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Archived

Avalanche Forecast

Nov 29th, 2012–Nov 30th, 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
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.

Weather Forecast

A warm and a cold air mass are converging over Jasper. Up to 10 cm of snow is expected but local accumulations may be twice that. Temperatures will range from -15 to the freezing mark , so be prepared for a variety of weather this weekend.

Snowpack Summary

A couple cms of new snow fell today with minimal wind effect. Wind slabs created after last week's storm continue to be our biggest concern in the snowpack, particularly at ridge tops and cross loaded features. 

Avalanche Summary

No new avalanches were observed in the past 48 hours.

Confidence

Intensity of incoming weather systems is uncertain

Avalanche Problems

Wind Slabs

No new natural activity on this layer has been noted for a few days yet potential still exists on steep unsupported wind loaded slopes.
Avoid lee and cross-loaded terrain near ridge crests.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3

Persistent Slabs

A persistent facetted weakness can be found around a mid-pack crust. There is low likelihood of natural avalanches occurring on this layer but we are watching as each small system deposits more snow load.
Avoid unsupported slopes.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3