornice falls are dangerous on their own and they can trigger slabs on slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"75al3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a9cng","text":"Cornices often break further back than expected. Give them a wide berth when travelling on ridgetops. Avoid slopes with cornices overhead, especially if they are exposed to the sun and during the heat of the day. Take into account long runout distances when travelling underneath slopes with cornices overhead.
Cornices are large and fragile. Warm temperatures and sun exposure will lead to cornice falls. Many natural cornice failures were reported recently. Cornice falls are dangerous on their own and they can trigger slabs on slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"56i4l","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8ui8n","text":"Cornices often break further back than expected. Give them a wide berth when travelling on ridgetops. Avoid slopes with cornices overhead, especially if they are exposed to the sun and during the heat of the day. Take into account long runout distances when travelling underneath slopes with cornices overhead.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1opns","text":"10 cm of new snow and moderate northwest winds on Monday formed small wind slabs on lee features at treeline and above.
","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ffgev","text":"10 cm of new snow and moderate northwest winds formed small wind slabs on lee features at treeline and above.
We have very little information about the prevalence of this crust in the region, but, 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.
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.
Southwest winds have drifted snow into slabs on lee features that may be possible to trigger at upper elevations. Avoid steep, rocky, or convex features near ridge crests where triggering is possible.
There is currently 90-120 cm of snow sitting on top of weak a layer of sugary facets that developed above crust which formed in early November. Warm temperatures may increase the likelihood triggering deep persistent slabs.
Intense periods of precipitation have the potential to bring buried weak layers to their breaking point. A layer of buried surface hoar and facets that formed in late November and a widespread facet/crust layer from early November have the potential to become sliding surfaces with the stress of the new snow and rain. Easy-to-trigger wet loose or storm slab avalanches have the potential to step-down to these deeper layers and produce large, destructive avalanches.
A crust exists near the base of the snowpack. 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. 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.
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 - see avalanche summary) could trigger the slope below. There is a lot of uncertainty on the reactivity of this layer - we're keeping it on our radar because we don't have enough information. And if this layer is triggered, it will likely produce large avalanches. This problem does not exist in the south of the region.
A crust buried near the bottom of the snowpack has been responsible for a few large avalanches in the past week.
Basal facets 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 avalanches may also have the potential of stepping down to this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":0,"length":12,"key":0},{"offset":209,"length":13,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=basal+facets"}},"1":{"type":"LINK","mutabilit
ingering wind slabs may remain reactive to human triggers on a wide range of aspects.
The base of the snowpack has been reported as being composed of weak and sugary faceted grains for much of the region. The most likely area to trigger it would be on slopes where the snowpack is thin, such as near rocky outcrops.
Basal facets 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 avalanches may also have the potential of stepping down to this layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":0,"length":12,"key":0},{"offset":209,"length":13,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=basal+facets"}},"1":{"type":"LINK","mutabilit
Basal facets 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 avalanches or cornice collapse may also have the potential of stepping down to this layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":0,"length":12,"key":0},{"offset":229,"length":13,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=basal+facets"}},"1":{"type":"LINK","mutabilit
The base of the snowpack has been reported as being composed of weak and sugary faceted grains for much of the region. The most likely area to trigger this deep weak layer would be on slopes where the snowpack is thin or transitions quickly from thin to thick, such as near rocky outcrops.
Basal facets have the potential of forming large and destructive avalanches and continues to show up in test pits as reactive. The most likely place to trigger this layer would be on shallow and rocky slopes. Smaller avalanches or cornice collapse may also have the potential of stepping down to this layer. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":0,"length":12,"key":0},{"offset":279,"length":13,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary?q=basal+facets"}},"1":{"type":"LINK","mutabilit
A crust buried near the bottom of the snowpack has been responsible for some very large explosive triggered avalanches up to size 4.
A crust buried near the bottom of the snowpack has been responsible for at least one large avalanches in the past week.
Small wet loose avalanches or cornice falls may trigger deeper weak layers, resulting in large avalanches.
Two crusts with weak faceted grains overtop are buried deep within the snowpack. The upper layer is 80 to 130 cm deep and the lower is near the ground. A few large avalanches have run naturally on these layers recently. The likelihood of triggering these layers is low but the consequence of doing is high.
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.
Shifting wind has deposited snow into deeper slabs on leeward slopes. This problem can be managed by navigating around wind affected slopes, but keep in mind this is not the only problem in the snowpack right now.
Two crusts with weak faceted grains overtop are buried deep within the snowpack. The upper layer is 80 to 130 cm deep and the lower is near the ground. A few large avalanches have run naturally on these layers recently. This problem is most prominent in thinner snowpack areas in the west of the region.
Recent snow and extreme winds have formed large and fragile cornices that could trigger large avalanches when they fail. Avoid traveling under cornices during periods of intense sunshine.
A persistent slab problem exists throughout the region. 30-80 cm sits on a buried weak layer that consists of facets, surface hoar, or a crust, depending on location. Avalanche activity has been limited, but we are wary of smaller wind or storm slab avalanches stepping down to this layer.","type":"unstyled","depth":0,"inlineSt
New wind slabs may exist in leeward terrain features at upper elevations. Continuing light flurries and intermittently elevated winds should keep this problem reactive (but small) in the coming days.
Wet loose avalanches are likely when the sun pokes out and freezing levels rise. Be observant as you travel, and look for signs of warming and snowpack instability. Snowballing, moist snow, and the most obvious is natural avalanche activity. Back off slopes and adjust your trip plan when things are heating up.
Wet loose avalanches are likely as the sun pokes out and freezing levels rise. Be observant as you travel, and look for signs of warming and snowpack instability. Snowballing, moist snow, and the most obvious is natural avalanche activity. Back off slopes and adjust your trip plan when things are heating up.
Wet loose avalanche activity is most likely above around 1200 m, as the recent snow moistens from daytime warming. Use caution on sun-exposed slopes during the heat of the day.
Persistent slab avalanches are most likely in the northern Purcells where there has been recent avalanche activity on a 40-80 cm deep layer of surface hoar, facets, and/or crusts (see Avalanche Summary).
Wet loose avalanches may occur at all elevations but be more predominant at treeline and below due to fluctuating freezing levels. Obvious signs are natural avalanches, snowballing, moist, and sticky snow surfaces. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7lan","text":"Large, looming cornices exist along ridgelines. They may become weak and fail during periods of warming on Thursday.
Wind slabs are expected to be reactive in lee terrain with ongoing moderate to strong southerly wind. Previous variable wind direction means that wind slabs may be found on all aspects, but the most reactive ones will be found on northerly aspects.
Warming temperatures could temporarily increase the likelihood of large persistent slab avalanches. There are two potential layers of concern buried 60-120 cm deep across the region that have produced some sporadic activity over the past weeks.
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.
Wet loose avalanches are likely when the sun comes out and freezing levels rise. Watch for signs of warming and snowpack instability such as rolling snowballs, moist snow and natural avalanche activity.
Wet loose avalanches are likely as the sun comes out and freezing levels rise. Watch for signs of warming and snowpack instability such as rolling snowballs, moist snow, and natural avalanche activity.
This problem can be found in the north of the region in areas around Pine Pass where up to 35 cm of new snow fell accompanied by strong wind by Saturday morning. Wind slabs may be resting on a sun crust on solar aspects which could allow avalanches failing to run further and faster than you'd normally expect.
A wet loose avalanche problem may exist in the south of the region, where freezing levels are expected to remain above 2000 m overnight and into midday on Friday. ","type":"unstyled","depth":0,"inlineStyle
Wet loose avalanches may still be possible on Saturday. The cooling trend is expected to be slow, with above freezing temperatures persisting for much of the day. Watch for signs of warming and snowpack instability such as rolling snowballs, moist snow and natural avalanche activity.
Solar input and warm temperatures may weaken the upper snowpack and form wet loose avalanches. These avalanches will most likely occur on steep solar slopes and around rock outcrops. The likelihood for wet loose avalanches will increase with daytime heating. 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":"ej8s3","text":"Even small avalanches can be a hazard in high consequence terrain and above terrain traps.
Recent convective flurries in parts of the region, solar radiation, 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.
Wet loose avalanches may release naturally on low elevation or 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.
A warming trend will likely weaken the snow surface, particularly on sun-exposed slopes midday. The most likely areas to get into trouble would be on steep slopes above terrain traps.
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 are expected to be most prevalent in the north of the region.","type":"unstyled","depth":0,"inlineSty
Recent snowfall has blanketed the terrain with a widespread storm slab problem. Monitor for the reactivity of the new snow and old snow interfaces and for density changes within the new snow where you travel.
Wet loose avalanche activity is most likely at higher elevations, as the recent snow moistens from daytime warming. Use caution on steep sun-exposed slopes during the heat of the day.
Solar input and warm temperatures may weaken the upper snowpack and form wet loose avalanches. These avalanches will most likely occur on steep solar slopes and around rock outcrops. The likelihood for wet loose avalanches will increase with daytime heating. 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.
Wet loose avalanche activity is only likely when a moist or wet snow surface is found. Resulting avalanches are expected to be small, but use particular caution on very steep slopes with high consequence. If a hard melt-freeze crust persists, the likelihood of avalanche activity is low.
Naturally triggered wet loose avalanches are possible; especially on steep solar aspects in the alpine.
Persistent weak layers that were buried in January and February could reactivate during this relatively warm period. Assess for these layers and look for clues of instability.
Wet loose avalanche activity is possible if sunny skies prevail. Use caution on steep, sun-exposed slopes during the heat of the day. The problem is likely most prevalent in the north of the region where more snow accumulated.
Cornices are large and likely weakening with sustained elevated freezing levels and significant daytime heating. Big cornice falls are a hazard on their own but can also trigger large persistent slab avalanches on the slopes below.
This problem can be found in the north of the region in areas around Pine Pass where up to 35 cm of new snow fell as of Saturday morning.  This snow may be resting on a sun crust on solar aspects which will allow avalanches failing in the storm snow to run further and faster than you'd normally expect.
Cornices are large and likely weakening with sun and significant daytime heating. Big cornice falls are a hazard on their own but can also trigger large persistent slab avalanches on the slopes below.
Wet loose avalanche activity is most likely at higher elevations, as the recent snow moistens from daytime warming. Use caution on steep sun-exposed slopes during the heat of the day. The problem is likely most prevalent in the north of the region where more snow accumulated.
Wet loose avalanche activity is possible if sunny skies prevail. Use caution on steep, sun-exposed slopes during the heat of the day.
A bit more recent snow than expected has likely formed new wind slabs to manage in leeward terrain at upper elevations. Forecast light snow and high elevation winds should keep the possibility for this problem at top of mind as you reach exposed terrain.
A persistent weak layer of sugary facets continues to lurk deep in the snowpack. Three large avalanches (size 2-3) have failed on this interface in the past week. The first two occurred last weekend during an intense warm-up and the third was initiated by a cornice failure yesterday near McBride. These avalanches were all reported from northeasterly slopes in the alpine. The persistent slab will likely need a large trigger, however, the weight of a person plus a machine might just be enough. This is a low probabilty but high consequence scenario and very hard to predict.
Wet loose avalanches are possible below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fma9f","text":"Dry loose avalanches will be very likely on steep south facing slopes at upper elevations when the sun comes out in the afternoon.
0-50 cm of snow has recently fallen at upper elevations. Strong and changing ridgetop winds from the southwest to the northwest may have formed wind slabs on many aspects and could be reactive to human triggering on alpine slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2ucnt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9mcjo","text":"
New wind slabs exist in leeward terrain features at upper elevations. Continuing light flurries and intermittently elevated winds should keep this problem reactive (but small) in the coming days.
Use caution on steep sun-exposed slopes during the heat of the day if sunny skies prevail, which is forecast for the north of the region (e.g., Duffey, Hurley). The problem is most likely a potential concern at higher elevations where recent snow has accumulated.
Wet loose avalanche activity is possible if sunny skies prevail. This will be the first time all the recent snow has seen a good warm-up so avoid sun-exposed slopes should you find wet, sticky snow.
Use caution on steep sun-exposed slopes during the heat of the day if sunny skies prevail. The problem is most likely a potential concern at higher elevations where recent snow has accumulated.
Watch for wind slabs as you transition into wind affected terrain. Southwesterly winds have been loading lee terrain, especially near ridge crests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"64ssl","text":"
Watch for wind slabs as you transition into wind affected terrain. Southerly winds have been loading lee terrain, especially near ridge crests.
Cornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind. Direct sun and rising freezing levels can weaken cornices significantly.
oose avalanches can be expected in the new snow on steep solar aspects and at elevations where air temperature rises above freezing. Below treeline, loose wet avalanches are possible where snow did not refreeze overnight.
0-40 cm of fresh snow has recently fallen at upper elevations. Strong and changing ridgetop winds from the southwest to the northwest may have formed wind slabs on many aspects. Wind slabs may be reactive to human triggering on Wednesday. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2ucnt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9mcjo","text":"
Small loose avalanches can be expected in the new snow on steep solar aspects and at elevations where air temperature is above freezing. Below treeline, loose wet avalanches are possible where snow did not refreeze overnight.
et loose avalanches are possibly below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"do0ds","text":"Dry loose avalanches will be very likely on steep south facing slopes at upper elevations when the sun comes out in the afternoon.
Wet loose avalanches are possible below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"35ul5","text":"Dry loose avalanches will be very likely on steep south facing slopes at upper elevations when the sun comes out in the afternoon.
et loose avalanches are possible on steep south facing slopes and at elevations where air temperatures rise above freezing.
Small loose avalanches can be expected in the new snow on steep solar aspects and at elevations where air temperature rises above freezing. Below treeline, loose wet avalanches are possible where snow did not refreeze overnight.
Wet loose avalanches are possible on steep south facing slopes and at elevations where air temperatures rise above freezing.
solated wind slabs may still react to human triggering in steep features at ridgecrest.
The recent snow may moisten and form wet loose avalanches during the heat of the day, especially on sun-exposed slopes.  The most likely areas to get into trouble would be on steep slopes above terrain traps.
The recent snow may moisten and form wet loose avalanches on sun-exposed slopes if clear skies prevail.
Isolated wind slabs may still react to human triggering in steep features at ridgecrest.
Wet loose avalanches may start to run naturally on steep solar aspects when the sun comes out.
The snow surface will begin to weaken as warm air and sunny skies prevail. Resulting avalanches are anticipated to be small, so the most likely features to get into trouble are above terrain traps.
Wet loose avalanches may be possible on steep slopes exposed to strong sun.
Isolated wind slabs may still react to human triggering in steep features at ridgecrest.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3vpvt","text":"
et loose avalanches may be possible on steep slopes exposed to strong sun.","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":"
Lingering wind slabs formed by 20-30 cm of recent snow and previously strong winds may remain reactive on lee features on all aspects in the alpine.
Dry loose avalanches may be possible on steep slopes in the unconsolidated new snow.
The potential for strong sun and rising temperatures midday may produce wet loose avalanches in the recent snow.
xpect natural wet loose avalanches to occur on solar aspects if 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 natural wet loose avalanches to occur on solar aspects if the sun comes out.
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":"
A prolonged period of warm air and sunny skies will start to warm the snowpack, increasing the likelihood of reactivating buried weak layers. It is uncertain if and when large slab avalanches may release, but the possibility remains during this warm period. The most likely areas for deeper releases include rocky and thin snowpack areas.
Watch for pockets of unstable snow on steep exposed slopes.
Lingering wind slabs formed by 20-30 cm of recent snow and wind may still be reactive on lee features on all aspects in the alpine.
Prolonged warming could increase the sensitivity of deeply buried layers in the snowpack. While these layers have not been reactive lately, you should practice increasing caution during this period of warm weather. Thin rocky slopes are most suspect.
Each day of warm weather increases the likelihood of reactivating buried weak layers. It is uncertain if and when large slab avalanches may release but the possibility remains during this warm period. Deeper releases are most likely in shallow snowpack areas on the eastern slopes of the Purcells. Heavy cornice falls might trigger large slab avalanches. Skiers and riders might be able to trigger buried weak layers in rocky and shallow snowpack areas.
Prolonged warming could increase the sensitivity of deeply buried layers in the snowpack. While these layers have not been reactive lately, you should practice increasing caution during this period of warm weather. Steep rocky terrain with a shallow or thin to thick snowpack are most suspect.
arefully assess steep lines for wind slabs.
Overhanging cornices have been observed in the region.
Fresh wind slabs will likely form on lee features at treeline and above on Wednesday.
Rider triggerable wind slab likely still exists in specific features near ridge crests.
Small wet loose avalanches are possible on slopes where fresh snow is getting hit by the sun.
Wind slabs may be found in steep, lee terrain features in the high alpine.
Watch for deeper pockets of unstable snow near ridgetops.
Recent weather has likely left unstable wind slabs at upper elevations, especially on the leeward side of ridges. Pay attention to the look and feel of the surface snow, as slab formation could also become more widespread. If slabs develop, they could be poorly bonded to the underlying crust.
Strong to extreme winds have blown recent storm snow into thick wind slabs in lee terrain features and cross-loaded slopes at upper elevations. Wind slabs may be especially reactive where they sit on top of a slick crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1hb4o","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5ogi8","text":"Cornices have reportedly formed along ridgelines. Cornice failures can trigger avalanches on the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bj7g5","text":"
Recent snow has likely been redistributed by strong southwest winds in the alpine, forming wind slabs in lee terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7pmj5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"56vrd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c86nk","text":"
Winds redistributing the recent dusting of fresh snow may build thin slabs in isolated features around ridges and steep alpine-like terrain. In general, any fresh snow will not bond well to the crust.
New snow and wind are forming fresh, reactive slabs. Be aware of the potential for deeper than expected storm slabs due to the presence of a buried crust in the upper snowpack.
Recent weather has likely left unstable wind slabs at upper elevations, especially on the leeward side of ridges.
Large wind slabs will be found in the alpine and upper treeline.  These slabs will remain sensitive to rider traffic. Avoid wind loaded terrain.
Winds have been changing direction over the last few days. Wind slab could exist on all aspects in the treeline and alpine.  Sensitivity to triggering will be greatest where wind slab has formed above the recent crust.
Reactive storm and wind slabs will still be found in the treeline and alpine. use extra caution near ridgelines and in exposed terrain where wind effect is a factor.
Wind slabs are likely to be found near ridgelines and exposed terrain in the treeline and alpine.
New snow and wind are forming fresh, reactive slabs.
Storm slabs will be most reactive where deeper deposits have been wind loaded into lee aspects. Avoid these areas until they have a chance to stabilize.
10-40 cm low density snow overlies a crust. Be wary of reactive pockets where wind has redistributed snow and forms a slab.
Wind slabs may have formed in the alpine during Wednesday's storm. Watch out for areas of hard wind slab as you transition into the alpine.
Isolated wind slabs may lurk around ridges and steep terrain. Be mindful transitioning into steep alpine-like features at treeline.
New wind slabs will likely be limited in size but touchy due to the surfaces they are forming on. Avoid features where even a small avalanche could be consequential.
Southwest winds will transport new snow into wind slabs in the alpine. These wind slabs will likely be small but fail easily where the rain crust is present below.
Wind slabs in the treeline and alpine will remain reactive to rider traffic. Use extra caution near ridgelines.
Yesterday's forecaster blog does a great job of capturing the challenging travel and decision-making we'll likely encounter in the backcountry right now. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":12,"length":15,"key":0}],"data":{}},{"key":"a37qj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1k2mc","text":"Slabs may be especially reactive where they sit on top of a slick crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d8epo","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3stu3","text":"Watch for wind loading on all aspects due to recent variable wind directions.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LIN
Southerly winds and continued snowfall will form new wind slabs at the treeline and above. Cracking and whumping are an indication of wind slabs in the upper snowpack. Remember that if triggered, wind slabs have the potential to step down to deeper layers.
New wind slabs will form from southwesterly winds transporting new snow into leeward features in the alpine. Wind slabs will likely be small but fail easily where a thick rain crust is present below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":77,"length":16,"key":0}],"data":{}}],"entityMap":{"0":{
Last week's snowfall combined with consistent southerly winds created thick wind slabs in the alpine and treeline. Recent northerly winds may cause reverse loading, and create fresh wind slabs on southerly aspects. A significant drop in temperature in the past 24 hours will likely stiffen these wind slabs, but human triggering remains possible. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":148,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
Recent weather has likely left some unstable wind slabs at upper elevations, especially on the leeward side of ridges. Pay attention to the look and feel of the surface snow, as slab formation could also become more widespread. If slabs develop, they could be poorly bonded to the underlying crust.
The region picked up 15 to 20 cm of new snow Tuesday & Wednesday without much wind. There was likely enough southerly wind for isolated wind slabs north facing terrain where it has likely been formed into slabs.
New snow has us watching for storm slabs at all elevations, but don't forget that in the last week, strong to extreme winds formed thick wind slabs in lee terrain features and cross-loaded slopes at upper elevations. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"aaqog","text":"An avalanche in the storm snow may trigger a deeper wind slab underneath. Slabs may be especially reactive where they sit on top of a slick crust.
Winds have been changing direction over the last few days. Wind slab could exist on all alpine aspects and steep alpine-like features at treeline. Sensitivity to triggering will be greatest where wind slab has formed above the recent crust.
Varied winds over the past week have created wind slabs almost everywhere, but they seem to be most reactive on northeast facing features. Cold temperatures over the past few days have decreased the likelihood of human triggering, but keep in mind that if triggered, wind slabs can step down to the late October crust, creating larger spooky avalanches.
Wind slab avalanches may still be triggered by riders. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8ib7d","text":"Anywhere that soft snow remains available for wind transport, new wind slabs could be forming due to a change in wind direction.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":46,"length":14,"key":0}],"data":{}},{"key":"56vrd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c86nk","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":
New snow and strong ridgetop wind have formed reactive storm slabs. Deeper slabs will exist on leeward slopes and behind terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5ogi8","text":"Cornices have reportedly formed along ridgelines. If they fail, they could trigger an avalanche on the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bj7g5","text":"
Wind slabs may lurk around ridges and steep terrain. Be mindful transitioning into steep alpine-like features at treeline.
Variable winds impacting new flurries and loose snow may deposit reactive pockets around ridges and steep alpine-like terrain. In general, any fresh snow is not bonding well to the crust - be mindful that new slabs can form with fresh winds.
There is a lot of new snow available for wind transport and by Saturday morning, new wind slabs will have formed in exposed, upper treeline areas and in the alpine. The wind was particularly strong in inland areas around Paddy Peak and Powder Valley. Keep in mind that the wind is forecast to change from south to north during the day on Saturday so remain aware of where snow is being distributed as you travel through the terrain.
Varied winds over the past week will have created wind slabs on all aspects of the alpine and treeline. Cold temperatures over the past few days will likely stiffen these slabs. This will decrease the likelihood of human triggering, but keep in mind that if triggered wind slabs can step down to the late October crust, creating larger avalanches.
Large reactive storm slabs will develop with ongoing storm snow and strong southwesterly winds leading to a widespread natural avalanche cycle during the day.
Wind slabs in lee terrain features in the alpine may remain sensitive to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":14,"length":3,"key":0}],"data":{}},{"key":"a7gea","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"50ube","text":"Cornices have grown recently and have proven to be reactive to human and explosive loads.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{
50-100 cm of new snow has fallen in the past week, with another 30-40 cm to come throughout the day today. This amount of new snow will put significant new load on the snowpack, and is   likely to create avalanches in many areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dmbr1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f02ug","text":"In wind exposed areas, strong southwest winds will create deep deposits of wind slab. In sheltered areas, the new snow will acts as a storm slab or loose dry problem.
Changing winds and light snowfall amounts may form touchy wind slabs on all aspects above treeline.  Cracking and whumfing in the upper snowpack are indicators of wind slab. Human triggering is possible. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"omk3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"atlp9","text":"
New snow and wind form fresh storm slabs over previously wind affected surfaces. Be aware of the potential for deeper than expected storm slabs around treeline due to the presence of a buried crust in the upper snowpack below 1800 m.
40-60 cm of new snow has fallen since Friday evening. The new snow will likely form a reactive storm slab problem across all aspects. In areas where the new snow is not forming a slab, it will react as a touchy loose dry problem. Anticipate larger, more reactive slabs in wind-drifted areas.
ednesday's storm brought significant rain that saturated the snowpack. Cooling temperatures will help to decrease the likelihood of loose wet avalanches, but steep slopes will remain likely places for wet loose avalanches to occur - especially with a human trigger.
Westerly winds will create new wind slabs in the alpine and treeline. These wind slabs will be reactive to human triggering where they overlie a thick rain crust.
Isolated wind slabs may be found at higher elevations. Investigate the bond between the slab and the old snow surface, they may still be reactive to a human trigger.
