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Archived

Avalanche Forecast

Nov 12th, 2011–Nov 13th, 2011
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
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.

Avalanche Problems

Storm Slabs

Up to 60cm of storm snow has buried a surface hoar layer that is easily triggered. Avalanches were remotely triggered at treeline from 100m. Natural avalanches have been running long distances, nearly reaching valley bottom and even dusting uptracks.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 2 - 3

Wind Slabs

Recent ridge top winds from the south reached loading values. There is sufficient storm snow available for transport. This has likely created areas of wind slab over surface hoar on northerly aspects treeline to alpine.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3