Avalanche forecast

Jasper

Dec 27 – 28, 2011Parks Canada
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Archived · expired 15 years ago

Avalanche danger

Tue
Wed
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
2 · Moderate
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Highlights

A cornucopia of windslabs exist across the landscape with steady moderate winds. Many slopes are stripped bare or wind pressed. Cool temperatures aiding stability after 20cm warm storm but human triggered avalanches remain possible.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    Moderate winds continue to hammer the Icefields. 20cm last night blew away or melded into existing windslab. surface conditions range from boilerplate, sustrugi, and loaded lee slopes. Avoid slabby feeling slopes.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    Basal facet collapses are still possible and will remain a concern as consequences would be big if triggered. Shallow snowpack areas and rocky outcrops are trigger locations.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Wind effect is extremely variable

Regions covered