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Avalanche Forecast

Dec 12th, 2011–Dec 13th, 2011
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
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
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Northwest Inland.

Confidence

Fair - Intensity of incoming weather is uncertain

Weather Forecast

Tuesday: We could wake up to 5cm of new snow. During the day brings another 5cm with strong ridgetop winds, and steady -6 valley bottom temperatures. Wednesday: Cloudy with a chance of flurries. Thursday: Mix of sun and clouds, ridgetop winds light from the south with valley temperatures near -10.

Avalanche Summary

No recent avalanche activity has been reported.

Snowpack Summary

Up to 5 cm of new snow fell on Sunday night. Over the weekend a few cm's of snow fell.The snowpack surfaces are variable. For the most part all aspects between 900m-2000m have a hard melt freeze crust. This crust is widespread and is lingering in most start zones. This may be a suspect layer of concern as when future storms with significant snow and wind arrive. Above this crust surface hoar (feathery crystals) and facets (sugary crystals) are forming. This exists at treeline and below treeline elevations. The recent winds in the alpine have destroyed the surface hoar eliminating one problem but creating a wind slab problem. These wind slabs are in the immediate lee of features, with easy shears and cracking being reported. The midpack seems to be well settled and strong. Thanks to those who have sent in field observations. If you have any info from the field, we would love to hear from you. Write to us at forecaster@avalanche.ca

Avalanche Problems

Wind Slabs

Expect new wind slabs on northeasterly aspects. Loading may occur lower on the slopes due to forecast high winds in some parts of the region.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 3