Archived

Avalanche Forecast

Feb 10th, 2012–Feb 11th, 2012

Alpine

2: Moderate

The avalanche danger rating in the alpine will be moderate

Treeline

1: Low

The avalanche danger rating at treeline will be low

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

1: Low

The avalanche danger rating at treeline will be low

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

1: Low

The avalanche danger rating at treeline will be low

Below Treeline

1: Low

The avalanche danger rating below treeline will be low

Regions: Glacier.

A weak warm front moves over the Columbia today bringing mostly cloud with some possibility of isolated flurries. Similar for Saturday with an upper trough providing possible flurries. Expect some sunny breaks, milder temps and freeze level to 800m

Avalanche Problems

Wind Slabs

Moderate to strong winds earlier in the week formed breakable to hard slabs in the alpine and open TL slopes. Watch for touchy thin slabs on convex rolls and areas of down flow winds. A skier was pushed by a small slide on Wed in cliff terrain.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Cornices

Cornices are large, and are unpredictable. Recent large cornice failures have not all produced slab avalanches. The hard mass from the cornice fell as size 2.5 to 3.0 fast moving avalanches running onto fans.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 3