Avalanche Forecast

Issued: Jan 24th, 2016 8:03AM

The alpine rating is considerable, the treeline rating is moderate, and the below treeline rating is moderate. Known problems include Wind Slabs and Persistent Slabs.

Parks Canada percy woods, Parks Canada

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

Summary

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

Problems

Wind Slabs

An icon showing 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

An icon showing 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

Valid until: Jan 25th, 2016 8:00AM