A deeply buried weak layer can still be triggered in some places, creating very large avalanches.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches.
A deeply buried weak layer remains sensitive to human triggering, which can result very large avalanches.
A buried weak layer of surface hoar remains a concern, especially around Golden where it has recently created some very large avalanches.
The deeply buried persistent weak layer of surface hoar was reactive during the last wet storm. It has not cooled off much, and more warm wet weather is forecast. Uncertainty with this layer requires conservative terrain selection.
There is a lot of uncertainty with the distribution and likelihood of triggering this layer. Conservative terrain selection is required when uncertainty is high.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches.
A deeply buried weak layer can still be triggered in some places, creating very large avalanches.
A deeply buried weak layer remains sensitive to human triggering, which can result very large avalanches.
There is a lot of uncertainty with the distribution and likelihood of triggering this layer. Conservative terrain selection is required when uncertainty is high.
A buried weak layer of surface hoar remains a concern, especially around Golden where it has recently created some very large avalanches.
Persistent slab avalanches are more likely in the north of the region where they continue to release naturally. The forecast storm load may increase the likelihood of triggering in all areas of the region.
Given the weak layers in the snow, there is still a possibility for a larger release deep in the snowpack. Potential triggers would be from shallow rocky start zones, or possibly from a small avalanche stepping down to lower layers.
A buried layer of surface hoar around 60 cm below the surface is cause for concern, especially on open unsupported, or convex slopes.
Buried weak layers are still reactive in the snowpack, especially in the far north of region, and have the potential to produce very large avalanches. Thin spot triggering, cornice releases, and smaller avalanches all have the potential to step down.
Buried weak layers are still reactive in the snowpack, especially in the far north of region, and have the potential to produce very large avalanches. Thin spot triggering, cornice releases, and smaller avalanches all have the potential to step down.
A weak mix of surface hoar and facets remain a concern, especially in the Dogtooth Range in the north of the region. A cautious approach is required in this area, as this layer may still surprise with nasty consequences.
A weak mix of surface hoar and facets remain a concern, especially in the Dogtooth Range in the north of the region. A cautious approach is required in this area, as this layer may still surprise with nasty consequences.
Buried weak layers are still reactive in the snowpack, especially in the far north of region, and have the potential to produce very large avalanches. Thin spot triggering, cornice releases, and smaller avalanches all have the potential to step down.
A buried crust and surface hoar layer lie up to 100cm below the surface. Although you may not see this weakness on every slope, avalanches at this interface may be surprisingly large. I would maintain respect for this layer for the foreseeable future
Persistent slab avalanches may be triggered down 60-90 cm below the storm snow that arrived this week. This problem is more likely where there is a weak layer of surface hoar at the crust interface. Wide fracture propagations are likely.
This is the problem that we previously called a storm slab. The February 10th surface hoar continues to allow for long fracture propagations resulting in very large avalanches. Strong solar may increase likelihood of triggering.
A buried crust and surface hoar layer lies up to 130cm below the surface in most parts of the region, although it may not be found on every slope, an avalanche at this interface may quite large. Consider this layer for the foreseeable future.
The February 10th surface hoar continues to allow for long fracture propagations resulting in very large avalanches. Strong solar may increase likelihood of triggering.
Persistent slab avalanches may be triggered down 60-90 cm below the recent storm snow. This problem is more likely where there is a weak layer of surface hoar at the crust interface. Wide fracture propagations are likely.
It may be possible to trigger weaknesses within the recent storm snow or at the crust interface at the bottom. be particularly cautious in wind-loaded and cross-loaded terrain near ridge crests.
A crust and surface hoar layer now lies buried up to 130cm below the surface in many parts of the region, it may not be found on every slope, but an avalanche at this interface could be quite large. Keep this layer on the radar for future reference.
&nbsp; A weak layer of surface hoar and/or crust down 70-90cm is susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or crust down 70-90cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or crust down 70-90cm is susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or a crust down 70-90cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or crust down 70-90cm is susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or crust down 70-90cm is susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or a crust down 60-100cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or a crust down 60-100cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or crust down 40-70cm is susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or a crust down 70-90cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. Wide fracture propagations are likely.
A weak layer of surface hoar and/or a crust down 50-90cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. It may be still be possible to directly trigger this layer during the heat of the day.
="s_3FE45715">A weak layer of surface hoar and/or a crust down 60-100cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. It may be still be possible to directly trigger this layer during the heat of the day.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A weak layer of surface hoar and/or a crust down 50-90cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. It may be still be possible to directly trigger this layer during the heat of the day.</span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A weak layer of surface hoar and/or a crust down 40-70cm remains susceptible to large triggers such as cornice falls or smaller avalanches stepping down. It may be still be possible to directly trigger this layer during the heat of the day.</span><span class="s_AA239
The likelihood of triggering the weak crust/surface hoar layer down 50-90cm is decreasing with colder temperatures. In the Monashees, a patchy layer of surface hoar down 30-40cm may still be reactive to skier triggering.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The likelihood of triggering the weak crust/surface hoar layer down 50-90cm is decreasing with colder temperatures. In the Monashees, a patchy layer of surface hoar down 30-40cm may still be reactive to skier triggering.</span><span class="s_AA239
The likelihood of triggering the weak crust/surface hoar layer down 40-70cm is decreasing with colder temperatures but may still be triggered with heavy triggers like cornice falls or smaller avalanches stepping down.
Low likelihood, high consequence.
This is still a layer to keep in mind, as an avalanche on this layer could be large and destructive.
The likelihood of triggering the weak crust/surface hoar layer down 40-70cm is decreasing with colder temperatures but may still be triggered with heavy triggers like cornice falls or smaller avalanches stepping down.
The likelihood of triggering the weak crust/surface hoar layer down 50-90cm is decreasing with colder temperatures. In the Monashees, a patchy layer of surface hoar down 30-40cm may still be reactive to skier triggering.
The likelihood of triggering the weak crust/surface hoar layer down 50-90cm is decreasing with cooler temperatures. In the Monashees, a patchy layer of surface hoar down 30-40cm may still be reactive to skier triggering.
Smaller sluffs or wind slabs, cornice falls, or a ride/group of riders in the wrong spot may be enough load to trigger a crust and/or surface hoar layer that is buried an average of 60 cm deep. 
This is still a layer to keep in mind, as an avalanche on this layer could be large and destructive.
This is still a layer to keep in mind, as an avalanche on this layer could be large and destructive.
Smaller storm slab avalanches may step down and awaken this sleeping dragon.
Smaller storm slab avalanches may step down and awaken this sleeping dragon in areas where mid February surface hoar layer is still present.
An old weak layer down 80-100cm has been dormant recently but could wake up with substantial warming, sun, or new load. Heavy triggers such as cornice falls or smaller avalanches have the potential to step down to this layer.
An old weak layer down 80-100cm has been dormant recently but could wake up with substantial warming, sun, or new load. Heavy triggers such as cornice falls or smaller avalanches have the potential to step down to this layer.
An old weak layer down 80-100cm has been dormant recently but could wake up this weekend with substantial warming and storm loading. Heavy triggers such as cornice falls or smaller avalanches in motion have the potential to step down to this layer.
There are two buried surface hoar layers of concern. The February 27th layer is down 40-60 cm and the February 10th layer is generally 15-30 cm deeper in the snowpack. Buried surface hoar may be associated with a crust that allows for wide fractures.
Buried surface hoar and/or a crust may be down 40-60 cm and easy to trigger with light additional loads or from travelling on adjacent terrain.
An old weak layer down 80-100cm has been dormant recently but could wake up this weekend with substantial warming and storm loading. High freezing levels and rain may result in persistent weak layers &quot;waking up.&quot; </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Persistent weak layers of buried surface hoar may continue to be triggered by large loads like cornice falls or a large group of sledders re-grouping. Avoid un-supported terrain and shallow wind effected slopes adjacent to large alpine slopes.
The persistent weak layer of surface hoar may continue to be triggered by large loads like re-grouping or cornice falls.
Persistent weaknesses lie buried in the top 90cm of the snowpack. Although these layers are slowly becoming less likely to trigger, they have the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 90cm below the surface. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 90cm below the surface. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A persistent weak layer continues to produce intermittent large avalanches. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.</span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_3FE45715">A persistent weak layer continues to produce intermittent large avalanches. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.</span><span class="s_AA239
A persistent weak layer continues to produce intermittent large avalanches. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 90cm below the surface. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weak layer continues to produce intermittent large avalanches. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 100cm below the surface. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 110cm below the surface. Although this layer is slowly becoming less likely to trigger, it has the potential to surprise with nasty consequences. I'd continue riding with a conservative mind set.
A persistent weakness lies buried up to 100cm below the surface. Although this layer is slowly becoming less likely to trigger, it continues to catch people by surprise. I'd continue riding with a conservative mind set.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.</span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.</span><span class="s_AA239
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</style><p class="p_CC664AAA"><span class="s_3FE45715"> The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.</span><span class="s_AA239
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
Smaller storm slab avalanches may step down and awaken this sleeping dragon in areas where mid February surface hoar layer is still present.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.</span><span class="s_AA239
Smaller storm slab avalanches may step down and awaken this sleeping dragon in areas where mid February surface hoar layer is still present.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and I'd be increasingly cautious as solar radiation comes into play.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and be increasingly cautious as freezing levels increase.</span><span class="s_AA239
The late February layer is becoming less likely to trigger, but it continues to surprise riders with large avalanches. I'd aim for well-supported slopes without convexities, and be increasingly cautious as freezing levels increase.
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</style><p class="p_CC664AAA"><span class="s_3FE45715">Small loose wet avalanches and failing cornices triggering slab avalanches on the late February layer would be on the forefront of my mind as I travel through the mountains this weekend.</span><span class="s_AA239
Small loose wet avalanches and failing cornices triggering slab avalanches on the late February layer would be on the forefront of my mind as I travel through the mountains this weekend.
