Avalanche Forecast
Issued: Apr 3rd, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Cornices.
JSmith,
Avalanche Canada
Convective flurries on Sunday and southwesterly winds may form small wind slabs sitting on slippery crusts below alpine ridgetops. Use caution when transitioning into wind affected terrain.
Summary
Confidence
Weather Forecast
SATURDAY NIGHT: Clear skies / Moderate, southwest ridgetop wind / alpine low temperature -5 / Freezing level 2000 m.
SUNDAY: Snow flurries/rain; 5-15 cm. / Moderate, southwest ridgetop wind / alpine high temperature 2 / Freezing level 1700 m.
MONDAY: Sunny / Light, southeast ridgetop wind / alpine high temperature 6 / Freezing level 2200 m.
TUESDAY: Sunny / Light, west ridgetop wind / alpine high temperature 8 / Freezing level 2500 m.
Avalanche Summary
On Friday, naturally triggered wet loose avalanches up to size 1.5 were reported on steep solar aspects in the alpine.
Snowpack Summary
Convective flurries on Sunday and southwesterly winds may form small wind slabs sitting on slippery crusts on lee features below alpine ridgetops. Crusty surfaces exist on all but north facing terrain at upper elevations.
Cornices are large, looming, and capable of triggering large avalanches when they fail.
The mid-pack is firm and well settled. Some faceted snow and a decomposing melt-freeze crust can be found near the base of the snowpack.
Glide cracks releasing as full depth glide slab avalanches become more common in the spring and are extremely difficult to predict. Best practice is to avoid slopes with glide cracks.
Terrain and Travel
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
- Wind slabs may be poorly bonded to the underlying crust.
- Be alert to conditions that change with elevation and sun exposure.
- Avoid exposure to slopes that have cornices overhead.
Problems
Wind Slabs
Convective flurries on Sunday and southwesterly winds may form small wind slabs sitting on slippery crusts on lee features below alpine ridgetops.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Cornices
Cornices are large and looming along many ridgelines. They are capable of triggering large avalanches when they fail.
Aspects: North, North East, East, South East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 4th, 2021 4:00PM
