Avalanche forecast

Jasper

Nov 22 – 23, 2011Parks Canada
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Archived · expired 15 years ago

Avalanche danger

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

The avalanche danger has increased to HIGH with up to 35 cm of snow expected in the next 24 hours.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–3
    SW winds continued to build slab thickness. Natural activity is expected especially on steeper terrain.These slab may have developed further down slope from ridgelines.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–3
    Warm temperatures and heavy snow may increase the possibility of natural avalanches on the weak basal facets below these slabs.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    2–4
    A warm wet weather system will arrive Monday night with strong south to southwest winds and up to 35 cm of snow forecast in the Icefield Area (lesser amounts are expected further north in the forecast area)

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

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

Regions covered