Archived

Avalanche Forecast

Dec 15th, 2011–Dec 16th, 2011

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

1: Low

The avalanche danger rating below treeline will be low

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

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

Regions: Glacier.

Avalanche Problems

Loose Dry

Expect fast sluffing in steep terrain, failing on large surface hoar crystals. Up to 20cm of loose surface snow can move once this layer fails.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 2

Deep Persistent Slabs

Areas of thin snow cover exist with weak crystals over an early season crust. Glide cracks with potential to procduce large slab avalanches are showing up throughout the area at all elevations. Glide crack releases are hard to predict

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely

Expected Size: 2 - 4

Wind Slabs

Isolated wind slabs exist in the immediate leeward areas on ridge crests but are stubborn to trigger.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2