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Archived

Avalanche Forecast

Feb 19th, 2012–Feb 20th, 2012
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
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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

Regions: Glacier.

Winds at tree-line and alpine areas in the loading values may have formed soft slabs. The new snow and these slabs are resting on the Feb 9th surface hoar layer. Use caution and test the slopes before you ski or board them.

Avalanche Problems

Loose Dry

30cm of light snow preserves 2 touchy surface hoar layers. These layers sit on a crust on solar aspects, and facets elsewhere. Sluffing on steep slopes will travel far and fast, gaining mass. Loose avalanches are expected from extreme terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Wind Slabs

Thin wind slabs formed by SW winds are now buried by up to 45cm and will be harder to identify. Skiers have triggered windslabs in steep alpine terrain. These windslabs can be high consequence if over a cliff or terrain trap.

Aspects: North, North East, East, South East, South, South West.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 3