Archived

Avalanche Forecast

Nov 26th, 2011–Nov 28th, 2011

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

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

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

Regions: Jasper.

Dangerous early season avalanche conditions exist and may become worse by Sunday due to a forecasted storm - travel in avalanche terrain is not recommended.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Intensity of incoming weather systems is uncertain on Sunday

Avalanche Problems

Wind Slabs

Gusty and variable winds have formed wind slabs on all aspects at upper elevations, especially in exposed areas. Field teams observed widespread whumphing and shooting cracks while traveling in simple terrain today - two good signs of instability.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 3

Storm Slabs

20-35cm of new snow is expected to fall in the Columbia Icefields Area by early Sunday morning, accompanied by strong winds. This will produce widespread storm slabs that will be easily triggered by light loads.

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

Elevations: Alpine, Treeline.

Likelihood: Likely - Very Likely

Expected Size: 2 - 4