Avalanche Forecast
Issued: Nov 20th, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
Kate Ryan,
Watch the Wind this Weekend.
Below treeline many gremlins still lurk waiting to steal your ski tips... watch out!
Summary
Weather Forecast
The Pacific storms will be passing north of us this weekend, leaving us with unsettled conditions and scattered flurries.
Tonight: trace snow, freezing level (fzl) 800m, wind SW 30-40km/h
Sunday: trace of snow. Fzl rising to 1200m. Wind SW 30km/h
Monday: 5cm of snow. Fzl 1300m. Wind SW 30km/h gusting to 55km/h.
Snowpack Summary
In the past 24hrs 10-20cm of new snow has fallen and is currently being redistributed by sustained moderate southerly winds. At treeline, this new snow covers the widespread November 15th crust; below, travel remains exceptionally poor. The November 5th crust has been found to be decomposing near the bottom 1/3rd of the snowpack.
Avalanche Summary
No new natural or human triggered avalanches have been observed or reported from the back country and highway corridors in the past 3 days. We registered the Howitzers on Thursday, firing artillery at very steep terrain in the highway corridor with little to no result.
Confidence
Problems
Wind Slabs
With the increase in wind values this weekend, fresh windslabs are likely forming near ridge-crests and on cross loaded features. There is a lot of snow available for transport in the alpine and upper treeline elevations!
- Carefully evaluate terrain features by digging and testing on adjacent, safe slopes.
- Use caution in lee and cross-loaded terrain near ridge crests.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 21st, 2021 4:00PM