Storm slabs have been recently reactive to human triggers, with more sensitive deposits at upper treeline and above. Fresh slabs will form Saturday as increasing winds impact new flurries and loose, dry snow. Expect to find the deepest deposits and most reactive slabs around ridges and in open terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2p2mu","text":"Around the Toby Creek drainage storm slabs may sit on a touchy surface hoar layer at treeline and below. This interface may result in larger avalanches, wider propagation and slabs that are more sensitive to human triggers.
trong westerly winds will continue to build wind slabs in the alpine and treeline. Approach ridge crest and wind loaded features with caution. These wind slabs will be most reactive to human triggering where they overlie a thick, smooth rain crust.
eavy snowfall combined with strong winds has formed large wind slabs in leeward terrain features in the alpine.
oderate to strong west and southwest winds continue to build wind slabs in the alpine and treeline. Watch for reactive wind slabs around ridges and loaded terrain features. Recent wind patterns have been variable, slopes may be reverse loaded.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":229,"length":14,"key":0}],"data":{}}],"entityMap":{"0":{"typ
atch for reactive wind slabs around ridges and loaded terrain. Recent wind patterns have been variable, slopes may be reverse loaded.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":119,"length":14,"key":0}],"data":{}}],"entityMap":{"0":{"typ
This week's new snow will continue to be redistributed by strong westerly winds, creating fresh wind slabs in the alpine and treeline. Cold, clear temperatures prior to this storm may have created a weak layer below the new snow, which could increase the likelihood of these avalanches occurring.
0-70 cm of new snow has formed a fresh storm slab problem across elevations and aspects that may remain reactive to human triggering. Strong south winds during the storm likely built larger, more sensitive slabs in wind-drifted areas at upper elevations.
Heavy snowfall combined with strong winds has formed large wind slabs in leeward terrain features in the alpine.
arge reactive storm slabs will develop with ongoing storm snow and strong southwesterly winds leading to a widespread natural avalanche cycle during the day.
Southwest winds will redistribute new snow into wind slabs in the alpine and treeline. These wind slabs may overlie a weak layer of facets or a thin rain crust below 1300m. These weak layers will increase both the reactivity and propagation potential of wind slabs, particularly when a crust is present below.
A potential push of fresh snow moves us back into watching for storm slabs at all elevations, but don't forget that in the last week, strong to extreme winds formed thick wind slabs in lee terrain features and cross-loaded slopes at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6rl0e","text":"An avalanche in the new storm snow may trigger a deeper windslab underneath.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"30v49","text":"Slabs may be especially reactive where they sit on top of a slick crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fl7t9","text":"Cornices have reportedly formed along ridgelines. Cornice failures can trigger avalanches on the slope below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bj7g5","text":"
esterly winds will redistribute new snow into wind slabs in the alpine and treeline. Wind slabs will fail easily where a thick rain crust is present below.
Yesterday's forecaster blog does a great job of capturing the challenging travel and decision making we'll likely encounter in the backcountry right now. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":12,"length":15,"key":0}],"data":{}},{"key":"58duc","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"barr4","text":"Wind slabs are likely to be found near ridgelines and exposed terrain in the treeline and alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LIN
Storm slabs remain reactive to human triggers, the snowpack will take time to gain strength from a significant new load of snow, rain and wind. Use caution around wind effected terrain features and lee (wind loaded) slopes where triggering is more likely. Be wary of large slopes that have not avalanched.
s upper level winds shift northwest Saturday, any available soft snow in the alpine may be reverse-loaded into new features. Human triggering potential exists for these new wind slabs as well as older wind slabs from previous westerly winds.
Wind loaded features are the bigger concern right now, but lingering storm slabs may still need a day or two to settle and bond.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3j36p","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"aaqog","text":"Slabs may be especially reactive where they sit on top of a slick crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d8epo","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3stu3","text":"Watch for wind loading on all aspects as the winds have changed directions this weekend.
New snow will slide easily on the slippery crust. Loose dry sluffing is very likely, especially with human or vehicle traffic.
ind transport was ongoing on Thursday, likely leaving new wind slabs perched in leeward terrain features. These could be reactive to human triggering on Friday. Alpine is the primary concern but specific upper treeline features may hold small new slabs as well.
Wednesday will be the second day of heavy rain saturating the snowpack. Steep slopes will remain likely places for wet loose avalanches to occur - especially with a human trigger.
ontinuing snowfall at higher elevations is developing storm slabs that will be primed to release naturally or with a human trigger on Wednesday. More heavy loading and rising freezing levels with the ongoing storm will result in increasing avalanche activity. Avalanches have the potential to be larger than expected if they step-down to a deeper crust/facet layer. This layer was active even before the current storm.
Wind slabs will continue to develop with new snow and strong southerly wind. Expect to find them in steep, lee terrain features near ridges.
rider triggerable storm slabs will still be found throughout the region. Sensitivity to triggering will be greatest near ridge lines and exposed terrain in the alpine and treeline where wind is a factor.
New snow is expected to rapidly accumulate on Friday, accompanied by strong southwest winds and a gradual rise in temperature. Anticipate the development of a touchy, widespread storm slab problem as snow accumulates.
Storm slabs may be found at higher elevations. Investigate the bond between the slab and the old snow surface, they may still be reactive to a human trigger.
As upper level winds shift northwest Saturday, any available soft snow in the alpine may be reverse-loaded into new features. Human triggering potential exists for these new wind slabs as well as older wind slabs from previous westerly winds.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"56ahj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"39kj0","text":"Cornices have grown recently and have proven to be reactive to human and explosive loads.
trong winds and fresh snow has built wind slabs in lee features in the alpine and treeline. Approach ridge crest and crossloaded features lower on slopes with caution, variable winds have created unusual loading in some areas.
Rider triggerable storm and wind slabs will still be found around the region. Use extra caution in wind effected terrain in the treeline and alpine.
Yesterday's forecaster blog does a great job of capturing the challenging travel and decision making we'll likely encounter in the backcountry right now. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":12,"length":15,"key":0}],"data":{}},{"key":"7jduq","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4p9fk","text":"Wind slab avalanches may still be triggered by riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"74in7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"56vrd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c86nk","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LIN
Expect rider triggerable  storm and wind slabs throughout the region. This problem is more significant in the North of the region. Use extra caution on lee slopes and wind effected terrain.
Storm slab size and sensitivity to triggering will increase at upper elevations as the storm progresses through the day Wednesday. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5fan","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1p8h5","text":"There may be potential for storm slab avalanches to step down to a buried crust, producing very large avalanches that could run to below treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fj7r","text":"
Fresh, reactive storm slabs will build throughout the day with heavy new snow and wind. Large avalanches may run into lower elevations in areas of heavy snowfall. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"br7k9","text":"
Heavy snowfall turning to rain will release storm slabs that are likely to be thicker in lee terrain features. More loading and rising freezing levels with the ongoing storm will result in increasing avalanche activity. Avalanches have the potential to be larger than expected if they step-down on the deeper combo crust / facets.
New snow and strong ridgetop wind have likely formed reactive storm slabs. Deeper slabs will exist on leeward slopes and behind terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7pmj5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"56vrd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c86nk","text":"
Expect storm slabs to build at all aspects / elevations, especially behind lee features, throughout the day Wednesday as consistent snowfalls will impact the region. Increased amounts are expected in the Monashees with this strong southwesterly flow. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":7,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTA
Fresh storm slabs will be reactive on Wednesday.
Wind slabs are bonding poorly to the icy crust below. Expect conditions to remain reactive to human triggers. Approach ridge crest and cross loaded features with caution.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9mljs","text":"Investigate conditions before exposing yourself to steep or exposed features.
Storm slabs remain reactive to human triggers, with deeper and more sensitive deposits in high elevation wind loaded terrain features from the strong south/west winds.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cbtpp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fq8rp","text":"Storm slabs in the Toby Creek drainage may sit on a touchy surface hoar layer at treeline and below. This interface may result in larger avalanches, wider propagation and storm slabs that are more sensitive to human triggers. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":226,"style":"ITALIC"}],"entityRanges":[],"data":{}},{"key":"di79s","text":"Take the time to investigate the bond between the storm slab and old snow surface. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ert2d","text":"
Wind transport was ongoing on Thursday, leaving wind slabs perched in leeward terrain features that will likely still be reactive to human triggering on Friday. Alpine is the primary concern but upper treeline features holding new wind slabs were observed Thursday.
ew snow and strong overnight wind will form wind slabs in lee terrain features at upper elevations. They may be especially reactive where they sit on a weak layer of surface hoar or a slippery crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":167,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type
New snow is expected to rapidly accumulate on Friday, accompanied with strong southwest winds and a gradual rise in temperature. Anticipate the development of a touchy, widespread storm slab problem as snow accumulates.
Wednesday's storm brought significant rainfall that saturated the snowpack. Cooling temperatures will help to decrease the likelihood of loose wet avalanches, but steep slopes will remain likely places for wet loose avalanches to occur - especially with a human trigger.
Large wind slabs have developed over the last week of heavy snowfall and winds affecting treeline and alpine terrain. Wind slabs may be sitting lower in the slope than you expect, from the strong to extreme winds. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6433c","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5c4m4","text":"Be wary of large slopes that have not avalanched and avoid wind effected terrain features like ridge crests and cross loaded slopes. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":112,"length":21,"key":0}],"data":{}}],"entityMap":{"0":{"type":"L
New snow will slide easily on the slippery crust. Loose dry avalanches will likely run naturally in steep terrain, while cohesive slab formation is most likely in wind affected areas.
Storm slabs remain reactive to human triggers, the snowpack will take time to gain strength from a significant new load of snow, rain and wind. Investigate the bond between the storm slab and old snow surface. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ert2d","text":"Use caution around wind effected terrain features and lee (wind loaded) slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"atub4","text":"Storm slabs in the Toby Creek drainage may sit on a reactive surface hoar layer at treeline and below.
Heavy new snow and wind will build large storm slabs through the day. A natural avalanche cycle is expected with this new and heavy load added to the snowpack. Expect large and destructive avalanches that may run full path into lower elevations.
Heavy snowfall, strong winds and rising freezing levels will contribute to the new snow rapidly forming slabs at higher elevations that will increase in both reactivity and destructive potential. Below treeline hazard reflects the potential for large avalanches to initiate at upper elevation bands and run to valley bottom.
Large wind slabs have developed over the last week with heavy snowfall and winds affecting treeline and alpine terrain. Recent strong to extreme winds developed slabs lower in the slope than usual. Fresh slabs may form Saturday as increasing winds impact new flurries and any loose, dry snow.
Increasing winds will quickly redistribute new flurries. Reactive deposits will form around ridge features and lee terrain. Investigate the bond between the slab and the old snow surface, wind slabs may be reactive to a human trigger.
New snow will slide easily on the slippery crust. Thin pockets of soft wind slab may be surprisingly reactive.
Strong westerly winds will continue to build wind slabs in the alpine and treeline. Approach ridge crest and wind loaded features with caution. These wind slabs will be most reactive to human triggering where they overlie a thick, smooth rain crust.
Wind speeds will increase as a weak frontal system crosses the region on Tuesday. The wind will likely form some unstable slabs on the downwind side of ridges.
layer of weak facets (sugary snow) can be found down 100-180 cm near a crust layer that formed in early December. The persistent slab problem has demonstrated recent instability, and it may be possible to human trigger. Avoid likely trigger spots such as steep, rocky slopes with a shallow or thin to thick snowpack.
reactive storm slabs will likely still be found throughout the region.Use extra caution on lee slopes and exposed terrain in the treeline and alpine as these slabs will be more reactive where wind loading is a factor.
Incremental snowfall over the past week combined with west and southwest winds has formed wind slabs in lee terrain features that may be possible to human trigger. This problem may be particularly pronounced where the snow is poorly bonded to a crust. Expect the hazard to increase throughout the day with incoming snow and wind.
ncremental snowfall over the past week with moderate winds from multiple directions has formed slabs in wind-exposed areas. Wind slabs may be reactive to human triggering, especially where the snow is not well bonded to a buried crust. In areas that received higher snow totals in the south of the region, expect this problem to be more widespread.
Rider triggerable wind slab will likely still be found at treeline and above. Sensitivity could be greater in areas where wind slab has formed over a crust, facets or surface hoar.
Significant and rapid accumulations of snow accompanied with strong southwest winds are building a widespread reactive storm slab problem. The additional snow and strong wind forecast for Saturday  could make this problem even more touchy, particularly in wind-exposed areas. Storm slab avalanches will likely be large and run far on the underlying crust. Stick to simple, low-angle slopes with no overhead hazard.
ew snow with strong wind is forming widespread, reactive slabs. Expect this problem to be more pronounced in wind-drifted areas. Closely monitor how the new snow is bonding to the old surface, and back off terrain where you see more than 25 cm of new snow.
New snow and wind are forming fresh slabs. Where previous days' snow sits over a weak layer, slab avalanches could be larger than expected and slide easily on a crust.
The recent snow loaded a weak layer of surface hoar crystals, which is at a prime depth for human triggering. The layer exists at all elevation bands and has recently been very reactive between 1600 and 2200 m. Example terrain features to particularly treat as suspect include the lee side of ridges, openings in trees, cut blocks, and burns.
Significant and rapid accumulations of snow accompanied with strong southwest winds have formed a widespread reactive storm slab problem. The additional snow and strong wind forecast for Saturday  could make this problem even more touchy, particularly in wind-exposed areas. Storm slab avalanches will likely be large and run far on the underlying crust. Stick to simple, low-angle slopes with no overhead hazard.
With continuing snow in the forecast, sustained southwest winds will have an ongoing supply of fresh snow to drift into wind slabs on lee slopes at upper elevations. These wind slabs will likely be reactive to human triggering.
New wind slab will form throughout the day on Tuesday in treeline and alpine. Cross loaded features from previous outflow will likely still be rider triggerable. Other areas of additional concern are isolated features in the treeline  where wind slab could have formed over surface hoar creating a heightened sensitivity to triggering.
New snow and ongoing moderate to strong southerly winds continue to form reactive wind slabs in exposed terrain. These slabs may overlie a weak interface and could remain reactive longer than normal.
mall inputs of new snow along with moderate wind will feed wind slabs in the alpine and upper treeline. Watch for fresh deposits in lee terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":133,"length":3,"key":0}],"data":{}},{"key":"3o0tu","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3cop","text":"Low density surface snow that hasn't formed a slab may also slide easily on a slippery crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{
As wind increases on Tuesday and Wednesday we expect to see some unstable slabs forming on leeward terrain, especially along ridges. Wind slabs could be poorly bonded to the underlying crust.
Wind speeds will increase as a weak frontal system crosses the region on Tuesday. The wind will likely form some unstable slabs on the downwind side of ridges. Wind slabs could be poorly bonded to the underlying crust.
Rapid settlement due to an overnight spike in temperature will likely further destabilize storm slabs, precariously perched on a slick crust. Over the day, however, the warm temperatures may even facilitate bonding at the snow/crust interface. You can dig down to investigate.
nywhere soft surface snow remains available for transport, we expect wind slab development as winds pick up late Tuesday. Although thin, they may be surprisingly reactive where they sit on a weak layer of surface hoar or a slippery crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":206,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type
Expect the bond between new snow and the rain crust to be poor, investigate conditions before exposing yourself to steep or exposed features. Deeper deposits will be found in wind loaded terrain features. Approach ridge crest and cross loaded features with caution.
esterly winds will continue to build wind slabs in the alpine and treeline. Approach ridge crest and wind loaded features with caution, variable wind directions may create reverse loading patterns. These wind slabs will be most reactive to human triggering where they overlie a thick, smooth rain crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":173,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"typ
oderate west and southwest winds continue to build wind slabs in the alpine and treeline. Watch for reactive wind slabs around ridges and loaded terrain features. Slab will be most reactive if they sit on a smooth crust.
Westerly winds will continue to build wind slabs in the alpine and treeline. Approach ridge crest and wind loaded features with caution. These wind slabs will be most reactive to human triggering where they overlie a thick, smooth rain crust.
The recent forecaster blog does a great job of capturing the challenging travel and decision-making we'll likely encounter in the backcountry right now. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":11,"length":15,"key":0}],"data":{}},{"key":"a37qj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1k2mc","text":"Slabs may be especially reactive where they sit on top of a crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LIN
New snow and wind could be forming fresh, reactive wind slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9338d","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5ftpo","text":"The recent forecaster blog does a great job of capturing the challenging travel and decision-making we'll likely encounter in the backcountry right now. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":11,"length":15,"key":0}],"data":{}},{"key":"7jduq","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"74in7","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"56vrd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c86nk","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LIN
The recent forecaster blog does a great job of capturing the challenging travel and decision-making we'll likely encounter in the backcountry right now. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":11,"length":15,"key":0}],"data":{}},{"key":"58duc","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"barr4","text":"Wind slabs are likely to be found near ridgelines and exposed terrain in the treeline and alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LIN
esterly winds and fresh snow continue to build wind slabs in the alpine and treeline. Approach ridge crest and wind loaded features with caution, variable wind directions may create reverse loading patterns. Slabs will be most reactive if they sit on a smooth crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":183,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"typ
A layer of weak facets (sugary snow) can be found down 50-100 cm near a crust layer that formed in early December. The persistent slab problem may be possible to human trigger. Avoid likely trigger spots such as steep, rocky slopes with a shallow or thin to thick snowpack.
ockets of wind slab still remain in the alpine and treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"33j1b","text":"Approach ridge crest and wind loaded features with caution, variable wind directions may create reverse loading patterns. These wind slabs will be most reactive to human triggering where they overlie a thick, smooth rain crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":96,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"typ
nderneath the new storm snow, there are lingering wind slabs on most aspects, due to recent, strong winds of varying direction. An avalanche that starts in the storm snow has the potential to step down to these wind slabs, that were most prominent at treeline and in the alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":193,"length":9,"key":0}],"data":{}},{"key":"e5pka","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9cc2b","text":"If you are unsure where the old wind slabs are lurking, then assume any storm slab avalanche has the potential to get bigger than expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK
New snow combined with strong southwest wind is expected to initiate a natural avalanche cycle that may involve layers buried deep in the snowpack. The storm is expected to produce 10 to 15 cm by day break and another 10 to 15 cm throughout the day Tuesday.
15-40 cm of new snow will continue to be redistributed by westerly winds, forming wind slabs in the alpine and treeline. These wind slabs may sit on top of a weak layer of facets or surface hoar, which will increase the reactivity of this problem, especially where a crust is present below.
40-100 cm of new snow has fallen in the past two days, with another 10-15 cm to come throughout the day today. This amount of new snow has put significant new load on the snowpack and although snowfall is tapering, the snowpack will need time to adjust to this new load.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dmbr1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f02ug","text":"In wind exposed areas, strong southwest winds have created deep deposits of wind slab. In sheltered areas, the new snow will acts as a storm slab or loose dry problem.
Up to 60cm of new snow will continue to be redistributed by strong westerly winds, creating fresh wind slabs in the alpine and treeline. Cold, clear temperatures prior to this storm may created a weak layer below the new snow, which could increase the likelihood of these avalanches occurring.
With plenty of soft, light snow available for wind transport, we expect to see wind slab formation in the alpine and open areas near treeline. A north or northwest wind  means atypical cross-loading and reverse loading patterns.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":185,"length":13,"key":0},{"offset":203,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/terms/cross-loading"}},"1":{"type":"LINK",
New snow and strong wind will form unstable wind slabs. These conditions will most likely be found on the leeward side of ridges, but pay close attention to the look and feel of the surface snow as slab formation could be more widespread.
Westerly winds will continue to redistribute new snow forming wind slabs in the alpine and treeline. These wind slabs may overlie a weak layer of facets or a thin rain crust below 1300m. These weak layers will increase both the reactivity and propagation potential of wind slabs, particularly when a crust is present below.
40-70 cm of new snow has formed a fresh storm slab problem across elevations and aspects that may remain reactive to human triggering. Strong south winds during the storm likely built larger, more sensitive slabs in wind-drifted areas at upper elevations.
Recent snow and wind have formed dense slabs in wind-exposed areas. These wind slabs may be reactive to human triggering, especially where the snow is not well bonded to a buried crust.
As winds pick up late Tuesday and mild temperatures promote settlement in recent snow at lower elevations, we expect to see accelerated slab formation. Storm slabs may be surprisingly reactive where they sit on a weak layer of surface hoar or a slippery crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":227,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type
A frontal system crossing the region will form unstable wind slabs. These conditions will most likely be found on the leeward side of ridges, but pay close attention to the look and feel of the surface snow as slab formation could be more widespread. If slabs develop they could be poorly bonded to the underlying crust.
New snow and wind are forming fresh slabs over a thin crust. Recent snow under this crust is well-settled and dense and may remain reactive where it sits over a weak layer of surface hoar on a thicker crust. You can dig down to investigate the bond at these interfaces.
Recent snow and wind may have formed shallow slabs in wind-exposed areas at upper elevations. These wind slabs may be reactive to human triggering, especially where the snow is not well bonded to a buried crust.
Recent snow and wind have formed dense slabs in wind-exposed areas at upper elevations. These wind slabs may be reactive to human triggering, especially where the snow is not well bonded to a buried crust.
A frontal system crossing the region will form unstable wind slabs on Wednesday. These conditions will most likely be found on the leeward side of ridges. The snow could be poorly bonded to the underlying crust.
Continued snowfall and strong northwest winds will create fresh wind slabs in the alpine and treeline. Cold, clear temperatures prior to this storm have created a weak layer below the new snow, which could increase the likelihood of these avalanches occurring.
A frontal system crossing the region will form unstable wind slabs on Wednesday. These conditions will most likely be found on the leeward side of ridges and could be poorly bonded to the underlying crust.
New snow and wind are forming fresh slabs. Where previous days' snow sits over a weak layer, slab avalanches could be larger than expected and run far on a slippery crust.
Southwest winds have redistribute this week's new snow into wind slabs in the alpine and treeline. These wind slabs may overlie a weak layer of facets or a thin rain crust below 1300m. These weak layers will increase both the reactivity and propagation potential of wind slabs, particularly when a crust is present below.
ecent snow and wind have built isolated slabs in wind-exposed areas which may be reactive to human triggering, especially where  the snow is not well bonded to a buried crust.
Southwest wind has formed the recent storm snow into wind slabs in the alpine and treeline.
Wind and freezing levels are forecast to ramp up Tuesday and it's unclear how this combination will play out in the recent snow. Generally, both have a destabilizing effect on fluffy new snow but in this case, the two might counteract each other to some extent. As snow warms and settles it becomes more difficult for the wind to pick it up and transport it. Given the modest accumulations of snow over the crust, only the deeper wind loaded deposits would be our main concern for triggering avalanches.  If you see snow blowing in the wind or fat looking pockets in lee terrain features, raise your guard.
Storm slabs will build over the day on all aspects at treeline and above. Expect the bond between new snow and the rain crust to be poor, investigate conditions before exposing yourself to avalanche terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eoa9a","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bv93u","text":"Strong winds and continued snowfall over the day will build deeper deposits in the alpine and treeline. Approach ridge crest and wind loaded features with caution, variable wind directions may create reverse loading patterns. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":200,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"typ
trong westerly winds and snow throughout the day will continue to build wind slabs in the alpine and treeline. Approach ridge crest and wind loaded features with caution, variable wind directions may create reverse loading patterns. These wind slabs will be most reactive to human triggering where they overlie a thick, smooth rain crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":208,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"typ
15-30 cm of new snow will be redistributed by westerly winds, forming new wind slabs in the alpine and treeline. These wind slabs will sit on top of a weak layer of facets or surface hoar, which will increase the reactivity of this problem, especially where a crust is present below.
New snow and wind will create wind slabs in the alpine and treeline. These wind slabs will overlie a weak layer of facets and in some areas surface hoar. These weak layers will increase both the reactivity and propagation potential of wind slabs, particularly when a crust is present below.
40-100 cm of new snow has fallen in the past three days accompanied by southwest wind which will continue to blow with enough gusto to form fresh slabs Sunday. Although snowfall is tapering, the snowpack will need time to adjust to this new load.
Recent weather has likely left unstable slabs at upper elevations, especially on the leeward side of ridges. Pay attention to the look and feel of the surface snow, as slab formation could also become more widespread.
20-50 cm of new snow created a fresh storm slab problem across elevations and aspects that may remain possible to human trigger. Strong south winds during the storm likely built larger, more reactive slabs in wind-drifted areas at upper elevations.
