Archived

Avalanche Forecast

Feb 26th, 2012–Feb 27th, 2012

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

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

Regions: Glacier.

Weak layers are becoming harder to trigger, or on some slopes have already failed, which will increase confidence. However when they fail the consequences are high: these layers are now a meter deep and will propagate producing large avalanches.

Avalanche Problems

Persistent Slabs

This weeks meter of storm snow is settling into a cohesive slab. This overlies 2 touchy layers. Recent tests indicate that these layers are triggerable by skiers, and they will propagate widely. They may be triggered from a distance.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely

Expected Size: 2 - 3

Wind Slabs

Southerly winds during the storm transported snow, creating fat windloaded pockets and thick windslabs on exposed slopes at treeline and above. These may be triggered by skiers and may step down to the persistent weak layers below.

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

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 1 - 3