Archived

Avalanche Forecast

Dec 4th, 2011–Dec 5th, 2011

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

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

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

1: Low

The avalanche danger rating below treeline will be low

Regions: Banff Yoho Kootenay.

With another skier remote size 3 today and more field tests at treeline, we have little confidence in the snowpack stability, keep to conservative routes on small features and carefully evaluate consequences if you were to trigger an avalanche. LP

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable

Avalanche Problems

Persistent Slabs

Another skier remote near Lake Louise (photo on the MCR) size 3. They were returning for their 2nd run when they triggered the slope they just skied from the ridge above. They remote triggered a windslab, which triggered the deeper slab.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Likely

Expected Size: 2 - 3

Wind Slabs

It's remains possible to trigger this layer, especially in the alpine. Be especially cautious with any windloaded features.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 2 - 3