Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Below Threshold.
Regions
Jasper.
Early season hazards due to the shallow snowpack (skiers) and thin, newly formed ice (climbers) remain a primary concern.
Weather Forecast
Click here for the Avalanche Canada mountain weather forecast.
Snowpack Summary
The Oct. 25th crust/facet combo remains the main concern. This layer is buried an average of 20 to 50cm, and is present on most slopes with sufficient snowpack for safe skiing - we expect this layer to linger for sometime. The snowpack below treeline is mostly below threshold depths for avalanche activity.
Avalanche Summary
Last week the Oct 25th layer produced some large natural avalanches (up to size 2.5) throughout the Rockies from as far south as Kananaskis Country, north to Yoho, the Icefields, Jasper and Marmot Basin Ski Hill.
Confidence
Intensity of incoming weather systems is uncertain on Tuesday
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.