Small loose wet avalanches and failing cornices triggering slab avalanches on the late February layer would be on the forefront of my mind as I travel through the mountains this weekend.
Small loose wet avalanches and failing cornices triggering slab avalanches on the late February layer would be on the forefront of my mind as I travel through the mountains this weekend.
Prolonged warming has reawakened deeply buried weak layers, as well as causing glide slabs to release at the ground. The result is some surprisingly large avalanches.
Prolonged warming may cause deeply buried persistent weak layers to wake up, causing very large avalanches. Glide slabs are also possible.
Prolonged warming has reawakened deeply buried weak layers, as well as causing glide slabs to release at the ground. The result has been some surprisingly large avalanches.
="s_17AE1194">Prolonged warming has reawakened deeply buried weak layers, as well as causing glide slabs to release at the ground. The result has been some surprisingly large avalanches.
Rapid warming commonly awakens dormant weak layers deep in the snowpack.
Rapid warming commonly awakens dormant weak layers deep in the snowpack.
Rapid warming commonly awakens dormant weak layers deep in the snowpack.
Rapid warming commonly awakens dormant weak layers deep in the snowpack.
In Kootenay and Yoho there is a buried surface hoar and/or crust layer down about 50 cm. This layer may be triggered on steep terrain features where the wind may have stiffened up the overlying snow into a slab.
In Kootenay and Yoho there is a buried surface hoar and/or crust layer down about 50cm. Though little activity has been observed on this layer, it is still producing sudden planar results in tests and should be monitored.
In shallower areas east of the divide deep slabs have been observed failing on the lower facetted snowpack
In shallow snowpack areas, especially East of the divide, the storm snow and wind slabs overlie a weak faceted mid-pack.&nbsp; Avalanches triggered in this region may steep down to ground.
Touchy slabs are building and stiffening over a combination of facets, surface hoar, and sun crust on solar aspects. As the stiffness of the slabs increases, so too will the distance they propagate.
Touchy slabs continue to build and stiffen over a combination of facets, surface hoar, and sun crust on solar aspects. Large propagations (upto 300 m) and several skier remote triggered avalanches to size 2&nbsp; were observed today in KNP.
This layer is still touchy. Avalanche control was producing results on this layer today on the Sunshine Road and 93S.
This layer is still touchy. Expect it to be most reactive on south aspects near tree-line. Typically, it will be about 40cm thick.
The recent storm snow is settling and bonding to itself. There is still a poor bond at the storm snow interface (facets and surface hoar) down about 30-40 cm.
The storm snow is starting to settle into a cohesive slab. As the slab stiffens, the weak layer will get harder to trigger, but the consequences will be greater. The nature and distribution of the weak layer means it will be with us for a while.
The recent storm snow is settling but a poor bond still exists on the storm snow interface. Natural activity has decreased but it is still possible for skiers to trigger this layer.
A poor bond still exists between the storm snow and the Feb 10 interface. This interface is reactive to skier triggering. (see avalanche details)
There is still a poor bond between the storm snow and the Feb.10 layer of facets and surface hoar. This interface is still very susceptible to human triggering.
The storm snow interface down 40-70 cm still producing easy to moderate results. Natural cycle is over but still possible for skiers to trigger this layer.
The natural cycle is over but the Feb 10th interface down 30-70 cm is still producing easy to moderate results, with lots of whumphing and some skier triggered avalanches. Stick to moderate angled, well supported terrain until things improve.
The natural cycle is over but the Feb 10th interface down 25-60 cm is still producing easy to moderate results, with lots of whumphing and some recent skier triggered avalanches. Stick to moderate angled, well supported terrain until things improve.
Snowpack tests on this layer today produced easy results. Despite the easy results no avalanche activity was noted. This is a layer to approach cautiously over the next few days.
The Feb.10 interface of weaker crystals is slow to gain strength. Slab properties above this layer are becoming stiffer, and human triggering is very possible. These seem to be the most touchy on solar aspects where there is a buried suncrust.
The Feb 10th layer continues to produce sudden collapse test results in many areas. The cold temperatures will tighten things up a little and begin to weaken the slab over this layer but it is still a concern in many of the areas in the park.
The Feb. 10th layer is still a prominent feature in the snowpack producing variable results. We are seeing less activity over the past few days, but is still a concern in many regions of the forecast area.
This layer is slowly gaining strength however test results continue to show that wide propagations are possible in some areas which would lead to severe consequences. Sudden collapse results and low scores in propagation saw tests are still common.
This layer is slowly gaining strength however test results continue to show that wide propagations are possible in some areas which would lead to severe consequences. Sudden collapse results and low scores in propagation saw tests are still common.
This layer is gaining strength but tests and whumphing still show there is potential for wide propagation in some areas.&nbsp; Any avalanche on this layer could lead to severe consequences.
Test results on the Feb 10 layer generally in the moderate range but still show lots of potential for good propagation if triggered. Recent storm snow may be enough to activate this layer (see avalanche details). Lots of uncertainly with this layer
Test results on the Feb10 layer mainly in the moderate range with potential for wide propagations if triggered. The recent snow has been shown to overload this layer in the Kootenay,Sunshine, Yoho areas, and less so in the Louise region and Hwy. 93N.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> This layer is especially touchy around Sunshine and in Kootenay on steep features at treeline and below. There have been several </span><a href="https://www.facebook.com/photo.php?fbid=635006586549334&amp;set=a.589955951054398.1073741839.145133538869977&amp;type=1&amp;theater" target="_blank"><span class="s_9255B882">skier triggered avalanches</span></a><span class="s_AA239A9B"> to size 2 in past 36 hours and </span><a href="https://www.facebook.com/photo.php?fbid=635006599882666&amp;set=a.589955951054398.1073741839.145133538869977&amp;type=1&amp;theater" target="_blank"><span class="s_9255B882">explosive triggered avalanches</span></a><span class="s_AA239A9B"> to size 3 today.
Dense snow is overloading the Feb.10th interface and will continue through Sunday. 
The Feb 10th layer continues to be reactive in many areas especially at tree line. Avoid any steep terrain until this has a chance to bond.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> The recent snow has overloaded this layer. Although natural activity is tapering, this layer remains </span><span class="s_2823317B">VERY</span><span class="s_AA239A9B"> touchy as seen by two very </span><a href="https://www.facebook.com/photo.php?fbid=636202979763028&amp;set=a.589955951054398.1073741839.145133538869977&amp;type=1&amp;theater" target="_blank"><span class="s_9255B882">close calls </span></a><span class="s_AA239A9B">today.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> Natural avalanche cycle is over but conditions are still very touchy and ripe for skier triggering. Any avalanche triggered has the potential to be very</span><a href="https://www.facebook.com/media/set/?set=a.636554726394520.1073741856.145133538869977&amp;type=1#!/photo.php?fbid=636554863061173&amp;set=a.636554726394520.1073741856.145133538869977&amp;type=3&amp;theater" target="_blank"><span class="s_9255B882"> large.</span></a><span class="s_AA239
Natural activity has slowed down on this layer, but we have seen large avalanches over the past few days with the new storm snow overloading the Feb.10th interface. In some cases we have seen this step down to the basal facets in thin snowpack areas.
In thinner snowpack areas, this layer is still touchy as shown by numerous large whumphs and sudden collapse results today. It is especially reactive on solar aspects where there is a buried sun crust and may be less reactive in deeper snowpacks
This layer is still touchy in thin snowpack areas (especially where there is a buried sun crust), and large whumps and sudden collapse results have been found. With limited observations this layer now seems less reactive in deeper snowpack areas.
With the new snow, expect the Feb 10th layer of facets, surface hoar, and some buried sun crust to &quot;wake up&quot;, especially in thin and variable snowpack areas.&nbsp;
As yesterdays avalanche indicates, the basal weaknesses are still susceptible to human triggering. Use caution in steep, shallow areas that have not previously avalanched.
The Feb 10th layer continues to produce whumphs, natural and remote avalanches and skier triggered avalanches. It is especially sensitive in thinner or cross loaded snowpack areas and places with a buried sun crust.
We are seeing less activity with this problem as the days go by. It is still touchy and what is left is a low likelihood but high consequence situation if it is triggered.
Activity on the Feb.10th of facets, surface hoar and buried suncrust is starting to taper off, and it is a lowered likelihood with large consequences scenario.  Some slides have been observed to step down to ground in thin snowpack areas.
Feb 10 shears tightening up in deep snow pack areas west of the divide. In shallower snowpack areas this interface still producing whoomphing and easy to moderate shears.
Slowly this layer is becoming less reactive, but it remains a concern. Field tests, particularly on southern aspects, confirms this. It's now down 80-120 cm and more likely triggered from thinner areas or by larger loads.
We are finding moderate to hard sudden collapse results on the Feb.10 interface. Thin and variable snowpack areas will be the easiest places to trigger this interface.
The Feb 10 layer will be touchier in the Eastern portion of the forecast area, less in the West. In addition to Feb 10, the Mar 13 layer, a suncrust on South aspects, can be found down 40-60cm. Snowpack tests on this layer produced moderate results.
The Feb 10 layer is touchier in the eastern portion of the forecast area, less in the west. In addition to Feb 10, the Mar 13 layer (suncrust on south aspects) can be found down 30-60cm. Snowpack tests on this layer have produced moderate results
The Feb 10 layer is touchier in the eastern portion of the forecast area, less in the west. In addition to Feb 10, the Mar 13 layer (suncrust on south aspects) can be found down 30-60cm. No shears were found on Mt Field today during snowpack tests.
There are two layers of concern in the upper meter of the snowpack that continue to produce shears in isolated areas and have a high degree of uncertainty. Be very mindful of this problem in areas that have not previously avalanched.
