Archived

Avalanche Forecast

Mar 30th, 2012–Mar 31st, 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

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.

Watch out for wind slabs on Northern aspects and moist snow at low elevations.

Avalanche Problems

Wind Slabs

South winds at 35-60km/h persisted for a 4 hour period this morning. Wind slabs may have formed on lee aspects where storm snow has been transported.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Storm Slabs

15-25cm of storm snow is forming a soft slab which is sitting on a sun crust on solar aspects and a melt freeze crust and moist snow below treeline.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3

Deep Persistent Slabs

The February weak layer is buried down 1.5 to 2 m. This layer may be triggered by a heavy load such as a cornice failure or an avalanche in the upper snowpack. Consequences are high if this layer does fail.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely

Expected Size: 1 - 3