Avalanche Forecast

Issued: Nov 25th, 2011 4:08PM

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

max darrah, Parks Canada

Jasper.

Unusually dangerous early season avalanche conditions are widespread at all elevations in many places in Jasper - use extreme caution if traveling in the mountains this weekend.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Problems

Storm Slabs

Gusty and variable winds have formed storm slabs on all aspects at upper elevations, especially in exposed areas. A widespread natural cycle was observed on Thursday, and explosive control work produced numerous avalanches to size 2.5.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Very Likely

Expected Size

1 - 3

Wind Slabs

The recent storm snow sits on previous wind slabs on lee features and has the potential to produce large avalanches if triggered.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

2 - 4

Valid until: Nov 26th, 2011 4:00PM