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Archived

Avalanche Forecast

Apr 9th, 2012–Apr 10th, 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
4: High
The avalanche danger rating in the alpine will be high
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

Regions: Glacier.

Natural avalanches will be triggered by daytime heating and solar radiation today. Plan your route to avoid terrain facing the sun especially in the afternoon.

Avalanche Problems

Loose Wet

Loose avalanches will start this afternoon in steep terrain facing the sun. Use extra caution below hot stops like rock outcrops and trees. Moist surface snow is a major clue the snowpack is weakening. Deeper weak layers could also be triggered.

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

Elevations: All elevations.

Likelihood: Very Likely

Expected Size: 1 - 3

Storm Slabs

60 to 70 cm of recent storm snow has settled into a cohesive slab above a late March crust. Failures within the slab have been observed recently. Sudden planar results are still being observed on this crust.

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

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3

Deep Persistent Slabs

The Feb 8 surface hoar is still worth keeping in mind. No recent failures have been observed on this layer. Cornice fall or an avalanche in the storm snow layers may step down to this layer.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely

Expected Size: 2 - 4