Avalanche Forecast

Issued: Nov 10th, 2012 4:37PM

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

snow safety, Parks Canada

Banff Yoho Kootenay.

Travel is generally good, but it is still early season and the consequences of even a small ride could be very serious.

Summary

Weather Forecast

Cold temps will last for one more day before a weak NW to Westerly shift will bring some light precipitation and milder temperatures for Monday

Snowpack Summary

Facetting and slow storm snow settlement with cold temps. The November 6 crust is weak above 22000m but more developed at lower treeline elevations. I Isolated wind slabs in open areas.

Avalanche Summary

A large deep slabÂ avalanche was observed on the N Face of Mt.Haddo near Lake Louise that likely failed on old firn snow. This avalanche was a 3 and occurred on Wed., but shows that in the right location in the alpine things may not be so stable.Â

Confidence

Intensity of incoming weather systems is uncertain on Monday

Problems

Wind Slabs

Wind slabs 20-50cm thick near lees of ridgecrests are sitting on the Nov.6 crust or within the storm snow above.� These are currently very isolated in nature, but can be found on all aspects due to the easterly winds.

Avoid exposure to terrain traps where the consequences of a small avalanche could be serious.Avoid travelling on ledges and cliffs where sluffing may have severe consequences.

Aspects: All aspects.

Elevations: Alpine.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Valid until: Nov 11th, 2012 4:00PM