Archived

Avalanche Forecast

Dec 31st, 2011–Jan 1st, 2012

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

2: Moderate

The avalanche danger rating below treeline will be moderate

Regions: Banff Yoho Kootenay.

Avalanche Control planned for Mt. Bosworth, Stephen, and Field in Yoho and Mt. Wardle and Verendrye in Kootenay tomorrow. Please no outdoor activities in these areas tomorrow.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable

Avalanche Problems

Wind Slabs

Natural avalanches are occurring with on going wind loading and there have been several size 2-3 avalanches on windloaded features, 30-50 degrees in steepness, up Highway 93N. As winds taper & temps drop tonight so will the naturals.

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Deep Persistent Slabs

Today large windslab releases continued to step down into the basal weak facets creating large slides. Even though we are out of high hazard, resist the blue sky/fresh powder/new year's lure into steeper terrain, skier triggering remains likely.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 2 - 3

Storm Slabs

The December 10 surface hoar (5-7 mm) is down approximately 70-115 cm. The distribution of this layer is spotty throughout our region (Whymper, Takakkaw Falls, Sunshine). Skier remote size 2 on this layer near Sunshine today just above treeline.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3