Archived

Avalanche Forecast

Dec 6th, 2011–Dec 7th, 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

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

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.

Natural avalanche activity has dropped off. However, weak basal facets are still present on all slopes that have not yet slid this year. Triggering of this weakness could result in a full path avalanche. Stick to smaller more manageable terrain.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable on Wednesday

Avalanche Problems

Deep Persistent Slabs

These slabs are sitting over a weak basal facet layer. Most large avalanches that have been observed recently have been on this layer. It can be most easily triggered from shallow areas on the edge of fatter slopes.

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

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 2 - 3

Wind Slabs

This layer continues to settle and is becoming less of a concern. Steep cross loaded or lee slopes are likely trigger zones. Alpine snowpack depth remains highly variable. At treeline and below, travel is good and the snowpack is supportive.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3