Avalanche Forecast
Avalanche Bulletin - Jasper National Park
A structurally weak snowpack may make travel in uncompacted terrain difficult, especially below treeline.
The persistent mid-pack weakness can still be found at or near treeline, but has not been reactive for some time.
Avalanche Problem 1: Wind Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Best conditions found on sheltered aspects.
Avalanche Problem 2: Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
A cold, facetting, and structurally weak slab up to 80cm thick overlies: faceted crystals (well developed in shallow areas), surface hoar (at, and just above treeline), and sun crusts (on steep S and W aspects).
Travel and Terrain Advice
- Be wary of slopes that did not previously avalanche.
Avalanche Summary
No new avalanche activity observed or reported.
Snowpack Summary
Much of the regional snowpack is losing support and, facetting after two weeks of cold, dry weather. Wind slabs and extensive wind effect is found in all open areas. The upper snowpack is a 50 to 80 cm weakening slab, over the seasonally persistent instability.
Weather Forecast
Over the next 36 hours, local snowfall amounts, and relentless N winds are both expected to remain light. It will stay cold with overnight lows in the Icefields/Maligne regions near -20 but, it feels tolerably warm on solar aspects during the day.
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Expect hard windslabs in the alpine and at treeline. The cold has reduced the probability for long propagations but caution is still warranted on exposed terrain features.