Avalanche Forecast

Issued: Feb 10th, 2015 4:00PM

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

deryl kelly, Parks Canada

Jasper.

The natural cycle has slowed down. Carefully evaluate the near surface interfaces for localized instability before committing to your line!

Summary

Weather Forecast

Broken skies and warm temps expected over the day on Wednesday. Seems to be a steady stable weather pattern without to much variance for the week.

Snowpack Summary

Huge variation in the snowpack across the forecast region. The Icefields Area snowpack is getting small inputs overnight to add to the storm snow from the weekend and is settling out with some transport at ridgetop. There is a variable storm slab sitting over the Jan 29 rain crust on all aspects at treeline and above.

Avalanche Summary

Minor sluffing continues out of steep terrain.

Confidence

Due to the number of field observations

Problems

Storm Slabs

Natural activity has settled down but approach any slopes with caution before jumping in.

Use caution in lee areas in the alpine and treeline. Recent storm snow has formed touchy slabs.If triggered the storm slabs may step down to deeper layers resulting in large avalanches.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Possible

Expected Size

1 - 3

Deep Persistent Slabs

This layer remains a concern in isolated areas above treeline and may be triggered by large loads.

Avoid steep slopes below cornices.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Valid until: Feb 11th, 2015 4:00PM