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Archived

Avalanche Forecast

Apr 24th, 2012–Apr 25th, 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
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
3: Considerable
The avalanche danger rating below treeline will be considerable
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Kananaskis.

With not much of a freeze overnight isothermal snowpack conditions will persist, especially at lower elevations. Rain up to mountain top is expected on Thursday. Avoid large and committing terrain until good spring-time conditions return.

Confidence

Fair - Timing, track, or intensity of incoming weather is uncertain

Weather Forecast

Temperatures will remain warm overnight and not much of a freeze is expected. SW winds will slowly diminish through the day. A pulse of precipitation is expected Thursday with rain as high as 2900m.

Avalanche Summary

Snowpack Summary

Avalanche Problems

Loose Wet

Crusts are breaking down each day as the temperature warms up. Decreases in stability will first appear on solar aspects then spread to all aspects as temperatures climb. Keep an eye on overhead terrain that is already in the sun.

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

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 4

Cornices

Cornices are sagging in the current heat wave. Cornice failures could be large enough triggers to activate the deep weak layers in the snowpack.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 5

Deep Persistent Slabs

Warm days may re-awaken some of the deeply buried weak layers lingering at the base of the snowpack. There has been no recent activity on this layer but that could change will the continued warm temperatures and rain in the forecast.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 4 - 7