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Avalanche Forecast

Archived

Feb 3rd, 2014–Feb 4th, 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

Kananaskis.

Large and steep alpine features still demand respect due to the persistent basal weakness. Otherwise travel conditions are fast and easy. Cold temperatures will persist, so be prepared for the consequences of even a minor emergency.

Confidence

Good

Weather Forecast

The cold temperatures will persist as highs of only -27C are expected in the alpine on Tuesday. Winds will be light from the north with a few clouds in the sky. No precipitation is expected for at least the next 5 days.

Avalanche Summary

Nothing new.

Snowpack Summary

Trace to 2cm of new snow in past 24hrs. Sun crusts are found on all solar aspects at all elevations, and have been remaining frozen all day due to cold temperatures. Alpine and treeline areas exhibit an array of wind slabs, some of which are extremely dense. Basal weaknesses remain.

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.