The region picked up 15 to 20 cm of new snow Tuesday with enough southerly wind to form fresh and potentially sensitive storm slabs that are going to be most problematic in north facing terrain where it has likely been formed into slabs.
nderneath the new storm snow, there are lingering pockets of wind slab on an icy crust. An avalanche that starts in the storm snow has the potential to step down to these wind slabs. These wind slabs were most prominent at treeline and in the alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":153,"length":9,"key":0}],"data":{}},{"key":"eagev","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8rb0i","text":"If you are unsure where the old wind slabs are lurking, then assume any storm slab avalanche that starts has the potential to get bigger than expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK
Recent storm snow remains suspect at all elevations, especially in northern parts of the region where there has been more snowfall. It's settling above a variety of crust and surface hoar layers which makes it difficult to pinpoint where it will remain reactive. At upper elevations, wind will likely keep slabs reactive on leeward features, especially along ridges.
aturday's storm brought 20-40cm of new snow to the region. Overnight northwest winds will continue to redistribute this new snow into wind slabs in the alpine and treeline. The northerly component to winds may create loading in areas that are not commonly loaded. Continued southwest wind throughout the day today will transport available snow into fresh, reactive wind slabs in the alpine and treeline.
Saturday's intense storm brought 50-70 cm of new snow. Overnight northwest winds will continue to redistribute this new snow into wind slabs in the alpine and treeline. The northerly component to winds may create loading in areas that are not commonly loaded. Continued southwest wind throughout the day today will transport available snow into fresh, reactive wind slabs in the alpine and treeline.
Shifting wind directions on Thursday may form fresh wind slabs reactive to human triggers on numerous aspects.
nderneath the new storm snow, there are lingering pockets of wind slab on an icy crust. An avalanche that starts in the storm snow has the potential to step down to these wind slabs, that were most prominent at treeline and in the alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":153,"length":9,"key":0}],"data":{}},{"key":"eagev","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8rb0i","text":"If you are unsure where the old wind slabs are lurking, then assume any storm slab avalanche that starts has the potential to get bigger than expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK
The wind is expected to be strong southwest Thursday night, but there isn't much snow available for transport. That being said, there might be some fresh wind slabs on north facing terrain Friday. Previous to this, winds were light all week.  Wind slabs formed last weekend are likely growing quite stubborn as they age in the frigid air. ","type":"unstyled","depth":0,"inlineStyle
torm snow and strong southwesterly winds have developed large storm slabs we expect to continue to be reactive troughout the day.
20-30 cm of new snow has formed a fresh storm slab problem across elevations and aspects that may remain reactive to human triggering. Areas in the south of the region received greater accumulations, ranging from 30-50 cm. Strong south winds during the storm likely built larger, more sensitive slabs in wind-drifted areas at upper elevations.
These wind slabs have been less reactive in the last few days, but could still be triggered if you hit the wrong spot. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":6,"length":10,"key":0}],"data":{}},{"key":"6mfc","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"daagh","text":"Watch out for fatter looking pockets or pillows of snow, especially right at ridge-crests, or places where the terrain rolls away from you.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"t
Saturday's storm brought 10-30cm of new snow to the region. Moderate northwest winds will continue to redistribute this new snow into wind slabs in the alpine and open treeline. The northerly component to the wind could create loading in areas that are usually windward, which may catch riders off guard.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6pu8m","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eodc1","text":"In the Whitewater area, surface hoar has been reported below the new snow. This will make slabs more widespread and increase the reactivity and propagation potential. Be suspicious of any areas treeline and below where a slab exists, especially in sheltered areas where this surface hoar may be preserved.
Fresh storm slabs formed on Saturday will remain reactive to human triggers through the weekend, especially in wind affected terrain.
Fresher wind slabs on westerly aspects will likely be more reactive than slabs formed earlier in the week. If you do trigger an older wind slab, it may produce a larger avalanche.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"11nhh","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b5oe3","text":"Given the shifting nature of the recent winds, wind slabs should be expected on all aspects in exposed terrain.
These wind slabs have been less reactive in the last few days, but could still be triggered if you hit the wrong spot. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":6,"length":10,"key":0}],"data":{}},{"key":"418i1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"avqpm","text":"Watch out for fatter looking pockets or pillows of snow, especially right at ridge-crests, or places where the terrain rolls away from you.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"t
30-45 cm + of recent snow will remain available for wind transport Tuesday, building reactive wind slabs on alpine features and open areas at treeline. Expect to see cross-loading on slopes that have not seen wind-affected snow during the previous storm.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":94,"length":10,"key":0},{"offset":166,"length":13,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avysavvy.avalanche.ca/en-ca/wind-slabs"}},"1":{"t
20-35 cm + of low-density snow will remain available for wind transport throughout the day Tuesday, building reactive wind slabs on alpine features and open areas at treeline. Expected developing wind slabs on slopes that have not seen wind-affected snow during the last storm.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":118,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type
Significant and rapid accumulations of snow accompanied with strong southwest winds are building a widespread reactive storm slab problem. The additional snow and strong wind forecast for Saturday could make this problem even more touchy, particularly in wind-exposed areas. Storm slab avalanches will likely be large and run far on the underlying crust. Stick to simple, low-angle slopes with no overhead hazard.
10-30 cm of new snow overnight will continue into the day. In wind exposed areas, this new snow will be redistributed by southwest winds into deep deposits of wind slab. In more sheltered areas, this storm snow will form a storm slab or loose dry problem, and be particularity reactive where it overlies a crust.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8blin","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3au8a","text":"There is still some concern for buried weak layers. Where slabs overlie a weak layer they will be more reactive to human triggered and have the potential to create larger avalanches. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e60ra","text":"
moist and crusty surfaces getting hit by sun on friday
A persistent slab problem associated with a crust buried 50-150 cm deep has produced a number of large and surprising avalanches recently. This problem is most likely to be triggered from thin or variable depth snowpack depth such as wind affected features, ridge crests, and near rocky outcroppings.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"82r77","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6lota","text":"As you make decisions about where to be and how to move through terrain, try to think in terms of consequences of the worst case scenario just in case you get surprised. \"If I trigger an avalanche from here, how big could it be? Am I in a spot where I could get caught in it? Will other people get caught in it?\"
here are a few layers of wind slab overlying the early December rain crust. Any avalanche that starts in these wind slabs has the potential to step down to another windslab, or right to the rain crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":144,"length":9,"key":0}],"data":{}},{"key":"bd613","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6or6s","text":"Moderate to strong southwest to southeast winds have formed the recent storm snow into slabs that are deeper and more reactive in leeward features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":130,"length":7,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#step-down-avalanche"}},"1":{
his week's 30cm of new snow will continue to be redistributed by northwest winds into fresh, reactive wind slabs in the alpine and treeline. Yesterday, southwest winds will have created wind slabs in lee features, which will likely be more stubborn to human triggering.
e alert to changing conditions. Winds are forecast to shift to the northwest and increase at upper elevations, which may form fresh wind slabs that are reactive to human triggering. Previous moderate to strong southwest to southeast winds built slabs in leeward terrain and may also remain possible to trigger.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":255,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{
Strong shifting winds will likely redistribute the recent storm snow and create reactive wind slabs on all open terrain. Expect cross-loading to develop throughout the day Tuesday. Human-triggered wind slabs are most likely during their formation. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":128,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"t
orecast snow and strong southwesterly winds on Sunday are expected to form fresh wind slabs on lee features at treeline and above.
resh wind slabs are likely to form at upper elevations as strong winds precede the next storm. Lingering reactivity may also be observed in older wind slabs on a variety of aspects.
We've received 50 cm in the last week, 17 cm in the last 24 hours, and another 10 to 20 cm of snow is expected today with strong southwest wind.  Storm slabs will be reactive Saturday.
New snow and wind on Saturday will form touchy storm slabs at all elevations, but will be especially reactive in wind affected terrain.
ith recent storm snow available and southwesterly winds picking up overnight and increasing during the day, natural avalanches will be possible on leeward terrain features on Tuesday. Human-triggered avalanches on these wind slabs will be likely, particularly near ridge-crests and roll-overs. Cornices may be reaching their breaking point and have the potential to act as triggers on slopes below.
t may be possible to trigger avalanches in the recent snow where it is getting drifted by wind at upper elevations.
Underneath the new storm snow, there are lingering wind slabs that were bonding poorly to the icy crust below. An avalanche that starts in the storm snow has the potential to step down to these wind slabs. These wind slabs were most prominent at treeline and in the alpine on northwest through south aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":175,"length":9,"key":0}],"data":{}},{"key":"3opao","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3ee5p","text":"If you are unsure where the old wind slabs are lurking, then assume any storm slab avalanche that starts has the potential to get bigger than expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9k09d","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7c8vp","text":"Expect storm slabs to be the deepest and most reactive in the Lizard Range. That area is expected to receive significantly more snow than the rest of the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK
There's little direct information today but there was some new snow available for wind transport yesterday and southerly winds strong enough to move it were reported, notably around Paddy Peak and Powder Valley. Overnight weather station info doesn't show much wind, but outflow (northeast) winds moving snow and creating small slabs were reported. So I'm guessing there will be a mixed bag of slightly larger older and newer but maybe smaller windslabs on most aspects and various elevations. As temperatures drop, I expect sensitivity to triggering will decrease but I'd still be pretty careful on Sunday as the transition to colder weather begins.
Underneath the storm snow, there are lingering wind slabs that were bonding poorly to the icy crust below. An avalanche that starts in the storm snow has the potential to step down to these wind slabs. These wind slabs were most prominent at treeline and in the alpine on northwest through south aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":171,"length":9,"key":0}],"data":{}},{"key":"3opao","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3ee5p","text":"If you are unsure where the old wind slabs are lurking, then assume any storm slab avalanche that starts has the potential to get bigger than expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9k09d","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7c8vp","text":"Expect storm slabs to be the deepest and most reactive in the Lizard Range. That area is expected to receive significantly more overnight snow than the rest of the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK
nderneath the storm snow, there are lingering wind slabs on most aspects, due to recent, strong winds of varying direction. An avalanche that starts in the storm snow has the potential to step down to these wind slabs, that were most prominent at treeline and in the alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":189,"length":9,"key":0}],"data":{}},{"key":"e5pka","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9cc2b","text":"If you are unsure where the old wind slabs are lurking, then assume any storm slab avalanche has the potential to get bigger than expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK
nderneath the storm snow, there are lingering pockets of wind slab on an icy crust. An avalanche that starts in the storm snow has the potential to step down to these wind slabs, that were most prominent at treeline and in the alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":149,"length":9,"key":0}],"data":{}},{"key":"eagev","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8rb0i","text":"If you are unsure where the old wind slabs are lurking, then assume any storm slab avalanche that starts has the potential to get bigger than expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK
New wind slab formation is expected on Thursday resulting from forecast strong SW-NW winds. Older wind slabs from the weekend may still be reactive, especially in steep, unsupported features. Given the shifting nature of the recent winds, wind slabs should be expected on all aspects in exposed terrain.
It may be possible to trigger avalanches in the recent snow where it is getting drifted into cohesive slabs at upper elevations.
New wind slab formation is expected on Thursday resulting from forecast strong winds from the NW. Older wind slabs from the strong outflow winds on Monday and Tuesday also remain a concern, especially on south and west aspects. Given the shifting nature of the recent winds, wind slabs should be expected on all aspects in exposed terrain.
his week, the region has seen 40 cm of new snow, which remains loose and unconsolidated in many areas. As the winds increase today and we receive another 10-20 cm of new snow there will be a lot of snow available for transport creating fresh, reactive wind slabs in the alpine and treeline. Expect wind slabs to be building throughout the day. Be observant of continually changing conditions.
trong southwest winds will continue to redistribute this week's 30 cm of snow, along with new snow throughout the day, into wind slabs in the alpine and treeline.
With recent storm snow available and southwesterly winds picking up overnight and increasing during the day, natural avalanches will be possible on leeward terrain features on Tuesday. Human-triggered avalanches on these wind slabs will be likely, particularly near ridge-crests and roll-overs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"858km","text":"
With recent storm snow available and southwesterly winds picking up overnight and increasing during the day, natural avalanches will be possible on leeward terrain features on Tuesday. Human-triggered avalanches on these wind slabs will be likely, particularly near ridge-crests and roll-overs. Cornices may be reaching their breaking point and have the potential to act as triggers on slopes below.
Given the shifting nature of the recent winds, wind slabs should be expected on all aspects in exposed terrain.
The incoming weather could build new wind slab on all aspects and elevations.
Today, fresh wind slabs on westerly aspects will likely be more reactive than slabs formed earlier in the week. If you do trigger an older wind slab, it may produce a larger avalanche.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"11nhh","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b5oe3","text":"Given the shifting nature of the recent winds, wind slabs should be expected on all aspects in exposed terrain.
The incoming weather may form wind slabs in exposed terrain.
New storm and wind slab will form as a result of the incoming weather. Sensitivity to triggering will be greatest where wind effect is evident.
25-60 cm of new snow is forecast to accumulate by Saturday afternoon, with higher totals expected in areas southwest in the region. The new snow will likely form a widespread, touchy storm slab problem across elevations and aspects. Winds are forecast to be strong to extreme from the southwest. Anticipate larger, more reactive slabs in wind-drifted areas.
New snow to come (15-25 cm) and hauling winds (up to 60 km/h) will rapidly create touchy wind slabs on alpine lee features and open areas at treeline. As wind slabs are more reactive to human triggers during their formation, seek out sheltered terrain where the snow has not been wind-affected. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":89,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTA
We're expecting southwest wind to increase in speed throughout the day Tuesday, which may breathe fresh life into the wind slab problem. If you're out and about, keep a close eye on how the wind is interacting with the old storm snow. If the snow is being actively formed into new wind slabs you'll need to avoid problem areas like convexities and wind loaded features near ridge crest.
Skier triggerable wind slabs have still been observed on wind loaded slopes in the treeline and alpine.
40-60 cm of recent storm snow is settling rapidly over colder, weaker snow and getting redistributed by strong winds into reactive slabs. These storm slabs will remain likely to trigger on Sunday, especially as new snow, wind, and warming temperatures increase their sensitivity to triggering. Expect this problem to be more pronounced in wind-drifted areas.
10 to potentially 20 cm of storm snow and extreme wind are expected to form fresh storm slabs Monday night into Tuesday and there is potential for a natural avalanche cycle.
Isolated wind slab can still be found in exposed treeline and alpine features.
Storm snow and strong southwesterly winds have developed large storm slabs we expect to continue to be reactive troughout the day.
Use extra caution on \"thick to thin\" areas and steep roll overs. Sensitivity to triggering will be greatest where wind slab overlies this layer.
Storm slabs are expected to form on Monday with new snowfall and strong SW wind. These slabs will overlie a weak snow surface and may become touchy right away, especially in wind loaded areas.
Alpine wind slabs may be further down the slope than normal and very hard. Cold temperatures can make it possible to trigger them for longer. At and below 1300m these may be sitting on buried surface hoar which could result in larger than expected avalanches.
Storm slabs will build with continued snowfall over the day. Strong south/southwest winds will create deeper deposits in wind loaded features, use caution approaching ridge crest and cross loaded features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6m94g","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4vccb","text":"Reactive slabs are expected as new snow falls over weak crystals and wind effected surfaces. Larger avalanches could be triggered in the treeline where wind slab has formed over surface hoar.
New wind slab has formed from Southwest winds. As the wind shifts to the Northwest unusual wind loading could take place.
Wind slab can still be found in exposed terrain in treeline and above. Sensitivity to triggering will be greatest where wind slab overlies the early December facet/crust combo.
30-45 cm + of recent snow will be available for wind transport Monday. Northwest circulation will also bring cold temperatures and different wind patterns. Touchy wind slabs will build throughout the day on alpine features and open areas at treeline on slopes that have not seen developing slabs during the previous storm.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":163,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type
Given the shifting nature of the recent winds, wind slabs should be expected on all aspects in exposed terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"309m0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3g989","text":"5-15 cm of new snow that fell overnight on Wednesday has given the winds a new feed of snow for slab formation.
20-35 cm + of low-density snow will be available for wind transport Monday. Northwest circulation will also bring cold temperatures and different wind patterns. Touchy wind slabs will build throughout the day on alpine slopes that have not seen wind slabs during the previous storm.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":168,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type
eactive storm slabs will build through the day with new storm snow and strong southwest wind, especially in the southern part of the region that receives higher snowfall amounts. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bmkst","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4672m","text":"
aturday's 10-30cm of new snow has been redistributed by southwest winds into wind slabs in the alpine and treeline. As the winds pick up today, the new snow that remains loose and unconsolidated will be redistributed into fresh, reactive wind slabs in the alpine and treeline.
Danger will increase throughout the day as snowfall and southwest winds build fresh, reactive wind slabs in lee areas in the alpine and treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2398c","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"64kfs","text":"Older, hard wind slabs exists below the new snow from easterly outflow winds earlier in the week. These slabs will likely be quite stiff and stubborn to triggering but would be larger and more consequential if triggered.
Saturday's storm brought 10-30cm of new snow to the region. Moderate southwest winds redistributed this new snow into wind slabs in the alpine and treeline. If the winds do pick up today, there is a lot of snow available for transport, and will create fresh, reactive wind slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9m5id","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eodc1","text":"In the Whitewater area, surface hoar has been reported below the new snow. This will make slabs more widespread and increase the reactivity and propagation potential. Be suspicious of any areas treeline and below where a slab exists, especially in sheltered areas where this surface hoar may be preserved.
n wind-drifted areas, wind slabs in the alpine and treeline may remain reactive to human triggering. If the winds pick up today, there is a lot of snow available for transport which will create fresh, reactive wind slabs.
Continued precipitations will impact the region, intensifying Thursday morning. Expect reactive storm slabs to develop at all aspects / elevations, especially behind lee features. These slabs will be easily triggered by riders, especially in wind-affected areas. Increased snowfalls are most likely in the south-east part of the region, near Kokanee Park.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":96,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTA
Saturday's intense storm brought 50-70 cm of new snow. In wind loaded areas, human triggering will still remain a concern. If the wind picks up today, there is a lot of snow available for transport and it will form fresh, reactive wind slabs.
trong southwest winds during the recent storm drifted the new snow into dense slabs on leeward terrain features. These wind slabs may remain possible to human trigger, particularly near ridge-crests and roll-overs. Cornices may be reaching their breaking point and have the potential to act as triggers on slopes below.
Sustained southwest winds have a sufficient supply of snow to continue to drift into wind slabs on lee slopes at upper elevations. These wind slabs will likely be reactive to human triggering.
Strong southeast winds during the recent storm drifted the new snow into dense slabs on leeward terrain features. These wind slabs may remain possible to human trigger, particularly near ridge-crests and roll-overs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"858km","text":"
Strong southwest winds during the recent storm drifted the new snow into dense slabs on leeward terrain features. These wind slabs may remain possible to human trigger, particularly near ridge-crests and roll-overs. Cornices may be reaching their breaking point and have the potential to act as triggers on slopes below.
Continued precipitations will impact the region, intensifying Thursday morning. Expect reactive storm slabs to develop at all aspects / elevations, especially behind lee features. These slabs will be easily triggered by riders, especially in wind-affected areas. Increased snowfalls are expected in the west part of the region (35 cm +) with this strong southwesterly flow. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":96,"length":11,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTA
Rider triggerable wind slab can still be found in specific areas.
By Thursday morning, snow storm (25-40 cm) will have created touchy storm slabs at all elevations, especially behind lee features. These soft slabs will be easily triggered by riders, especially in wind-affected areas. The strong southwesterly flow associated with the storm means lots of heavy snow in the favoured slopes such as the south east part of the region.
Reactive storm slabs will build with warmer temperatures, new snow, and wind loading.
We've got 10 to 25 cm coming in Tuesday night and another 10 to 20 cm expected Wednesday, all of it is set to arrive with strong to extreme wind out of the southwest. Here's where it gets sporty, we've got a widespread surface hoar layer in place right now, and it's plausible that in some locations all of this storm snow will come to rest on this persistent weak layer.  This would allow the new storm slabs to be pretty sensitive to human triggering Tuesday, and may even allow for some natural avalanches.
eactive storm slabs will build through the day with new snow and strong southwest wind. Leeward wind-loaded slopes may host thicker and stiffer slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bmkst","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4672m","text":"
Wind slab can still be found in exposed terrain. Sensitivity to triggering will be greatest where wind slab has formed over surface hoar.
eactive storm slabs will build with warmer temperatures, new snow, and wind loading. Leeward wind-loaded slopes may host thicker and stiffer slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5sdh0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3dui0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6d1t5","text":"
Recent storm snow along with strong winds have formed a widespread storm slab at higher elevations. While the thickness and reactivity of this slab likely varies throughout the region, it is expected to be most reactive in wind exposed terrain.
Storm slabs will be most reactive where deeper deposits have been wind loaded into lee aspects. Avoid these areas until they have a chance to stabilize. Recent snow rests on a weak layer which means that reactivity may persist for longer than usual after the storm.
Forecast snow and wind are expected to form fresh storm slabs reactive to human triggers on Wednesday.
his layer is becoming more deeply buried and somewhat harder to trigger. But it would likely result in a large avalanche if you tickle it from the wrong spot. Most likely trigger points are areas where the snowpack is shallow or variable so avoid fat to thin transitions and stick to places where the snowpack is deep. Remote triggering is possible and a cornice fall or surface avalanche could set off a deeper slide so be aware of your overhead exposure.
ith continuing snow in the forecast, sustained southwest winds will have an ongoing supply of fresh snow to drift into wind slabs on lee slopes at upper elevations. These wind slabs will likely be reactive to human triggering.
ecent moderate to strong southwesterly winds have formed the recent storm snow into slabs that are deeper and more reactive in leeward features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":128,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{
An avalanche that starts in the storm snow has the potential to step down to the Late November/Early December rain crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":64,"length":9,"key":0}],"data":{}},{"key":"2qjnn","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cd648","text":"This crust is widespread across the province, and many operations have been watching it for signs of reactivity as the load on top of it increases. It may also get more reactive as cold temperatures promote faceting above the crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":207,"length":24,"key":1}],"data":{}},{"key":"3opao","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bf79p","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#step-down-avalanche"}},"1":{"type":"LI
This layer was very reactive yesterday in one location, but the crust is widespread across the province, and many operations have been watching it for signs of reactivity as the load on top of it increases. It may also get more reactive as cold temperatures promote faceting above the crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":266,"length":24,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LI
Small inputs of new snow will continue to feed wind slabs. As wind direction shifts southeast on Monday, watch for changes in loading patterns.
New wind slab formation is expected on Monday as the wind switches direction and blows from the northeast. Reactive wind slabs should be expected on all aspects in exposed terrain.
Reactive wind slabs formed over the weekend primarily on north and east aspects as a result of strong SW winds. On Monday, the wind is expected to switch directions and new wind slab formation is expected primarily on south and west aspects. As a result, reactive wind slabs should be expected on all aspects in wind exposed terrain.
Small inputs of new snow will continue to feed wind slabs. As wind direction shifts southeast on Monday, watch for changes in loading patterns. Treat wind affected areas below treeline with caution.
trong southwest winds and recent snow have formed wind slabs in lee terrain features at upper elevations that may remain possible to trigger. With winds shifting to the southeast, there is potential for fresh reactive slabs to build in a cross-loaded pattern on Monday.
Strong southwest winds and recent snow have formed wind slabs in lee terrain features at upper elevations that may remain possible to trigger. With winds shifting to the southeast, there is potential for fresh slabs to build in a cross-loaded pattern.
Strong southwest winds and recent snow have formed wind slabs in lee terrain features at upper elevations that may remain possible to trigger. With winds shifting to the southeast, there is potential for fresh reactive slabs to build in a cross-loaded pattern on Monday.
Wind loading has been reported at low elevations in the trees. Watch for signs of instability in drifted snow. As wind direction shifts southeast on Monday, watch for changes in loading patterns.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d3rpq","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2c1a3","text":"Below treeline, recent snow may remain reactive longer than normal where it sits on a weak layer over a crust. You can dig down to investigate the bond between the thick crust and overlying snow.
Wind slabs on south facing aspects are the most likely to be remain sensitive to human triggering Monday. Moderate to strong wind out of the west/northwest began to pickup Saturday night and continued into Sunday.  The cold temperatures will likely dampen their sensitivity, but you're probably not going to find riding conditions to be very good in wind exposed terrain.
Storm slabs could be reactive to human triggering on Friday, especially on leeward (wind-loaded) slopes that host thicker and stiffer slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"58a92","text":"Loose-dry sluffing will likely exist on steeper wind-sheltered slopes and terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fqn3v","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"djrel","text":"
At the moment, there may be a temptation to ride in areas where the snow has been deposited by the wind. Be aware that in these areas wind slabs could remain reactive longer than usual due to the extremely cold temperatures. Keep in mind that firm slabs can be triggered farther down slope than you might expect. Don't get surprised! As you transition from sheltered areas into wind affected areas, pay attention to ski and track penetration and consider backing off if you encounter firm drum-like slabs or cracking.
