Avalanche Forecast
Avalanche Bulletin - Jasper National Park
Avalanche control today was effective and Highway 93 should reopen on schedule tomorrow.
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
- Avoid steep, open glades in the forest.
Avalanche Problem 2: Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Persistent slabs remain a problem, areas that have already cleaned out in the last avalanche cycle pose the least risk.
Travel and Terrain Advice
- Watch for whumpfing, hollow sounds, and shooting cracks.
- Avoid exposure to overhead avalanche terrain, large avalanches may reach the end of run out zones.
Avalanche Summary
Widespread avalanche cycle throughout the forecasted region with numerous to size 3.5 over the last 2 days from all aspects. All elevations saw significant propagation with debris often reaching valley bottom even from ALP start zones.
Snowpack Summary
Cool temps have started to reduce the touchiness of the storm slab throughout the forecast zone. Varied storm snow amts: 10-15cm in the Icefields, 40cm near Mt Wilson, and 30cm north of Beauty creek is sitting on the weak and facetted persistent slab at mid snowpack. Reverse loading from a northerly flow has cross-loaded Alpine features.
Weather Forecast
Cool arctic air and beautiful blue skies will dominate over the short term and likely into next week. The strength and location of the high pressure system will keep winds lighter, making for a longer period of good travel conditions and the midday sun will make you feel warm if you recreate in the sunny locations.
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Up to 45cm of HST fell through the forecast area, over-loading the already weak persistent slab and running far and fast.