Avalanche Forecast
Issued: Apr 1st, 2021 8:00AM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Persistent Slabs.
Jonas Hoke,
Watch for fresh pockets of windslab if you can see transport at ridgetop.
Scale back your exposure on slopes that have a buried suncrust if/when the sun pops out this afternoon.
Summary
Weather Forecast
A weak cold front passing this afternoon/evening will give increasing wind and isolated flurries.
Today: Mostly cloudy with isolated flurries. Alpine high -2 C. Ridge wind light gusting strong SW. Freezing level 1800m.
Tonight: Clear periods. Low -8 C. Light-mod SW wind.
Friday: Isolated flurries. Alpine High -6 C. Light SW wind.
Sat: Flurries (12 cm).
Snowpack Summary
A fresh breakable crust on solar aspects may break down if the sun comes out this afternoon. Recent winds have built pockets of slab in alpine and treeline lees. The March 18th layer (a crust on Solar aspets and isolated surface hoar on sheltered Northerly aspects) is now buried 60-100cm depending on aspect and elevation. Cornices are huge.
Avalanche Summary
No new avalanches were observed on Wednesday.
A skier accidental occurred Tuesday in the Teddy Bear Trees. The slab avalanche was a healthy size 3, and failed on the March 18th melt-freeze crust. There was also a MIN report of a skier accidental and skier remote avalanche in the Hermit Moraines area Tuesday, click here for more details.
Confidence
Problems
Wind Slabs
Wind in the wake of last weekends storm built pockets of windslab in lee terrain. Increasing wind this afternoon may build on this problem.
- Use caution in lee and cross-loaded terrain near ridge crests.
Aspects: North, North East, East, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Persistent Slabs
Skier triggering of a large avalanche on this layer, on a SE aspect, on Tuesday, shows that this layer may persist as a low probability high consequence problem.
- Assess start zones carefully and use safe travel techniques.
Aspects: East, South East, South, South West, West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Apr 2nd, 2021 8:00AM
