Avalanche Forecast

Archived

Jan 13th, 2020–Jan 14th, 2020

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.

Below Treeline

Natural avalanches unlikely.

Regions

Jasper.

Dangerously Cold!

The CAA's Mountain Weather forecast now includes a more specific Alberta Rockies synopsis. It's a great day to geek out on weather data!

Weather Forecast

The jet stream has dipped to the south allowing arctic air to blanket the forecast area. On Wednesday a low passing to the south provides minimal precipitation to our region. By Friday the westerly flow starts to reemerge, finally displacing the cold air.

Snowpack Summary

Surface faceting at all elevations. Weakening midpack comprised of mixed forms and facets, bridging basal facets and DH. HS Average at TL: ~150cm.

Avalanche Summary

No new avalanches observed or reported

Confidence

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.