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Archived

Avalanche Forecast

Apr 17th, 2012–Apr 18th, 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
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.

Not quite as sunny today as originally expected, but solar triggering is the biggest concern with the spring conditions. Sunny periods will be intense and can cause a rapid rise in avalanche danger on solar aspects. Start early and finish early.

Confidence

Good

Weather Forecast

Convective flurries again on Wednesday with sunny periods. Temperatures will be slightly cool in the alpine reaching near -9 degrees. Winds will be light to moderate switching form SW to W to NW.

Avalanche Summary

Snowpack Summary

Avalanche Problems

Loose Wet

Crusts will break down and loose wet slides will occur on solar aspects each day as daytime heating and solar radiation increase. Over the last couple of days avalanches began to occur between 10:00 and 11:00am. Plan your travel accordingly.

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

Elevations: All elevations.

Likelihood: Likely

Expected Size: 1 - 4

Wind Slabs

Recent winds have formed pockets of wind slab 20 to 50cm thick along ridgelines and in cross loaded features at higher elevations. A recent skier remote triggered avalanche in the Lake Louise area occurred on this layer.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 4

Deep Persistent Slabs

Weak crystals still linger at the base of the snowpack that could wake up from large triggers such as cornices or a smaller avalanches stepping down. Any avalanche occurring this deep in the snowpack would have devastating consequences for a skier.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 4 - 7