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Archived

Avalanche Forecast

Feb 21st, 2012–Feb 22nd, 2012
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
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
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: Little Yoho.

The avalanche danger level has increased dramatically since the weekend. Now is the time for conservative route choices.

Avalanche Problems

Storm Slabs

Up to 35 cm of settled storm snow overrides the Feb. 12 surface hoar. The surface hoar is wide spread and the storm snow is reactive to skier triggering. This problem is expected to get worse before it gets better.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 3

Wind Slabs

Strong north west winds forecasted for Tuesday night and Wednesday will create fresh wind slabs in the alpine. These slabs are expected to be reactive to skier triggering.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 3