Avalanche Forecast

Issued: Nov 30th, 2013 3:00PM

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

jeremy.mackenzie, Alberta Parks

Kananaskis.

Windy and snowy conditions are expected Sunday and Monday. Danger levels will rise as the storm intensifies, so keep an eye on changing conditions. Current weather models predict significant snow accumulations (15 to 20cm) by late Sunday afternoon.

Summary

Confidence

Fair - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

Up to 15cm of new snow expected by the end of the day on Sunday, with a further 10cm on Monday. Winds will be moderate to strong from the West and temperatures will cool down dramatically on Monday.

Avalanche Summary

Nothing new.

Snowpack Summary

Little change in past 24hrs.

Problems

Persistent Slabs

Avalanches initiated in the snowpack are likely to fail on the basal October crust and involve the entire winters snowpack.

Be aware of the potential for wide propagations due to the presence of hard windslabs.>Be aware of thin areas that may propogate to deeper instabilites.>Avoid thin, rocky or sparsely-treed slopes.>

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

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

2 - 5

Storm Slabs

Storm slabs will begin to form on Sunday if forecasts come true. This storm will bury a variety of previous surfaces including surface hoar and sun crust. Fresh storm slabs will be easy to trigger in steep terrain.

Avoid freshly wind loaded features.>Caution in lee and cross-loaded terrain near ridge crests.>

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

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

1 - 4

Valid until: Dec 1st, 2013 2:00PM