Archived

Avalanche Forecast

Dec 11th, 2011–Dec 12th, 2011

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

1: Low

The avalanche danger rating below treeline will be low

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

1: Low

The avalanche danger rating below treeline will be low

Alpine

2: Moderate

The avalanche danger rating in the alpine will be moderate

Treeline

2: Moderate

The avalanche danger rating at treeline will be moderate

Below Treeline

1: Low

The avalanche danger rating below treeline will be low

Regions: Jasper.

The snowpack is stabilizing however now is not the time to be venturing onto or under big steep slopes.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Due to the number of field observations

Avalanche Problems

Wind Slabs

There is a veneer of wind slab on lee slopes ranging from soft slab to hard slab and sastrugi. Human triggering is possible which may then step down to the basal facet layer resulting in a large full path avalanche.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3

Deep Persistent Slabs

The slabs above the basal facets can be triggered where the snowpack is shallow and along the edges of deeper slopes.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 2 - 3