Avalanche Forecast

Issued: Dec 5th, 2011 4:00PM

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

garth lemke, Parks Canada

Jasper.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable on Tuesday

Problems

Deep Persistent Slabs

Avalanche control produced several large ground releases on Friday. Wind action will continue to provide the potential to overload this layer naturally. A skier triggering this layer would result in a large avalanche.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

2 - 3

Wind Slabs

This layer continues to settle and is becoming less of a concern. Steep cross loaded or lee slopes are likely trigger zones. Alpine snowpack depth remains highly variable. At tree line travel is good and the snowpack supportive.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Valid until: Dec 6th, 2011 4:00PM