Avalanche Forecast
Avalanche Bulletin - Jasper National Park
Warm and Sunny
An early start, caution, and avoidance during the heat of the day is essential for safe travel in avalanche terrain right now.
Avalanche Problem 1: Loose Wet
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Avoid ice climbs exposed to steep rocky terrain on solar aspects during the middle of the day.
- Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
Avalanche Problem 2: Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
A cold, facetting, and structurally weak snowpack overlies faceted crystals (well developed in shallow areas).
Travel and Terrain Advice
- Be wary of slopes that did not previously avalanche.
- Minimize exposure to steep, sun exposed slopes when the solar radiation is strong.
Avalanche Summary
Snowpack Summary
Melt freeze, spring-like cycle beginning in ernest TL and below. Moist surface snow on steep, solar aspects. Less so in the Alpine where freezing levels (up to 2100m) and cooling winds are keeping the surface dry. Facetting has weakened the upr. snowpack in isolated, shaded areas through the forecast region. Wind effect in open areas in ALP and TL.
Weather Forecast
Glorious diurnal swings in temperatures making it positively spring like in the mountains this weekend. For Sunday, freezing levels cresting to 2100m with sun and little wind. More of the same leading into the week with strong solar effect and continued, rising freezing levels up to 3000m by mid week.
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Late afternoon problem in steep, solar rocky terrain. Also found to be entraining the surrounding, facetted snowpack and will build up volume and speed quickly.