Avalanche Forecast
Issued: Apr 10th, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
JSmith,
Avalanche Canada
Recent wind has varied in direction so watch for wind slabs on all aspects.
Use high points in the terrain such as ridges or ribs to avoid areas of wind-loaded snow.
Summary
Confidence
Moderate - Uncertainty is due to the limited number of field observations.
Weather Forecast
Sunday night: Mostly clear / Light northeast wind / Low of -14 / Freezing level valley bottom.
Monday: Mix of sun and cloud / Moderate east wind / High of -7 / Freezing level valley bottom.
Tuesday: Mix of sun and cloud / Strong east wind / High of -10 / Freezing level valley bottom.
Wednesday: Mix of sun and cloud / Moderate southeast wind / High of -8 / Freezing level valley bottom.
Avalanche Summary
Explosive control work produced wind slab avalanches up to size 3 near Sentinel Pass on Saturday. The most notable results occurred on north and east aspects that had been most loaded by recent wind.
Snowpack Summary
10-30 cm of recent snow buries a melt-freeze crust that exists on all aspects to at least 2000 m. A sun crust likely extends to mountain tops on solar aspects.
Recent strong winds from a variety of directions formed wind slabs on lee aspects at treeline and above.
The prominent layer in the upper snowpack is a melt-freeze crust down 50-70 cm.
Cornices are very large and exposure to slopes beneath them should be minimized, especially if the weather is sunny, warm, or windy.
Terrain and Travel
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
- Recent wind has varied in direction so watch for wind slabs on all aspects.
- Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
- When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.
Problems
Wind Slabs
Recent wind has varied in direction so watch for wind slabs on all aspects.
Use high points in the terrain such as ridges or ribs to avoid areas of wind-loaded snow.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 11th, 2022 4:00PM
