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Archived

Avalanche Forecast

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

Rising winds and temperatures will contribute to slab development into Sunday. Watch for soft slabs today near ridge crests in the alpine and treeline.

Avalanche Problems

Wind Slabs

Strong S-SW winds associated with the previous storm created windslabs down 30-60cm. This is now burried under 20-30cm in Alpine and treeline areas which may make it difficult to identify. Moderate winds last night may have slabbed the upper snowpack

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 2 - 3

Persistent Slabs

60-80cm of storm snow now rests on the cold snow Jan 20th interface. This layer can still be triggered by skiers or as a step down avalanche.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 2 - 4