Avalanche forecast

Jasper

Dec 12 – 13, 2014Parks Canada
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Archived · expired 12 years ago

Avalanche danger

Fri
Sat
Alpine
4 · High
Treeline
4 · High
Below
4 · High
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Highlights

The Pineapple Express continues to bring in mild weather and precipitation that is falling as snow at higher elevations.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely - Very Likely
    Size
    2–3
    Recent wind loading has produced new touchy wind slabs on lee and cross loaded features.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely - Very Likely
    Size
    2–3
    Persistent slabs at treeline and sheltered sub-alpine slopes are starting to get overloaded by recent snow and wind loading. Two size 2 skier remote slab avalanches were triggered in the Nigel Basin today.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–2
    Mild temperatures and rain have increased the likelihood of loose wet slides at lower elevations.

Weather Forecast

A forecast of snow at treeline and in the alpine with rainfall at lower elevations.

Snowpack Summary

Very touchy conditions exist at treeline and sub alpine elevations. The recent snow fall is making the facet crust layers near the base of the snowpack very susceptible to human triggering. Our field team in the Parker Ridge area today experienced extensive whumphing and cracking in the snowpack. 

Avalanche Summary

Two size 2 skier remote slab avalanches reported in the Nigel Basin today on Easterly aspects at treeline.

Confidence

Intensity of incoming weather systems is uncertain on Friday

Regions covered