Avalanche Forecast
Issued: Dec 8th, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs, Loose Dry and Persistent Slabs.
Barb Sharp,
The Icefields Parkway is closed, with an estimated opening of 1200 Dec. 10th.
Summary
Weather Forecast
10cm of snow is expected overnight. Cooler temperatures and clear skies are forecasted for the remainder of the week.
Snowpack Summary
Up to 50cm of new snow in the past 24h with moderate SW winds has resulted in new winds slabs in ALP lee features and widespread storm slabs. These overlie a variety of previous surfaces including hard slabs in the ALP and open TL, facets and isolated surface hoar at TL and BTL, and solar crust on steep solar aspects.
Avalanche Summary
Numerous loose dry and slab avalanches up to size 2 at all elevations and aspects.
Confidence
Problems
Storm Slabs
Recent HST is being distributed and forming wind slabs in the ALP and open TL.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Loose Dry
- Avoid terrain traps, such as gullies, where the consequences of a small avalanche could be serious.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Persistent Slabs
The Nov. 4 crust is down up to 90cm at tree line (2000m) and breaking down. Storm slabs may step down to this layer or even deeper to the basal instability creating large destructive avalanches.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 9th, 2020 4:00PM
