Avalanche forecast

Jasper

Nov 19 – 20, 2011Parks Canada
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Archived · expired 15 years ago

Avalanche danger

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

A significant wind event is forecast to begin on Sunday as the cold air is replaced by a warmer wetter system. The avalanche hazard may rise.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–3
    An specific avalanche cycle occurred today from wind loading on steep (40-50 deg), SE slopes below ridge lines and on cross loaded features between 2600 and 2900 m. Avalanches up to size 3 were observed in this terrain along the Icefield Parkway.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3
    Slabs created by previous Moderate W to NW winds overlay weak basal facets. A large load (surface avalanche, numerous skiers on the slope) could possibly trigger this layer.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

The weather pattern is stable on Saturday

Regions covered