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Archived

Avalanche Forecast

Dec 19th, 2015–Dec 20th, 2015
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
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

Regions: Kananaskis.

New snow and relatively light winds have freshened up the ski quality in many areas. 

Confidence

High

Weather Forecast

Dribs and drabs of snow are expected over the next few days with seasonal temps and continued moderate SW winds at the higher elevations. No major frontal systems are expected to cross the region until Tuesday.

Avalanche Summary

No new avalanches were observed today.

Snowpack Summary

8-12cm of new snow over the past 24hrs with generally very little wind.  We currently have two main concerns within the snowpack.  New windslabs that are building in Alpine areas as well as isolated areas at treeline and the Dec 3rd surface hoar/facet interface down 40-60cm.  The new windslabs are being found along ridgelines, and in gullied terrain in the alpine.  As of todays observations these slabs are only 10-15cm deep and in immediate lees but they were reactive to a skiers weight.  As they grow under the influence of new winds and more snow we can expect the problem to become more widespread so pay attention as you travel.  The other concern, the Dec 3rd layer hasn't produced any avalanches in some time but as we get more and more snow, this load may become reactive later in the season. 

Avalanche Problems

Wind Slabs

Fresh windslabs are building in immediate lees along ridgelines and in crossloaded features in Alpine terrain.  These slabs are more isolated in treeline features.
Avoid freshly wind loaded features.>Avoid lee and cross-loaded terrain near ridge crests.>

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3