Avalanche forecast

Jasper

Nov 29 – 30, 2012Parks Canada
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Archived · expired 14 years ago

Avalanche danger

Thu
Fri
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–3
    No new natural activity on this layer has been noted for a few days yet potential still exists on steep unsupported wind loaded slopes.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    Persistent slabs are found in the mid-pack overlying crust or developing facets. Snow load from wind deposition or significant snowfall may increase the likelihood of natural avalanches. Consequences would be severe if skier triggered.

Weather Forecast

Snow is expected for the nest several days. Localized areas of heavy accumulations may be seen particularly in the Columbia Icefield area.  Above freezing temperatures may be observed at valley bottom locations.

Snowpack Summary

Winds continue to be light; 10-15cm of low density surface snow in most areas. Windslabs can be found in the alpine buried under last week's snow particularly at ridge tops.  Several isolated whumphs observed in shallow areas. Winds remain calm.

Avalanche Summary

Several loose natural point releases observed on in steep rocky terrain did not trigger slopes below. No new slab avalanches have been observed for 3 days. Caution is still warranted despite decrease in natural activity.

Confidence

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

Regions covered