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Archived

Avalanche Forecast

Feb 7th, 2015–Feb 8th, 2015
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
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
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

Very touchy conditions will continue until the storm snow has a chance to settle.  Your best bet is to ski at the hill until the avalanche hazard drops.

Weather Forecast

The storm has past but flurries can be expected through sunday with further accumulations of 5 to 10 cms.  Mild temps will continue.  Light to moderate SW winds.

Snowpack Summary

Huge variation in the snowpack across the forecast region!! The Icefields Area received a whopping 40 to 60 cm overnight while areas to the north received much less.  Sensitive storm slab can be found on all aspects at treeline and above.  Rain and freezing rain fell below treeline in most areas. 

Avalanche Summary

A natural avalanche cycle with slides up to 3.5.  Avalanche control efforts along the Icefields Parkway produced large avalanches one bring down mature timber and burying the road.  Several avalanches initiated with just the weight of the bomb on the slope.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Sunday

Avalanche Problems

Storm Slabs

Thick storm slabs can be found on all aspects at treeline and above.
Avoid all avalanche terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 4

Deep Persistent Slabs

This layer remains a concern in isolated areas above treeline and may be triggered by large loads.
Avoid all avalanche terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 4