Avalanche Forecast

Issued: Feb 23rd, 2012 4:31PM

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

brian webster, Parks Canada

Banff Yoho Kootenay.

More snow is forecasted for Friday night and Saturday morning. This new snow will increase the avalanche hazard for Saturday.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Intensity of incoming weather systems is uncertain on Friday

Problems

Persistent Slabs

At treeline 40-50 cm of settled storm snow sits overtop of the Feb. 14 surface hoar. Althought the natural cycle we saw yesterday is over these slabs remain reactive to skier triggering. This surface hoar problem will not go away quickly.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely - Very Likely

Expected Size

2 - 3

Wind Slabs

Moderate to strong winds in the past 48 hours have created touchy wind slab conditions on lee terrain in the alpine.

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

Elevations: Alpine.

Likelihood

Likely

Expected Size

1 - 2

Valid until: Feb 24th, 2012 4:00PM