Avalanche Forecast

Issued: Dec 22nd, 2011 4:29PM

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

a.l. horton, Parks Canada

Jasper.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable on Friday

Problems

Wind Slabs

The alpine is mostly blown bare with hard windslabs and loaded lee slopes that can be easily identified and avoided. Windslabs are present in lee features at Treeline.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Deep Persistent Slabs

Basal facet collapses are still being noted below midpack bridging layers. Shallow snowpack areas and rocky outcrops are likely trigger locations.

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

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

2 - 3

Valid until: Dec 23rd, 2011 4:00PM