In areas of the park with a weaker snowpack we remain concerned about the Feb 10 layer of facets and surface hoar located in the middle of the snowpack. This layer remains, and caution is advised in specific areas such as the burns in Kootenay Park.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> In areas with uneven, shallower or weaker snowpacks, we remain concerned with the Feb 10th midpack layer of crust/facets/surface hoar (Kootenay burns) and the </span><a href="https://www.facebook.com/media/set/?set=vb.145133538869977&amp;type=2#!/photo.php?v=643191412397518&amp;set=vb.145133538869977&amp;type=2&amp;theater" target="_blank"><span class="s_9255B882">basal facet layer.</span></a><span class="s_AA239A9B"> Stick to lower angled well supported terrain in these areas.
In areas with uneven, shallower or weaker snowpacks, we remain concerned with the Feb 10th midpack layer of crust/facets/surface hoar, and the basal layer. Choose conservative, well supported terrain in these areas.
Although this problem still remains, triggering still remains possible. As time goes by it will become less likely that people will be able to trigger this layer.
Several avalanches have been observed deep in the snowpack over the past 24-hours. Avoid shallow areas where the snowpack is weakest. These avalanches are very unpredictable, so choose terrain that avoids steep, rocky slopes.
This problem represents a classic low likelihood high consequence situation. Areas that have not previously avalanched will be more susceptible to triggering.
We are getting lots of large whumphs on the Dec 18th layer consisting of facets/crust. This indicates the potential for skier triggering in steep terrain. Areas where the snow over this layer has stiffened into more of a slab are of the most concern.
Perpetual whumphing of the Dec 18th layer consisting of facets/crust exists. Skier triggered surface slabs have the potential to step down to the Dec18th layer.
This is a serious weak layer down 40 cm that seems to be either crust, facets or surface hoar depending on location.&nbsp; Snowpack tests continue to be in the moderate and sudden range for this layer, indication strong potential for human triggering.
This is a serious weak layer down 40 cm that seems to be either crust, facets or surface hoar depending on location. Snowpack tests continue to be in the moderate and sudden range for this layer, indication strong potential for human triggering.
This layer is more touchy in deeper snowpack areas where it is more deeply buried (30 - 50 cm down) and at lower elevations where it is a rain crust/ surface hoar combination.
A 30-40cm soft slab sits over the Dec 3 surface hoar in many sheltered locations below 2000m. Continue to treat all steep open slopes below treeline with suspicion until you can rule out this weak layer.
A 30-40cm soft slab sits over the Dec 3 surface hoar in an elevation band between 1700 and 2150m. Continue to treat all steep open slopes below treeline with suspicion until you can rule out this weak layer.
A 30-40cm soft slab sits over the Dec 3 surface hoar in an elevation band between 1700 and 2150m. Continue to treat all steep open slopes below treeline with suspicion until you can rule out this weak layer.
A 30-40cm soft slab sits over the Dec 3 surface hoar in an elevation band between 1700 and 2150m. Continue to treat all steep open slopes below treeline with suspicion until you can rule out this weak layer.
A 30-40cm soft slab sits over the Dec 3rd surface hoar in an elevation band between 1700 and 2150m. This slab has facetted out in many areas, but watch out in areas where previous wind may have formed a denser slab above this layer.
A 30-40cm soft slab sits over the Dec 3rd surface hoar between 1700 and 2150m. This slab has facetted out in many areas, but be cautious on steep (40+degree) slopes where previous winds may have formed isolated denser slabs above.
A 30-50cm slab sits over the Dec 3 surface hoar that can be found in isolated areas between 1700 and 2150m. While this slab has facetted out in many areas, be cautious in aggressive terrain or in wind affected areas where the slab may retain strength
The slab above this layer has facetted out in many areas which has lead to a decrease in triggering however tests continue to produce significant shears. Be cautious in aggressive terrain or in wind affected areas where the slab may retain strength.
The slab above this layer has not been very reactive recently however snow pack tests continue to produce sudden shears in some areas. Dig down to identify and test this layer before committing to in steep, open or convex terrain below tree line.
The slab above this layer has not been very reactive recently. Snow pack tests produce shears in the moderate to hard range. Dig down to identify and test this layer before committing to in steep, open or convex terrain below tree line.
The slab above this layer has not been very reactive recently. Snow pack tests produce shears in the moderate to hard range. Dig down to identify and test this layer before committing to in steep, open or convex terrain below tree line.
The slab above the Dec 3 surface hoar layer has not been very reactive recently. Snow pack tests produce shears in the moderate to hard range. This is mostly a concern in areas near the divide with a deeper snowpack and more snow over the weakness.
The slab above the Dec 3 surface hoar layer has not been very reactive recently. Snow pack tests produce shears in the moderate to hard range. This is mostly a concern in areas near the divide with a deeper snowpack and more snow over the weakness.
The new snow is settling into a 15- 40 cm slab above the Jan. 6th surface hoar and facet layer. This layer is most reactive where there is a thicker slab and buried surface hoar (between 1500 and 2000m in Kootenay).
The new snow is settling into a 20-50 cm slab above the Jan. 6th surface hoar and facet layer. This layer is most reactive where there is a thicker slab and buried surface hoar (between 1500 and 2000m in Kootenay).
Close to 50 cm of settled snow now overlies the Jan 4 layer of surface hoar and facets. This layer is visible in snow profiles, and tests show moderate, sudden planar shears. Watch for this problem in open glades and slopes near and below treeline.
Close to 50 cm of settled snow now overlies the Jan 4 layer of surface hoar and facets. While crusts may hold things together below about 1900m be cautious above this where human triggering is likely and natural activity is quite possible. 
30-50 cm of settled snow overlies the Jan 6 layer of surface hoar and facets. This continues to be reactive to both human and explosive triggering with potential for failures to step down into deeper snowpack layers and result in large avalanches.
30-60 cm of settled snow overlies the Jan 6 layer of surface hoar and facets. This continues to be reactive to both human triggering with potential for failures to step down into deeper snowpack layers and result in large avalanches.
30-60 cm of snow overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it is still in the range of human triggering with potential for failures to step down into deeper layers and result in large avalanches.
30-60 cm of snow overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it is still in the range of human triggering with potential for failures to step down into deeper layers and result in large avalanches.
30-60 cm of snow overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it has become stubborn to trigger, but the potential for wide propagation remains.
An average of 30-60 cm overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it has become stubborn to trigger, but the potential for wide propagation remains.
An average of 30-60 cm overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it has become stubborn to trigger, but potential for wide propagation remains. The new snow will increase the likelihood of this.
An average of 30-60 cm overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it has become stubborn to trigger, but potential for wide propagation remains. The new snow will increase the likelihood of this.
An average of 40-80 cm overlies the Jan 6 layer of surface hoar, facets and sun crust. Test results on this layer show it has become stubborn to trigger, but potential for wide propagation remains. The new snow will increase the likelihood of this.
Expect this problem to produce avalanches on Tuesday, and avoid exposure to avalanche terrain as these will be large avalanches with potentially significant consequences.
These large avalanches have potentially significant consequences. Warm temperature coinciding with steep and shallow ares are a combination to avoid tomorrow.
Large avalanches are occurring daily right now. Best to avoid most avalanche start zones unless there is evidence of previous avalanches having occurred. Conditions are dangerous so be careful in your route selection.
Widespread natural and explosive triggered avalanche activity on this layer in the past few days. In thinner areas, avalanches are scrubbing down to ground. With the cooling temps, this should become less reactive, but is still worthy of respect.
Widespread natural &amp; explosive triggered avalanches on this layer in the past week. In thinner areas, avalanches are scrubbing down to ground. With the cooling temps, this should become less reactive, but is still a concern for skier triggering.
Numerous reports of avalanches triggered on the Jan 6 layer over the last 5 days (less reactive below treeline).  In thinner areas, isolated avalanches have been seen to scrub to ground.&nbsp; Less natural activity noted today due to cooler temperatures.
Numerous reports of avalanches triggered on the Jan 6 layer over the last 5 days (less reactive below treeline). In thinner areas, isolated avalanches have been seen to scrub to ground. Less natural activity noted today due to cooler temperatures.
50-100 cms of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last 5 days. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cms of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last 5 days show that it is active. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cms of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last 5 days show that it is active. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last week show that it is active. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last week show that it is active. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous reports of avalanches triggered on this layer over the last 24 hours show that it is active. In thinner areas, isolated avalanches have scrubbed to ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous avalanches triggered on this Saturday. In thinner areas, many of these avalanches have scrubbed through the facets to the ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous avalanches have been triggered on this layer recently. In thin snow pack areas, many of these avalanches have stepped down to the ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous avalanches have been triggered on this layer in the last week. In thin snow pack areas, some of these avalanches have stepped down to the ground.
50-100 cm of snow overlies the Jan 6th layer of surface hoar, facets and sun crust. Numerous avalanches have been triggered on this layer in the last week. In thin snow pack areas, some of these avalanches have stepped down to the ground.
4cm thick rain crust found below tree line and up to 2700ms. No new avalanches have been observed on this layer.
Recent slab formation overlies a persistent weak layer of surface hoar, facets and crusts found predominantly at treeline and below. This layer is going to become more reactive with the next pulse of snow which begins on Saturday night.
Touchy slabs have been found primarily on East facing terrain below ridge crests between 2000 and 2400m.  These slabs are sitting on a persistent weak layer of crust and facets and are stiffening up, increasing the likelihood of wide propagations.
The persistent slab interface is a combination of crusts, facets, and surface hoar overlying a solid midpack bridging weak basal facets. It will be large if triggered. Caution on steep lee treeline and subalpine aspects with variable snow depths.
This persistent weak layer consists of facets and surface hoar that were covered. It sits on a mixture of crusts and firm supportive snow. This seems to be of most concern at the Treeline and lower alpine elevations between 2000m and 2400m.
This persistent weak layer consists of facets and decomposing surface hoar under 30cm of surface snow. It sits on a mixture of crusts and firm snow. It is of most concern at treeline and subalpine zones between 2000-2400m.
