Avalanche Forecast

Issued: Jan 10th, 2012 5:43PM

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

landon shepherd, Parks Canada

Jasper.

Strong north winds and cooler temperatures will create poorly bonded windslabs on south facing features.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Due to the number and quality of field observations

Problems

Wind Slabs

Strong north winds at higher elevations will continue to rearrange the windslab pattern from NE to more south facing slopes. Recent additional snow in the Icefields area will be moved to lee features.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Deep Persistent Slabs

Large avalanches could occur where smaller avalanches or cornice failures trigger a collapse in deep basal facets. A strong midpack is bridging this layer, except near wind exposed terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Unlikely - Possible

Expected Size

2 - 4

Valid until: Jan 11th, 2012 4:00PM