Avalanche Forecast
Issued: Dec 10th, 2016 3:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Persistent Slabs.
jeremy.mackenzie,
Alberta Parks
Carefully evaluate Alpine terrain due to the presence of buried wind slabs. The character, distribution and triggerability of these slabs seems highly variable.
Summary
Confidence
Moderate -
Weather Forecast
Sunday will be cloudy with isolated light flurries and a high near -15 °C. Monday will see a return to cold and clear conditions with temperatures back into the -20 to -25 range.
Avalanche Summary
No new avalanches were observed or reported today.
Snowpack Summary
Trace to 3cm of new snow in past 24hrs has added to an average of 15cm of low density snow overlying buried wind slabs in the Alpine. These slabs are 5 to 15cm thick and sit on a pronounced layer of weak facets just above the Nov 12th crust layer which is now buried between 40 and 60cm. Snowpack stability tests are giving widely variable results below these buried wind slabs.
Problems
Persistent Slabs
Buried wind slabs are found along ridge-crests in the Alpine. Though generally small, if these slabs are triggered they may entrain the loose snow to create larger than expected avalanches. There is a high degree of variability across terrain.
Evaluate unsupported slopes critically.Use caution on open slopes and convex rolls
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Dec 11th, 2016 2:00PM
