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Archived

Avalanche Forecast

Jan 24th, 2016–Jan 25th, 2016
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

http://www.pc.gc.ca/apps/scond/Cond_E.asp?oID=22583&oPark=100205Watch for windslab along alpine and treeline lee features.

Weather Forecast

Over the next couple days cooling alpine temperatures and light westerly winds are forecast with little in the way of precipitation. 

Snowpack Summary

Field observations yesterday showed evidence of wind loading at and above treeline. Online info reports whumphing in sheltered locations with the suspect layer being either the storm/old snow interface or the Jan 4th persistent weak layer.

Avalanche Summary

With the good light yesterday morning there were numerous new avalanche observations in the highway corridor. All these slides were attributed to the avalanche cycle of January 22nd.

Confidence

Due to the number of field observations

Avalanche Problems

Wind Slabs

Widespread wind effect observed in the alpine formed by moderate southerly winds Jan 22. Triggerable windslab may be found along alpine and treeline lee features.
Watch for whumpfing, hollow sounds, and shooting cracks.Use caution in lee areas. Recent wind loading has created wind slabs.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Persistent Slabs

The January 4th interface is getting deep enough in the snowpack to be less reactive to skier loads. If storm slabs are triggered the load may be sufficient to wake the Jan 4th up.
Carefully evaluate and use caution around thin snowpack areas.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 3