Archived

Avalanche Forecast

Jan 4th, 2012–Jan 5th, 2012

Alpine

4: High

The avalanche danger rating in the alpine will be high

Treeline

3: Considerable

The avalanche danger rating at treeline will be considerable

Below Treeline

3: Considerable

The avalanche danger rating below treeline will be considerable

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

1: Low

The avalanche danger rating below treeline will be low

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

1: Low

The avalanche danger rating below treeline will be low

Regions: Jasper.

Maligne Road and Icefields Parkway closed. Avalanche control operations will take place throughout the day on January 5 along the Parkway. Highway should open Thursday PM.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Wind effect is extremely variable on Wednesday

Avalanche Problems

Storm Slabs

Intense snow and rain below 1500 m.

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

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 2 - 3

Wind Slabs

Windslabs present in all sheltered lee features, evaluate local wind effect.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3

Deep Persistent Slabs

On Sunday, a large cornice failure on Kitchener ridge triggered a size 3 avalanche that ran 800m on moderate angle terrain. Cornices are large and precarious right now from winds and warm temperatures.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 4