Archived

Avalanche Forecast

Dec 2nd, 2011–Dec 5th, 2011

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

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

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: Waterton Lakes.

13 cm of new snow Wednesday and Thursday and cooler temperatures make travel conditions more appealing for the weekend. For this early in the season we have surprisingly good conditions.

Avalanche Problems

Wind Slabs

13cm snow mid week has been redistributed by moderate to strong westerly winds in alpine and tree line areas and it would be possible for a skier to trigger a slab avalanche in cross loaded or lee terrain in alpine and tree line areas.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Deep Persistent Slabs

Evidence of this weak layer was observed Friday on a south aspect at 2250 meters, though the 60 cm strong mid pack in deep snow areas will likely bridge it well. Avoid shallower snowpack areas where it still could be possible to trigger.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 2 - 3