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Archived

Avalanche Forecast

Jan 2nd, 2012–Jan 3rd, 2012
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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
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
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

Regions: Glacier.

No new snow over the last 24 hours. HS at Fidelity 256cm. Watch for effects of a strong inversion and intense sun on solar aspects.

Avalanche Problems

Persistent Slabs

Dec 24 SH down 80cm and Dec. 11 SH down 150 cm are less touchy than they were, but potential for wide, deep skier triggered avalanches on these layers is still a concern. A strong INVERSION today, combined with clear sunny skies may be a concern.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 2 - 4

Wind Slabs

Isolated wind slabs at ridge tops are reactive, causing whumphing and cracking in places like Avalanche Crest. Watch for stepdown into deeper buried surface hoar layers which are still reactive.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3

Deep Persistent Slabs

In the high alpine basal weaknesses exist and may cause large or very large avalanches. These may slide from large triggers or during periods of heavy storm loading. Large glide cracks failing near ground are also a significant concern this year.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 3 - 4