Avalanche forecast

Jasper

Dec 7 – 8, 2012Parks Canada
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Archived · expired 14 years ago

Avalanche danger

Fri
Sat
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Good skiing can be located in sheltered treeline locations.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–3
    Variable and localized winds will continue to transport storm snow onto lee aspects particularly at ridgetops. Triggering a windslab is possible in immediate lee alpine features.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    A persistent facetted weakness can be found around a mid-pack crust. Saturday, an isolated size 3 slab avalanche on a steep Northerly slope in the Hilda Creek area likely ran on this layer. No other avalanches have been observed recently.

Weather Forecast

8mm of precipitation in the form of light flurries will move through now until Sunday. A weak ridge of high pressure may set up beginning on Saturday bringing the first cold temperatures of the season in the -20 range. Winds will continue to gust moderate Southwest at alpine ridgetops.

Snowpack Summary

Light to moderate variable winds at ridgetop are redistributing recent storm snow onto a variety of lee aspects. Watch for pockets of specific terrain features that may have developed into a slab condition. 

Avalanche Summary

No New significant natural avalanches were observed today. Explosive work along parkers slabs with 14 avalauncher shots only produced one size 2 slab avalanche from a windloaded location on rock slab. 

Confidence

Due to the number and quality of field observations on Thursday

Regions covered