Avalanche Forecast

Issued: Nov 19th, 2011 4:00PM

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

max darrah, Parks Canada

Jasper.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing of incoming weather systems is uncertain

Problems

Wind Slabs

Slopes below ridge lines and on cross loaded features between 2600 and 2900m have produced natural avalanches in the past 48 hours.

Aspects: North, North East.

Elevations: Alpine.

Likelihood

Possible - Likely

Expected Size

1 - 3

Persistent Slabs

Slabs created by previous Moderate W to NW winds overlay weak basal facets. A large load (surface avalanche, numerous skiers on the slope) could trigger this layer.

Aspects: North, North East.

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

2 - 3

Valid until: Nov 20th, 2011 4:00PM