Avalanche Forecast

Issued: Nov 27th, 2014 4:00PM

The alpine rating is high, the treeline rating is high, and the below treeline rating is moderate. Known problems include Storm Slabs and Loose Dry.

rupert wedgwood, Parks Canada

Jasper.

In the midst of big storm. Critical loads have been reached.

Summary

Weather Forecast

Storm is continuing to bring up to 30cm more snow and moderate winds till at least Friday morning. Winds will switch from S to NE . A cold front will bring clear skies and cold temperatures lasting throughout the weekend.

Snowpack Summary

40 to 70cm of snow has fallen in the alpine and this will have drifted with the winds. This storm snow overlies a weak snowpackÂ consisting of rain crusts and facets. Suspected wind affect and soft slabsÂ at tree line and above.

Avalanche Summary

Loose avalanches to size 2 at all elevations. Soft slab avalanches suspected at and above tree line to 2.5

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Friday

Problems

Storm Slabs

Soft slabs in wind loaded areas up to 40 cm in the alpine overlying a variety of weak layers. Critical loading has been reached and natural avalanche cycle in on the way.

Avoid all avalanche terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely - Very Likely

Expected Size

1 - 3

Loose Dry

Large sloughs can be expected in all steep terrain and gully features.

Avoid all avalanche terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Very Likely

Expected Size

1 - 2

Valid until: Nov 28th, 2014 4:00PM