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Archived

Avalanche Forecast

Feb 20th, 2012–Feb 21st, 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
1: Low
The avalanche danger rating below treeline will be low
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
30-50 cm over the Valentine's surface hoar/suncrust along & west of the Divide. Another system expected Tuesday night bringing another 10-20 cm. & moderate NW wind. The hazard will increase as the slab thickens and consolidates.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Intensity of incoming weather systems is uncertain

Avalanche Problems

Wind Slabs

35 cm in last 2 days around Sunshine, expect similar amounts along the divide & West. So far, only size 1 soft slabs have been triggered. As the slab (30-50 cm thick) consolidates with settlement & wind effect, larger avalanches can be expected.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2