Reactive storm slabs will build with warmer temperatures, new snow, and wind loading. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6pu8m","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eodc1","text":"Surface hoar has been reported below the new snow. This will make slabs more widespread and increase the reactivity and propagation potential. Be suspicious of any areas treeline and below where a slab exists, especially in sheltered areas where this surface hoar may be preserved.
Strong southwest winds during the recent storm drifted the new snow into dense slabs on leeward terrain features. These wind slabs may remain possible to human trigger, particularly near ridge-crests and roll-overs.
Southwest of Pincher Creek, avalanche control has produced explosive and skier triggered avalanches on this layer.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"61gk8","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7660p","text":"This crust is widespread across the province, and many operations have been watching it for signs of reactivity as the load on top of it increases.  It may also get more reactive as cold temperatures promote faceting above the crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":208,"length":24,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LI
oderate to strong southwest to southeast winds have formed the recent storm snow into slabs that are deeper and more reactive in leeward features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":130,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{
New wind slabs are expected to form on south to east aspects over the course of Wednesday. Lingering wind slabs may still exist on northerly aspects, meaning you could trigger a slab on all aspects.
New wind slab formation is expected on Monday as the wind switches direction. Winds slabs should be expected on all aspects in exposed terrain.
his layer is deeply buried and there has been very little activity on it since December 1st.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ehi41","text":"Most likely trigger points are areas where the snowpack goes from thin to thick, such as rock outcroppings. A large trigger like a cornice fall or avalanche in motion could potentially activate this deep persistent slab.
Old wind slabs may be lingering on north and east aspects from the weekend storm. New wind slab formation is expected on Monday night, primarily on south and west aspects resulting from NE winds.
Wind slabs are expected to be most reactive on south and west aspects as a result of the strong NE winds on Monday. However, north and east aspects also likely still have some reactive wind slabs from the storm on the weekend. As a result, wind slabs should be expected on all aspects in exposed terrain.
Wind slabs are expected to be most reactive on south and west aspects as a result of the strong outflow winds on Monday. However, north and east aspects also likely still have some reactive wind slabs from the storm on the weekend. As a result, wind slabs should be expected on all aspects in exposed terrain.
ew snow and shifting winds continue to form fresh wind slabs that are possible to human trigger. Pay attention to changing conditions with elevation/aspect and avoid slopes that have been freshly wind-loaded.
Forecast snow and shifting northeasterly winds Monday night may form fresh wind slabs on all aspects. Beware of wind slabs on non-typical aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7sqje","text":"
Forecast 15-25 cm of snow and strong southeasterly winds overnight Monday are expected to form fresh storm slabs reactive to human triggers, especially in wind-affected terrain.
Strong southerly winds and recent snow have formed wind slabs in lee terrain features at upper elevations that may remain possible to human trigger. Shifting winds overnight on Monday may form fresh wind slabs that are more sensitive to triggering.
The recent snow may become more reactive to human triggers as it settles into a more cohesive slab.  Look for signs of instability: whumpfing, hollow sounds, shooting cracks, and recent avalanches.
Winds have been light and variable since Monday, and any wind slabs formed previous to that are likely growing quite stubborn as they age in the frigid air. We don't think there is much snow available to be formed into fresh wind slabs, but recent observations are slim.
Wednesday's storm brought 15-20 cm of new snow and strong southwest winds to the mountains as the freezing level climbed to 1500 m. Where weak surface hoar at the interface was preserved by cold temperatures and where the new snow is deep or drifted, we expect that storm slab avalanches will remain sensitive to human triggering.
Storm slabs are expected to remain very reactive to human triggering on Tuesday, especially in wind loaded terrain. These slabs overlie a weak interface and may remain touchy for an extended period.
Wind slabs on south facing aspects are the most likely to remain sensitive to human triggering Wednesday, but they are likely getting harder and harder to trigger as time and frigid temperatures sap them of their energy.
New wind slabs will likely form throughout the day on Saturday. Due to strong winds these slabs might be found lower down on the slope then expected. New slabs will likely be limited in size but easy to trigger due to the fact that they will form over faceted and wind effected surfaces. Larger avalanches could be triggered in the treeline where wind slab has formed over surface hoar.
Winds will shift Monday night from the Southeast to the Southwest and then to the West on tuesday afternoon. Windslab could form on all aspects.
An avalanche that starts in the storm snow has the potential to step down to the Late November/Early December rain crust described in the Persistent Slab problem below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":64,"length":9,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK
New wind slabs will form throughout the day on Saturday. These new slabs will likely be limited in size but sensitive to rider traffic due to the fact that they will form over faceted and wind effected surfaces. Strong winds mean that these slabs could be found further down slope then expected. Sensitivity to triggering will be greatest where wind slab has formed over Surface hoar in the treeline and below.
layer of weak facets (sugary snow) can be found down 60-100 cm near a crust layer that formed in early December. The persistent slab problem has demonstrated recent instability, and it may be possible to human trigger.
Old wind slabs may be lingering on north and east aspects from the weekend storm. The wind recently shifted to a NE direction and new wind slab formation is expected, primarily on south and west aspects. As a result, wind slabs should be expected on all aspects in exposed terrain.
Wind slabs are expected to be most reactive on south and west aspects as a result of the strong outflow winds on Monday. However, old wind slabs from the weekend may still be reactive on north and east aspects. As a result, wind slabs should be expected on all aspects in exposed terrain.
Wind slabs on south facing aspects are the most likely to remain sensitive to human triggering Wednesday, but they are likely getting harder to trigger as time and frigid temperatures sap them of their energy.
25-40cm of snow has fallen this week at lower elevations and in sheltered terrain. As you gain elevation and move into wind effected terrain, expect to find deeper deposits. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c84ru","text":"These soft slabs will be easily triggered by riders, especially in loaded features lee to the southwest.
eactive storm slabs continue to linger, especially where they sit above a surface hoar interface. Leeward wind-loaded slopes may host thicker and stiffer slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2vcqj","text":"Loose-dry sluffing will likely exist on steeper wind-sheltered slopes and terrain features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2etsf","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bmkst","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4672m","text":"
40-80 cm of new snow is forecast to accumulate by Saturday afternoon. The new snow will likely form a widespread, touchy storm slab problem across elevations and aspects. Winds are forecast to be extreme from the southwest. Anticipate larger, more reactive slabs in wind-drifted areas.
Storm slabs will remain reactive to a riders weight as they begin to gain strength. Take care when moving through wind affected terrain and higher elevations - storm snow has been redistributed by southwest winds into deeper slabs in wind loaded features. Expect slabs to keep building as winds continue to transport snow into lee sheltered features.
Storm slabs could be reactive to human triggering on Friday, especially on leeward (wind-loaded) slopes that host thicker and stiffer slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eodc1","text":"Surface hoar has been reported below the new snow. This could make slabs more widespread and increase the reactivity and propagation potential.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ff1n","text":"Loose-dry sluffing will likely exist on steeper wind-sheltered slopes and terrain features.
Widespread and reactive storm slabs are likely with new snow and strong southwest wind.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4kj4j","text":"
0-60 cm of new snow is forecast to accumulate by Saturday afternoon. The new snow will likely form a widespread, touchy storm slab problem across elevations and aspects. Winds are forecast to be extreme from the southwest. Anticipate larger, more reactive slabs in wind-drifted areas.
Storm slabs are most likely to remain reactive at upper elevations where the recent snow has been wind loaded over a weak layer of preserved surface hoar or where it sits over a freezing rain crust below 1500 m.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":141,"length":12,"key":0}],"data":{}}],"entityMap":{"0":{"type
Storm snow and strong southerly winds have developed large storm slabs that may still be reactive to riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"q9km","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"20jhu","text":"These slabs may become less reactive as they settle after the storm, and as temperatures get colder, but give them some time to bond to the rest of the snowpack.
Another 30cm of low density snow fell in the Renshaw area on Wednesday, wind slabs will be most reactive in this area. Wind direction has varied throughout the region over the past few days so wind slab could be found on all aspects and elevations.
Use extra caution on South aspects where solar input will increase cohesion in the slab above this layer. We are reaching a tipping point where reactivity on this layer will increase.
Wind slab can be found on all aspects. Many west facing slopes are scoured but cross loaded features could be found.
Wind slab could still be found in exposed terrain.
Avalanche danger will increase throughout the day as snowfall and southwest winds build fresh, reactive wind slabs in lee areas in the alpine and treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2i0id","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ai1su","text":"Older, hard windslabs exists below the new snow from northeasterly outflow winds earlier in the week. These slabs may be quite stubborn to trigger, but would be larger and more consequential.
Recent winds have created wind slabs on a variety of aspects and created a lot of variability in the upper snowpack. Recent wind slab formation has been reported at all elevations, including open areas below treeline.
Shifting wind directions on Thursday may form fresh wind slabs on numerous aspects.
15-35 cm of new snow is forecast to accumulate by Saturday afternoon. The new snow will likely form a widespread, touchy storm slab problem across elevations and aspects. Winds are forecast to be strong from the southwest. Anticipate larger, more reactive slabs in wind-drifted areas.
Reactive storm slabs will build through the day with new storm snow and strong southwest wind.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6pu8m","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eodc1","text":"In the Whitewater area, surface hoar has been reported below the new snow. This will make slabs more widespread and increase the reactivity and propagation potential. Be suspicious of any areas treeline and below where a slab exists, especially in sheltered areas where this surface hoar may be preserved.
Given that recent winds have varied in direction, wind slabs may be found on multiple aspects. Winds are forecast to shift back to southwest and increase in strength on Friday. Pay attention to these changing conditions, as they may form fresh wind slabs that are reactive to human triggers.
10cm of new snow is being formed into windslabs by ongoing north winds. At and below 1300m these may be sitting on buried surface hoar which could result in larger than expected avalanches.
The South of the forecast region will likely experience a natural storm cycle Wednesday evening and Thursday morning. avoid avalanche terrain in the Renshaw and other areas that receive more then 25cm of new snow overnight. The North of the forecast region will likely still have rider triggerable wind slab in the treeline and above.
Moderate to strong south through southwest winds have developed large storm slabs that may still be reactive to riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c7pn0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ft3er","text":"These slabs may become less reactive as they settle after the storm, and as temperatures get colder, but give them some time to bond to the rest of the snowpack.
Strong wind and a bit of new snow on Wednesday night may form new wind slabs in exposed terrain features. These slabs may be touchy to riders and could take some time to bond to the snowpack.
eactive storm slabs will likely build through the day with new storm snow and strong southwest wind.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"56dff","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"caldp","text":"In exposed areas, strong to extreme winds have stripped many areas back down to the early December curst and create deposits of hard wind slab in lees. This wind loading may be lower down on slopes than you may expect as a result of the high wind values.
layer of weak facets (sugary snow) can be found down 100-180 cm near a crust layer that formed in early December. As the snow consolidates over this weak layer, the likelihood of human-triggering large, destructive avalanches is increasing. Multiple recent reports of large remote-triggered avalanches on this layer warrant vigilant, conservative terrain margins.
Wind slab can be found on all aspects. Most west facing terrain is scoured but  wind slab could still be found on cross loaded features.
The new storm snow will likely have a poor bond to the underlying old snow surfaces. Storm slabs will be reactive, especially on leeward slopes where deeper, and stiffer slabs exist due to wind loading.
New wind slab formation is expected on Thursday resulting from forecast strong NW winds. Any areas which had outflow winds on Monday and Tuesday may have reactive wind slabs and stubborn older wind slabs from the weekend may still be lingering. Given the shifting nature of the recent winds, wind slabs should be expected on all aspects in exposed terrain.
Shifting wind directions on Thursday may form fresh wind slabs on multiple aspects.
esterday's strong to extreme southwest winds will have redistributed the new snow into wind slabs in the alpine and treeline. Expect loading to be lower down in features than you might usually expect from the high wind values.
n the past 24 hours we have received 20-50cm of new snow. This will have created reactive storm slabs in the alpine and treeline. Anticipate larger, more reactive slabs in wind-drifted areas.
New wind slab formation is expected on Thursday as a result of the forecast strong winds from the NW. Reactive wind slabs from the strong outflow winds on Monday and Tuesday also remain a concern, especially on south and west aspects. Given the shifting nature of the recent winds, wind slabs should be expected on all aspects in exposed terrain.
A layer of weak facets (sugary snow) can be found down 50-100 cm near a crust layer that formed in early December. As the snow consolidates over this weak layer, the likelihood of human-triggering large, destructive avalanches is increasing. Multiple recent reports of large remote-triggered avalanches on this layer in the north of the region warrant vigilant, conservative terrain margins.
20-50 cm of new snow has fallen since Friday evening. The new snow will likely form a reactive storm slab problem in the alpine and treeline. Anticipate larger, more reactive slabs in wind-drifted areas.
Wind slab can be found on all aspects. Sensitivity to triggering will be greatest where wind slab has formed over the December 18th surface hoar/facet combo in the treeline.
Southwesterly winds in the storm created deeper and more reactive pockets in leeward features.
Wind slab can be found on all aspects. Sensitivity to triggering will be greatest where wind slab has formed over the December 18th surface hoar/facet combo in the treeline. Wind slab could have formed in cross loaded features from outflow winds at lower elevations.
In the north of the region, a layer of weak facets (sugary snow) can be found down 50-70 cm near a crust that formed in early December. In the neighboring Sea to Sky region, this layer has demonstrated recent instability, and it may be possible to trigger.
The recent wind and new snow will likely build new wind slab on Southerly aspects. This is in addition to old wind slab on all aspects that could still be rider triggerable near ridge crests and cross loaded features. Avalanche hazard will be greatest near Renshaw where the most snowfall is forecasted.
New wind slab is likely to develop on North and East aspects in the treeline and above. Old wind slab could still exist in cross loaded features on westerly aspects
In many areas this week's 40-50cm of new snow will remain loose and unconsolidated. This will create a dry loose problem on steep slopes on all aspects and all elevations. Although these avalanches will be relatively small, good sluff management, consideration of terrain traps, and overhead hazard analysis will be important.
aturday's storm brought 10-30 cm of new snow. Overnight northwest winds will continue to redistribute this new snow into wind slabs in the alpine and treeline. The northerly component to winds may create loading in areas that are not commonly loaded. In exposed areas, strong to extreme winds will strip many areas back down to the early December curst and create deposits of hard wind slab in lees. This wind loading may be lower down on slopes than you may expect as a result of the high wind values.
ecent winds have created wind slabs on a variety of aspects and created a lot of variability in the upper snowpack.
Wind slab has been observed on North and east aspects on Monday. We suspect wind slab can also be found on Westerly aspects after recent Southeast winds.
Storm slabs will build with continued snowfall over the day. Sustained strong south/southwest winds will create deeper deposits in wind loaded features further downslope than you may expect. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dl8ff","text":"Reactive slabs are expected as new snow falls over weak crystals and wind effected surfaces. Larger avalanches could be triggered in the treeline where wind slab has formed over surface hoar.
Over 60 cm of new snow in the pine pass area has formed reactive storm slabs; especially in wind affected terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b1v75","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7cn3i","text":"Much of the rest of the region received 10-20 cm of snow and strong southwesterly winds which formed reactive wind slabs on lee features at treeline and above.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c2rt1","text":"
Expect avalanche danger to increase throughout the day as snowfall and southwest winds build fresh, reactive wind slabs in lee areas in the alpine and treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1481m","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b2j1r","text":"Older, hard windslabs exists below the new snow from northeasterly outflow winds earlier in the week. These slabs exists at all elevations and may be quite stubborn to trigger, but would be larger and more consequential.
Westerly winds could create new wind slabs on east aspects. These new slabs will form over wind effected and faceted surfaces and likely won't bond well. These slabs could be touchy but limited in size. Strong winds could mean that wind slab is found lower down the slope then expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8hbfr","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4gjeg","text":"Old wind slab can still be found on west aspects.
Wind slabs will continue to build with light snowfall and winds over the day on north and east aspects. Strong south/southwest winds will create deeper deposits in wind loaded features, use caution approaching ridge crest and cross loaded features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fjd1a","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bh0bm","text":"Reactive slabs are expected as new snow falls over weak crystals and wind effected surfaces. Larger avalanches could be triggered in the treeline where wind slab has formed over surface hoar.
Northerly outflow winds today may create wind slabs in unusual cross-loading and reverse-loading patterns. This atypical spacial distribution could surprise riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":63,"length":13,"key":0},{"offset":81,"length":15,"key":1}],"data":{}},{"key":"9amid","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8f7us","text":"On Wednesday night, a dusting of new accompanied by westerly winds formed small but reactive wind slabs in the alpine and treeline. Rider triggering of these slabs remains possible.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
A large storm impacting the region may bring upwards of 80 cm of new snow by the end of the day. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fs1a0","text":"The associated strong to extreme winds will build deep deposits of slab in wind exposed areas. In sheltered areas, this new snow is falling on a weak layer of near surface facets. It will bond poorly to the underlying surface and create a touchy loose dry or storm slab problem. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":172,"length":6,"key":0}],"data":{}},{"key":"45o7h","text":"Two layers of surface hoar have been reported within the upper snowpack in protected areas at treeline and below; one is down 40-60 cm  (Dec 21) and the other is down 60-100 cm (Dec 18). They have not produced any avalanche or snowpack test results and their distribution seems fairly isolated,  but we would be avoiding steep, convex or open slopes in sheltered areas at treeline and below where these layers may be still be preserved and would be ripe for human triggering.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":14,"length":12,"key":1},{"offset":328,"length":6,"key":2}],"data":{}},{"key":"eus2k","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"597sd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"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
ew slab formation is expected on Monday with the incoming storm system. These new slabs may overlie a weak surface and could become touchy very quickly. In the south of the region, the slabs will be more widespread like a storm slab problem. In the north and east, the slabs will be in more specific wind loaded terrain like a wind slab problem.
ew wind slab formation is expected on Monday with the incoming storm system. These new slabs may overlie a weak surface and could become touchy very quickly.
A significant storm will bring upwards of 30 cm of new snow to areas west of Smithers by the end of the day, with closer to 10-20 cm the east. The accompanying strong to extreme winds will build wind slabs in wind exposed areas in the alpine and treeline. In areas that receive higher snowfall amounts, a touchy storm slab or loose dry problem will run easily on the weak bed surface of old hard wind slabs and near surface faceting.
Forecast westerly wind Wednesday night may form fresh wind slabs reactive to human triggers.  Look for signs of instability: whumpfing, hollow sounds, shooting cracks, and recent avalanches.
Wind slabs have formed from recent snow and strong southerly wind. Expect to find them in steep, lee terrain features near ridges.
Forecast strong westerly winds Wednesday night are expected to form fresh wind slabs on lee features at treeline and above.
orecast strong westerly winds Wednesday night are expected to form fresh wind slabs on lee features at treeline and above.
Northerly outflow winds today may create wind slabs in unusual cross-loading and reverse-loading patterns. This atypical spacial distribution could surprise riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":63,"length":13,"key":0},{"offset":81,"length":15,"key":1}],"data":{}},{"key":"aamr3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2vdqc","text":"On Wednesday night, westerly winds have redistributed available snow and into small pockets of wind slabs in the alpine and treeline with remain possible to be triggered by riders. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
New snow and wind are forming fresh, reactive storm slabs. New and recent snow may overlie a weak interface which could result in deeper and touchier than expected storm slabs.
orecast moderate westerly winds Wednesday night are expected to form fresh wind slabs on lee features at treeline and above.
Wind slabs that formed from recent southeast to southwest wind may remain triggerable to human activity. Use caution in steep, lee terrain features near ridges.
Recently formed wind slabs may remain reactive to human traffic on Saturday. The slabs formed from strong southeast to southwest wind. Use particular caution when entering lee terrain features near ridges.  Storm slabs may also be found in sheltered terrain, particularly around Manning Park where the most snow has recently accumulated.
Exposed slopes at higher elevations may harbour wind slabs that could be reactive in exposed areas.
ingering wind slabs may remain reactive to human triggers on lee features at treeline and above.
trong westerly winds have created fresh wind slabs on lee features at treeline and above.
Storm snow totals have exceeded 100 cm since the weekend, with more snow forecast into Tuesday. Touchy storm slabs in sheltered areas and wind slabs in exposed areas have formed. These slabs may take some time to stabilize, as the sit on a weak snow surface formed during the cold spell.
Touchy storm and wind slabs have formed from the recent 30 to 60 cm of snow. Wind slabs are likely found in wind-affected terrain from strong southerly wind and storm slabs are found in terrain sheltered from the wind. These slabs will likely remain touchy, as they sit on weak snow or hard surfaces.
New storm slabs and wind slabs likely formed above around 1200 m on Thursday night, as 60 cm of snow accumulated with strong southerly wind. Storm slabs are most likely found in terrain sheltered from the wind. Wind slabs may be present near the mountain tops in steep, lee terrain features.
Lingering wind slabs may remain reactive to human triggers on lee features at treeline and above.
torm slabs are expected to remain very reactive to human triggering on Tuesday, especially in wind loaded terrain. These slabs overlie a weak interface and may remain touchy for an extended period.
A persistent slab problem formed by a crust down 50-150 cm has created a low likelihood, high consequence scenario that is difficult to forecast. This layer is most likely to be triggered in windy areas where the depth of the snowpack is highly variable.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9ueb3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ebif7","text":"Avoid likely trigger spots such as steep, rocky or convex slopes with a shallow or thin to thick snowpack. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"btkgf","text":"
Southwest winds and new snow will increase hazard throughout the day building small but reactive wind slabs in the alpine and treeline.
resh wind slabs are likely to form at upper elevations as the wind picks up this weekend. Lingering reactivity may also be observed in older wind slabs on a variety of aspects.
Continued snow and moderate to strong south through southwest winds are building storm slabs that may be reactive to riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c7pn0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ft3er","text":"These slabs may become less reactive as they settle after the storm, and as temperatures get colder, but give them some time to bond to the rest of the snowpack.
Easterly winds have likely formed wind slab on west aspects and cross loaded others. Sensitivity to triggering will be greatest near ridge crests, especially in the southern part of the region where more snow was available for transport.
trong to extreme winds primarily from the South combined with the recent storm snow has likely formed stiff and reactive wind slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7blkb","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5sdh0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3dui0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6d1t5","text":"
Wind slab can be found on all aspects. Forecasted easterly winds will likely build new and more reactive wind slabs on west aspects.
Storm snow has been redistributed by southwest winds into deeper, reactive slabs in wind loaded features. Take care when moving through wind affected terrain and higher elevations. Expect fresh slabs to keep building over the day as moderate winds continue.
Easterly winds have likely formed wind slab on west aspects and cross loaded some features on north and south. Sensitivity to triggering will be greatest near ridge crests.
Recent winds have been north and easterly, be mindful of reverse loaded features. Watch your sluff, loose-dry snow may easily initiate in steep terrain.
torm snow and strong southwesterly winds have developed large storm slabs that may still be reactive to riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1mnd8","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6mehv","text":"These slabs may become less reactive as they settle after the storm, and as temperatures get colder, but give them some time to bond to the rest of the snowpack.
Expect deeper deposits and reactivity as you move into wind effected terrain. Avoid ridge crests and cross loaded features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5m0lk","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"88kjl","text":"Previous southerly winds will have loaded north facing slopes, however as winds switch to the northeast expect loading on all aspects as reverse loading may occur. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":104,"length":29,"style":"BOLD"}],"entityRanges":[{"offset":137,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
Take care when moving through wind affected terrain and higher elevations - storm snow has been redistributed by southwest winds into deeper, reactive slabs in wind loaded features. Expect fresh slabs to keep building over the day as moderate winds continue.
ind will quickly redistribute any loose snow. Recent winds have been north and easterly, be mindful of reverse loaded features. Watch your sluff, loose-dry snow may easily initiate in steep terrain.
ow freezing levels mean that the snow could be deeper and take more time that usual to bond to the rest of the snowpack. Keep an extra eye out for signs of instability today. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":148,"length":20,"key":0}],"data":{}},{"key":"9svjh","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"46spt","text":"Continued snow and moderate to strong southwesterly winds are building storm slabs that may be reactive to riders. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2gj2j","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6mehv","text":"These slabs may become less reactive as they settle after the storm, and as temperatures get colder, but give them some time to bond to the rest of the snowpack. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK"
The north of the region has seen variable winds that could have reloaded some east facing slopes. Wind slab could exist on all aspects.
Snowfall is expected to taper through Sunday, with incoming gusty winds. Northerly winds were reported with the Christmas snow, and more reactive deposits may be in reverse-loaded terrain. Expect to find ongoing slab development in windy areas. Be mindful of initiating loose-dry sluffing in steeper, sheltered terrain.
Strong south winds have redistributed the recent snow into slabs on leeward terrain features. These wind slabs may remain possible to human trigger, particularly near ridge-crests and roll-overs. Cornices may be reaching their breaking point and have the potential to act as triggers on slopes below.
