Avalanche forecast

Jasper

Nov 22 – 23, 2012Parks Canada
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Archived · expired 14 years ago

Avalanche danger

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

Early season hazards may be hidden directly under the snow surface.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–3
    This layer produced several avalanches to size 2.5 on Tuesday, limited to lee and cross loaded features but a wide range of aspects in the alpine. No new avalanches were observed on Weds.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    1–3
    A variety of old surface layer shears can be found in field tests. No avalanches have been observed on these layers. A  test profile on Parker south showed moderate sudden planar results.

Weather Forecast

5 - 10cm of snow are expected overnight with light winds. Another light snowfall is expected on Friday with increasing SW winds.

Snowpack Summary

Snowpack on a South aspect at treeline is 60cm with facets between two crusts and a moist layer at the ground.  Moderate tests showed a weakness in the facets just above the november 6th crust.

Avalanche Summary

no new avalanches observed in the past 24 hrs.

Confidence

Wind speed and direction is uncertain

Regions covered