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Archived

Avalanche Forecast

Feb 1st, 2012–Feb 2nd, 2012
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
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

The biggest concern today are the alpine features and start zones which have been heavily loaded over the past week with over 100cm of storm snow. As skies clear choose your routes well. Ski quality is good in sheltered areas. Watch tree wells.

Avalanche Problems

Storm Slabs

80-100cm of storm snow is still reactive, although becoming more stubborn. Large propagations are possible, especially in alpine start zones and lee features. Below treeline, pockets of soft slab and loose snow sluffs are running far and fast.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Wind Slabs

Significant wind loading onto lee slopes over the past week have created hard and soft wind slabs. These are most touchy in start zones, and have potential to propagate widely.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 2 - 3

Cornices

Sustained southerly-SW winds have formed large cornices capable of triggering deep layers and large avalanches.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 3 - 4