Archived

Avalanche Forecast

Feb 18th, 2012–Feb 19th, 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

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

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

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

Regions: Glacier.

Dribs and drabs of new snow are incrementally loading, and preserving, two touchy surface hoar layers. Another 5-10cm are expected today with SW winds gusting into transport range. Avalanche danger is rising with increasing load.

Avalanche Problems

Loose Dry

25cm of light snow preserves 2 touchy surface hoar layers. These layers sit on a crust on solar aspects, and facets elsewhere. Sluffing on steep slopes will travel far and fast, gaining mass. Loose avalanches are expected from extreme terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Wind Slabs

Thin wind slabs formed by SW winds are now buried by up to 25cm and will be harder to identify. Skiers have triggered windslabs in steep alpine terrain. These windslabs can be high consequence if over a cliff or terrain trap.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2