The persistent slab overlies 2 main weaknesses that will not go away anytime soon. A decomposing surface hoar-surface facet layer 30cm down and thick layer of basal facets-depth hoar. Its spatial variability makes it difficult to predict.
The persistent slab is intermixed with 2 main weaknesses that will not go away anytime soon, the decomposing surface hoar-facet layer and thick layer of basal facets-depth hoar. Its spatial variability makes it difficult to predict.
The persistent slab is intermixed with 2 main weaknesses that will not go away anytime soon, the decomposing surface hoar-facet layer and thick layer of basal facets-depth hoar. Its spatial variability makes it difficult to predict.
The strong mid-pack is bridging the layer well through the forecast area. Its spatial variability over the terrain does make it difficult to predict and snowpack tests show it to be very weak. Be careful in shallow start zones.
We have seen very few avalanches from this layer in the past 2 weeks. A strong midpack , when present, prevents triggering from all but the largest loads. Where the snowpack is shallow triggering will be considerably easier.
The strong mid-pack is bridging the layer well through the forecast area. Its spatial variability over the terrain does make it difficult to predict and snowpack tests show it to be very weak. Be careful in shallow start zones.
The strong mid-pack is bridging the layer well through the forecast area. Its spatial variability over the terrain does make it difficult to predict and snowpack tests show it to be very weak. Be careful in shallow start zones.
The strong mid-pack is bridging the layer well through the forecast area. Its spatial variability over the terrain does make it difficult to predict and snowpack tests show it to be very weak. Be careful in shallow start zones.
The &quot;drought layer&quot; (Feb 10) has been sensitive in the past week, contributing to numerous large avalanches. Pay particular attention to moraines at treeline and cross-loaded features in the alpine.
The &quot;drought layer&quot; (Feb 10) has been sensitive in the past week, contributing to numerous large avalanches. Pay particular attention to moraines at treeline and cross-loaded features in the alpine.
Some small pockets of surface hoar may still be present at and below treeline.
The 1 meter of storm snow has transitioned into a persistent slab. This slab is sitting on a raincrust/surface hoar weakness.
These slabs are sitting on a surface hoar layer in sheltered areas. Triggering of these slabs is possible even in low angle terrain .
Deep soft slabs are sitting on this reactive layer. Triggering of these slabs is possible even in low angle terrain .
Forecasters are doubtful that cooler temperatures will improve this weakness in the short term.  Triggering of these slabs is possible even in low angle terrain .
Although the Dec3 layer down 60cm has not been associated with any recent avalanche activity, it is still a concern, particularly in sheltered open terrain below treeline. If you find this layer in your travels, please let us know.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Forecasters will continue to monitor the break-down of this interface cautiously.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Forecasters will continue to monitor the break-down of this interface cautiously.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 layer down 60cm has not been associated with any observed natural activity nor has it proven to be reactive to skier traffic. Further cooling temperatures and the consistently supportive mid-pack helping increase confidence in this layer.
The Dec3 interface down 50cm appears to be bonding well, but be sure to evaluate steep and committing features, particularly around treeline.
The Dec3 interface down 50cm appears to be bonding well, but be sure to evaluate steep and committing features, particularly around treeline.
The Dec3 interface down 60cm appears to be bonding well, but be sure to evaluate steep and committing features, particularly around treeline.
30 cm of storm snow from Thursday continues to build into a slab overlying a weak facetted snowpack or decomposed surface hoar layer.
Previously formed slabs now comprise the upper and mid-pack in many locations. They can rest on weak facets.
Previously formed slabs now comprise the upper and mid-pack in many locations. Natural and human triggered avalanches are possible.
45cm of storm snow from March 3 has evolved into a soft slab and melded in many locations to the midpack below. South TL aspects the new snow was found resting on a decomposing surface hoar layer on a crust about 30cm down. It tested unstable.
45cm of storm snow from March 3 has evolved into a soft slab and melded in many locations to the midpack below. South TL aspects the new snow was found resting on a decomposing surface hoar layer on a crust about 30cm down. It tested unstable.
Persistent mid-pack slab condition has been developing all season. Various wind and facet layers exist. Spatial variability exists with thick and thin snowpack areas.  </span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Persistent mid-pack slab condition continuing to surprise, and not the good kind of surprise! Like triggering an unseen overhead feature; Surprise!
A persistent weak layer down 50 to 70cm is reactive to skier triggering.  Our observations suggest the most reactive locations are steep S/SW facing slopes and open glades. Strong south winds may have created harder wind slabs at and above treeline.
A persistent weak layer down 50 to 70cm is reactive to skier triggering. Our observations suggest the most reactive locations are steep S/SW facing slopes and open glades. Strong south winds may have created harder wind slabs at and above treeline.
A cohesive slab overlies a persistent weak layer. Variable distribution and composition makes this layer difficult to predict. Tests on this layer indicate it is skier triggerable and observations indicate it is most reactive on steep S'ly aspects.
A cohesive slab overlies a persistent weak layer. Variable distribution and composition makes this layer difficult to predict. Tests on this layer indicate it is skier triggerable and observations indicate it is most reactive on steep S'ly aspects.
2 layers, down ~40 and ~80cm, exist in isolated areas (see forecast details). They have been reactive to ski cutting on steep unsupported features in Rogers Pass, and in the surrounding region caused several human triggered size 2 avalanches.
A touchy surface hoar layer is down 25-40cm. There have been human triggered avalanches on this layer daily. Avalanches are increasingly possible with new snow and rising winds today adding load, and mild temperatures making the slab more cohesive.
A touchy surface hoar layer is down 35-55cm. Human (even tree bomb) triggered avalanches have occurred daily. Avalanches are increasingly possible with new snow and rising winds today adding load, and mild temperatures making the slab more cohesive.
A touchy surface hoar layer is down ~50cm. Human (even tree bomb) triggered avalanches have occurred daily. Avalanches are increasingly possible with new snow load and mild temperatures making the slab more cohesive.
The Feb 12 PWL is becoming more reactive as it matures.&nbsp; Skier triggered and natural avalanches have been increasing on this layer, with RB scores of 2, whole block.&nbsp; It is most reactive on solar aspects between 17-1900m.
A &quot;persistent weak layer&quot; (Feb 12 SH) is now down 50-60 cm from the surface, and is sporadically reactive to skier triggering.  Wide propagations are possible, especially on sunny aspects where it sits on a sun crust, between 17-1900m.
A &quot;persistent weak layer&quot; (Feb 12 SH) is down 50-60 cm from the surface, and remains sporadically reactive to skier triggering.  Wide propagations are possible, especially on sunny aspects where it sits on a sun crust, between 17-1900m.
A weak layer is down 40-50cm. It is most likely to be skier-triggered around 17-1900m, avoid open slopes and convex rolls. On sunny aspects the weak layer can be touchy.  Natural avalanche activity will increase on this layer today with the new snow.   
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> A weak layer is down 50-70cm. It is most likely to be skier-triggered around 17-1900m, avoid open slopes and convex rolls. On sunny aspects the weak layer can be touchy. See </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://avalancheinfo.net/Parks/Glacier/Images/2013-02-23%20Sz%202%20Sc.jpg" target="_blank"><span class="s_9255B882">image</span></a><span class="s_AA239A9B"> of skier-triggered avalanche yesterday on this layer at 1700m.
A buried surface hoar layer, down 40-50cm, reactive to skier triggering particularly where it sits on a crust on steep south aspects. The overlying slab is stiffening and will produce larger propagation avalanches when triggered.
More load over the surface hoar layer buried 40-55cm. This layer is reactive to rider triggering and remote triggering. The overlying slab will continue to produce avalanches with larger propagation and more consequence for the foreseeable future.
Surface hoar layer buried 40-55cm. This layer is reactive to rider triggering and remote triggering. The overlying slab will continue to produce avalanches with larger propagation and more consequence for the foreseeable future.
Surface hoar layer buried 40-55cm. This layer is reactive to rider triggering and remote triggering and has been seen to be most reactive where the surface hoar is sitting on a sun crust or firm layer in the snowpack (bed-surface).
Surface hoar layer buried 45-60cm. This layer is reactive to rider triggering and remote triggering and has been seen to be most reactive where the surface hoar is sitting on a sun crust or firm layer in the snowpack (bed-surface).
A weak surface hoar layer is now down ~85cm. This layer has been triggered by humans; remotely from 40m away, and capable of wide propagations up to 150m. Rapid loading or other avalanches may trigger this layer and produce very large avalanches.
A weak surface hoar layer is now down ~1m. This layer has been triggered by humans; remotely from 40m away, with propagations up to 150m wide. Rapid loading and other avalanches triggered this layer yesterday producing very large avalanches.
A weak surface hoar layer is now down ~1m. This layer has caused widespread avalanches: natural's up to size 4, and size 2.5 human triggered avalanches. In areas where it hasn't already avalanched it is very reactive, and has been remotely triggered.
A weak surface hoar layer is now down ~1m. This layer has caused widespread avalanches: natural's up to size 4, and size 2.5 human triggered avalanches. In areas where it hasn't already avalanched it is very reactive, and has been remotely triggered.
A weak surface hoar layer is now down ~1m. This layer has caused widespread avalanches: natural's up to size 4, and size 2.5 human triggered avalanches. In areas where it has not already avalanched it remains touchy, and has been remotely triggered.
The Feb 12 PWL continues to be a concern. During the last storm cycle several avalanches &quot;stepped&quot; down to this layer.  It will remain a problem for some time.
The Feb 12 PWL continues to be a concern. During the last storm cycle several avalanches &quot;stepped&quot; down to this layer. It will remain a problem for some time.
The Feb 12 PWL continues to be a concern. During the last storm cycle several avalanches &quot;stepped&quot; down to this layer. It will remain a problem for some time.
