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Archived

Avalanche Forecast

Apr 10th, 2012–Apr 11th, 2012
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
4: High
The avalanche danger rating below treeline will be high
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: 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.

Avalanche 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