Avalanche Forecast

Issued: Apr 10th, 2012 8:33AM

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

eric dafoe, Parks Canada

Glacier.

Freezing levels rise as high as 3500m today and Wednesday, before cooling on Thursday. Above freezing temperatures and early morning solar are affecting the upper elevation slopes. Watch for moist surface snow and consider overhead hazards.

Summary

Problems

Loose Wet

Loose avalanches will start this morning in steep terrain facing the sun. Early morning solar and little overnight freezing means this avalanche activity will start early AM. Use extra caution below rock outcrops and trees.

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

Elevations: All elevations.

Likelihood

Very Likely

Expected Size

1 - 3

Wet Slabs

The storm snow from last week has settled into a cohesive slab above the March 27 crust. Slabs failures on this layer were observed early this morning on south aspects above tree line. Loose moist avalanches today are likely to trigger this layer.

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

Elevations: All elevations.

Likelihood

Likely

Expected Size

2 - 3

Deep Persistent Slabs

The Feb 8th layer is a concern again as large moist avalanches dig to deeper layers. Cornice fall and large glide crack releases are more likely under rapid warming conditions.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely

Expected Size

2 - 4

Valid until: Apr 11th, 2012 8:00AM