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Archived

Avalanche Forecast

Feb 12th, 2013–Feb 13th, 2013
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
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
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.

Incoming weather is increasing the avalanche hazard, be more conservative in your terrain selection.

Weather Forecast

Westerly flow is bringing light to moderate amounts of precipitation with associated west winds into Wednesday morning. Passage of front this evening will bring most of precipitation. A ridge builds on Wednesday with cooler temperatures and drier conditions.

Snowpack Summary

Newly buried sun crust on solar aspects and surface hoar under 5cm of new snow. 10-30 cm of ski penetration over a well settled mid pack. Profiles on east aspect of Bruins Ridge showed moderate resistant planar results down 23cm. On the west aspect, hard broken test results down 27 and 37cm.

Avalanche Summary

From yesterday morning a natural size 3 slab avalanche off of Mt Leda in the Asulkan valley. 2600m, NE aspect wind loaded ridgetop release, possibly cornice triggered, 40-60cm slab avalanche running ~700m.1 size 2 natural slab east of the Rogers Pass summit in the highway corridor.

Confidence

Intensity of incoming weather systems is uncertain

Avalanche Problems

Wind Slabs

Winds have remained in the moderate range and are forecast to increase with this incoming storm.
Caution in lee and cross-loaded terrain near ridge crests.Avoid freshly wind loaded features.

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

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 2