Avalanche Forecast
Issued: Dec 21st, 2021 3:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
Dvonk,
Avalanche Canada
The winds have been howling out there! At all elevations bands the winds have changed the snowpack. Tomorrow is the start of a storm and the winds will continue to blow strongly with new snow. The Danger rating may increase with more snow then forecasted.
Summary
Confidence
Weather Forecast
Slightly warmer temperatures tomorrow -9 in the Alpine. 6-8cm possible through out the day. The wind will remain strong throughout the storm. The snow will continue in to the evening and all day Wednesday. By Wednesday eve there could be up to 30cm
Avalanche Summary
No new avalanches observed today. However moderate snow transport was observed off the highest of peaks. A party also reported a large cornice failure, surely from wind loading in the Black prince zone.
Snowpack Summary
Wind slabs are being found in Specific locations in open Tree line. The Alpine was heavily wind affected and scoured in proud features. 10-15cm settled snow now sits on top of previous surfaces. Below that the Dec 1st crust is down 70cm and is faceting above the crust. Below that a well settled mid pack exists. Depth hoar was found today in a Snow pit in the alpine in Burstall pass. Height of snow at 2200m was 185cm
Terrain and Travel
- Fresh wind slabs will likely form throughout the day, diligently watch for changing conditions.
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
Problems
Wind Slabs
The Alpine has been heavily wind affected. Scoured features and moderate transport observed all day.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 22nd, 2021 3:00PM
