Avalanche forecast

Jasper

Dec 11 – 12, 2011Parks Canada
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Archived · expired 15 years ago

Avalanche danger

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

The alpine and exposed tree line has been hammered by SW winds. Expect slab conditions on any wind exposed slope. Sheltered glades will offer the best skiing.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–3
    There is a veneer of wind slab on lee slopes ranging from soft slab on more sheltered slopes to hard slab on exposed slopes. Human triggering is possible which may then step down to the basal facet layer resulting in a large full path avalanche.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    2–3
    The weak basal facet layer is bridged by a supportive mid-pack below treeline and by hard slab on wind exposed features at treeline and above. This weakness is most likely triggered from thin areas in or on the edge of large open slopes.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Regions covered