The surface hoar/crust layer from February is becoming less reactive; a function of it now being 1-1.5m deep and having avalanched in many areas. It is most likely to be triggered on solar aspects or by heavy triggers, resulting in large avalanches.
The surface hoar/crust layer from February is becoming less reactive; a function of it now being 1-1.5m deep and having avalanched in many areas. It is most likely to be triggered on solar aspects or by heavy triggers, resulting in large avalanches.
The surface hoar/crust layer from February is most likely to be triggered on solar aspects from shallow areas or from large triggers such as cornice falls resulting in large avalanches.
The surface hoar/crust layer from February is most likely to be triggered on solar aspects from shallow areas or from large triggers such as cornice falls resulting in large avalanches.
The surface hoar/crust layer from February is most likely to be triggered by large triggers such as avalanches triggered in shallower layers in the snowpack and cornice falls which will result in large avalanches.
The surface hoar/crust layer from February is most likely to be triggered by large triggers such as avalanches triggered in shallower layers in the snowpack and cornice falls which will result in large avalanches.
The surface hoar/crust layer from February is most likely to be triggered by large triggers such as avalanches triggered in shallower layers in the snowpack and cornice falls which will result in large avalanches.
It will likely take a large trigger, like a cornice fall or another avalanche to trigger the surface hoar/crust layer from February down 1-1.5m. If triggered, however, the resulting avalanche would be very large and destructive.
It will likely take a large trigger, like a cornice fall or another avalanche to trigger the surface hoar/crust layer from February down 1-1.5m. If triggered, however, the resulting avalanche would be very large and destructive.
It will likely take a large trigger, like a cornice or another avalanche to trigger the surface hoar/crust layer from February 12, now down 1-1.5m. The resulting avalanche would be very large and destructive if triggered.
It will likely take a large trigger, like a cornice or another avalanche to trigger the surface hoar/crust layer from February 12, now down 1-1.5m. The resulting avalanche would be very large and destructive if triggered.
It will likely take a large trigger, like a cornice or another avalanche to trigger the  Feb 12 and March 11 PWL's, now down 1-1.5m. The resulting avalanche would be very large and destructive if triggered.
Two weak layers are buried down 1-1.5m.  Though unlikely, a large trigger like a cornice or another avalanche may cause these weak layers to fail. 
Two weak layers are buried down 1-1.5m. Though unlikely, a large trigger like a cornice or another avalanche may cause these weak layers to fail.
Slopes receiving direct sun become more reactive during the day with warming. This is especially likely on steep solar aspects where buried crusts exist. Solar triggered avalanches are most likely around exposed rocks and may trigger deeper slabs.
Slopes receiving direct sun become more reactive during the day with warming. This is especially likely on steep solar aspects where buried crusts exist. Solar triggered avalanches are most likely around exposed rocks and may trigger deeper slabs.
PWL's are becoming stubborn, but should not be discounted.  Slopes receiving direct sun become more reactive during the day with warming. This is most likely on steep solar aspects where buried crusts exist, but northerly aspects are not immune.
PWL's are becoming stubborn, but should not be discounted.  Slopes receiving direct sun become more reactive during the day with warming. This is most likely on steep solar aspects where buried crusts exist, but northerly aspects are not immune.
Buried weak layers are stubborn to fail, but should not be discounted. Slopes receiving direct sun become more reactive during the day with warming. This is most likely on steep solar aspects where buried crusts exist.
Buried weak layers are stubborn to fail, but should not be discounted. Slopes receiving direct sun become more reactive during the day with warming. This is most likely on steep solar aspects where buried crusts exist.
The recent snow has tightened up into a slab. It sits on various weak crystals, like facets or surface hoar, that may be triggered by skiers. If triggered, avalanches may step down to deeper surface hoar layers resulting in very large avalanches.
The recent snow has tightened into a slab. It sits on various weak crystals, like surface hoar and facets, that can be triggered by people. These avalanches may step down to deeper surface hoar layers, resulting in large avalanches.
A weak layer is buried down around 80 cm.&nbsp; If triggered, a large, high consequence avalanche will result. Carefully evaluate big terrain features by digging and testing adjacent, safe slopes.
A weak layer is buried down 60 to 90 cm. If triggered, a large high consequence avalanche will result. Carefully evaluate big terrain features by digging and testing adjacent, safe slopes.
2 weak layers exist in the snowpack, these are down between 70 and 110cm. They could become reactive with this additional snow load having very large consequences if triggered.
2 weak layers exist in the snowpack, these are getting deeper as snow amounts increase. They are down between 70 and 120cm and will have devastating consequences if triggered.
The interface between the December snow and the facetted November snow, down ~80cm is the biggest concern. Although this interface is becoming less likely to trigger it is possible, or smaller avalanches may step down to this layer.
Persistent weak layers down ~80cm (facets), and down ~115cm (surface hoar) continue to be reactive in specific locations. Although these interfaces are becoming less likely to trigger it is possible, or smaller avalanches may step down to this layer.
Persistent weak layers down ~80cm (facets), and down ~115cm (surface hoar) continue to be reactive in specific locations. Although these interfaces are becoming less likely to trigger it is possible, or smaller avalanches may step down to this layer.
Weak layers are buried down 80 to 100 cm. In a shallow snowpack where the weak layer is well-preserved, a skier could fail these layers.
The 2 buried weak layers down 70 to 110cm are still producing results in our snowpack tests. Caution around shallow snow pack areas where triggering these layers is most likely.
2 buried weak layers down 70 to 110cm remain a concern for riders. Consequences would be large if triggered which is more likely from shallow snowpack areas.
The presence of buried surface hoar remains a concern for backcountry riders. The potential for a large avalanche on this layer still exists.
The presence of a deep surface-hoar weakness remains a concern for backcountry travelers. It will likely take a large load to trigger it, like a cornice or someone who ate too many perogies over Christmas.
A deep persistent weakness lingers, down roughly 120cm. It will take a large trigger to initiate this layer, but if it starts to move, propagation would likely be wide and deep, creating a larger avalanche.
The heavy trigger may have arrived with this latest dump. Large avalanches are occurring, and may be stepping-down to this deeper layer.
This problem is becoming increasingly challenging. The clues of instability, like cracking and whumphing are tapering off, but tests and continued avalanches indicate that this thick slab is triggerable and will produce very large avalanches.
A strong slab overlies a very weak layer buried down 1-1.5m. The snowpack now demands your respect, if you trigger this layer a large, high consequence avalanche will result.&nbsp; Use caution in shallow snowpacks, where triggering is more likely.
A strong slab overlies a very weak layer buried down 1-1.5m. The snowpack now demands your respect, if you trigger this layer a large, high consequence avalanche will result.&nbsp; Use caution in shallow snowpacks, where triggering is more likely.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_E6FD2046">The slab overtop the weak layers down 1-1.5m continues to settle and become more cohesive. This problem will take a while to heal and requires good terrain management. Be particularly weary of open unsupported slopes and convex rolls below tree line.
The 1-1.5m slab over the weak layers continues to settle and become more cohesive. This problem will take a while to heal and requires good terrain management. Be wary of open, unsupported slopes and convex rolls, particularly at tree-line and below.
The 1-1.5m slab overlying the Feb 10th weak layer is slowly bonding to this interface, but is still reactive in tests. This problem requires good terrain management, such as avoiding large convexities and sticking to supported features.
A weak, persistent layer is buried under a thick slab. This layer is becoming more difficult to trigger, but if triggered will propagate widely producing a very large avalanche. Choosing appropriate terrain is key in managing this problem.
As this weak layer, buried down around 1 m, gains strength human triggered avalanches are still possible. Areas of concern are open, unsupported slopes, convex terrain and thin snowpack areas.
As this weak layer, buried down around 1 m, gains strength human triggered avalanches are still possible. Areas of concern are open, unsupported slopes, convex terrain and thin snowpack areas.
The sun crust/surface hoar layer down 1-1.5m is still producing hard sudden results in snowpack tests. This indicates that the layer is difficult to trigger but will propagate widely if it does.
The suncrust/surface hoar layer down 1-1.4m is still producing hard, sudden results in snowpack tests. This indicates it is stubborn to trigger, but if initiated, it will propagate widely, producing large avalanches.
Lingering deep (1-1.4m) in the snowpack, the surface hoar/facet/crust sandwich continues to produce hard, sudden results in tests. If a large enough trigger gets this layer to fail, avalanches will be very large.
The facet/crust &quot;sandwich&quot; is buried 120-150cm below the surface now. It is still producing hard, sudden results in tests, indicating that it can will propagate if a large enough trigger hits it. Avalanches digging into this layer will be large!
This last storm, and the forecast dump of snow this weekend, may wake a weak persistent layer up. This layer, buried ~1.5m deep, is still reactive in snowpack tests and if triggered will produce very large and destructive avalanches.
A deep weak layer buried at the end of January is down around 1.5 m. Although we have not observed any recent skier-triggering of this layer, artillery control triggered this layer on the west side of the park, releasing a size 3.5.
A deep weak layer buried at the end of January is down 1.8 to 2 m.&nbsp; Smaller avalanches could step down and trigger as large, high consequence avalanche on this layer.
A sun crust down ~1m is well within the range of human triggering on south and west aspects. The February surface hoar/crust layer down ~1.5-2m which can reawaken with a heavy trigger such as a large cornice release.
A weak layer down 20-30 cm is still reactive to skier-triggering. Use caution on unsupported features and convex terrain. Watch for changing conditions as temperatures warm up today and surface crusts deteriorate.
We may see the deeper instabilities reawaken with the warm temperatures, and possibly rain, moving into the snowpack. Try to avoid shallow, thin areas where a person could trigger a deeper weakness.
Be aware that step down avalanches are possible if storm slabs or wind slabs are triggered in wind loaded areas.
The large size 3.5 from Moccasin Flats 36 hours ago shows the persistent slabs have not gone away. Larger triggers, like cornices or surface avalanches, may step down to deeper layers.
