Avalanche forecast

Jasper

Nov 20 – 21, 2017Parks Canada
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Archived · expired 9 years ago

Avalanche danger

Tue
Wed
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
1 · Low

Highlights

Careful evaluation of the snowpack and new surface instabilities is needed meow! Reports of skier triggered avalanches in the surrounding neighborhood is a reminder to all users to be cautious and conservative when riding in these active conditions.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–3
    New snow overloading an active wind slab, potentially 30-50cm deep. Predominately on exposed alpine and treeline features. Natural and human triggering likely!

Weather Forecast

Out with one storm and in with another. A short reprieve from snow and broken skies for Monday before a second storm comes in by Tuesday afternoon. Expect 10 - 20cm by Monday morning in the icefields area with gusty SW winds at ridge top.

Snowpack Summary

As of 15:00, 10 cm new snow (and still falling) with Moderate to Strong SW winds. You can assume that this system is actively creating new and overloading existing windslabs. While generally a strong, and supportive snowpack this surface instability will linger and deserves your respect.

Avalanche Summary

No new natural activity reported from a field teams on Sunday. Poor visibility made any alpine or treeline observations impossible. Expect increased likelihood of avalanches with the outgoing and incoming storm on Tuesday/Wednesday.

Confidence

Intensity of incoming weather systems is uncertain on Tuesday

Regions covered