Avalanche Forecast

Issued: Jan 3rd, 2012 5:01PM

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.

Cornices and windslabs are building at ridgecrests with continued strong winds and warm temperatures.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain on Wednesday

Problems

Wind Slabs

Windslabs present in all sheltered lee features, evaluate local wind effect.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Deep Persistent Slabs

On Sunday, a large cornice failure on Kitchener ridge triggered a size 3 avalanche that ran 800m on moderate angle terrain. Cornices are large and precarious right now from winds and warm temperatures.

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

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

2 - 4

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