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Archived

Avalanche Forecast

Nov 14th, 2011–Nov 15th, 2011
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

Avalanche Problems

Storm Slabs

Up to a meter of storm snow and strong southerly winds have buried a touchy surface hoar layer. This layer is very reactive to skier traffic. Natural avalanches have been running long distances, reaching valley bottom and across skiers uptracks.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 2 - 3

Wind Slabs

An additional 20 cm of snowfall under the influence of steady strong southerly winds at ridgetop are loading snow onto lee slopes. Expect wind slabs on northerly aspects treeline to alpine. Numerous large or natural avalanches have been observed.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3