Without a good refreeze, there is less structure to the snowpack to prevent it from stepping down into the lower persistent weaknesses. The large size 3.5 from Moccasin Flats 2 days ago illustrates the potential destructive force lingering out there.
Trigger points for the persistent weak layers buried down ~1m and ~1.3m include steep alpine terrain, thin areas, and unsupported open slopes.&nbsp; Once initiated avalanches triggered in the storm snow may step down to the deep persistent weak layers.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
Rider triggered and remote avalanches are happening daily on a widespread surface hoar layer down ~50cm. The overlying slab has gained enough strength to propagate widely which means bigger consequences. This problem will persist for a while.
A touchy surface hoar layer continues to be reactive. Avalanches continue to be triggered, even in areas that have been heavily traveled. Some areas offer no clues of instability, but the potential for large avalanches exist.
A touchy surface hoar layer continues to be reactive. Avalanches continue to be triggered, even in areas that have been heavily traveled. Some areas offer no clues of instability, but the potential for large avalanches exist.
The December 17th surface hoar layer is still reactive.  Avalanches continue to be triggered even in locations previously skied. Some areas offer few clues of the instability but the potential for large avalanches continues.
The December 17th surface hoar layer is still reactive. Avalanches continue to be triggered even in locations previously skied. Some areas offer few clues of the instability but the potential for large avalanches continues.
The Dec17th surface hoar is still reactive, with most events at treeline. A size 2 skier-controlled avalanche released on this layer yesterday. Buried surface hoar requires careful decision making, especially as more new snow continues to fall.
The Dec17th surface hoar is still reactive, particularly at treeline. As new snow continues to fall the consequences of an avalanche on this layer increase, careful decision making is still necessary.
The Dec17 surface hoar is most reactive at treeline. As snow load continues the consequences of an avalanche on this layer increase, careful decision making is still necessary. We suspect yesterdays Teddy Bear Trees avalanche to be on this layer.
The December 17th surface hoar layer is still a real concern in the snowpack.  The significant storm snow load should be increasing the probability of triggering this deeper weak layer.  This layer is most prevalent at treeline elevations.
The December 17th layer produced our larger controlled slides yesterday.  Slides initiating in the storm snow have a good probability of overloading this layer as they gain volume.  This layer is most prevalent at treeline elevations.
The Dec 17 instability is still active. Yesterday a field team triggered a sz 1.5 on a convex roll at treeline that had previously released and since reloaded. This layer is widespread at treeline and should not be forgotten during decision making.
A 60cm+ thick cohesive slab now overlies a very touchy surface hoar layer. Tests indicate that it is likely to propagate if triggered, and avalanches have been remotely triggered from up to 300m away.
A 60cm+ thick cohesive slab now overlies a touchy surface hoar layer. Tests indicate that it may be triggered by light loads (ie you) and likely to propagate widely as the slab stiffens. Avalanches have been remotely triggered from up to 300m away.
A 60cm+ thick cohesive slab now overlies a touchy surface hoar layer. Tests indicate that it may be triggered by human loads and likely to propagate widely as the slab stiffens. Avalanches have been remotely triggered from up to 300m away.
Although this surface hoar layer is now buried 70-100cm deep, it will be easily triggered today with addition of the new snow load. Stability tests show that this layer has good propagation potential, making large avalanches likely.
Mid January surface hoar layer is now buried 60-100cm deep. This layer is likely to become more reactive with the current warm conditions and rain we are receiving. 
Natural and artillery triggered avalanches continue to fail on the Jan.15 surface hoar layer, now buried 60-100cm deep. This layer continues to propagate widely into very large avalanches. Avalanches may step down to a deeper layer from mid Dec.
Recent avalanches have been failing on the Jan.15 surface hoar layer, now buried 60-100cm deep. Some avalanches have stepped down to a deeper layer from mid Dec.
Jan 15 surface hoar layer is buried 60-100cm deep. This interface remains reactive due to large, poorly bonded surface hoar crystals.  Avalanches from large triggers such as cornice fall might step down to a deeper layer from Dec 17.
Jan 15 layer is buried 60-100cm deep. This layer remains a concern due to large, poorly bonded surface hoar crystals.  As snow continues to settle, this layer will require larger triggers to initiate. Cornice failures could step down to deep layers.
Continued warm precipitation has been enough to begin to overload the various persistent instabilities in our snowpack. A series of weak layers in the top 1.5m of snowpack should be considered triggerable by back country riders.
A 70-90cm slab sits on a suncrust on steep solar aspects and preserved surface hoar at and below treeline. This slab is well formed in areas influenced by strong winds. This layer is becoming less reactive in tests, but remains triggerable by skiers.
80-100cm of storm slab sits on top of the Dec 2 persistent weak layer. This layer is in the form of surface hoar at and below treeline and suncrust on solar aspects in the alpine. The layer is producing hard results on field tests yesterday at 2100m.
80-100cm of  settling snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below treeline and suncrust on solar aspects treeline to alpine. The layer is producing moderate-hard results on field tests yesterday at 2000m.
80-100cm of settling snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below tree line and sun crust on solar aspects tree line to alpine. The layer has produced moderate-hard results in field tests.
80-100cm of settled snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below tree line and sun crust on solar aspects tree line to alpine. The layer has produced moderate-hard results in field tests.
Varying depths of settled snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below tree line and sun crust on solar aspects tree line to alpine. The layer has produced moderate-hard results in field tests.
80cm of snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below treeline and sun crust on solar aspects. Although this layer is becoming less reactive, it is still producing sudden results in stability tests.
80cm of snow sits on top of the Dec 2 persistent weak layer, which is surface hoar at and below treeline and sun crust on solar aspects. Although this layer is becoming less reactive, it may awaken with ongoing incremental snow loading.
80cm+ of settled snow sits on top of the Dec 2nd interface.  This interface consists of surface hoar at and below treeline and suncrust on steeper solar aspects in the alpine.
80cm+ settled snow sits on top of the Dec 2nd interface. This layer consists of decomposing surface hoar at and below treeline and suncrusts on steep solar aspects in the alpine.
80cm+ settled snow sits on top of the Dec 2nd interface. This layer consists of decomposing surface hoar at and below tree line and sun crusts on steep solar aspects in the alpine.
Below the light surface snow a soft slab sits on a touchy layer (see details tab). This layer is variable and hard to predict. It has been easily triggered where a sun crust is buried, but may also become more reactive at lower elevations.
The incoming storm has the potential to add significant load to a variable and hard to predict weak layer (see details tab).&nbsp; It has been easily triggered where a sun crust is buried, but is also expected to become more reactive at lower elevations.
The storm is upon us with 15cm snow overnight and another 20cm expected today.  Overloading and failure of the soft slab over the Jan 4th weak layer is expected today resulting in an avalanche cycle.
The Jan 4th interface and associated slab were very reactive yesterday. Expect less natural avalanche activity today but continued elevated sensitivity to human triggering on this layer.
The January 4th interface is getting deep enough in the snowpack to be less reactive to skier loads. If storm slabs are triggered the load may be sufficient to wake the Jan 4th up.
The January 4th interface is getting deep enough in the snowpack to be less reactive to skier loads. If storm slabs are triggered the load may be sufficient to wake the Jan 4th up.
The January 4th interface is getting deep enough in the snowpack to be less reactive to skier loads. Triggered wind slabs, or larger loads like a group of skiers, may be sufficient to wake the Jan 4th up.
The January 4th interface is buried 50-80cm deep; still within range of being triggered by a person. The incremental loading of smaller storms onto this interface makes it a tricky one to predict when/if it will fail.
Incremental loading by a series of storms is making a weak layer down 50-80cm an increasing concern. This layer lingers in many areas and is sporadically reactive, making it tricky to assess. When it fails, however, large avalanches are the result.
A surface hoar layer now down 60-100cm is likely to be touchy after being overloaded by the storm. This layer lingers in many areas and is sporadically reactive, making it tricky to assess. When it fails, however, large avalanches are the result.
A surface hoar layer now down 60-100cm is likely to be touchy after being overloaded by the storm. This layer lingers in many areas and is sporadically reactive, making it tricky to assess. When it fails, however, large avalanches are the result.
The January 4th interface was recently rapidly overloaded.  This layer is tricky to assess as it is not evenly distributed on the landscape.  It is also only sporadically reactive.  It can be found in many locations 60-100cm down in the snowpack.
The January 4th interface was rapidly overloaded &amp; woke up during last weeks storm. This layer is tricky to assess as it is not evenly distributed on the landscape &amp; sporadically reactive. It can be found in many locations 60-100cm deep.
The Jan 4th interface was rapidly overloaded &amp; woke up during last weeks storm. This layer is tricky to assess as it is not evenly distributed &amp; sporadically reactive. It's down 60-90cm &amp; was still producing whumfs yesterday in the Cannaught drainage
This layer is tricky to assess as it's not evenly distributed &amp; sporadically reactive. It's down 60-90 &amp; was still producing whumfs yesterday in the Cannaught drainage. It may be possible to trigger from a thin area or by a large trigger like cornice
The Jan 4th layer is a lingering concern, and it is a tricky to assess. Where it exists it is down 60-90cm, but it is not evenly distributed &amp; is sporadically reactive. It has been triggered recently by cornices, resulting in large avalanches.
The Jan 4th layer is a lingering concern, and it is a tricky one to assess. Where it exists it is down 80-120cm, but it is not evenly distributed &amp; is sporadically reactive. It has been triggered recently by cornices, resulting in large avalanches.
The Jan 4th layer is a lingering concern down 80-120cm in the snowpack.  it is not evenly distributed and is sporadically reactive.  Added load of storm slabs or cornice fall when triggered may provide sufficient load to wake this layer up.
The Jan 4th interface is a lingering concern.  It can be found down 80-120cm in the snowpack.  It is not evenly distributed and sporadically reactive.  Storm slab failure or cornice fracture may provide the load to wake this layer up.
