Avalanche forecast

Jasper

Nov 28 – 29, 2014Parks Canada
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Archived · expired 12 years ago

Avalanche danger

Fri
Sat
Alpine
4 · High
Treeline
4 · High
Below
2 · Moderate
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Highlights

In the midst of big storm. Critical loads have been reached.

Avalanche problems

  • Loose Dry

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    1–2
      Large sloughs can be expected in all steep terrain and gully features.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely - Very Likely
    Size
    1–3
    Soft slabs in wind loaded areas up to 40 cm in the alpine overlying a variety of weak layers. Critical loading has been reached and natural avalanche cycle in on the way.

Weather Forecast

Storm is continuing to bring up to 30cm more snow and moderate winds till at least Friday morning. Winds will switch from S to NE . A cold front will bring clear skies and cold temperatures lasting throughout the weekend.

Snowpack Summary

40 to 70cm of snow has fallen in the alpine and this will have drifted with the winds. This storm snow overlies a weak snowpack  consisting of rain crusts and facets. Suspected wind affect and soft slabs  at tree line and above.

Avalanche Summary

Loose avalanches to size 2 at all elevations. Soft slab avalanches suspected at and above tree line to 2.5

Confidence

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

Regions covered