At the moment, there may be a temptation to ride in areas where the snow has been deposited by the wind. Be aware that in these areas wind slabs could remain reactive longer than usual due to the extremely cold temperatures. Keep in mind that firm slabs can be triggered farther down slope than you might expect. Don't get surprised! As you transition from sheltered areas into wind affected areas, pay attention to ski and track penetration and consider backing off if you encounter firm drum-like slabs or cracking.  Sensitivity to triggering these slabs could also be greater where they have formed over surface hoar at lower elevations.
Another 17cm of low density snow fell  recently in the Renshaw area, wind slabs will be most reactive in this area. Sensitivity to triggering will be greatest on northeast aspects in this area. In the North of the region winds have been generally from the north meaning wind slab will be most likely found on southerly aspects.
Fresh wind slabs are likely to form ay upper elevations as the wind picks up this weekend. Lingering reactivity may also be observed in older wind slabs on a variety of aspects.
Storm slabs are expected to develop as snowfall accumulates through Saturday. Slabs will be more reactive on leeward (wind-loaded) slopes where deposits are deeper and stiffer. Be mindful of loose-dry sluffing in steeper wind-sheltered terrain.
A persistent slab problem associated with a crust buried 50-150 cm deep has produced a number of large and surprising avalanches recently. This layer is most likely to be triggered in windy areas where the depth of the snowpack is highly variable. Avoid likely trigger spots such as steep, rocky or convex slopes with a shallow or thin to thick snowpack. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":248,"length":107,"style":"
20-40 cm of recent snow and strong winds shifting from southwest to northeast have likely created reactive wind slabs on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d2udv","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7mis2","text":"New wind slabs aren't likely to bond very well to the old hard slab and faceted surfaces below. Sensitivity to triggering will be greatest near ridge crests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5e0v9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"91eag","text":"
20-60 cm of recent snow and strong winds from a variety of directions have formed reactive wind slabs on all aspects at treeline and above.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"963fh","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e4r9i","text":"The freshly formed slabs may remain reactive for longer than is typical because they are sitting on weak facets (sugary snow).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":105,"length":6,"key":0}],"data":{}},{"key":"37sm5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
New snow and wind are forming deep and reactive storm slabs. New and recent snow may overlie a weak interface which could result in deeper and touchier than expected storm slabs.
ew snow and wind are forming fresh, reactive storm slabs. New and recent snow may overlie a weak interface which could result in deeper and touchier than expected storm slabs.
Recent storm snow remains suspect at all elevations. It's settling above a variety of crust and surface hoar layers which makes it difficult to pinpoint where it will remain reactive. At upper elevations, wind will likely keep slabs reactive on leeward features, especially along ridges.
Ongoing snowfall and strong winds means ongoing slab development. Slabs will be more reactive on leeward (wind-loaded) slopes where deposits are deeper and stiffer. Be mindful of loose-dry sluffing in steeper wind-sheltered terrain.
With plenty of soft, light snow available for wind transport, expect to see wind slab formation in the alpine and open areas near treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6hqv3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"umvs","text":"Continued north or northwest wind means atypical cross-loading and reverse loading patterns. Be especially cautious near ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":49,"length":13,"key":0},{"offset":67,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/terms/cross-loading"}},"1":{"type":"LINK",
Moderate to strong outflow winds at all elevations have loaded westerly slopes and cross loaded north and south. Sensitivity to triggering will be greatest near ridge crests and in isolated areas where wind slab has formed over surface hoar in the treeline and below.
Some areas collected upwards of 50 cm through Christmas day with flurries continuing into Sunday. New snow fell with light winds and is still quite loose and dry, however slab avalanches could become reactive with even minor input from the wind. Expect to initiate loose-dry sluffing in steeper terrain.
Shifting wind over the past few days has left wind slabs in unusual cross-loading and reverse-loading patterns. While these slabs may be difficult to trigger, their atypical spatial distribution could surprise riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":68,"length":13,"key":0},{"offset":86,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
Continued snow and moderate to strong southerly winds are building storm slabs that may be reactive to riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"q9km","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"20jhu","text":"These slabs may become less reactive as they settle after the storm, and as temperatures get colder, but give them some time to bond to the rest of the snowpack.
Recent snow is stabilizing quickly in most areas, however cold windy weather will likely leave unstable wind slabs at upper elevations, especially along ridgetops.
Recent slab avalanches have failed with the new snow bonding over a layer of surface hoar. With ongoing flurries and gusty winds, slab avalanches may continue to be reactive to human triggers especially on leeward (wind-loaded) slopes that host thicker and stiffer slabs. Be mindful of loose-dry sluffing in steeper wind-sheltered terrain.
Ongoing flurries and strong winds means ongoing slab development. Slabs will be more reactive on leeward (wind-loaded) slopes where deposits are deeper and stiffer. Expect to initiate loose-dry sluffing in steeper wind-sheltered terrain.
Storm slabs may remain reactive to human triggers at upper elevations where the recent snow has been wind loaded over a weak layer of preserved surface hoar or where it sits over a freezing rain crust below 1500 m. We haven't had any new data on this layer for a few days so if you have any observations, please share with us on the Mountain Information Network!","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":144,"length":12,"key":0},{"offset":333,"length":28,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#surface-hoar"}},"1":{"type":"LINK","muta
eactive slabs continue to linger, especially where they sit above a surface hoar interface. Leeward wind-loaded slopes may host thicker and stiffer slabs. Be mindful of loose-dry sluffing in steeper wind-sheltered terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bmkst","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4672m","text":"
Expect deeper deposits and reactivity as you move into wind effected terrain. Avoid ridge crests and cross loaded features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"88kjl","text":"Previous southerly winds will have loaded north facing slopes, however as winds switch to the northeast expect loading on all aspects as reverse loading may occur. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":104,"length":29,"style":"BOLD"}],"entityRanges":[{"offset":137,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
New wind slab could form throughout the day on Wednesday on north and east aspects. These new slabs will likely be touchy but limited in size. Old wind slab will likely still be found on south and west. Sensitivity to triggering will be greatest near ridge crests and in the treeline and below where wind slab has formed above the December 18th surface hoar layer.
n this dry, cold period, winds have shifted from south to north with an ample supply of light, cold snow to drift into slabs. Watch for unusual cross-loading or reverse-loading patterns in wind-exposed areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":145,"length":13,"key":0},{"offset":162,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
weak layer of facets above a crust that formed in early December is found 100-200 cm deep. While it has become less likely to trigger avalanches on this layer, the consequences are large. The most suspect terrain would be shallow rocky start zones at elevations between 1800-2100 m..","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":224,"length":25,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mu
ince Friday, 25-40 cm of new snow has accumulated, forming a widespread storm slab problem that may remain reactive to human triggering. Strong south winds during the storm have likely built larger, more sensitive slabs in wind-drifted areas at upper elevations. Cold temperatures mean that the new snow could take more time than usual to bond with the previous snow surface.
Moderate to strong winds have varied in direction and have redistributed the recent snow into slabs on leeward terrain features. These wind slabs may remain possible to human trigger, particularly near ridge-crests and roll-overs. Cornices may be reaching their breaking point and have the potential to act as triggers on slopes below.
New wind slabs on south and east aspects will likely not bond to the old hard slab and faceted surfaces below. Sensitivity to triggering will be greatest near ridge crests and isolated areas where slabs have formed over surface hoar in the treeline. Periods of south west winds could have created wind slab on cross loaded features on north and west aspects.
Hard slabs exist on all aspects and at all elevations at the moment. Hard slabs can be unpredictable and surprising so when travelling on them it can be helpful to think in terms of consequences. Linking one low consequence feature to the next to get to an objective can be a great strategy to avoid a nasty surprise.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"25mpe","text":"
Recent shifting winds have created pockets of wind slabs on most exposed slopes, especially at treeline where the fetch is greater. These aren't likely not bond very well to the old hard slab and faceted surfaces below. Sensitivity to triggering will be greatest near ridge crests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":46,"length":10,"key":0}],"data":{}},{"key":"91eag","text":"In areas inland, wind slabs can be surprisingly large in size and distribution due to the greatest amount of recent snow. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":122,"style":"BOLD"}],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTA
Wind slabs will become increasingly dangerous on lee terrain features throughout the day. This is due to extreme southwesterly wind and 5-15 cm of new snow. While fresh wind slabs will form on north and east facing slopes, older wind slabs may still be reactive on steep south-facing slopes as well.
New snow and west winds at treeline on Wednesday could form thin wind slabs on east aspects. Wind slab currently exists on west aspects due to outflow. Avoid \"thick to thin\" areas where wind slabs could step down to deeper layers.
Parts of the region have seen up 20 cm of low-density snow Wednesday night with strong to extreme wind. Expect wind slabs to remain reactive at upper elevations on Friday. Be extra cautious near ridge crests and at treeline and below where wind slabs have formed above a surface hoar layer.
With plenty of soft, light snow available for wind transport, we expect to see wind slab formation in the alpine and open areas near treeline. A north or northwest wind means atypical cross-loading and reverse loading patterns. Be especially cautious near ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":184,"length":13,"key":0},{"offset":202,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/terms/cross-loading"}},"1":{"type":"LINK",
5-15 cm of new snow overnight will have been redistributed by westerly winds and may form small but reactive wind slabs in the alpine and treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9nkbq","text":"Below the new snow, shifting wind earlier in the week has left wind slabs in unusual cross-loading and reverse-loading patterns. While these slabs may be difficult to trigger, their atypical spatial distribution could surprise riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":85,"length":13,"key":0},{"offset":103,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
Wind slabs may remain reactive at lower elevations where they sit over a layer of surface hoar. Keep in mind that firm slabs can be triggered farther down slope than you might expect. Don't get surprised! ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5f03n","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fhbed","text":"As you transition from sheltered areas into wind affected areas, pay attention to ski and track penetration and consider backing off if you encounter drum-like sounds or cracking.
inds have shifted from south to north with an ample supply of light, cold snow to drift into slabs. Watch for unusual cross-loading or reverse-loading patterns in wind-exposed areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":119,"length":13,"key":0},{"offset":136,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
Overnight, westerly winds will have redistributed available snow and may form small but reactive wind slabs in the alpine and treeline. Watch for continued wind loading through out the day today.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"57pb8","text":"Shifting wind earlier in the week has left wind slabs in unusual cross-loading and reverse-loading patterns. While these slabs may be difficult to trigger, their atypical spatial distribution could surprise riders.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":65,"length":13,"key":0},{"offset":83,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
Strong south/southwest winds will create deeper deposits in wind loaded features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f96if","text":"Larger avalanches could be triggered in areas near Barkerville where new snow falls on a weak surface hoar layer.
Wind slabs may remain reactive to human traffic in exposed terrain features. They may be found on all aspects due to varying wind directions.
About 30 cm of recent snow is still available for wind transport. Fresh wind slabs will remain reactive to riders at treeline and above, especially where they are overlying cold weak sugary snow. Older and more difficult-to-trigger slabs are also present on west slopes due to the outflow winds.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":72,"length":10,"key":0}],"data":{}},{"key":"bbenu","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e2utv","text":"As wind will shift, expect pockets of wind slabs to develop behind terrain features and cross-loaded areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":88,"length":19,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://vimeo.com/465963052?embedded=true&source=vimeo_logo&owner=9824191"}},"1":{"type"
Wind slabs may remain reactive to human triggering in exposed terrain at higher elevations. Ongoing winds have continued to add to these slabs where there is still loose snow available for transport. Expect them to be most reactive in steep, unsupported terrain features or places where the slab overlies a lingering weak layer.
Winds have varied over the last couple days, wind slab could be found on all aspects as a result. Sensitivity to triggering will be greatest near ridge crests.
Recent low-density snowfalls (30-40 cm) along with constant 50 km/h southerly wind are continuing to develop reactive storm slabs at all elevations. These snow instabilities include loose dry avalanches in sheltered areas and wind slabs in lee terrain near mountain tops. If triggered, storm slabs in-motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineStyle
Freshly formed wind slabs will likely not bond to the old hard slab and faceted surfaces below. Sensitivity to triggering will be greatest near ridge crests. Shifting winds are prone to form wind slabs on cross-loaded features on various slopes.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":15,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTA
Wind slabs may be found in exposed terrain features near ridges. They could remain touchy to riders, as they may sit on weak faceted snow or surface hoar crystals.
Recent winds have created wind slabs on a variety of aspects and created a lot of variability in the upper snowpack.
Recent low-density snowfalls (40-50 cm) along with constant 50 km/h southerly wind are continuing to develop reactive storm slabs at all elevations. These snow instabilities include loose dry avalanches in sheltered areas and wind slabs in lee terrain near mountain tops. If triggered, storm slabs in-motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineStyle
6AM update: Parts of the region have seen 20 cm of low density snow overnight with strong to extreme wind. Expect fresh wind slabs to be reactive at upper elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"etf1r","text":"As wind shifts, expect pockets of wind slabs to develop behind all terrain features in the alpine and in open areas at treeline. Be extra cautious near ridge crests and at treeline and below where wind slabs have formed above the December 18th surface hoar layer.
Wind slabs may be found in steep, wind-exposed terrain. These slabs may remain triggerable by riders, as they may sit on weak faceted snow or surface hoar crystals.
With heavy snowfall, high wind, and warming temperatures, we expect many large to very large natural avalanches. Human triggered avalanches will be very likely in these conditions.
The recent and current storms have left plenty of fresh snow for wind transport. Reactive wind slabs have developed all day Wednesday on east alpine slopes and open areas at treeline.  Older and harder slabs are also present on west slopes due to outflow.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":90,"length":10,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTA
Wind slabs may exist in steep terrain features. They may be found on all aspects, including south, due to variable wind directions. These slabs may be touchy to riders and could take some time to bond to the snowpack.
With plenty of soft, light snow available for wind transport, we expect to see wind slab formation at upper elevations (and possibly in open areas at lower elevations) as winds pick up on Monday. A northwesterly wind direction means atypical cross-loading and reverse loading patterns are likely.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":242,"length":13,"key":0},{"offset":260,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/terms/cross-loading"}},"1":{"type":"LINK",
inds have shifted from south to north with an ample supply of light, cold snow to drift into reactive slabs. Watch for unusual cross-loading or reverse-loading patterns in wind-exposed areas, and anticipate reactive wind slabs on a variety of aspects. Strong outflow winds may form slabs in wind-exposed areas at lower elevations.  ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":331,"length":1,"style":"BOLD"}],"entityRanges":[{"offset":128,"length":13,"key":0},{"offset":145,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
Expect deeper deposits and reactivity as you move into wind effected terrain. Avoid ridge crests and cross loaded features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e8qdl","text":"Winds have redistributed snow from the north and south facing slopes, expect loading on all aspects as reverse loading may occur. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":70,"length":29,"style":"BOLD"}],"entityRanges":[{"offset":103,"length":15,"key":0}],"data":{}}],"entityMap":{"0":{"type":"
Storm snow has been redistributed by winds from the north and south into deeper, reactive slabs in wind loaded features on all aspects especially as you move north in the region. Take care when moving through wind affected terrain at all elevations. Expect fresh slabs to keep building over the day as moderate southwest winds continue. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4amv8","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1us76","text":"
Recent winds have shifted from south to north with an ample supply of light, cold snow to drift into reactive slabs. Watch for unusual cross-loading or reverse-loading patterns in wind-exposed areas, and anticipate reactive wind slabs on a variety of aspects. Cornices may be reaching their breaking point and have the potential to act as triggers on slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":135,"length":13,"key":0},{"offset":152,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
The recent snow may become more reactive to human triggers as it settles into a more cohesive slab.  Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
Storm slabs will build with continued snowfall over the day. Strong south/southwest winds will create deeper deposits in wind loaded features, use caution approaching ridge crest and cross loaded features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a4o93","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f96if","text":"Reactive slabs are expected as new snow falls over weak crystals and wind effected surfaces. Larger avalanches could be triggered in areas near Barkerville where new snow falls on a weak surface hoar layer.
Yesterday's intense storm brought upwards of 60 cm of new snow to the region. In open areas, strong southerly winds created deep deposits of slab in lee areas. In sheltered areas, the new snow has formed a touchy storm slab or loose dry problem.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b5e","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"crv71","text":"This new snow has fallen on an inherently weak surface formed by prolonged cold temperatures last week, and reactivity will persist into the day today.
In open areas, strong southerly winds will create deep deposits of slab on leeward slopes. In sheltered areas, the new snow will form a touchy storm slab or loose dry problem where it is falling on an inherently weak layer formed by prolonged cold temperatures last week.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":75,"length":7,"key":0}],"data":{}},{"key":"2imst","text":"Natural avalanche are likely and human triggering is very likely.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.aval
Easterly winds have likely formed wind slab on west aspects and cross loaded others. Sensitivity to triggering will be greatest near ridge crests.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cker1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8ulsl","text":"In the Kakwa area wind slab could be found on all aspects with the most reactive slabs on east aspects as the winds change to westerly.
Small inputs of new snow will form wind slabs on south through east facing slopes. Wind slabs are most reactive during their formation so watch for active wind transport for clues as to which features are being loaded. These new wind slabs are expected to bond poorly to hard, old, faceted surfaces.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2kt7j","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"aak7i","text":"Older wind slabs may remain reactive at lower elevations where they sit over a layer of surface hoar. Keep in mind that these firm slabs can be triggered farther down slope than you might expect. Don't get surprised! ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5f03n","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fhbed","text":"As you transition from sheltered areas into wind affected areas, pay attention to ski and track penetration and consider backing off if you encounter drum-like sounds or cracking.
ind slabs likely remain reactive to human triggers, especially where they sit above a surface hoar interface. Watch for cracking or visibly loaded pockets of snow in leeward terrain features like below ridge crests and roll-overs on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":231,"length":15,"style":"ITALIC"}],"entityRanges":[{"offset":167,"length":7,"key":0}],"data":{}}],"entityMap":{"0":{"type"
Wind slabs may be found in steep terrain features near ridges. They may be touchy to riders and could take some time to bond to the snowpack.
With plenty of soft, light snow available for wind transport, expect to see wind slab formation in the alpine and open areas near treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6hqv3","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"umvs","text":"Today's prevailing wind will be from the southwest, resulting in fresh, reactive windslabs forming in more typical locations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5kvj0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5i7cf","text":"Recent north or northwest wind means atypical cross-loading and reverse loading patterns are still present. Be especially cautious near ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":46,"length":13,"key":0},{"offset":64,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/terms/cross-loading"}},"1":{"type":"LINK",
Strong wind and a bit of new snow on Wednesday night may form new wind slabs in exposed terrain features at higher elevations. Slabs that form could be touchy, as they may overly weak faceted snow or surface hoar that formed during the clear, cold spell.
Storm slabs will build with continued snowfall over the day. Strong south/southwest winds will create deeper deposits in wind loaded features, use caution approaching ridge crest and cross loaded features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6m94g","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4vccb","text":"Reactive slabs are expected as new snow falls over weak crystals and wind effected surfaces. Larger avalanches could be triggered in sheltered treeline terrain features where slabs are forming over surface hoar.
Storm snow totals have exceeded 80 cm since the weekend, with more snow forecast into Tuesday. Touchy storm slabs in sheltered areas and wind slabs in exposed areas have formed. These slabs may take some time to stabilize, as they overly various smooth and/or weak layers.
Parts of the region received up to 20-25 cm of recent low-density snow, along with strong winds. Reactive wind slabs have built during the storm and will continue to develop on lee features of alpine but also on cross-loaded areas at treeline. These slabs will likely to be triggered by riders, especially along ridgelines. Storm slabs may still be found in sheltered terrain features where greater amounts of storm snow has accumulated.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":211,"length":19,"key":0}],"data":{}},{"key":"71qmt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"t
Wind slabs from new snow and strong southwest winds continue to develop and may be still reactive to human triggers. Take care around wind-loaded ridgelines and cross-loaded features mid slope.
New snow and recent shifting winds have created pockets of wind slab on most exposed slopes, especially at treeline where there is more snow available for transport. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":59,"length":9,"key":0},{"offset":155,"length":9,"key":1}],"data":{}},{"key":"d2udv","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7mis2","text":"New wind slabs aren't likely to bond very well to the old hard slab and faceted surfaces below. Sensitivity to triggering will be greatest near ridge crests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5e0v9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"91eag","text":"In areas inland, wind slabs could be surprisingly large due to Wednesday's deeper localized snowfall. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":0,"length":102,"style":"BOLD"}],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://vimeo.com/465963052?embedded=true&source=vimeo_logo&owner=9824191"}},"1":{"type":
resh, reactive wind slabs are likely to form ay upper elevations as the wind picks up through the day Saturday. Lingering reactivity may also be observed in older wind slabs on a variety of aspects.
Winds have shifted from south to north with an ample supply of light, cold snow to drift into reactive slabs. Watch for unusual cross-loading or reverse-loading patterns in wind-exposed areas, and anticipate reactive wind slabs on a variety of aspects. Cornices may be reaching their breaking point and have the potential to act as triggers on slopes below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":128,"length":13,"key":0},{"offset":145,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
Winds have shifted from south to north with an ample supply of light, cold snow to drift into reactive slabs. Watch for unusual cross-loading or reverse-loading patterns in wind-exposed areas, and anticipate reactive wind slabs on a variety of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":128,"length":13,"key":0},{"offset":145,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
Fresh wind slabs are likely to form at upper elevations as strong winds precede the next storm. Lingering reactivity may also be observed in older wind slabs on a variety of aspects.
Wind direction has varied over the last couple days, wind slab could be found on all aspects as a result. Sensitivity to triggering will be greatest near ridge crests and in isolated areas where wind slab has formed over surface hoar at treeline and below. Wind slab could also be found at low elevations as a result of ongoing outflow winds.
Expect loose wet avalanches to be widespread at all elevations, and easily triggered. More reactive conditions exists where wet snow sits over a smooth crust.
New wind slabs on south and east aspects will likely not bond to the old hard slab and faceted surfaces below. Sensitivity to triggering will be greatest near ridge crests and isolated areas where slabs have formed over surface hoar in the treeline.
Shifting wind direction will likely result in soft wind slab formation on new aspects in atypical reverse loading patterns. Expect wind loaded pockets in lee terrain features such as just below ridge crests and roll-overs. Watch for drifted or stiffer areas of snow, or cracking under your skis.
Touchy storm slabs reactive to human triggers are expected to form Saturday night at all elevations and aspects.
Wind slabs may exist in steep, lee terrain features in the high alpine.
ith plenty of soft, light snow available for wind transport, expect to see wind slab formation in the alpine and open areas near treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a4mhs","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c4ria","text":"Today's prevailing wind will be from the southwest, resulting in fresh, reactive windslabs forming in more typical locations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9d285","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6qr2","text":"Recent north or northwest wind means atypical cross-loading and reverse loading patterns are still present. Be especially cautious near ridgetops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":46,"length":13,"key":0},{"offset":64,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary/terms/cross-loading"}},"1":{"type":"LINK",
Touchy storm and wind slabs have formed from the recent 80+ cm of snow. Wind slabs are likely found in wind-affected terrain from strong southerly wind and storm slabs are found in terrain sheltered from the wind. These slabs will likely remain touchy, particularly where they sit on weak snow or hard surfaces.
Strong south/southwest winds will create deeper deposits in wind loaded features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4vccb","text":"Larger avalanches could be triggered in sheltered treeline terrain features where slabs are forming over surface hoar.
ecent winds have created wind slabs on a variety of aspects and created a lot of variability in the upper snowpack. Recent wind slab formation has been reported at all elevations, including open areas below treeline.
Overnight, heavy snowfall, strong winds and rising temperatures will have formed a widespread and reactive storm slab on all aspects and elevation. Expect deeper, and more reactive slabs to exist on north-east facing slopes in wind-affected areas. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5t3oe","text":"Rising temperatures throughout the day may promote rapid settlement and slab formation. Although snowfall is tapering on Sunday, natural and human-triggered avalanches will remain likely.
