Avalanche Forecast

Issued: Dec 2nd, 2011 4:19PM

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

mike eder, Parks Canada

Jasper.

Highway 93 N open as of 16:00 on Friday. Avalanche control produced several deep slab avalanches today.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Due to the number and quality of field observations on Friday

Problems

Deep Persistent Slabs

Avalanche control produced several large ground releases today. Recent winds have overloaded this layer.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

2 - 3

Wind Slabs

Steep cross loaded or lee slopes are likely slab trigger zones. In the alpine the snowpack depth is highly variable. At tree line travel is good and the snowpack supportive.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 3

Valid until: Dec 3rd, 2011 4:00PM