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Archived

Avalanche Forecast

Feb 9th, 2015–Feb 10th, 2015
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
3: Considerable
The avalanche danger rating below treeline will be considerable

Regions: Jasper.

The storm snow is starting to settle but bonding with the rain crust it its sitting on is uncertain.  Stick to low angle terrain until this can be tested.

Weather Forecast

Light flurries with light winds and seasonal temperatures for Tuesday and Wednesday.  Warm temperatures expected on Thursday extending into the weekend.

Snowpack Summary

Huge variation in the snowpack across the forecast region!! The Icefields Area received around 1 meter of snow since Friday while areas to the north received much less. Sensitive storm slab sitting of Jan 29 rain crust on all aspects at treeline and above. Trace to 5 cm new snow sitting on rain crust below treeline in most areas.

Avalanche Summary

Minor sluffing of loose dry snow out of steep terrain.  No new observations. 

Confidence

Freezing levels are uncertain on Thursday

Avalanche Problems

Storm Slabs

Thick storm slabs can be found on all aspects at treeline and above.
If triggered the storm slabs may step down to deeper layers resulting in large avalanches.Use caution in lee areas in the alpine and treeline. Recent storm snow has formed touchy slabs.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - 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 steep slopes below cornices.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 4