Avalanche Forecast
Issued: Apr 22nd, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Loose Wet.
JSmith,
Avalanche Canada
Lingering wind slabs formed by 20-30 cm of recent snow may remain reactive on lee features in the alpine.
Avoid exposure to steep sun exposed slopes.
Summary
Confidence
Moderate - Uncertainty is due to the limited number of field observations.
Weather Forecast
Friday night: Clear / Light west wind / Low of 1 / Freezing level 1400 m.
Saturday: Sunny / Light southwest wind / High of 10 / Freezing level 1800 m.
Sunday: Cloudy during the day, then 15-20 cm snow overnight (rain below around 1300 m) / Moderate southwest wind / High of 9 / Freezing level 1700 m.
Monday: Mix of sun and cloud / Light southwest wind / High of 7 / Freezing level 1300 m.
Avalanche Summary
Numerous small (size 1) naturally triggered wet loose avalanches were reported on all aspects below treeline on Thursday.
We currently have very limited avalanche observation data from this region.
Please consider posting your observations to the Mountain Information Network (MIN). Photos of current conditions and avalanches are the most helpful.Â
Snowpack Summary
Lingering wind slabs formed by 20-30 cm of recent snow may remain reactive on lee features in the alpine.
The recent snow is sitting on a variety of hard snow surfaces, including crusts and wind scoured snow.Â
Below this, there are several crusts in the upper snowpack. In areas where there are weak facets sitting on top of the crusts, there is potential for large natural avalanches when freezing levels reach mountain tops for multiple days.
Avoid large slopes and avalanche paths during periods of intense warming.
Cornices are large and more prone to failure during periods of intense warming.
Terrain and Travel
- Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.
- Caution around slopes that are exposed to cornices overhead.
- Back off slopes as the surface becomes moist or wet with rising temperatures.
- Avoid exposure to steep sun exposed slopes.
Problems
Wind Slabs
Lingering wind slabs formed by 20-30 cm of recent snow may remain reactive on lee features in the alpine.
Use ridges or ribs to avoid areas of wind loaded snow.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Loose Wet
Small wet loose avalanches may occur on all aspects as freezing levels rise to mountain tops.
Avoid big, steep, alpine slopes that are getting cooked by the sun.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 23rd, 2022 4:00PM
