Avalanche forecast

Jasper

Dec 6 – 7, 2015Parks Canada
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Archived · expired 11 years ago

Avalanche danger

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

Surface hoar layer not readily found on east treeline aspects on today's field trip.  Forecasters are still nervous about this elusive weakness so continued cautious decision making is advised.

Avalanche problems

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    25 cm of snow so far with a total of 40 cm expected by Tuesday night.  Mod to strong SW winds building slabs on top of a well developed surface hoar layer. Sheltered northerly aspects are likely areas where this surface hoar is most prevalent.

Weather Forecast

Continued snow as a series of storms roll over the area.  Expecting up to 40 cm accumulated by Tuesday night. Mod to strong SW winds with warm valley bottom temps cooling with elevation.

Snowpack Summary

25 cm new (and more on the way) over a well settled snowpack at treeline and below. In the alpine and TL, strong SW winds redistributing the new snow on the lee aspects. The distribution of the surface hoar that formed during last week's inversion is widespread but is most likely best preserved on sheltered north aspect slopes.

Avalanche Summary

No new activity observed.

Confidence

Intensity of incoming weather systems is uncertain on Sunday

Regions covered