Avalanche forecast

Jasper

Nov 27 – 29, 2011Parks Canada
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Archived · expired 15 years ago

Avalanche danger

Sun
Mon
Alpine
4 · High
Treeline
4 · High
Below
3 · Considerable

Highlights

Dangerous early season avalanche conditions exist and may become worse by Sunday due to a forecasted storm - travel in avalanche terrain is not recommended.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely - Very Likely
    Size
    1–3
    Gusty and variable winds have formed wind slabs on all aspects at upper elevations, especially in exposed areas. Field teams observed widespread whumphing and shooting cracks while traveling in simple terrain today - two good signs of instability.
  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely - Very Likely
    Size
    2–4
    20-35cm of new snow is expected to fall in the Columbia Icefields Area by early Sunday morning, accompanied by strong winds. This will produce widespread storm slabs that will be easily triggered by light loads.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Intensity of incoming weather systems is uncertain on Sunday

Regions covered