20-30 cm of recent snow and strong winds shifting from southwest to northeast have likely created reactive wind slabs on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d2udv","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7mis2","text":"New wind slabs aren't likely to bond very well to the old hard slab and faceted surfaces below. Sensitivity to triggering will be greatest near ridge crests. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5e0v9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"91eag","text":"
Wind slabs may be found on a variety of aspects as shifting winds have likely resulted in atypical reverse loading and cross loading patterns. Expect wind loaded pockets in lee terrain features such as just below ridge crests and roll-overs. Watch for drifted or stiffer areas of snow, or cracking under your skis.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1us76","text":"
Recent winds have shifted from south to north with an ample supply of light, cold snow to drift into reactive slabs. Watch for unusual cross-loading or reverse-loading patterns in wind-exposed areas, and anticipate reactive wind slabs on a variety of aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":135,"length":13,"key":0},{"offset":152,"length":15,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossary#cross-loading","target":"_blank","url":"https://www.avalanche.ca/glossary#cross-loading"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"href":"https://www.avalanche.ca/glossar
Continued strong northeasterly winds are expected to form reactive wind slabs on lee features at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7jrn5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5lk8m","text":"Freshly formed wind slabs are most likely to be found on south and westerly aspects, but older wind slabs may be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6d5qd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5shtb","text":"The freshly formed slabs may remain reactive for longer than is typical because they are sitting on weak facets (sugary snow).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":105,"length":6,"key":0}],"data":{}},{"key":"eus2k","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"597sd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
Expect loose wet avalanches to be widespread at all elevations. More reactive conditions exists where wet snow sits over a smooth crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"23pfj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"48vq","text":"
Wind slabs may be found on a variety of aspects as northerly winds have likely resulted in atypical reverse loading and cross loading patterns. Expect wind loaded pockets in lee terrain features such as just below ridge crests and roll-overs. Watch for drifted or stiffer areas of snow, or cracking under your skis.
Wind slabs will continue to develop with new snow and strong southerly wind and may remain reactive to human traffic. Expect to find them in steep, lee terrain features near ridges.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8rci5","text":"
trong southwest wind continues to redistribute the recent new snow. More reactive deposits will be found on convex rolls and leeward terrain below ridges. Wind slabs might form lower down slope than expected with the strong wind. The recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.
Expect loose wet avalanches to be widespread at all elevations. Surface snow will quickly lose cohesion with rainfall. More reactive conditions exists where wet snow sits over a smooth crust.
Watch for fresh wind slabs forming in lee terrain features. Older wind slabs sitting over a crust may also remain reactive to human triggering on steep, convex and/or unsupported terrain features.
Yesterday's storm brought 15-40 cm of new snow to the region. Associated strong southwest winds created wind slabs in the alpine and treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"14vcf","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4ijop","text":"A change in the weather pattern today is bringing strong southeast outflow winds which will effect all elevations. Expect fresh, reactive wind slabs to be forming in atypical reverse-loading and cross-loading areas, and down to lower elevations than you might usually expect.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":175,"length":15,"key":0},{"offset":195,"length":13,"key":1}],"data":{}},{"key":"c8e3f","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1arbj","text":"Keep your guard up on all aspects and elevations, and diligently watch for the changing wind direction.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#reverse-loading"}},"1":{"type"
With cold temperatures, small wind slabs are expected to be still reactive to human-triggering in the far north of the region.
trong southwest wind will continue to redistribute the recent snow and form fresh wind slabs. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine. The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.
Wind slabs may be found in steep, lee terrain features in the alpine.
Moderate southwest wind will build fresh slabs. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine.
Expect loose wet avalanches at all elevations. Surface snow will quickly lose cohesion as rainfall continues. More reactive conditions exists where wet snow sits over a smooth crust. Be prepared to change your travel plans if you encounter wet and heavy surface snow.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"23pfj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"48vq","text":"
Moderate to strong southwest wind will continue to redistribute the recent snow. Expect to find more reactive deposits around ridge features. Be especially mindful around steep and convex openings in the trees. The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.
Continued snowfall and moderate southerly winds have formed slabs that can still be triggered by riders. In sheltered areas that previously held low density snow, new, reactive slabs may form as the weather warms up.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6d1cm","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"akf8o","text":"If triggered, storm slabs in-motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineSty
Fresh storm slabs will form with heavy precipitation above 2000m and warm temperatures. Greater loading will be found in wind loaded features, from southwest winds. Expect more reactive slabs where new snow sits over a crust.
Winds have transported the dry snow and created wind slabs, which overlie a layer of buried surface hoar, and in some areas a thin crust. Due to the weak layer below, slabs reactivity may persist where the snow surface remains dry and crust-free at higher elevations. Wind slabs are most likely to be reactive in lee and cross loaded features.
Up to 80 cm of recent snow and strong winds from a variety of directions have created touchy storm slabs at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6d5qd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5shtb","text":"The freshly formed slabs may remain reactive for longer than is typical because they are sitting on weak facets (sugary snow).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":105,"length":6,"key":0}],"data":{}},{"key":"eus2k","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"597sd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
Storm slabs will build with continued snowfall over the day. Strong south/southwest winds will create deeper deposits in wind loaded features, use caution approaching ridge crest and cross loaded features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"94mea","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3vh83","text":"Reactive slabs are expected as new snow falls over weak crystals and wind effected surfaces. Larger avalanches could be triggered in sheltered treeline terrain features where slabs are forming over surface hoar.
oderate to strong southwest wind will continue to redistribute the recent snow and form fresh wind slabs. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine. The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.
A significant storm impacted the region overnight. Heavy snowfall will continue into today with upwards of 40 cm of accumulation. Strong southwest winds will create deep deposits of slab in open areas. In sheltered areas, the new snow will form a touchy storm slab or loose dry problem where it is falling on a weak layer of near surface facets and in isolated areas surface hoar formed from prolonged cold temperatures earlier in the week. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":338,"length":6,"key":0},{"offset":367,"length":12,"key":1}],"data":{}},{"key":"7ef4b","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#faceted-snow"}},"1":{"
Continued snowfall and moderate southerly winds have formed slabs that can still be triggered by riders. In sheltered areas that previously held low density snow, new, reactive slabs may form as the weather warms up.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6frll","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5s3fd","text":"If triggered, storm slabs in-motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineSty
trong southwest wind continues to redistribute the recent new snow. More reactive deposits will be found on convex rolls and leeward terrain below ridges. The strong wind might form wind slabs lower down slope than expected. The recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.
Cold and dry powder snow will likely be very reactive to riders on steep terrain by producing sluffs. Where 25 cm of new snow sits on a crust, these surface instabilities can run fairly fast and far. Stay off large, steep slopes, where loose dry avalanches that start small can entrain increasing amounts of snow, becoming larger as they descend. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":94,"length":6,"key":0},{"offset":236,"length":20,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#sluff"}},"1":{"typ
Southwest winds will continue to redeposit new snow into wind slabs in lee areas in the alpine and treeline. Expect larger, and more reactive slabs in areas that received greater snowfall amounts in yesterday's storm. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1udpo","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2i9ai","text":"Rising temperatures throughout the day could rapidly increase the likelihood of natural and human-triggered avalanches. Watch for changing conditions, and if you see strong solar radiation, a rapid rise in temperatures or temperatures above 0 C, avoid steep slopes and overhead hazards.
Southwest winds will continue to redeposit new snow into wind slabs in lee areas in the alpine and treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2v9mu","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2i9ai","text":"Rising temperatures throughout the day could increase the likelihood of avalanches. Watch for changing conditions, and if you see strong solar radiation, a rapid rise in temperatures or temperatures above 0 C, avoid steep slopes and overhead hazards.
In areas that receive 25 cm or more overnight, storm slabs may be widespread and reactive to human triggering. In sheltered areas, the storm snow may form a touchy loose dry problem where it overlies an old hard surface or near-surface faceting from previous cold temperatures.","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":22,"length":23,"style":"BOLD"}],"entityRanges":[],"data":{}},{"key":"fumi8","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1rmsv","text":"In areas that receive less new snow, strong southwest winds will likely redistribute the new snow into slabs in north-east facing lee areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8lo18","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"e87o","text":"Rising temperatures throughout the day may promote rapid settlement and slab formation. Although snowfall is tapering on Sunday, diligently watch for changing conditions as a rapid rise in temperatures could increase the likelihood of natural and human triggered avalanches.
Since Wednesday night, the region has seen 30-40 cm of low density snow along with periods of 50 km/h southerly wind.  During the storm, slabs developed in areas with the most rapid loading, but other areas may see new slabs form as the low density snow settles and temperatures warm up.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d20l5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1a4pk","text":"You may also find the potential for loose dry avalanches in sheltered areas, and wind slabs in lee terrain near mountain tops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"arlvp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5s3fd","text":"If triggered, storm slabs in-motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineSty
New snow and southerly wind will form reactive wind slabs in lee areas in the alpine and treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"230u0","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"519qc","text":"Older hard slabs exist on all aspects from last week's northerly outflow winds. We expect these slabs to be quite stubborn to human triggering, but would be treating them with caution, as they overlie a weak layer of sugary facets.
Parts of the region received up to 30-50 cm of recent low-density snow, along with strong winds. Reactive wind slabs formed during the storm and will continue to develop in lee features in the alpine and in cross-loaded areas at treeline. These slabs can be triggered by riders, especially along ridgelines.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":173,"length":3,"key":0},{"offset":206,"length":19,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#leeward"}},"1":{"t
40-80 cm of recent storm snow is expected to remain touchy on Tuesday, especially in wind loaded terrain. This storm snow may overlie a weak layer and storm slabs may remain reactive to human triggering for longer than normal. Warming temperatures may also increase the reactivity of the storm snow.
Recent strong NE winds have likely formed reactive wind slabs on lee features at all elevations. These wind slabs are most likely to be found on south and westerly aspects, but older wind slabs may be found on all aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a2ffp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1rsrv","text":"Wind slabs may remain reactive to human triggers for longer than is typical due to the weak facets (sugary snow) they are sitting on.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c2rt1","text":"
resh and soft slabs will likely develop on exposed slopes at higher elevations with the forecasted winds and snowfalls. Older and hard winds slabs can still be found, confined to shady alpine areas where dry snow was affected by the recent strong winds. While these slabs may be thin, they could be poorly bonded to the underlying snow, so be extra cautious in lee terrain and convex rolls.
Since Wednesday night, the region has seen 40-50 cm of low density snow along with periods of 50 km/h southerly wind. During the storm, slabs developed in areas with the most rapid loading, but other areas may see new slabs form as the low density snow settles and temperatures warm up.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5oakl","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"asrfi","text":"You may also find the potential for loose dry avalanches in sheltered areas, and wind slabs in lee terrain near mountain tops.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6d1cm","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"akf8o","text":"If triggered, storm slabs in-motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineSty
New and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs. Southwesterly wind during the most recent storm produced deeper and more reactive deposits in lee features. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine.
Overnight, 10-30 cm of new snow and strong southwest winds will have built reactive storm slabs, especially in lee, wind loaded areas.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f2pmg","text":"In areas that have received 25cm or more overnight, new snow may form a more widespread storm slab or loose dry problem in sheltered areas, particularly where it overlies the old hard surface or weak facetted snow.","type":"unstyled","depth":0,"inlineSty
Increasing winds will build fresh slabs. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine.
New snow and southerly wind may have formed reactive wind slabs in lee areas in the alpine and treeline. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"519qc","text":"Older hard slabs exist on all aspects from last week's northerly outflow winds. We expect these slabs to be quite stubborn to human triggering, but would be treating them with caution, as they overlie a weak layer of sugary facets.
Ongoing snowfall and strong southerly winds continue to build new reactive wind slabs in exposed terrain. These slabs likely overlie a weak interface and may remain reactive longer than normal. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4h3a4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"519qc","text":"Older hard slabs exist on all aspects from last week's northerly outflow winds. These slabs overlie a widespread weak layer of facets and may still be reactive to human triggers in steep, unsupported terrain. Until more information becomes available, reactive wind slabs should be expected on all aspects.
10-20 cm are forecast by Wednesday morning and another 5-15 cm during the day. The snow will fall with warm temperatures, forming cohesive storm slabs. Moderate southwest wind will redistribute the new snow, developing fresh wind slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a5q4h","text":"Be especially mindful around steep and convex openings in the trees and ridge features in the alpine. Smaller avalanches might step down and trigger deeper weak layers, resulting in large and destructive avalanches.
Yesterday, a significant storm impacted the region. Up to 80cm of new snow has fallen in the past 48 hours. Strong southwest winds will have created deep deposits of slab in open areas. In sheltered areas, the new snow will form a touchy storm slab or loose dry problem where it is falling on a weak layer of near surface facets and in isolated areas surface hoar formed from prolonged cold temperatures earlier in the week. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":322,"length":6,"key":0},{"offset":351,"length":12,"key":1}],"data":{}},{"key":"10sl8","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dd6tr","text":"The storm may be tapering but human triggering remains likely. This is a significant amount of new snow and the snowpack will need time to adjust to the new load.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7ef4b","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#faceted-snow"}},"1":{"
Increasing winds will impact loose snow. Expect to find more reactive deposits around ridge features. Be especially mindful around steep and convex openings in the trees. The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.
In open areas, strong southerly winds will create deep deposits of slab on leeward slopes. In sheltered areas, the new snow will form a touchy storm slab or loose dry problem where it is falling on an inherently weak layer formed by prolonged cold temperatures last week. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":75,"length":7,"key":0}],"data":{}},{"key":"158et","text":"Natural avalanche are likely and human triggering is very likely.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{
The recent storm snow and ongoing SW wind has formed reactive wind slabs in exposed terrain. These slabs likely overlie a weak faceted surface from the extended cold period and may remain reactive to human triggering for longer than normal.
Continued strong northeasterly winds are expected to form reactive wind slabs on lee features at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3hnhk","text":"Freshly formed wind slabs are most likely to be found on south and westerly aspects, but older wind slabs may be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c2rt1","text":"
South/southwest winds will create deeper deposits in wind loaded features.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"94mea","text":"Larger avalanches could be triggered in sheltered treeline terrain features where slabs sit over a touchy surface hoar layer.
trong to extreme winds have redistributed fresh snow. More reactive deposits will be found on convex rolls and leeward terrain. The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.
Saturday evening's 30-70 cm of new snow will continue to settle.  In areas that received 30 cm or more of new snow, storm slabs may still be reactive to human triggering. Southwest winds and continued snowfall throughout the day may continue to create deep deposits of slab in wind-loaded areas.
outheasterly wind during the most recent storm produced deeper and more reactive deposits in lee features. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine. The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.
outheasterly wind during the most recent storm produced deeper and more reactive deposits in lee features. Steady southwesterly winds will continue to impact snow. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine. The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.
Southwest winds will continue to redeposit new snow into wind slabs in lee areas in the alpine and treeline. Expect larger, and more reactive slabs in areas that received greater snowfall amounts in yesterday's storm.
Fresh and soft slabs will likely develop on exposed slopes at higher elevations with the forecasted winds and snowfalls. While these slabs may be thin, they could be poorly bonded to the underlying snow, so be extra cautious in lee terrain and convex rolls.
ith rising freezing level and temperature warming during the day, large cornices developed with recent snow and wind may become weak and easy to trigger. Also, keep in mind that cornice failure may trigger large avalanches.
With rising freezing level and temperature warming during the day, large cornices developed with recent snow and wind may become weak and easy to trigger. Also, keep in mind that cornice failure may trigger large avalanches.
Another round of moderate snowfall will add to our storm slab problem Tuesday night. The new storm interface will be a likely failure plane for avalanches, but recent storm interfaces may still be in play as well. Forecast warming will promote slab formation and reactivity and, if triggered, storm slabs in motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineStyl
Recently formed wind slabs are expected to remain reactive to human triggering in exposed terrain. These slabs likely overlie a weak faceted surface from the extended cold period and may remain reactive to human triggering for longer than normal.
Light new snow amounts feeding into southwest winds will continue to deposit new snow into wind slabs in lee areas in the alpine and treeline as well as in exposed areas below treeline. A pattern of rising temperatures will promote slab formation and slab reactivity on Wednesday.
10-30 cm snow fell with warm temperatures, forming a dense and reactive storm slab. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4on6","text":"The new and recent storm snow may overlie a weak interface which could result in deeper and touchier than expected slabs.Smaller avalanches might step down and trigger deeper weak layers, resulting in large and destructive avalanches.
Strong southerly winds with relatively mild temperatures have redistributed the recent storm snow into reactive wind slabs in exposed terrain. These slabs likely overlie a weak interface and may remain reactive longer than normal. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4h3a4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"519qc","text":"Older hard slabs had existed on all aspects from last week's northerly outflow winds. While these slabs have likely now stabilized in most areas, they could still be reactive in isolated places such as steep, unsupported slopes.
Wind slabs have developed with new snow and southwesterly winds and may be still reactive to human triggers. Be particularly careful around wind-loaded ridgelines and cross-loaded features mid slope.
Continued strong easterly winds are expected to form reactive wind slabs on lee features at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ar6o","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7gjgo","text":"Freshly formed wind slabs are most likely to be found on south and westerly aspects, but older wind slabs may be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2jf0a","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"394di","text":"The freshly formed slabs may remain reactive for longer than is typical because they are sitting on weak facets (sugary snow).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":105,"length":6,"key":0}],"data":{}},{"key":"37sm5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
20-40 cm of recent snow and strong winds shifting from southwest to northeast have likely created reactive wind slabs on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d2udv","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7mis2","text":"Recently formed wind slabs may remain reactive to human triggers for longer than is typical due to the weak facets (sugary snow) they are sitting on.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5e0v9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"91eag","text":"
Parts of the region received up to 20-25 cm of recent low-density snow, along with strong winds. Reactive wind slabs have built during the storm and will continue to develop on lee features of alpine but also on cross-loaded areas at treeline. These slabs are to be triggered by riders, especially along ridgelines. Storm slabs may still be found in sheltered terrain features where greater amounts of storm snow accumulated.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":211,"length":19,"key":0}],"data":{}},{"key":"71qmt","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"t
ecently formed storm slabs are expected to remain reactive to human triggering on Wednesday, especially in wind loaded terrain at higher elevations. These slabs may overlie a weak interface which could result in the slabs remaining reactive for longer than normal.
Recent strong northeasterly winds have likely formed reactive wind slabs on lee features at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"llck","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"btgpk","text":"Recently formed wind slabs are most likely to be found on south and westerly aspects, but older wind slabs may be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"93kmm","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"40o88","text":"Wind slabs may remain reactive to human triggers for longer than is typical due to the weak facets (sugary snow) they are sitting on.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eus2k","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"597sd","text":"
Recent strong northeasterly winds have likely formed wind slabs on lee features at treeline and above.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ar6o","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7gjgo","text":"The wind slabs are most likely to be found on south and westerly aspects, but older wind slabs may be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2jf0a","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"394di","text":"These wind slabs may remain reactive for longer than is typical because they are sitting on weak facets (sugary snow).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":97,"length":6,"key":0}],"data":{}},{"key":"37sm5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
Recent strong northeasterly winds have likely formed reactive wind slabs on lee features at all elevations.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3hnhk","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"13kvm","text":"Recently formed wind slabs are most likely to be found on south and westerly aspects, but older wind slabs may be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a2ffp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1rsrv","text":"Wind slabs may remain reactive to human triggers for longer than is typical due to the weak facets (sugary snow) they are sitting on.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c2rt1","text":"
Recently formed storm slabs are expected to remain reactive to human triggering on Wednesday, especially in wind loaded terrain at higher elevations. These slabs may overlie a weak interface which could result in the slabs remaining reactive for longer than normal.
Recently formed storm slabs are expected to remain reactive to human triggering on Wednesday, especially in wind loaded terrain. These slabs may overlie a weak interface which could result in the slabs remaining reactive for longer than normal.
resh and soft slabs will continue to develop with the forecasted winds and recent snowfalls. Wind slab avalanches are possible at upper elevations, where wind blows dry snow into unstable slabs. While these slabs may be thin, they could be poorly bonded to the underlying snow, like a surface hoar/crust combo, so be extra cautious in lee terrain and convex rolls.
40-80 cm of recent storm snow is expected to remain reactive to human triggering on Tuesday, especially in wind loaded terrain. This storm snow may overlie a weak layer and storm slabs may remain reactive for longer than normal. Warming temperatures may also increase the reactivity of the storm snow.
Storm snow above 1700 m is generally bonding well to the snow below. Expect human triggering to still be possible as conditions clear. Expect the greatest hazard to be in wind loaded features around ridgelines from southwest winds.
Wind from various directions has likely transported low density snow into unstable slabs in steep lee terrain.
Fresh storm slabs will form with new snow and warm temperatures. Greater loading will be found in wind loaded features, from strong southwest winds.
Expect loose wet avalanches to still be possible to trigger, even after the rain has stopped. More reactive conditions exists where wet snow sits over a smooth crust. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3ofi4","text":"Use caution in terrain that has wet and heavy surface snow.
With wet snow, rain and ongoing warm temperatures, cornices remain heavy and fragile - take care on and under ridge lines.
The weekend storm produced 20 to as much as 50 cm of storm snow with plenty of strong wind that was mainly out of the south. Your best terrain choice is going to be wind sheltered terrain at and below treeline. If you're stepping out into more complicated terrain you're likely to find significant wind loading and the potential for human triggered avalanches.
Expect loose wet avalanches to still be possible to trigger, even after the rain has stopped. More reactive conditions exists where wet snow sits over a smooth crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"23pfj","text":"Use caution in terrain that holds wet and heavy surface snow.
Touchy storm and wind slabs have formed from the 100+ cm of snow that fell since January 1. Wind slabs are likely found in wind-affected terrain from strong southerly wind and storm slabs are found in terrain sheltered from the wind. These slabs will likely remain touchy, particularly where they sit on weak snow or hard surfaces.
Wind slabs from new snow and strong southwest winds have developed and may be still reactive to human triggers. Take care around wind-loaded ridgelines and cross-loaded features mid slope.
Storm and wind slabs that formed earlier this week may remain touchy to human traffic. Storm slabs are most likely found in terrain sheltered from the wind and wind slabs in exposed terrain features at higher elevations. These slabs sit on weak snow or hard surfaces that may take some time to bond.
New storm slabs may form in sheltered areas and wind slabs in wind-exposed terrain during Thursday night's storm. These slabs are expected to remain reactive over the day on Friday.
New storm slabs may form in sheltered areas and wind slabs in wind-exposed terrain during Thursday night's storm. These slabs are expected to remain reactive over the day on Friday. The thickest slabs are anticipated in the south of the region.
Rapidly cooling temperatures help to stabilize the recent storm snow at low, previously wet elevations. At elevations where dry snow fell, storm slabs may remain reactive in wind loaded terrain features and where recent snow sits over a weak layer of surface hoar.
Storm snow totals have exceeded 100 cm since the weekend, which has formed touchy storm slabs. Wind slabs may be found in lee terrain features near ridges, as the snow fell with strong wind from the south. These slabs may take some time to stabilize, as they sit on various smooth and/or weak layers.
Storm snow totals have exceeded 100 cm since the weekend, which has formed touchy storm slabs in areas sheltered from the wind and wind slabs in exposed areas at higher elevations. These slabs may take some time to stabilize, as they sit on various smooth and/or weak layers.
As the next storm rolls in, new snow and wind will bolster the storm slab problem. Even in places that receive minimal new snow Thursday, plenty of recent, low density snow is available for transport into wind slabs as winds pick up ahead of the storm's arrival. New and recent snow may overlie a weak interface which could result in deeper and touchier than expected storm slabs.
Plenty of recent, low density snow is available for transport as winds pick up ahead of the next storm. Fresh wind slabs overlie a weak interface which could result in them being particularly touchy and remaining reactive for longer than usual.
lenty of recent, low density snow is available for transport as winds pick up ahead of the next storm. Fresh wind slabs overlie a weak interface which could result in them being particularly touchy and remaining reactive for longer than usual.
Rapidly cooling temperatures have helped stabilize the recent storm snow. Slabs may remain reactive in wind loaded terrain features at upper elevations where the snow fell dry.
Time and relatively cool temps are likely tempering reactivity of wind slabs formed over the weekend, but a fresh round of wind slabs will likely form Thursday as southwest wind picks up ahead of the next storm.
Time and cold temperatures are likely tempering reactivity of wind slabs formed over the weekend, but a fresh round of wind slabs may form Thursday as southwest wind picks up ahead of the next storm.
Last week's 20-40 cm of new snow has been redistributed by strong winds shifting from southwest to northeast creating wind slabs on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d2udv","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7mis2","text":"Recently formed wind slabs may remain reactive to human triggers for longer than is typical due to the weak facets (sugary snow) they are sitting on.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5e0v9","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"91eag","text":"
Recent strong northeasterly winds have likely formed wind slabs on lee features at treeline and above.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ar6o","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7gjgo","text":"These wind slabs are most likely to be found on south and westerly aspects, but older wind slabs may be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2jf0a","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"394di","text":"These wind slabs may remain reactive for longer than is typical because they are sitting on weak facets (sugary snow).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":97,"length":6,"key":0}],"data":{}},{"key":"37sm5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type
Hazard may increase throughout the day as snowfall and southwest winds build fresh, reactive wind slabs in lee areas in the alpine and treeline.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9u5bc","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"as6se","text":"Older, hard windslabs exists below the new snow from northeasterly outflow winds earlier in the week. These slabs exists on south and west aspects and may be quite stubborn to trigger, but would be larger and more consequential.
Moderate snowfall is expected to form a widespread to storm slab problem for Thursday. The current warming pattern will promote slab formation and slab reactivity.
