Avalanche Forecast
Issued: Nov 17th, 2021 5:23PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Storm Slabs.
Brian Webster,
Natural avalanches were still observed in past 36 hours. Conservative decision making is still required.
Summary
Weather Forecast
Mixed sun and cloud for Thursday with light snow beginning on Thursday night. Valley bottom highs of around -4 and ridge-top highs of -12 forecast for Thursday.
Snowpack Summary
Several cm of fresh snow exist over a surface crust (below 2100m). Recent storm snow (5 day total of 65-90 cm) is starting to settle. A melt/freeze crust exists near the ground (in some locations). Wind slabs and residual storm slabs exist in alpine and down into tree-line elevations. Snowpack depths at tree-line average 60-110 cm.a
Avalanche Summary
The natural avalanche from the recent storm has tapered however Lake Louise Ski Resort is still reporting explosive triggered and natural avalanches on Wednesday. These are primarily windslabs up to size 2 in the alpine, however one natural size 3 was also observed.
Confidence
Problems
Wind Slabs
Windslabs exist in the alpine and down into some tree-line locations. There is lots of snow available for transport so watch local conditions.
- Watch for surface cracking and stiffer surface layers of snow. Avoid wind loaded terrain.
- Use caution in lee areas. Recent wind loading have created wind slabs.
Aspects: North, North East, East, South East.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Storm Slabs
Storm snow is beginning to settle and bond but residual storm slabs still exist in alpine and tree-line locations.
- Make observations and assess conditions continually as you travel.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 18th, 2021 4:00PM
