Avalanche Forecast

Issued: Mar 25th, 2012 6:13PM

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

Aaron Beardmore, Avalanche Canada

Little Yoho.

By Tues, accumulations of up to 20cm can be expected in the alpine. Currently this is not enough to alter the danger ratings. Today a skier remote size 2 was reported on the Crowfoot Glacier on a N aspect. There is still potential out there.

Summary

Problems

Persistent Slabs

The Valentines surface hoar is 70-150cm down. Avalanche control was still producing the odd slide on this layer today. Typically from steep terrain with a shallow snowpack.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

2 - 3

Deep Persistent Slabs

Although difficult to initiate, it is still possible to trigger a deep persistent slab. Heavy loads in steep terrain with shallow snow are the most likely areas to produce an avalanche on this layer.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 3

Valid until: Mar 26th, 2012 5:00PM