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Archived

Avalanche Forecast

Mar 26th, 2012–Mar 27th, 2012
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
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
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: Glacier.

A storm forecast for this afternoon and evening could bring heavy precipitation with high freezing levels. Avalanche danger will deteriorate rapidly with these conditions.

Avalanche Problems

Deep Persistent Slabs

Use extra caution on large alpine slopes. Choose well-supported terrain and pay attention to signs of instability. A snowpack weakness is buried down 1.5 to 2 m. Consequences are high if this layer does fail.

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

Elevations: All elevations.

Likelihood: Unlikely

Expected Size: 1 - 3

Wind Slabs

Wind slabs and loaded pillows could possibly be triggered by skiers on steep, convex terrain. This is most likely where a crust formed down 30-40 cm. Slabs formed at ridge lines and cross loaded features.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Cornices

Most ridges throughout the Park have massive cornices. New snow this afternoon and evening could trigger these large snow masses. Cornice failure is unpredictable. Be aware of the overhead hazard on your approach.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 2 - 4