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Avalanche Forecast

Archived

Dec 18th, 2014–Dec 19th, 2014

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Kananaskis.

Tricky travel out there right now. Breakable crust down low and windslabs up high.  Skiing isn't the most inspiring, but ice climbing,  snowshoeing & X-country skiing are all reasonable.

Confidence

Good

Weather Forecast

Frezzing level's will rise to almost 1600m tomorrow. Winds will be consistent at 20-30km/hr at upper treeline elevations. It looks like we'll go another day yet before we see snow. In fact it looks like the next 3 days atleast will be snow free.

Avalanche Summary

no new avalanches

Snowpack Summary

No major changes in the snowpack. We have 3 significant layers out there, with only 2 of them being problematic. The problematic layers are the Nov 6th crust & the Nov 24 facets. In many areas these layers have combined, however there are a few places where the layers are separate. The Nov 6th and/or the Nov 24 is down 60-80cm's at treeline. Right now all of our strength is coming from the midpack, which has been doing a pretty good job of bridging the lower weak layers.

Problems

Deep Persistent Slabs

Deep Persistent Slab avalanches are the release of a thick cohesive layer of hard snow (a slab), when the bond breaks between the slab and an underlying persistent weak layer deep in the snowpack. The most common persistent weak layers involved in deep, persistent slabs are depth hoar or facets surrounding a deeply buried crust. Deep Persistent Slabs are typically hard to trigger, are very destructive and dangerous due to the large mass of snow involved, and can persist for months once developed. They are often triggered from areas where the snow is shallow and weak, and are particularly difficult to forecast for and manage.