Avalanche Forecast
Avalanche Bulletin - Jasper National Park
Highway 93 from Sask Crossing to Jasper remains closed until Thursday due to Avalanche danger and control work ongoing.
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- If triggered the storm slabs may step down to deeper layers resulting in large avalanches.
- Minimize overhead exposure during periods of heavy loading from new snow, wind.
Avalanche Problem 2: Loose Dry
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
widespread from rapid loading of new snow with warm temps and quick settlement.
Travel and Terrain Advice
- Avoid terrain traps, such as gullies, where the consequences of a small avalanche could be serious.
Avalanche Summary
Avalanche control on Parkers Ridge today produced several size 2 avalanches, and one size 2.5 Avalanches are occasionally stepping down to a deeper persistent slab. Numerous natural size 2 avalanches and two size 3 avalanches failed during the storm overnight on solar aspects above treeline. Avalanche crowns were 50cm-80cm deep and to 150m wide.
Snowpack Summary
30-50cm of new storm snow arriving with warm temps and moderate winds have created both wind and storm slabs that have naturally avalanched on steeper terrain in the Icefields area of the forecast zone. Failure layers are assumed to be one or a combination of the 3 weak interfaces in the top half of the snowpack.
Weather Forecast
Snowfall tapering off and broken skies and seasonal cool temperatures through tomorrow will persist into Thursday. Friday will see a return of snowfall that will carry through the weekend as a cooler arctic high stalls moister Pacific air over the forecast zone.
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Natural Avalanches to size 3 were noted today along with numerous size 2 avalanches failing down 50-100cm on persistent weak layers.