Feb 10 interface lingers and may become reactive given prolonged sun or added load such as cornice fall or slab avalanche. 
Feb 10 interface lingers and is becoming difficult to forecast. In some areas there is surface hoar on a crust which is a good recipe for bad avalanches. It may become reactive given prolonged sun or added load such as cornice fall or slab avalanche
Feb 10 interface lingers and is becoming difficult to forecast. In some areas there is surface hoar on a crust which is a good recipe for bad avalanches. It may become reactive given prolonged sun or added load such as cornice fall or slab avalanche
Feb 10 interface lingers and is becoming difficult to forecast. In some areas there is surface hoar on a crust which is a good recipe for bad avalanches. It may become reactive given prolonged sun or added load such as cornice fall or slab avalanche
Feb 10 interface lingers and is becoming difficult to forecast. In some areas there is surface hoar on a crust which is a good recipe for bad avalanches. It may become reactive given prolonged sun or added load such as cornice fall or slab avalanche
The Feb 10th layer is buried 50-90cm. In some areas there is surface hoar on a crust, creating a dangerous combination. Sensitivity to triggering is variable among terrain features and careful consideration is required. Dig down and test this layer.
The Feb 10th layer is buried 50-90cm. In some areas there is surface hoar on a crust, creating a dangerous combination. Sensitivity to triggering is variable among terrain features and careful consideration is required. Dig down and test this layer.
The Feb 27 crust/ surface hoar layer is down 50-60cm and is producing moderate results in stability tests.&nbsp; When triggered, this layer could propagate into a large avalanche.&nbsp; Dig down and test this layer before committing. It is easy to identify.
The Feb 27 crust/ surface hoar layer is down 60cm and produces sudden results in stability tests. When triggered, this layer could propagate into a large avalanche. With warming temperatures this layer could fail as a moist slab at lower elevations.
The Feb 27 crust/surface hoar layer down 70cm produces sudden results in stability tests.  If triggered this layer could propagate into a large avalanche.  Continued warm temperatures could see this layer failing as a moist slab at lower elevations.
The February 27th interface is now down 70cm and was recently producing sudden planar results on field tests.  If triggered large avalanches could result.  Solar input today could increase this layer's sensitivity.
The February 27th interface is now down 70cm and is producing sporadic sudden planar results on field tests in sheltered areas. If triggered large avalanches could result. Daytime heating and solar input today could increase this layer's sensitivity.
The Feb 27th interface is now down 60cm &amp; is producing sudden planar results on a crust on S though W aspects. Test results on NE aspects showed stubborn results. Wind-loading and solar input will increase it's sensitivity.
The Feb 27th interface is down 60cm and is producing sudden planar results on a crust on S though W aspects. Test results on NE aspects showed stubborn results. Wind-loading will increase it's sensitivity. Wet slabs below treeline from rain.
The Feb 27th interface is down 80cm and is producing sudden planar results on a crust on S though W aspects and surface hoar in isolated spots. This layer has been active recently, triggered by small wind slab avalanches and cornice falls.
Feb 27 interface is down 80cm+ and continues to give sudden planar results in field tests. The layer consists of crusts on solar aspects and decomposing surface hoar in isolated locations.
Feb 27 interface is down 80cm+ and continues to give sudden planar results in field tests. The layer consists of crusts on solar aspects and decomposing surface hoar in isolated locations.
Feb 27 interface is down 80cm+ and continues to give sudden planar results in field tests. The layer consists of crusts on solar aspects and decomposing surface hoar in isolated locations.
ont-weight: normal;font-size: 13px;color: #0000FF;text-decoration: underline; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B">Tests, and recent avalanches in the region, continue to show that a layer down 75 to 100 is </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/RB4%28WB%29%20dn%2075cm.JPG" target="_blank"><span class="s_9255B882">triggerable by light loads</span></a><span class="s_AA239A9B"> (that's you). If triggered this layer is</span><a href="https://www.facebook.com/ParksMountainSafety/videos/vb.145133538869977/957537630962893/?type=2&amp;theater" target="_blank"><span class="s_9255B882"> likely to propagate</span></a><span class="s_AA239A9B"> into large avalanches. This layer is of most concern on solar aspects.
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</style><p class="p_CC664AAA"><span class="s_AA239A9B">Tests, and recent avalanches in the region, continue to show that a layer down 75 to 100 is </span><a id='GoToAdded' href="http://www.pc.gc.ca/apps/links/goto_e.asp?destination=http://data.avalanche.ca/Images/RB4%28WB%29%20dn%2075cm.JPG" target="_blank"><span class="s_9255B882">triggerable by light loads</span></a><span class="s_AA239A9B"> (that's you). If triggered this layer is</span><a href="https://www.facebook.com/ParksMountainSafety/videos/vb.145133538869977/957537630962893/?type=2&amp;theater" target="_blank"><span class="s_9255B882"> likely to propagate</span></a><span class="s_AA239A9B"> into large avalanches. This layer is of most concern on solar aspects.
Buried crusts are creating persistent instabilities on solar aspects.  Storm snow sits on a crust down 30-50cm. February crust is down 80-120cm and still has surface hoar crystals on top in some places. Locate and test these layers before committing.
A crust buried up to 1m deep may become increasingly reactive over the weekend and be hard to predict. Test results show variability: in some areas it is unreactive and in others it may be triggered by light loads (you!) and produce large avalanches.
Forecast snow and wind might make a crust buried up to 1m deep more reactive and unpredictable. Test results show variability: in some areas it is unreactive and in others it may be triggered by light loads (you!) and produce large avalanches.
Storm snow loading on top of the persistent slab/Nov crust could make this deep slab more reactive. Field tests so far show variability with areas that are unreactive and others where light loads may trigger slides on this layer.
The snow from the past week has been slow to form a slab in part due to continued cool temperatures and little wind. Slab properties are now starting to form and this is a concern, given the poor bond to the Dec 18th facet layer down 50-60cm.</span></p><p class="p_CC664AAA"><span class="s_AA239A9B">
The weak, facetted snow from the cold snap in early December is now buried ~70-100cm. The slab over this layer is developing, and as the load on this layer grows it may become increasingly reactive.
The Jan 25th sun crust is buried down approx 60cm.  Before last week's storm it was giving easy sudden planar results and was reactive to human triggering.  If the storm slab releases it has the potential to step down to this deeper weak layer.
The January 25th sun crust, weak layer is buried down approx 60cm.  Before last week's storm it was giving easy sudden planar results and was reactive to human triggering.  Warming surface layers may reawaken this layer today.
Weak layers in the top meter include sun crust on solar slopes and pockets of surface hoar. Snowpack tests have been finding isolated sudden planar results, making them hard to predict. With the added load of rain/heavy snow they may be more reactive
Weak layers in the top meter include sun crust on solar slopes and pockets of surface hoar. Snowpack tests show isolated sudden planar results, making them hard to predict. With the added load of rain/heavy snow they may be more reactive.
Weak layers in the top meter include sun crust on solar slopes and pockets of surface hoar. Snowpack tests show isolated sudden planar results, making them hard to predict. With the added load of rain/heavy snow they may be more reactive.
Weak layers in the top meter include sun crust on solar slopes and pockets of surface hoar. Tests show isolated sudden planar results, making them hard to predict. Be cautious in shallow snowpack areas (ridge-crests) where triggering is more likely.
Weak layers in the top meter include sun crust on solar slopes and pockets of surface hoar. Tests show isolated sudden planar results, making them hard to predict. Be cautious in shallow snowpack areas (ridge-crests) where triggering is more likely.
Buried crusts on solar aspects are hidden under the march snow. A snow profile yesterday on a south aspect showed the storm snow bonding to the crust, however skiers were able to trigger slab avalanches on this layer earlier in the week.
Buried crusts on solar aspects are hidden under the march snow. Skiers were able to trigger slab avalanches on this layer earlier in the week and yesterday.
Buried crusts on South and West aspects are hidden under the march snow. Skiers were able to trigger slab avalanches on this layer earlier in the week.&nbsp; Take time to assess the how the snow is bonding when moving onto solar aspects
Buried crusts on South and West aspects are hidden under the March snow. Skiers were able to trigger slab avalanches on this layer earlier in the week. Recent storm snow has a high potential to dig down and trigger these deeper slabs.
Buried crusts on South and West aspects are hidden under the March snow. Skiers were able to trigger slab avalanches on this layer earlier in the week. Recent storm snow has a high potential to dig down and trigger these deeper slabs.
Buried crusts on solar aspects are hidden under our recent storm snow. Skiers were able to trigger slab avalanches on this layer earlier in the week. Avalanches triggered in the storm snow have a high probability to overload this layer.
Several persistent weak layers are in the upper snowpack. There is step down potential for storm slab releases to dig down to these layers resulting in large dangerous avalanches.
Rain soaked snow yesterday will have penetrated deep into the snowpack, lubricating the deeper persistent layers of concern. As the storm slabs fail above these layers it will easily step down to the Feb 28th interface and deeper.
Persistent deep layers made a triumphant return during our most recent avalanche cycle and they remain a cause for concern. As surface instabilities fail, avalanches can easily step down weak layers from late February.
Arial';font-style: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><a href="https://www.facebook.com/ParksMountainSafety/photos/a.1122932427756745.1073741905.145133538869977/1250972184952768/?type=3&amp;theater" target="_blank"><span class="s_9255B882">Persistent deep layers</span></a><span class="s_AA239A9B"> made a triumphant return during our most recent avalanche cycle and they remain a cause for concern. As surface instabilities fail, avalanches can easily step down to weak layers from late February.
Arial';font-style: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><a href="https://www.facebook.com/ParksMountainSafety/photos/a.1122932427756745.1073741905.145133538869977/1250972184952768/?type=3&amp;theater" target="_blank"><span class="s_9255B882">Persistent deep layers</span></a><span class="s_AA239A9B"> made a triumphant return during our most recent avalanche cycle and they remain a cause for concern. As surface instabilities fail, avalanches can easily step down to weak layers from late February, or deeper in shallow areas.
