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.
Below Treeline
Below Threshold.
Regions
Jasper.
Snowpack information for the high alpine is scarce, take a cautious approach and use a thorough assessment process if you venture into this terrain.
Weather Forecast
The current ridge of high pressure will hold until late Wednesday when a westerly flow will move in bringing light precip to the forecast region. Ridge winds will stay in the moderate range and treeline temperatures will fluctuate between -8 and 0. Click here for the Avalanche Canada mountain weather forecast.
Snowpack Summary
Strong winds have scoured ridges to bare rock in many places in the alpine. The Oct 25 crust is 2-4cm thick and down 60 to 80cm with facets above and below it. Hard sudden collapse failures have been observed immediately below this crust in test profiles. Early season hazards lurking beneath the shallow snowpack remain a concern.
Avalanche Summary
Dry loose snow avalanches up to size 2 were observed over the weekend from steep solar terrain in the alpine.
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.