Recently formed wind slabs are expected to remain reactive to human triggering in exposed terrain. These slabs may overlie a weak faceted surface from the extended cold period and could remain reactive to human triggering for longer than normal.
Wind slabs may be found in wind-loaded terrain at high elevations due to recent strong southerly wind.
Another round of moderate snowfall overnight through Wednesday morning will add to our storm slab problem. The new storm interface will be a likely failure plane for avalanches, but other recent storm interfaces may also be in play. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8s94v","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"acj30","text":"Forecast warming will promote slab formation and reactivity and, if triggered, storm slabs in motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineSty
p to 20 cm of snow fell with moderate southwest wind which formed a reactive wind slab. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cha4p","text":"The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs. Small avalanches may step down to deeper weak layers and result in large and destructive avalanches.
Strong SW winds Friday with snowfall built fresh storm with more reactive and deeper deposits in leeward terrain. The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected storm slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"ek110","text":"
Rapidly cooling temperatures have helped stabilize the recent storm snow at lower elevations. Slabs may remain reactive in wind loaded terrain features at upper elevations where the snow fell dry.
Moderate to strong southwest wind will continue to build fresh slabs. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d8fm8","text":"Cornices will continue to grow and might fail with the additional load.
40-80 cm of rapidly settling storm snow is expected to remain reactive to human triggering on Thursday, especially in wind loaded terrain. This storm snow may overlie a weak layer and storm slabs may remain reactive for longer than normal. Strong solar radiation may increase the reactivity of the storm snow on steep south facing slopes in the afternoon.
New storm and wind slabs are expected to form, with anywhere from 20 to 30 cm of snow forecast for Wednesday night into Thursday. The most snow is forecast for the southern half of the island. Wind slabs are anticipated to develop in lee terrain features from strong southwest wind. This snow will build on the 100+ cm of snow received since January 1, which still may take more time to bond to previous surfaces.
A weak layer of faceted grains above a hard melt-freeze crust may be found around 40 to 80 cm deep. This layer continues to produce large avalanches that have the potential to propagate far. The problem is most prevalent on northwest to northeast aspects at treeline and alpine elevations.
New storm and wind slabs are expected to form on Wednesday night and over the day on Thursday. Wind slabs are anticipated to develop in lee terrain features at the mountain tops from strong southwest wind. This snow will build on the 100+ cm of snow received since January 1, which still may take more time to bond to previous surfaces.
New storm slabs may form in sheltered areas and wind slabs in wind-exposed terrain. These slabs will continue to build over the 100+ cm of snow that fell since January 1, which may take some more time to bond to various weak or smooth layers.
New storm slabs may form in sheltered areas and wind slabs in wind-exposed terrain. The highest snowfall amounts are forecast for the south of the region, meaning the slabs are expected to be thicker and potentially touchier. These slabs will continue to build over the 50+ cm of snow that fell since January 1, which may still take some time to bond to various weak or smooth layers.
Snowfall is expected to continue until Friday night, bringing 20 cm + of low-density storm snow. This will add up to the amount the region received last weekend during the previous storm (30-70 cm). Storm avalanches are expected to release, including loose dry avalanches in sheltered areas and wind slabs in lee terrain at mountain tops.
Snowfall is expected to continue until Friday night, bringing up to 40 cm + of low-density storm snow. This will add up to the amount the region received last weekend during the previous storm (20-60 cm). Reactive storm avalanches are expected at all elevations, including loose dry avalanches in sheltered areas and wind slabs in lee terrain at mountain tops. If triggered, storm slabs in-motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineStyle
Snowfall is expected to continue until Friday night, bringing up to 40 cm + cm of low-density storm snow. This will add up to the amount the region received last weekend during the previous storm (20-60 cm). Reactive storm avalanches are expected at all elevations, including loose dry avalanches in sheltered areas and wind slabs in lee terrain at mountain tops. If triggered, storm slabs in-motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineStyle
Slabs formed from recent storm snow may still be triggered. Wind slabs may be the touchiest, existing in lee terrain features from strong east to southwest wind. Storm slabs may still be found in sheltered terrain features.
Recent strong NE winds have likely formed wind slabs on lee features at treeline and above. These wind slabs are most likely to be found on south and west aspects, but older wind slabs may be found on all aspects.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2jf0a","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"394di","text":"These wind slabs may remain reactive for longer than normal because they are sitting on weak facets (sugary snow).","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":93,"length":6,"key":0}],"data":{}}],"entityMap":{"0":{"type
A deep persistent slab problem formed by a crust down 140-200 cm has created a low likelihood, high consequence scenario that is difficult to forecast. This old and deeply buried weak layer is one of the most challenging problems to predict and for people to safely manage in the backcountry. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":156,"length":15,"style":"BOLD"}],"entityRanges":[{"offset":1,"length":29,"key":0}],"data":{}},{"key":"6o3vf","text":"Although it hasn't shown recent activity, this problem is most likely to be triggered from thin or variable snowpack depth on wind-affected features, ridge crests, and near rocky outcroppings. The same feature or path can slide repeatedly when the persistent weak layer is reloaded with recent snow.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","m
Ongoing moderate to strong southerly winds have redistributed the recent storm snow into reactive wind slabs in exposed terrain. These slabs may overlie a weak interface and could remain reactive longer than normal.
Up to 20 cm of snow accompanied by strong winds and warmer temperatures have formed reactive wind slabs. They will likely be touchier on leeward slopes with deeper, wind-loaded conditions, especially where they sit on surface hoar or crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"aei26","text":" ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4qqs4","text":"
Upwards of 70 cm of snow is forecast above around 1000 m, which will rapidly form new storm slabs. These slabs are expected to remain reactive to humans over the day on Friday. Wind slabs are also expected to form near the mountain tops, from strong southwest wind.
Natural cornice fall is possible with upper elevation warming and solar radiation. Cornice fall could be a hazard on its own and it could trigger a deeper slab avalanche from the slope below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"382gm","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"beice","text":"Loose wet avalanches are possible, especially on southerly aspects and steeper slopes.
0 cm new on Saturday with dropping temperatures added fresh wind slab development.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5p1t2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fve35","text":"Winds have been SE, SW in the storm.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"100up","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4871c","text":"Strong to extreme winds have redistributed fresh snow. More reactive deposits will be found on convex rolls and leeward terrain. The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.
10-20 cm new snow are forecast by Wednesday morning and another 5-10 cm during the day. The snow will fall with warm temperatures forming cohesive storm slabs. Moderate to strong southwest wind will redistribute the new snow developing fresh wind slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"45jhf","text":"Expect to find more reactive deposits around ridge features. Be especially mindful around steep and convex openings in the trees. The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs. Smaller avalanches might step down and trigger deeper weak layers resulting in large and destructive avalanches.
Ongoing strong wind has created a widespread wind slab problem at all elevations. Shifting wind directions means that wind slabs should be expected on all aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"d2udv","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7mis2","text":"Recently formed wind slabs may remain reactive to human triggers for longer than is typical due to the weak facets (sugary snow) they are sitting on.
ockets of reactive wind slabs are possible at upper elevations, where wind blows have blown recent dry snow into unstable slabs. While these slabs may be thin, they could be poorly bonded to the underlying snow, like a surface hoar/crust combo, so be extra cautious in lee terrain and convex rolls.
A concerning weak layer of faceted grains above a melt-freeze crust is around 100 to 150 cm deep, which has produced large avalanches. This problem has been less active recently, but we have been reminded multiple times in the last month that this layer could remain a concern all winter. Thin rocky start zones are the most likely place to trigger this layer. Snow loading from new snow and/or wind, daytime warming, cornice falls, and step-downs from smaller avalanches could increase the chance of an avalanche on this layer.
oderate to strong southwest wind continues to redistribute the recent new snow. More reactive deposits will be found on convex rolls and leeward terrain below ridges. Wind slabs might have formed lower down slope than expected with the strong wind. The recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cvmuj","text":"It is uncertain how the forecast warm temperatures will affect the snowpack. Small avalanches may step down to deeper weak layers and result in large and destructive avalanches.
Strong wind from various directions has formed touchy wind slabs in lee terrain features in wind-exposed terrain.
oderate to strong southwest wind will redistribute 5-15 cm new snow and continue to form fresh wind slabs. Be especially mindful around steep and convex openings in the trees and ridge features in the alpine. Wind slabs might have formed lower down slope than expected with the strong wind.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dnjm3","text":"The new and recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs. Small avalanches may step down to deeper weak layers and result in large and destructive avalanches.
A deep persistent slab problem formed by a crust down 100-270 cm has created a low likelihood, high consequence scenario that is difficult to forecast. There has been an increase in avalanche reports on this deep layer over the last week. This problem is likely to be triggered on steep, rocky slopes with a shallow or thin-to-thick snowpack. The same feature or path can slide repeatedly when the persistent weak layer is reloaded with new snow. ","type":"unstyled","depth":0,"inlineStyleRanges":[{"offset":208,"length":4,"style":"BOLD"}],"entityRanges":[{"offset":2,"length":28,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK","m
Another round of moderate snowfall overnight through Wednesday morning will add to our storm slab problem. The new storm interface will be a likely failure plane for avalanches, but other recent storm interfaces may also be in play. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"98f52","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"70d9l","text":"Forecast warming will promote slab formation and reactivity and, if triggered, storm slabs in motion may step down to deeper layers and result in very large avalanches. ","type":"unstyled","depth":0,"inlineSty
The recent snow accompanied by strong winds and slight warming has formed new and reactive wind slabs. They could have a poor bond to the crusty snow surfaces below. Wind slab avalanches could step down and trigger the deeper persistent slab.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"49m2f","text":"
Earlier in the week, 30 to 50 cm of new snow fell with warm temperatures, creating a denser slab above a weak layer of surface hoar which sits on a hard melt-freeze crust below 1300m. Below ~1000m, rain on snow has probably destroyed this layer of surface hoar and formed a crust on the surface. The most suspect areas would be sheltered, open areas near treeline.
he recent snow from Tuesday's storm accompanied by strong winds and slight warming has formed new and reactive wind slabs. They could have a poor bond to the crusty snow surfaces below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6jv1","text":"
Thin wind slabs may be found in steep, lee terrain features at higher elevations.
In the White Pass area, up to 40 cm of new snow has been redistributed by strong southerly winds into wind slabs in lee areas at all elevations. Winds may subside a little today, but if there is any snow left to transport it will be creating fresh, more reactive slabs.
Earlier in the week, 10-20 cm of new snow fell with strong southwest wind, which will continue into today. Expect to find reactive wind slabs in lee terrain features in wind-exposed terrain. It is possible you could also find storm slabs in steep terrain sheltered from the wind. These slabs may be particularly touchy where they sit on weak layer of surface hoar.
Earlier in the week, 30 to 50 cm of new snow formed a  storm slab problem in sheltered areas. In wind-exposed areas, strong southwest winds have built deep deposits of wind slab in lee terrain features. In the past few days, these slabs have been quite touchy with wide propagation observed where they overlie a weak layer of surface hoar which sits on a hard melt-freeze crust below 1300m. The presence of this weak layer means that reactivity may persist today, particularly with a rise in temperatures promoting rapid settlement in the upper snowpack.
These isolated pockets of at higher elevations may remain reactive to human triggers in lee terrain near ridge crest or in extreme terrain. Fresh wind slabs may form as southwest winds increase during the day. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f9250","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3vp5p","text":"As avalanche danger decreases, keep up good travel habits when moving through avalanche terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":44,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK"
50 cm or more may accumulate by the end of Thursday morning, forming new storm and wind slabs. An avalanche cycle may occur during the peak of the storm and slabs will likely remain reactive to riders over the course of the day. Wind slabs will likely continue to build even once the snow stops falling.
An intense storm impacting the region has brought 15-30 cm of new snow to the White Pass, with continued snowfall expected throughout the day. The accompanying strong to extreme southerly winds and rising temperatures will continue to create deep deposits of wind slab in lee areas.
Expect to find more reactive depositions in open terrain and steep, convex features. Cornices may be extra touchy and fail naturally with solar input or daytime heating.
n top of all the other avalanche problems, sunny weather continues, and temperatures are forecasted to stay above 0 C at all elevations through Sunday morning at least. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5n7qs","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9na70","text":"Both cornices and wet loose avalanches may be a concern.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"54iqc","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"37qvq","text":"Avoid avalanche terrain and overhead hazard when it feels like the sun is packing a punch. Remember that even a small wet avalanche can be dense and may push you around more than expected.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"52ffi","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9ir40","text":"Natural cornice fall is possible with upper elevation warming and solar radiation. Cornice fall could be a hazard on its own and it could trigger a deeper slab avalanche from the slope below.
The upper snowpack is tricky right now. Recent storm snow has been most reactive where it overlies surface hoar. Along with a handful of suspect layers in the upper snowpack, expect to find a more reactive slab on wind-affected slopes at higher elevations, and anywhere a slab forms over crust or surface hoar layers.
Strong westerly winds overnight Friday will quickly impact recent loose snow. Expect to find more reactive depositions in  open terrain and steep, convex features. Cornices may be extra touchy and fail naturally with solar input or daytime heating.
Large cornices around ridge crests are expected to become weak during the warming event this weekend. With each day of warming, cornice failures will become more likely.
These isolated pockets of wind slab at higher elevations may remain reactive to human triggers in lee terrain near ridge crest or in extreme terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a8pv1","text":"Recent winds have varied in direction, expect wind slabs on all aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f9250","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3vp5p","text":"As avalanche danger decreases, keep up good travel habits when moving through avalanche terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":44,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK"
The warming and sun are not expected to have a major impact on the rain soaked snowpack but surficial loose wet avalanches may become possible from steep, sun exposed slopes as the warming persists. The more the surface crust breaks down over the weekend, the more likely wet loose avalanches will become.
Wind slabs may be found in steep terrain features, formed from strong southwest to northwest wind.
oderate to strong westerly wind continues to redistribute the recent new snow. More reactive deposits will be found on convex rolls and leeward terrain below ridges. Wind slabs might have formed lower down slope than expected with the strong wind. The recent snow may overlie a weak interface which could result in deeper and touchier than expected slabs.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cvmuj","text":"It is uncertain how the forecast warm temperatures will affect the snowpack. Small avalanches may step down to deeper weak layers and result in large and destructive avalanches.
Up to 35 cm new snow fell with warm temperatures building a dense storm slab. Expect to find more reactive deposits around ridge features. Be especially mindful around steep and convex openings in the trees. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bnfta","text":"The new and recent storm snow may overlie a weak interface which could result in deeper and touchier than expected slabs. Smaller avalanches can step down and trigger deeper weak layers resulting in large and destructive avalanches.
New wind slabs may form over the day as new snow and strong southwest wind impact the region. These slabs will sit on previously reactive wind slabs.
These isolated pockets of at higher elevations may remain reactive to human triggers in lee terrain near ridge crest or in extreme terrain. Fresh wind slabs may form as southwest winds increase during the day. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b3uv4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3njnj","text":"As avalanche danger decreases, keep up good travel habits when moving through avalanche terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":44,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK"
Wind slabs remain reactive to human triggering in exposed terrain at higher elevations. Ongoing periods of strong wind continue add to these slabs. Expect them to be most reactive in steep, unsupported terrain features or places where the slab overlies a lingering weak layer.
Wind slabs continue to develop with new snow and southwesterly winds and may be still reactive to human triggers. Be particularly careful around wind-loaded ridgelines and cross-loaded features mid slope.
A series of layers in the upper snowpack continue to be reactive especially where influenced by wind. Expect to find a more reactive slab on wind-affected slopes at higher elevations, and anywhere the new snow bond as a slab over crust or surface hoar layers.
Wet snow, rain and warm temperatures over the last days have kept cornices heavy and fragile - take care on and under ridge lines.
The new storm snow will likely have a poor bond to the underlying old snow surfaces. Storm slabs will be reactive, especially on leeward slopes where deeper and stiffer slabs exist due to wind loading. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6se73","text":"Dry-loose avalanches may be seen from steeper slopes, especially where a firm crust exists below the new snow.
Recent strong winds have formed slabs in exposed high elevation terrain. Wind slabs have been most reactive where they overlie a thin crust. Expect these lingering wind slabs to remain reactive to human triggering on steep, convex and/or unsupported terrain features.
The western side of the divide with 20-40 cm of new snow resulting in a widespread storm slab problem on steep slopes at all elevations. The eastern side of the divide will receive less snow and have a more localized problem on wind-affected slopes, especially near ridges
Wind slabs may still be found in steep terrain features from strong southwest wind.
New storm slabs are expected to form at higher elevations during the storm on Thursday.
Wind slabs are may remain reactive on Sunday, especially on shady aspects and where they overlie a crust. Cornices will also continue to weaken with warming through the weekend.
Rain is generally expected to mountain top elevations overnight but snowfall is possible in the high alpine on Thursday as freezing levels drop during the day. If you find new snow, wind slabs should be expected in lee features.
New storm slabs are expected to form at the highest elevations on Thursday where the storm produces mainly storm snow.
New snow will likely form unstable slabs where there is more than 20 cm of new snow, on wind-affected slopes at higher elevations, and anywhere the new snow is burying crust or surface hoar layers.
Extreme wind and new snow will rapidly form wind slabs in lee terrain features. Storm slabs may also form in areas sheltered from the wind.
New wind slab formation is expected at higher elevations on Thursday. If you are seeing more than around 25 cm of new snow, a more widespread storm slab problem should be expected.
New snow will likely form unstable slabs . The most suspect areas would be parts of the region that receive more than 20 cm of new snow, wind-affected slopes at higher elevations, and anywhere the new snow is burying crust or surface hoar layers.
Strong northwesterly winds overnight Friday will quickly impact recent loose snow. Expect to find more reactive depositions in  open terrain and steep, convex features. Cornices may be extra touchy and fail naturally with solar input or daytime heating.
A persistent slab problem formed by a crust down 90-160 cm has created a low likelihood, high consequence scenario that is difficult to forecast. It is uncertain how the forecast warm temperatures will affect the snowpack and if we will see more activity on this layer during the warm period. Avoid likely trigger spots such as steep, rocky slopes with a shallow or thin-to-thick snowpack.
ind slabs are likely confined to shady alpine areas where dry snow still exists.
Expect loose wet avalanches to still be possible to trigger on steep sunny slopes. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fm5p8","text":"Watch for terrain that holds heavy and wet surface snow.
Recent strong winds have formed slabs in exposed high elevation terrain. Wind slabs have been most reactive where they overlie a thin crust. Expect these lingering wind slabs to remain reactive to human triggering on steep, convex and/or unsupported terrain features. Ongoing slab development is expected where there is still loose surface snow available for wind transport.
p to 10 cm of new snow and strong wind will possibly build new and reactive wind slabs at upper elevations. They could be poorly bonded to the underlying snow surfaces, like a surface hoar/crust combo, so be extra cautious in leeward terrain and convex rolls.
Expect loose wet avalanches to still be possible to trigger, even as the weather improves. Greatest concern is areas of dry snow at higher elevations that will see warm temperatures and sunshine for the first time. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"evjb1","text":"Watch for terrain that holds heavy and wet surface snow.
Expect loose wet avalanches to still be possible to trigger, even as the weather improves. Greatest concern is areas of dry snow at higher elevations that will see warm temperatures and sunshine for the first time. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3bure","text":"Watch for terrain that holds heavy and wet surface snow.
Expect loose wet avalanches to still be possible to trigger, even as the weather improves. Greatest concern is higher terrain that saw mixed precipitation and minimal rain throughout this storm. Watch for terrain that holds heavy and wet surface snow.
Up to 25 cm of new storm snow (or possibly 30-40 cm around Kitimat) falls with continuing south and southwest wind, potentially increasing the reactivity of storm slabs in lee features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":172,"length":3,"key":0}],"data":{}},{"key":"9tsm4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"45mua","text":"50-100 cm below the snow surface, Faceting from the prolonged cold temperatures may increase the chance of a storm slab in motion stepping down to the previous storm interface.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":34,"length":8,"key":1},{"offset":130,"length":13,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#leeward"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#faceted-snow"}},"2":{"type":"
New wind slabs may form over the day from some new snow and strong southerly wind. Use particular caution when entering steep terrain features on lee slopes.
5-20 cm of snow accompanied by strong winds and warmer temperatures by Thursday afternoon may build reactive storm slabs. They will likely be touchier on leeward slopes with deeper, wind-loaded conditions, especially where they sit on surface hoar or crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4qqs4","text":"Loose-dry sloughing may exist on steeper terrain features.
The new snow accompanied by strong winds and slight warming on Thursday may form new and reactive wind slabs. They potentially could have a poor bond to the crusty snow surfaces. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"49m2f","text":"Dry loose sloughing may be seen from steeper slopes and terrain features.
New snow and wind will likely form unstable slabs in steep lee terrain features, especially along ridgetops.
A reactive storm slab should be expected where the snow surface remains dry and crust-free at higher elevations. They will be most reactive in wind loaded terrain.
he new snow from Tuesday's storm accompanied by strong winds and slight warming on Thursday may form new and reactive wind slabs. They could have a poor bond to the crusty snow surfaces below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6jv1","text":"Dry loose sloughing may be seen from steeper slopes and terrain features.
The recent storm snow may become reactive as it settles rapidly with warming on Friday. It will likely be touchy in high elevation wind loaded terrain. Cornices will also begin to weaken with warming Friday.
A series of layers in the upper snowpack continue to be reactive especially where influenced by wind. Expect to find a more reactive slab on wind-affected slopes at higher elevations, and anywhere the new snow bonds as a slab over crust or surface hoar layers.
Pockets of wind affected snow from the strong south-southwest winds may still be reactive to a human trigger. Take care around wind loaded ridgelines and cross loaded features mid slope. Recent winds have varied - check for wind slab on all aspects.
A persistent slab problem formed by a crust down 90-160 cm has created a low likelihood, high consequence scenario that is difficult to forecast. It is uncertain how the forecast warm temperatures have affected the snowpack and if we will see more activity on this layer after the warm period. Avoid likely trigger spots such as steep, rocky slopes with a shallow or thin-to-thick snowpack.
30 cm of storm snow overlies a layer of buried surface hoar, and in some areas a thin crust. Due to the weak layer below, storm slabs reactivity may persist where the snow surface remains dry and crust-free at higher elevations. Storm slabs are most likely to be reactive in wind-loaded terrain.
With heavy precipitations and warm temperatures over the last few days, cornices may have become heavy and fragile - take care on and under ridge lines.
The incoming storm will create a variety of problems across the region. The western side of the divide could see 20-40 cm of new snow resulting in a widespread storm slab problem on steep slopes at all elevations. The eastern side of the divide will receive less snow and have a more localized problem on wind-affected slopes, especially near ridgetops.
The warming and sun are not expected to have a major impact on an already warm snowpack but wet loose avalanches should be expected from steep terrain features. Extra caution will be required around steep south facing slopes when the sun is strong.
The warming and sun are not expected to have much impact on a rain soaked snowpack but loose wet avalanches could be possible from steep, sun exposed slopes. The more the surface crust breaks down over the weekend, the more likely wet loose avalanches will become.
Reactive storm slabs should be expected where the snow surface remains dry and crust-free at higher elevations. They will be most reactive in wind loaded terrain.
Wind slabs are expected to remain reactive on Saturday, especially where they overlie a crust. Cornices will also continue to weaken with warming through the weekend.
Moderate to strong southeast through southwest winds continue to form wind slabs in exposed terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7td6u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3ps0g","text":"Right now, the pockets of windslab could be small, but if you are finding a frozen crust at low elevations, a windslab that formed on top may be more reactive, and a small avalanche could take you for a longer ride down the slope, and over other hazards. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5aj72","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"al9d7","text":"Always consider which direction an avalanche could carry you, and have a safe escape route in mind.
High terrain features may hold pockets of wind slab that are still possible to trigger. Take care where the rain crust things and drier snow can be found near ridgelines.
ind slabs are likely confined to shady alpine areas where dry snow still exists. While these slabs may be thin, they could be poorly bonded to the underlying snow, so be extra cautious in lee terrain and convex rolls.
Exposed slopes at higher elevations may harbour wind slabs that could be reactive in exposed areas. While these slabs may be thin, they could be poorly bonded to the underlying snow, so be extra cautious in lee terrain and convex rolls.
Be mindful around steep and convex openings in the trees and along ridge features where the recent snow could remain reactive to triggering. The storm snow may overlie a weak interface, which could result in wider and touchier slabs than expected.
