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Archived

Avalanche Forecast

Feb 3rd, 2014–Feb 4th, 2014
Alpine
1: Low
The avalanche danger rating in the alpine will be low
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
1: Low
The avalanche danger rating in the alpine will be low
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
1: Low
The avalanche danger rating in the alpine will be low
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 - Due to the number of field observations

Weather Forecast

Tonight and Tuesday: Cold and clear conditions will prevail over the Northwest region. Winds are forecasted to be strong from the NE and alpine temperatures to be around -22 C.Wednesday: A weak upper trough is expected to give a mix of sun and cloud. Moderate winds from the E-SE are forecasted with alpine temperatures warming up slightly to around -17 C.Thursday: A similar pattern should persist with lighter winds from the SE with clear skies. 

Avalanche Summary

A skier triggered slab avalanches size 1 in a thin windslab was reported yesterday.

Snowpack Summary

5-10 cm of dry snow has been redistributed by strong winds from the NE-SE winds creating pockets of relatively thin windslabs on immediate lee features in the alpine and at treeline. These windslabs are sitting on weak surfaces like a crust or on the late January surface hoar layer. It has been reported that they are reactive to skier traffic. A well settled mid and lower snowpack is resting on basal facets, which is a concern especially in thin snowpack areas at higher elevations. At the surface of the snowpack, there is widespread growth of surface hoar and surface facetting which should continue with the forecasted clear and cold temperatures.