Avalanche Forecast
Issued: Dec 11th, 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
Great skiing out there, but watch for buried wind slabs in the Alpine. Steep and unsupported features should be approached with caution.
Summary
Confidence
High -
Weather Forecast
Monday will bring cold and clear conditions with highs near -20 °C and significant wind chill values. Winds will be out of the NW at 30km/h. Similar conditions will continue on Tuesday before a moderate warming trend arrives on Wednesday.
Avalanche Summary
No new avalanches were observed or reported today.
Snowpack Summary
Trace to 1cm of new snow in past 24hrs with very little wind effect in the upper 20cm of surface snow. Buried wind slabs are found on all aspects in the Alpine and just down into Treeline elevations, but they are variable in nature. These slabs are 5 to 20cm 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. Recent snowpack stability tests are giving widely variable results below these buried wind slabs.
Problems
Persistent Slabs
Buried wind slabs are found in the Alpine and they extend just down into Treeline in some areas. There is a high degree of variability in the character, thickness and sensitivity to triggers in these wind slabs.
Use caution on open slopes and convex rolls Evaluate unsupported slopes critically.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Dec 12th, 2016 2:00PM
