Avalanche Forecast

Issued: Jan 28th, 2013 4:44PM

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

brian webster, Parks Canada

Banff Yoho Kootenay.

Summary

Weather Forecast

Light snow (with little accumulation) and cool temperatures are forecasted through Friday.Â

Snowpack Summary

In alpine there is 20-25 cm of recent storm snow sitting on previous hard wind slabs and wind pressed snow. Some soft slab development has occurred in lee terrain near ridge tops. In shallow snow pack areas the mid-pack is facetting and loosing strength.

Avalanche Summary

No recent avalanches activity observed.

Confidence

Intensity of incoming weather systems is uncertain

Problems

Wind Slabs

Isolated soft slabs have developed in lee terrain near ridge tops.

Be cautious as you transition into wind affected terrain.

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2

Persistent Slabs

Hard slabs from last weeks winds persist (beneath recent storm snow) in alpine and treeline terrain. These slabs are unreactive to skier triggering, but whomphing and compression tests in the moderate range are being observed on this layer.

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

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 2

Valid until: Jan 29th, 2013 4:00PM