Archived

Avalanche Forecast

Jan 11th, 2012–Jan 12th, 2012

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: Banff Yoho Kootenay.

Cold clear conditions will prevail through Saturday. A few larger avalanches in very steep terrain were observed today that were triggered by recent cornice fall or wind loading. Travel is good in sheltered areas. JBW

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Avalanche Problems

Wind Slabs

Northerly outflow winds have created new windslabs in all open terrain. These fresh slabs are sensitive to human triggering and overlay previous hard slabs. Steep lee features at and above treeline should be approached cautiously.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3

Deep Persistent Slabs

The strong mid pack is mostly bridging the depth hoar at the base of the snowpack. This weak base is found most places except the west side of the divide. Beware of very steep thin areas are where the likelihood of triggering this layer is highest.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3