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Archived

Avalanche Forecast

Mar 28th, 2012–Mar 29th, 2012
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

Mild temperatures are keeping the lower elevations unstable. Glide cracks are a concern where present, they have been releasing large avalanches and may catch you by surprise.

Avalanche Problems

Loose Wet

Warm overnight temperatures over the last 3 nights prevented the snowpack from refreezing at lower elevations. Yesterdays solar radiation produced numerous avalanches and the same rapid deterioration can be expected today if the sun shines.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Deep Persistent Slabs

The February weak layer is buried down 1.5 to 2 m. This layer has been reacting infrequently to skier triggering particularly at treeline elevations. Consequences are high if this layer does fail.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely

Expected Size: 1 - 3

Cornices

Be aware of the overhead cornice hazard on your approach. The sun at this time of year is quite strong when it comes out and may be enough to release cornices. They are large triggers and could produce avalanches on the deeper instabilities.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 2 - 4