Avalanche Forecast
Avalanche Bulletin - Jasper National Park
Good skiing can be found on north aspects. Solar triggering is possible on all steep south aspects in the Alpine. Ice climbers take heed.
Avalanche Problem 1: Loose Dry
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Avalanche Problem 2: Deep Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Solar triggering is possible on steep south facing slopes creating large full path avalanches.
Travel and Terrain Advice
- Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
Avalanche Summary
There were numerous dry loose avalanches (size 1-2), along the Icefields Parkway and Maligne Lake Road on steep solar aspects, running to treeline today. A large size 3 slab avalanche was observed in the Icefields this afternoon on a steep South facing slope that ran on the Halloween Crust to treeline.
Snowpack Summary
There is a well settled snowpack in most locations. A 30 - 70 cm persistent slab overlies a significant crust (Nov.23). Bonding appears to be strengthening at this interface. The Halloween crust sits near the bottom of the snowpack from treeline to 2700 m.
Weather Forecast
Continued warm temperatures at treeline and above with sunny skies and light NW winds as the inversion continues through Friday. A gradually cooling trend into the weekend is forecast as the warm air mixes and descends to the valley bottom.
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Solar triggering of loose dry avalanches is occurring in steep terrain. The entraining snow may have the volume to knock ice climbers off their stances.