Avalanche Forecast

Issued: Nov 21st, 2015 4:00PM

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

snow safety, Parks Canada

Banff Yoho Kootenay.

Watch for wind slabs in exposed terrain on high alpine slopes, especially where they may overly facets. Two storms have formed most of the current snowpack, and it is a very supportive snowpack considering it is only November. Great ski conditions!

Summary

Weather Forecast

Sunday is expected to be moderately cool with a few flurries. 10 cm of snow and swirly winds are expected Monday night.

Snowpack Summary

80-100cm of supportive snow can be expected at treeline. Above treeline there is extensive wind slab development. The wind slabs are a concern in thin snow pack areas or where underlain by weak facets. T

Avalanche Summary

No new avalanche observations.

Confidence

Problems

Wind Slabs

In thicker snowpack areas wind slabs have formed over previous storm snow and are less sensitive to triggering. In thinner snowpack areas these may be lying over weaker basal facets formed in late fall, and be more sensitive to skier triggering.

Use caution in lee areas. Recent wind loading has created wind slabs.

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

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 3

Valid until: Nov 22nd, 2015 4:00PM