Avalanche Forecast

Issued: Nov 23rd, 2011 4:12PM

The alpine rating is high, the treeline rating is high, and the below treeline rating is considerable. Known problems include Storm Slabs and Wind Slabs.

brian webster, Parks Canada

Banff Yoho Kootenay.

Clearing skies and a cooling trend is forecast for Thur and Fri. Don't be tempted by the clear skies, dangerous avalanche conditions will persist for the near future.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Problems

Storm Slabs

30-50 cm of storm snow has fallen in the past 48 hours. This storm snow in combination with strong southerly winds have created touchy avalanche conditions at the treeline and above elevations.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

2 - 3

Wind Slabs

Strong southerly winds associated with the recent storm has created widespread wind slab conditions in the alpine. These slabs are responsible for several natural avalanches observed today and are reactive to skier triggering.

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

Elevations: Alpine, Treeline.

Likelihood

Likely - Very Likely

Expected Size

2 - 3

Valid until: Nov 24th, 2011 4:00PM