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Avalanche Forecast

Archived

Feb 10th, 2014–Feb 11th, 2014

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

Regions

Jasper.

The weather if shifting bringing clouds, warmer temperatures, and flurries. Some much needed snow will freshen up the landscape.   

Weather Forecast

Unsettled weather, flurries, and seasonal temperatures Tuesday-Friday. Freezing level will be 1000m on Wednesday with a small input of snow and winds. 10cm of snow may accumulate from Monday evening into Thursday morning. Not enough to increase the hazard. 

Snowpack Summary

Warmer temperatures are slowing down the surface facetting and surface hoar process. A Hard mid-pack is providing bridging strength over the weak basal facet layer at tree line and above. Below treeline where the snowpack exceeds 70cm, it has a supportive mid-pack.

Avalanche Summary

No new avalanches reported.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Wednesday

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.