Archived

Avalanche Forecast

Jan 20th, 2012–Jan 21st, 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

2: Moderate

The avalanche danger rating below treeline will be moderate

Alpine

4: High

The avalanche danger rating in the alpine will be high

Treeline

4: High

The avalanche danger rating at treeline will be high

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

4: High

The avalanche danger rating at treeline will be high

Below Treeline

3: Considerable

The avalanche danger rating below treeline will be considerable

Regions: Glacier.

The forecast calls for 40cm of new snow by Sat. PM The new snow is very light density. Temperatures are forecast to rise rapidly today and winds will be in the transport range through the weekend. Watch for rapid loading and rising temps today.

Avalanche Problems

Loose Dry

10 cm of very light density new snow fell overnight on top of soft slabs with small facets on top of the slabs. Expect another 5-10cm today and 15cm overnight with rising temperatures. The new snow will sluff in steep terrain and slab as temps rise.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2

Wind Slabs

South winds have produced slabs on exposed terrain from below tree line to alpine ridges. Thursday winds were from the NE. Most slabs are 10-15cm deep and now buried down 10-15cm. Watch cross loaded and gully features today.

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

Elevations: All elevations.

Likelihood: Possible

Expected Size: 2 - 3