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Avalanche Forecast

Archived

Dec 7th, 2014–Dec 8th, 2014

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

Regions

Kananaskis.

Warm temps are promoting settlement within the snowpack but there is still the potential for human triggerring in some areas like ridgelines and wind affected terrain. 

Confidence

Good - Due to the quality of field observations on Sunday

Weather Forecast

A few more cms of snow will fall over the next few days but not to much.  Temps will remain warm and settlement will likely continue.

Avalanche Summary

No new natural avalanche activity was observed.

Snowpack Summary

Not much is changing out there right now.  Warm temps are promoting settlement within the snowpack and overall strengthening long term.  The 1106Cr is down 80cm and the 1124FC interface is down 60cm.  Both are producing moderate sheers that are becomming more resistant planar in nature.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.

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.