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
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Regions
Jasper.
The timing and intensity of this storm is still uncertain. Be aware of changing conditions through the day and expect the avalanche hazard to increase.
Weather Forecast
A series of cold fronts embedded in a north westerly flow will bring precipitation to the forecast region this week. The first system is expected to arrive Tuesday with 10-15cm of snow. Moderate North West winds will be associated with this front. Click here for a detailed mountain weather forecast from Avalanche Canada
Snowpack Summary
Incoming new snow will overlay a variaty of high pressure surface conditions such as facets, isolated surface hoar ,crusts and windslabs. The Oct 25th crust can be found as much as 30cm off the ground and likely encountered between 1800-2,700m. The snow cover below treeline is thin.
Avalanche Summary
No new avalanches observed today during a road patrol down highway 93. Remember to share the conditions found on your trip this week with Avalanche Canada's, Mountain Information Network
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.
Storm Slabs
Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.