Snowfall continues through the day, we are expecting  a storm total of 25-45 cm by the end of the day on friday. Strong southwest wind is potentially increasing the reactivity of storm slabs in lee features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":194,"length":3,"key":0}],"data":{}},{"key":"6qvqe","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7i006","text":"Freezing levels are variable over the region, and could depend on the intensity of the storm, so be ready for the snow/rain conditions to vary as you change elevations, and as the day progresses.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9tsm4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"45mua","text":"50-100 cm below the snow surface, Faceting from the prolonged cold temperatures may increase the chance of a storm slab in motion stepping down to the previous storm interface.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":34,"length":8,"key":1},{"offset":130,"length":13,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#leeward"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#faceted-snow"}},"2":{"type":"
More new snow and strong SW winds will add to the existing storm slab problem. The recent storm snow is most reactive in wind loaded areas on north and east aspects at higher elevations.
More new snow and strong SW winds will add to the existing storm slab problem. The recent storm snow is expected to be most reactive in wind loaded areas on north and east aspects at higher elevations.
Pockets of wind affected snow from the strong south-southwest winds may still be reactive to a human trigger. Take care around wind loaded ridgelines and cross loaded features mid slope. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8dcv5","text":"
New snow will likely form unstable slabs in certain types of terrain. The most suspect areas would be parts of the region that receive more than 20 cm of new snow, wind-affected slopes at higher elevations, and anywhere the new snow is burying crust or surface hoar layers.
New snow may be redistributed by northwest winds to create small but reactive pockets of wind slab in the alpine and treeline.
Storm slabs are expected to develop during the storm and likely remain reactive on Thursday. Wind slabs will also form in lee terrain features in wind-exposed terrain from strong southwest wind.
Around 10 to 20 cm of recent snow fell with strong southwest wind, which is forecast to continue into Friday. Expect to find touchy wind slabs in lee terrain features in wind-exposed terrain. It is possible you could also find storm slabs in steep terrain sheltered from the wind. These slabs may be particularly touchy where they sit on surface hoar crystals.
The recent storm snow remains reactive in wind exposed terrain at higher elevations. In the Selkirks around Revelstoke, a more widespread storm slab problem may still exist, especially where the storm snow overlies a weak layer of surface hoar.
Moderate to strong southwest wind is continuing wind slab formation in exposed terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3mncq","text":"These slabs may overlie a weak faceted surface from the extended cold period and could remain reactive to human triggering for longer than normal.
New snow will fall on a reactive surface hoar layer and smooth crust. Be extra cautious in sheltered areas at treeline and below where large surface hoar may be prevalent, especially in the Coquihalla.
Around 30 to 50 cm of snow has formed touchy storm and wind slabs. Storm slabs are most likely in areas sheltered from the wind and wind slabs are prominent in wind-exposed terrain from strong southwest wind. This snow may remain touchy for a few days, particularly where it overlies weak surface hoar crystals, which also may sit on a hard melt-freeze crust.
The warming and sun are not expected to have a major impact on the rain soaked snowpack but loose wet avalanches may become possible from steep, sun exposed slopes as the warming persists. The more the surface crust breaks down over the weekend, the more likely wet loose avalanches will become.
The heaviest snowfall for this storm cycle is arriving with the weakest wind.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1lcpj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bnhue","text":"Recent wind has been in the moderate to strong range, mostly from the southwest. These winds formed reactive windslabs that are now buried by more storm snow.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"efebi","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1t33r","text":"Signs of reactive windslab may now be harder to spot, so use extra caution around ridge tops and convex rolls. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":82,"length":10,"key":0},{"offset":97,"length":12,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#ridgetop"}},"1":{"
The recent storm snow seems most reactive in the Northern Selkirks, especially where it overlies a weak layer of surface hoar. In the Monashees, the problem is most likely confined to a wind slab problem.
New snow and strong wind are expected to form new wind slabs in lee terrain features in wind-exposed terrain. These will sit on potentially reactive wind slabs formed during last weekend's storm. Snow may slide easily below treeline, where it will fall onto a hard crust.
ontinued snow transport will keep building wind slabs, which are likely confined to shady alpine areas where dry snow still exists. While these slabs may be thin, they could be poorly bonded to the underlying snow, so be extra cautious in lee terrain and convex rolls.
Exposed slopes at higher elevations will continue to see effects from the winds. Lingering and new wind slabs could remain reactive in open areas. While these slabs may be thin, they could be poorly bonded to the underlying snow, so be extra cautious in lee terrain and convex rolls.
30 cm of recent snow overlies a layer of buried surface hoar, and in some areas a thin crust. Due to the weak layer below, slabs reactivity may persist where the snow surface remains dry and crust-free at higher elevations. Wind slabs are most likely to be reactive in lee and cross loaded features.
he recent snow from Tuesday's storm accompanied by strong winds and slight warming have formed new and reactive wind slabs. They could have a poor bond to the crusty snow surfaces below.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"a6jv1","text":"Dry loose sloughing may be seen from steeper slopes and terrain features.
ind slab avalanches are possible at upper elevations where wind has blown dry snow into unstable slabs. While these slabs may be thin, they could be poorly bonded to the underlying snow, so be extra cautious in lee terrain and convex rolls.
New snow and wind are forming fresh storm slabs. Storm slabs are most likely to be reactive in wind loaded features and where the new snow sits over surface hoar or a crust.
20 to 70 cm of snow sits over a facet-crust weak layer combination that is possible to human trigger. This problem is particularly concerning in the Duffy Lake area. Recent observations demonstrate the potential for this problem to be triggered remotely and propagate far and wide. It can be found on all aspects at treeline and is most reactive at this elevation band but can be  found above and below.
p to 10 cm of new snow and strong wind will build new and reactive wind slabs at upper elevations. They could be poorly bonded to the underlying snow surfaces, like surface hoar and crusts. Be extra cautious in leeward terrain and convex rolls.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b7b7u","text":"A hit of sunshine Friday may trigger loose-dry sloughing from steeper terrain features.
5-20 cm of snow accompanied by strong winds and warmer temperatures have formed reactive wind slabs. They will likely be touchier on leeward slopes with deeper, wind-loaded conditions, especially where they sit on surface hoar or crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"aei26","text":"A hit of sunshine Friday may trigger loose-dry sloughing from steeper terrain features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4qqs4","text":"
Strong southwest wind is potentially increasing the reactivity of storm slabs in lee features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":81,"length":3,"key":0}],"data":{}},{"key":"6qvqe","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7i006","text":"Freezing levels are variable over the region, and could depend on the intensity of the storm, so be ready for the snow/rain conditions to vary as you change elevations, and as the day progresses.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9tsm4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"45mua","text":"50-100 cm below the snow surface, Faceting from the prolonged cold temperatures may increase the chance of a storm slab in motion stepping down to the previous storm interface.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":34,"length":8,"key":1},{"offset":130,"length":13,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#leeward"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#faceted-snow"}},"2":{"type":"
The recent storm snow is expected to remain reactive to human triggering in wind exposed terrain at higher elevations.
New snow and wind are forming fresh slabs. They are most likely to be reactive in wind loaded features and where the new snow sits over surface hoar or a crust.  In the north of the region near Revelstoke where snowfall amounts are higher, a more widespread storm slab problem may exist.
New snow and wind are forming fresh storm slabs. Storm slabs are most likely to be reactive in wind loaded features and where the new snow sits over surface hoar or a crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fnlk5","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bnn2a","text":"At low elevations where precipitation falls as rain, the likelihood of loose wet avalanches will increase as rain soaks the snowpack.
New snow and wind are forming fresh, reactive storm slabs. Storm slabs are most likely to be reactive in wind loaded features and where the new snow sits over surface hoar or a crust.
resh and soft slabs will develop with the incoming warm and windy storm. Wind slab avalanches are possible at upper elevations, where wind blows dry snow into unstable slabs. While these slabs may be thin, they could be poorly bonded to the underlying snow, like a surface hoar/crust combo, so be extra cautious in lee terrain and convex rolls.
ontinued snow transport has developed hard wind slabs, which are likely confined to shady alpine areas where dry snow still exists. While these slabs may be thin, they could be poorly bonded to the underlying snow, so be extra cautious in lee terrain and convex rolls.
Strong winds will continue to transport the recent storm snow, which overlies a layer of buried surface hoar, and in some areas a thin crust. Due to the weak layer below, slabs reactivity may persist where the snow surface remains dry and crust-free at higher elevations. Wind slabs are most likely to be reactive in lee and cross loaded features.
Exposed slopes at higher elevations will continue to see effects from the incoming winds. Lingering and new wind slabs could remain reactive in open areas. While these slabs may be thin, they could be poorly bonded to the underlying snow, so be extra cautious in lee terrain and convex rolls.
Storm slabs will develop throughout the day with new snow and wind. Be particularly careful around wind loaded ridgelines and cross loaded features mid slope.
Wind slabs from new snow and strong southwest winds will develop throughout the day. Take care around wind loaded ridgelines and cross loaded features mid slope.
With heavy precipitations and warm temperatures during the last week, and more wet snow and rain to come, cornices may have become heavy and fragile - take care on and under ridge lines.
Strong southwest wind is potentially increasing the reactivity of storm slabs in lee features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":81,"length":3,"key":0}],"data":{}},{"key":"6q5dp","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f6fik","text":"Steep solar aspects in the alpine and at treeline may be more prone to avalanche as the sun hits the storm snow for the first time.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9tsm4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"45mua","text":"50-100 cm below the snow surface, Faceting from the prolonged cold temperatures may increase the chance of a storm slab in motion stepping down to the previous storm interface.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":34,"length":8,"key":1},{"offset":130,"length":13,"key":2}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#leeward"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#faceted-snow"}},"2":{"type":"
Earlier in the week, 10-25 cm of new snow fell with strong southwest wind created hard wind slabs in lee terrain features. These slabs may be stubborn to human triggering but have the potential to step down to deeper buried weak layers creating large avalanches.
10-20 cm of recent storm snow still needs time to bond to the rest of the snowpack.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9h5m4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4j61o","text":"Steep solar aspects in the alpine and at treeline may be more prone to avalanche as the sun hits the storm snow for the first time.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1lcpj","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bnhue","text":"Recent wind has been in the moderate to strong range, mostly from the southwest. These winds formed reactive windslabs that are now buried by more storm snow.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"efebi","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1t33r","text":"Signs of reactive windslab may now be harder to spot, so use extra caution around ridge tops and convex rolls. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":82,"length":10,"key":0},{"offset":97,"length":12,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/glossary#ridgetop"}},"1":{"
Wind slabs may form Friday with strong forecast wind and recent storm snow. They will likely have a poor bond to the crusty snow surfaces.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"49m2f","text":"Dry loose sloughing may be seen from steeper slopes and terrain features.
Moderate to strong southeast through southwest winds have formed wind slabs in exposed terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7td6u","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3ps0g","text":"Right now, the pockets of windslab could be small, but if you are finding a frozen crust at low elevations, a windslab that formed on top may be more reactive, and a small avalanche could take you for a longer ride down the slope, and over other hazards. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5aj72","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"al9d7","text":"Always consider which direction an avalanche could carry you, and have a safe escape route in mind.
Recent winds have formed slabs in exposed high elevation terrain. Wind slabs have been most reactive where they overlie a thin crust. Expect these lingering wind slabs to remain reactive to human triggering on steep, convex and/or unsupported terrain features.
The early December crust can be found 80-150 cm deep. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8fc1d","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1a1ut","text":"Thin rocky start zones are the most likely place to trigger this layer. Also, daytime warming, solar radiation, cornice fall, and step-downs from smaller avalanches could increase the chance of an avalanche on this layer.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cak5i","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8elp7","text":"This deep persistent slab problem has been less active recently, but we have been reminded multiple times in the last month that this layer could remain a concern all winter.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":4,"length":21,"key":0}],"data":{}},{"key":"ark21","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"28n9k","text":"The three most recent avalanches on this layer were reported on January 20th. They occured on large alpine features below rock faces. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","m
Snowpack tests and a handful of large avalanches over the past week suggest buried weak layers in the top 40-70 cm of the snowpack could produce avalanches. A noticeable trend is these avalanches have occurred in wind-affected terrain. Be careful with your terrain selection and be extra cautious around big slopes and steep convexities.
As snowfall begins with strong winds, small pockets of wind slab may begin to form around ridgelines. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7sv1u","text":"These slabs will sit on a smooth and slippery crust. On wind sheltered and shaded slopes, weak surface hoar crystals may be present above the crust - increasing reactivity of the wind slabs.
Expect the bond between storm snow and the smooth crust below to be poor. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"1iu85","text":"Be extra cautious in sheltered areas at treeline and below where surface hoar may be prevalent and increase likelihood of triggering.
New wind slabs will likely be found near ridge crests at higher elevations on northerly aspects.
Rider triggerable wind slabs can be found in exposed treeline and alpine features on North and east aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4qvo","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9tmp4","text":"In deeper snowpack areas on the west side of the forecast region storm slabs may form at treeline and above. Storm slabs produce up to size 2 avalanches.
The incoming storm will likely form new wind slabs that will not bond well to the crust that covers much of the terrain. Strong winds could mean that wind slab could be found further down slope then expected.
The early December crust can be found 90-160 cm deep. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eqmq1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"eaqbk","text":"This deep layer has been less active recently, but we have been reminded multiple times in the last month that this layer could remain a concern all winter.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"64gov","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"85rn5","text":"Thin rocky start zones are the most likely place to trigger this layer. Also, daytime warming, solar radiation, cornice fall, and step-downs from smaller avalanches could increase the chance of an avalanche on this layer.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fvk0q","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4o8j5","text":"Details about the two most recent rider triggered avalanches on this layer can be found here and here. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":88,"length":4,"key":0},{"offset":97,"length":4,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avalanche.ca/mountain-information-network/submissions/146a2ee1-7bff-11ec-90dd-32fa2618e4c1"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https
As the storm builds through Thursday night and Friday new touchy wind slabs will form on northerly aspects. These wind slabs will overlie old hard slabs and wind effected surfaces. Strong winds will mean that wind slab could form further down slope then expected.
It's possible to trigger avalanches on a 30-50 cm deep surface hoar layer that has recently been reactive near Terrace and Stewart. Most avalanche activity has been at treeline elevations, but we are still uncertain about the spatial distribution of this problem.
Wind slabs may remain reactive to human triggering in exposed terrain at higher elevations. Ongoing periods of strong wind have continued to add to these slabs where there is still loose snow available for transport. Expect them to be most reactive in steep, unsupported terrain features or places where the slab overlies a lingering weak layer.
Strong southwest winds will continue to build wind slabs where loose snow is available for transport. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"db98n","text":"These isolated pockets of at higher elevations may be reactive to human triggers in lee terrain near ridge crest or in extreme terrain.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3002c","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"7quvj","text":"Keep up good travel habits when moving through avalanche terrain, even when danger is rated as low. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":13,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK"
Sustained strong southerly wind will form unstable wind slabs in open terrain, especially along ridgetops. Expect to find a combination of fresh soft wind slabs and old hard wind slabs.
Strong to extreme winds are forecasted. Expect to find more reactive depositions in  open terrain and steep, convex features. Cornices may be extra touchy and fail naturally with solar input or daytime heating.
Warm temperatures and strong sun weaken large overhanging cornices. Stay well back of them when travelling on ridges and avoid slopes exposed to overhead cornice hazard.
Sustained winds are transporting the recent dry snow and forming fresh slabs on most exposed features. Recent slabs have been most reactive where they overlie a thin crust. Steep, convex and unsupported features will be more prone to human triggering.
A handful of large avalanches the past few days suggest buried weak layers in the top 70 cm of the snowpack could still produce avalanches. A noticeable trend is these avalanches have occurred in wind-affected terrain. Be careful with your terrain selection and be extra cautious around big slopes and steep convexities.
The more the surface crust breaks down the more likely wet loose avalanches will become on steep, sun exposed slopes.
Recent wind slabs have been reactive where it overlies surface hoar. Along with suspect layers in the upper snowpack, expect to find lingering wind slabs on wind-affected slopes at higher elevations, and anywhere a slab forms over crust or surface hoar layers.
Recent winds have varied in direction, expect wind slab on all aspects. These isolated pockets of wind slab at higher elevations may remain reactive to human triggers in immediate lee terrain near ridge crest or in extreme terrain.
Recent strong winds have formed slabs in exposed high elevation terrain. Wind slabs have been most reactive where they overlie a thin crust. Expect these lingering wind slabs to remain reactive to human triggering on steep, convex and/or unsupported terrain features. Continued slab development is possible with the ongoing strong winds where there is still loose surface snow available for wind transport.
The early December crust can be found 140-200 cm deep. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bjq9c","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3qfrp","text":"This deep persistent slab problem has been less active recently, but we have been reminded multiple times in the last month that this layer could remain a concern all winter.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":4,"length":21,"key":0}],"data":{}},{"key":"cd8b4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4phdi","text":"Shallow rocky start zones are the most likely place to trigger this layer. Also, daytime warming, solar radiation, cornice fall, and step-downs from smaller avalanches could increase the chance of an avalanche on this layer.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":0,"length":25,"key":1}],"data":{}},{"key":"5e0p2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avysavvy.avalanche.ca/en-ca/deep-persistent-slabs"}},"1":{"type":"LINK"
p to 10 cm of recent snow and coninued strong wind has formed wind slabs that remain reactive to rider traffic. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bf916","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"61jpk","text":"Slabs may be more reactive where they sit on surface hoar or crusts.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"b4m8t","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"f253c","text":"Be extra cautious at ridge crests and on convex rolls. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":21,"length":12,"key":0},{"offset":41,"length":6,"key":1}],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#ridgetop"}},"1":{"type
Extra caution is necessary around steep south facing slopes when the sun is strong.
Loading from recent moderate winds have formed isolated wind slabs in the alpine. These may remain reactive to human triggers in immediate lees near ridge crest or in extreme terrain. Check for wind slab on all aspects as winds have varied in direction.
It's possible to trigger an avalanche on a 30-50 cm deep surface hoar layer that has recently been reactive at treeline elevations near Terrace. We are uncertain about the distribution of this layer.
These isolated pockets of wind slab at higher elevations may remain reactive to human triggers in lee terrain near ridge crest or in extreme terrain. Recent winds have varied in direction, expect wind slabs on all aspects. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"5loa4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3e4ai","text":"As avalanche danger decreases, keep up the good travel habits when moving through avalanche terrain. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":48,"length":13,"key":0}],"data":{}}],"entityMap":{"0":{"type":"LINK"
Wind will continue to build fresh slabs where it finds loose snow. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"cstpd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2jjl","text":"Expect to find more reactive depositions in open terrain and steep, convex features.
ast week's storm snow has been redistributed by moderate to strong winds from the northwest through southeast. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"erim2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"9oh6e","text":"Expect these windslabs to be more reactive where they are sitting on top of a crust.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"binkc","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bgelg","text":"Be cautious at ridge crests, on convex rolls, and in cross-loaded features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":15,"length":12,"key":0},{"offset":32,"length":6,"key":1},{"offset":53,"length":12,"key":2}],"data":{}},{"key":"a6jv1","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#ridgetop"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#convex-slope"}},"2":{"type"
Wind will continue to build fresh slabs where it finds loose snow. Recent wind slabs have been most reactive where they overlie a thin crust.
Strong and steady wind will continue to stiffen recent slabs and build fresh ones further down slope where it finds loose snow. Wind slabs have been most reactive where they overlie a thin crust. Lingering hard wind slabs can still be triggered on steep, convex and unsupported features.
As the storm continues throughout the day on Friday and Saturday new reactive wind slabs will form on northerly aspects. These wind slabs will overlie old hard slabs and wind effected surfaces. Strong winds will mean that wind slab could form further down slope then expected. The largest and most sensitive wind slabs will be found at White Pass.
Wind slabs may remain reactive on Sunday, especially on shady aspects and where they overlie a crust. Cornices will also continue to weaken with warming through the weekend.
Last week 30 to 50 cm of new snow fell with warm temperatures, creating a denser slab above a weak layer of surface hoar which sits on a hard melt-freeze crust below 1300m. Below ~1000m, rain on snow has probably destroyed this layer of surface hoar and formed a crust on the surface. The most suspect areas would be sheltered, open areas near treeline.
Wind will continue to build fresh slabs where it finds loose snow. Recent wind slabs have been most reactive where they overlie a thin crust. Hard and stubborn slabs can still be triggered on steep, convex and unsupported features.
Strong and steady wind will continue to stiffen recent slabs and build fresh ones further down slope where it finds loose snow. Wind slabs have been most reactive where they overlie a thin crust. Steep, convex and unsupported slopes are the features of concerns for triggering wind slabs.
30 to 70 cm of snow sits over a facet-crust weak layer combination that is possible to human trigger. Recent observations demonstrate the potential for this problem to be triggered remotely and propagate far and wide. It is most reactive between 1800 and 2000m but can be found above and below this elevation band. Avoid avalanche terrain at this elevation and be aware of slopes above that could be remotely triggered.
Recent strong winds from the SW through NW have formed reactive wind slabs in exposed terrain at higher elevations. Ongoing wind on Monday will continue to develop these wind slabs where there is still loose surface snow available for transport.
Last week 10-25 cm of new snow fell with strong southwest wind creating hard wind slabs in lee terrain features. These slabs may be stubborn to human triggering but have the potential to step down to deeper buried weak layers creating large avalanches.
Last week's storm snow has been redistributed by variable winds into wind slabs. They could have a poor bond to the crusty snow surfaces below. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"dpdqo","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"i1jl","text":"Be cautious at ridge crests, on convex rolls, and in cross-loaded features. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":15,"length":12,"key":0},{"offset":32,"length":6,"key":1},{"offset":53,"length":12,"key":2}],"data":{}},{"key":"6gfq","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"6csqr","text":"Wind slab avalanches could step down and trigger the deeper persistent slab.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"49m2f","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#ridgetop"}},"1":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#convex-slope"}},"2":{"type"
Up to 20 cm of recent snow accompanied by strong winds and warmer temperatures formed wind slabs. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"djahs","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8t1do","text":"These wind slabs remain reactive to rider traffic. Expect them to be most reactive where they sit on top of a crust or a surface hoar layer. There are a few of these layers that vary in depth and distribution across the region.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"c4p91","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"8kkpf","text":"Be cautious at ridge crests and on convex rolls. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":15,"length":12,"key":0},{"offset":35,"length":6,"key":1}],"data":{}},{"key":"aei26","text":" ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4qqs4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://www.avalanche.ca/glossary#ridgetop"}},"1":{"type
Wet loose avalanches will become increasingly likely with warm temperatures this weekend. Extra caution will be required around steep south facing slopes when the sun is strong.
The warming and sun are not expected to have a major impact on the previously rain soaked snowpack but surficial loose wet avalanches may become possible from steep, sun exposed slopes as the warming persists. The more the surface crust breaks down the more likely wet loose avalanches will become.
In the White Pass area, up to 40 cm of new snow has been redistributed by strong southerly winds into wind slabs in lee areas at all elevations. The strong winds could mean that wind slab is found further down slope then you might expect.
The early December crust can be found 100-270 cm deep.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"141cd","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"2q601","text":"This deep persistent slab problem has been less active over the weekend, but we have been reminded multiple times in the last month that this layer could remain a concern all winter.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":4,"length":21,"key":0}],"data":{}},{"key":"8duuh","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"fgkhi","text":"Thin rocky start zones are the most likely place to trigger this layer. Also, daytime warming, solar radiation, cornice fall, and step-downs from smaller avalanches could increase the chance of an avalanche on this layer.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"15i6c","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","m
The early December crust can be found 140-200 cm deep. ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"bjq9c","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"3qfrp","text":"This deep persistent slab problem has been less active over the weekend, but we have been reminded multiple times in the last month that this layer could remain a concern all winter.","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":4,"length":21,"key":0}],"data":{}},{"key":"cd8b4","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}},{"key":"4phdi","text":"Shallow rocky start zones are the most likely place to trigger this layer. Also, daytime warming, solar radiation, cornice fall, and step-downs from smaller avalanches could increase the chance of an avalanche on this layer.  ","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[{"offset":0,"length":25,"key":1}],"data":{}},{"key":"5e0p2","text":"","type":"unstyled","depth":0,"inlineStyleRanges":[],"entityRanges":[],"data":{}}],"entityMap":{"0":{"type":"LINK","mutability":"MUTABLE","data":{"url":"https://avysavvy.avalanche.ca/en-ca/deep-persistent-slabs"}},"1":{"type":"LINK"
Strong wind will likely form unstable slabs on certain lee terrain features, especially along ridgetops. Also, hard wind slabs that formed during last week's storm may still be possible to trigger.
While the overnight freeze after a big warmup should resolve most avalanche problems, it could still be possible to trigger an avalanche on a 30-50 cm deep surface hoar layer that has recently been reactive at treeline elevations near Terrace.
Expect to find lingering wind slabs on wind-affected slopes at higher elevations, and anywhere a slab forms over a crust or surface hoar layers. Wind slabs are more prone to be triggered on steep, convex and unsupported slopes, especially on lee features.