Avalanche forecast

Jasper

Mar 11 – 12, 2012Parks Canada
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Archived · expired 15 years ago

Avalanche danger

Mon
Tue
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
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Highlights

Sunny periods may occur between weather systems. IF the sun comes out for an extended time, the avalanche danger will increase on southerly aspects in the alpine and treeline. The sun will also contribute to isothermal conditions in valley bottoms.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Snowflurries have deposited over 30cm in the last 2 days in the icefields area. SW winds are creating new wind slabs primarily in the alpine and exposed treeline locations.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–4
    Recent natural avalanche activity has declined but this snowpack weakness remains very touchy and easily collapses with skier presence. Expect to see more activity when the windslabs and storm slabs begin to stiffen above this layer.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    As these slabs settle and stiffen, they will produce small slides that will step down to the persistent buried surface hoar layer.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing, track, or intensity of incoming weather system is uncertain

Regions covered