Avalanche Forecast

Issued: Dec 2nd, 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.

Snow Safety, Parks Canada

Banff Yoho Kootenay.

The weak base of depth hoar is still the major concern. Lower angled terrain is now starting to support and offer good ski travel. Choose conservative routes and enjoy your weekend! JBW

Summary

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Problems

Persistent Slabs

Avalanches on the weak base of depth hoar and facets can easily be triggered with just slight additional load. Wind and skier triggered avalanches up to size 2.5 have occurred on all aspects in the last 48 hrs. Avoid steep wind effected terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

2 - 3

Wind Slabs

Westerly winds with gusts to over 125 km were recorded in the last 24 hrs. These winds were responsible for a fresh cycle of avalanche activity when the wind transported snow overloaded the weak base of depth hoar and full depth slabs released.