Arial';font-style: Normal;font-weight: normal;font-size: 13px;color: #000000; } 
</style><p class="p_CC664AAA"><a href="https://www.facebook.com/ParksMountainSafety/photos/a.1122932427756745.1073741905.145133538869977/1250972184952768/?type=3&amp;theater" target="_blank"><span class="s_9255B882">Persistent deep layers</span></a><span class="s_AA239A9B"> made a triumphant return during our most recent avalanche cycle and they remain a cause for concern. As surface slabs fail, avalanches can easily step down to weak layers from late February, or deeper in shallow areas.
It is an impressive and humbling time to be traveling in the back-country. Very large avalanches have been occurring, even logging mature timber. The scary thing is, these large avalanches continue to occur sporadically and are very hard to predict.
It is an impressive and humbling time to be traveling in the back-country. Very large avalanches have been occurring, even logging mature timber. These large avalanches continue to occur sporadically and are very hard to predict.
The month of March has been characterized by heavy loading of new snow and rain. These events have created an instable snowpack that is verging on a tipping point. Deep weak layers have been failing sporadically leading to large avalanches.
The month of March has been characterized by heavy loading of new snow and rain.  After an intense avalanche cycle, the snow pack is still stabilizing. Deep weak layers have been failing sporadically leading to large avalanches.
The month of March has been characterized by heavy loading of new snow and rain. After an intense avalanche cycle, the snow pack is still stabilizing. Deep weak layers have been failing sporadically leading to large avalanches.
The month of March has been characterized by heavy loading of new snow and rain. After an intense avalanche cycle, the snow pack is still stabilizing. Deep weak layers have been failing sporadically leading to large avalanches.
Jan 5 Surface Hoar/ Suncrust layer is now buried 60 to 90 cm. Extra caution on sheltered North and East aspects. Dig down to identify this layer and avoid  steep or unsupported slopes where it is present. Triggering this layer would be serious.
Jan 5 interface in sheltered locations where preserved surface hoar can be found down 50 to 90 cm. Dig down often to identify this layer and avoid steep or unsupported slopes where surface hoar is present. Triggering this layer would be serious.
Associated with mid pack crusts we see a layer of sugary crystals underlying stiffer upper layers. Use more caution in thin areas as triggering&nbsp; may be more likely.
The crusts near the bottom of the snowpack have been weakening, especially on cooler North aspects.
Weak snow associated with crusts formed in Mid and early November can be found down about 70cm. This seems to be less significant on Southerly aspects. Triggering planar slopes from thin areas remains a possibility to consider.
Weak snow associated with crusts formed in Mid and early November can be found down about 70cm. This seems to be less significant on Southerly aspects. Triggering planar slopes from thin areas remains a possibility to consider.
This layer of weak sugary snow is found in many areas&nbsp; about 30 to 40cm from the ground. Triggering&nbsp; of this&nbsp; layer is more of a concern in shallower snowpack areas.
Weak faceted or sugary snow can be found almost everywhere 30 to 40 cm above the ground. Triggering in thin snowpack areas remains a concern. Some natural avalanche activity should be expected if snowfall amounts are significant Friday.
These recently formed slabs have proven to be very easy to trigger failing naturally and with light loads. Limit your exposure to significant slopes. Do not get taken by surprise by the long propagations or remote triggering that has been seen.
&nbsp; These slabs have become a little less touchy but are now buried by an additional load (60cm over the past week). Limit your exposure to significant slopes. Do not get taken by surprise. Long propagations are still likely.
Now 80 to 130 cm thick, these slabs threaten serious consequence. While the potential for triggering has dropped, do not get taken by surprise: long propagations and remote triggering may still be possible. Limit your exposure to significant slopes.
These slabs became less sensitive with cold temperatures and increasing depth. Now as conditions change with rapid loading and warming, limit your exposure to significant slopes. Do not get taken by surprise. Long propagations may still be possible.
These slabs became less sensitive with the increasing snowpack depth. As temperatures warm to ridgetop for Sun limit your exposure to significant slopes. Do not get taken by surprise. Long propagations may still be possible.
The weak February facet layer is now buried up to 170cm deep. Large loads such as cornices have triggered this layer where it is deep and it has failed with sluffing and heating where it is shallow. Long propagations are possible with this layer.
The weak facet layer is now buried by up to 170cm in treeline and alpine areas and below treeline is found down 50cm. Many avalanches fell over the weekend on this layer and it is a concern that may persist for some time. Triggering is possible!
The layer down 70-170 cm is still active as demonstrated Thur with avalanche control work up Akamina. Any slope not yet slid should be a concern. Windslabs, cornices, storm slabs or wet loose avalanches could step down and result in large avalanches.
70 to 110cm of snow is now settling above the early March Crusts. Variable shears persist in these slabs and they are well worth bearing in mind particularly as heating becomes more of a factor in the days and weeks to come.
Although unlikely, a large load such as a cornice failure or another avalanche could trigger all of the snow above these strong crusts. Significant and sustained heating or rain may also allow these slabs to become active such as is forecast Monday.
With significant heating in the forecast for Monday and Tuesday deep slabs may become active. Large loads such as falling cornices or smaller avalanches could trigger large avalanches on the March crusts or even the February facets.
;font-weight: normal;font-size: 16px;color: #000000; } 
</style><p class="p_CC664AAA"><span class="s_AA239A9B"> </span><span class="s_E6FD2046">With significant heating in the forecast for Tuesday deep slabs may become active. Large loads such as falling cornices or smaller avalanches could trigger large avalanches on the March crusts or even the February facets.
These slabs taper radically with elevation. Large slides resulted from failures in the recent storm snow over the crust that extends into the alpine.
These slabs taper radically with elevation and are sitting on a thick crust. Large slides resulted from failures in the recent storm snow over the crust that extends to around 2300m. These slabs may become easier to trigger with the expected heating.
The weak snow above the crust is now primed with a big enough slab for there to be serious consequences. In the alpine this problem will likely be limited to N and E aspects but at treeline it is widespread. Use extra care in open, sheltered terrain.
The weak snow above the crust is now primed with a big enough slab for there to be serious consequences. In the alpine this problem will likely be limited to N and E aspects but at treeline it is widespread. Use extra care in open, sheltered terrain.
Facets and isolated surface hoar above the Dec 13 crust remain the feature to watch in the snowpack. New load from storms or wind transport will make this more sensitive to triggering especially when combined with warm temperatures Wednesday.
Continue to watch for this layer which has proven to be extremely variable. Areas where these slabs are thin may should raise added caution.
Continue to watch for this layer which has proven to be extremely variable. Areas where these slabs are thin should raise added concern.
Continue to watch for this layer which has proven to be extremely variable. Be extra vigilant in thin snowpack areas, where the layer is more likely to be triggered by riders/climbers.
Although we have received recent extra snow load on this layer, it is not reacting. It is becoming less and less reactive as time goes by. Be mindful in thin snowpack areas, where the layer is more likely to be triggered by riders/climbers.
Although we have received recent extra snow load on this layer, it is not reacting. It is becoming less and less reactive as time goes by. Be mindful in thin snowpack areas, where the layer is more likely to be triggered by riders/climbers.
We received additional snow load last weekend but have still not seen any evidence of activity on this layer in our area even though neighbouring areas have. Be mindful in thin snowpack areas, where the layer is more likely to be triggered.
A large natural slab avalanche was observed last wednesday, this may have released at a buried crust from early December. For now, it is unclear if this will remain an isolated event, or if this layer is becoming more sensitive to loads.
A large natural slab avalanche was observed last wednesday, this may have released at a buried crust from early December. For now, it is unclear if this will remain an isolated event, or if this layer is becoming more sensitive to loads.
A weak layer that was buried in early January seems to be gaining strength, but this strength is being put to the test by wind loading, new snow and near-zero temperatures.
Nearby operations have reported these failing in the middle of the snowpack, and in some cases stepping down to ground. They are most likely to be triggered in thin Rocky areas, which are more widespread in the Eastern areas of the Park.
Nearby operations have reported these failing in the middle of the snowpack, and in some cases stepping down to ground. They are most likely to be triggered in thin rocky areas, which are more widespread in the Eastern areas of the Park.
Nearby areas have seen these failing in the midpack facets in thicker areas and in loose sugary facets near the ground in thinner areas. They are most likely to be triggered in thin rocky areas, with variable snowpack depth.
The weak midpack facet layer is widespread, but highly variable slab thickness and sensitivity makes these hard to evaluate. These are difficult to trigger, but may be large. Rocky, wind-exposed areas are most suspect.
The weak mid-pack facet layer is widespread, but&nbsp; the slab over it is variable. These may be&nbsp; difficult to trigger but&nbsp; are high consequence. Avoid large uniform features, shallow trigger points, and watch for slab properties in the upper snowpack.
The weak facet layer is isolated to thin snowpack areas where the presence of any slab over these crystals would spell concern. Avoid thin snowpack areas, use caution with large uniform features, and consider the potential for shallow trigger points.
Avoid thin snowpack areas, use caution with large uniform features, and consider the potential for shallow trigger points.
A weak layer of facets in the middle of the snowpack will be trying to adjust to new loading from recent snowfall, and forecast wind transport. A Moderate, Sudden Planar result in a snowpack test on Tuesday indicates potential for human triggering.
Facets in the midpack have produced sporadic test results, and loads in thin Alpine areas could trigger Deep Persistent Slabs on a Depth Hoar/Crust combo near the bottom of the snowpack. Near-zero temps may increase sensitivity of these layers.
A 70cm slab of previous storm snow sits on a crust below 2000m, and/or facets. These are widespread, but hard to trigger. Dig in safe areas on adjacent slopes, do snowpack tests and gain more information, before entering into consequential terrain.