Archived

Avalanche Forecast

Mar 22nd, 2012–Mar 23rd, 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

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.

Avalanche Problems

Wind Slabs

Wind slabs and loaded pillows formed from strong S winds. Natural avalanches on steep N asp running full path. Slabs formed at ridge lines and cross loaded features. In some areas slabs are buried under 15-20cm of new snow.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Cornices

Most ridges throughout the Park have massive cornices. Fluctuating temperatures wind transport increase the potential for cornice failure. Cornice failure is unpredictable. Be aware of the overhead hazard on your approach.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 2 - 4

Deep Persistent Slabs

The Feb 9 surface hoar, sun crust, facet layer is now down 1.5-2 m. Skiers are unlikely to fail this layer, but consequences are high if this layer does fail. Cornice failure is the most likely trigger on this layer.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 2 - 4