Avalanche Forecast
Issued: Feb 21st, 2020 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Deep Persistent Slabs.
mmueller,
Avalanche Canada
Tomorrow will be similar to today weather wise. It could be worth sneaking in a longer day. Sunday may bring us some much needed snow.
Summary
Confidence
Weather Forecast
Temperatures will dip slightly tonight to -10 and warm up to -6 for tomorrow afternoon. Most of the day will be cloudy, but as evening approaches there will be a clearing trend. Temperatures will also fall to -20! No significant snow is expected tomorrow, but Sunday might bring some snow. Winds will continue to be gusty (up to 50km/hr) tomorrow and they'll be out of the SW.
Avalanche Summary
Nothing seen today.
Snowpack Summary
Variable winds have stripped many ridge lines and made for windslabs of varying thicknesses in open areas at treeline and above. In most areas these slabs sit on a solid midpack ranging in thickness from 50cm to well over a meter. And, as expected the deep layers are still with us and still concerning for large triggers. The crusts from past warm weather spells are still apparent in valley bottoms, but generally not a problem.
Terrain and Travel
- Caution around convexities or sharp changes in terrain.
Problems
Wind Slabs
Variable depth and density of wind slabs throughout the Alpine. These are most concerning in steep, convex and unsupported terrain.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
This is a classic "low probability, high consequence" problem. While it is difficult to trigger, resulting avalanches will be very large. Use caution in shallow snowpack areas where triggering is more of a concern.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Feb 22nd, 2020 4:00PM
