Avalanche Forecast
Avalanche Bulletin - Jasper National Park
Good skiing exists in sheltered areas near treeline. Thursday may have freezing levels rising to 3400m which is unusual for this time of year. Expect the danger to increase with unseasonably warm temperatures.
Avalanche Problem 1: Wind Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Use caution in lee areas. Recent wind loading has created wind slabs.
- If triggered the wind slabs may step down to deeper layers resulting in large avalanches.
Avalanche Summary
No patrol on Tuesday and nothing new reported. No new avalanches noted on Monday.
Snowpack Summary
Wind slabs are in exposed lee features. A significant crust (Black Friday, Nov.23) can be found down 30 to 70cms. A persistent slab overlays this crust and so far the bond appears to be strengthening at this interface. The Halloween crust sits well down in the snowpack at TL locations and as high as 2700m.
Weather Forecast
Wednesday will be mainly sunny, no new snow, high of 1 degree, 10-20km/hr NW winds, and 2100m freezing level. Thursday will be sunny, alpine temperature of 4 degrees, light NW winds, and 3400m freezing level. This spike in freezing level is unusual for this time year. Friday will be sunny, light West winds, and 2200m freezing level.
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Wind slabs are present on lee aspects. Bond strength of these slabs to the snowpack below is uncertain.