Avalanche Forecast

Issued: Dec 1st, 2011 4:00PM

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

brian webster, Parks Canada

Banff Yoho Kootenay.

A skier triggered avalanche in West Bowl (near Lake Louise) indicates that despite the lack of recent natural avalanche activity skier triggered avalanches are still possible. Safe travel and conservative decision making is still required.

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Problems

Persistent Slabs

60 to 100 cm of recent storm snow lies overtop of basal facets. Natural avalanche activity has subsided. Whoomphing in the alpine indicate that the snowpack is still reactive to skier triggering and the potential for full depth releases still exist.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Possible - Likely

Expected Size

2 - 3

Wind Slabs

High winds today have created fresh wind slabs on lee terrain. Suspect these slabs are reactive to skier triggering.

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

Elevations: Alpine.

Likelihood

Possible - Likely

Expected Size

2 - 3

Valid until: Dec 2nd, 2011 4:00PM