Avalanche Forecast

Issued: Feb 21st, 2012 4:41PM

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

brian webster, Parks Canada

Banff Yoho Kootenay.

The avalanche danger level has increased dramatically since the weekend. Now is the time for conservative route choices.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Due to the number and quality of field observations

Problems

Storm Slabs

Up to 35 cm of settled storm snow overrides the Feb. 12 surface hoar. The surface hoar is wide spread and the storm snow is reactive to skier triggering. This problem is expected to get worse before it gets better.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely - Very Likely

Expected Size

1 - 3

Wind Slabs

Strong north west winds forecasted for Tuesday night and Wednesday will create fresh wind slabs in the alpine. These slabs are expected to be reactive to skier triggering.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood

Possible - Likely

Expected Size

1 - 3

Valid until: Feb 22nd, 2012 4:00PM