Avalanche forecast

Jasper

Nov 25 – 26, 2019Parks Canada
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Archived · expired 7 years ago

Avalanche danger

Tue
Wed
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
1 · Low
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Highlights

30cm of new snow in the Icefields with SW wind.

The bond seems to be good between new and old snow surfaces; patience and time is be needed to be sure.

Travel near open water and sheltered terrain traps are most vulnerable to a reactive instability.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–2

    Ongoing strong SW winds redistributed 30cm new snow to lee features in open spaces.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–2.5

    New snow sitting over a variety of surfaces. Though proving less reactive to natural loads this interface has yet been tested much underfoot. Tread cautiously, coming cool temps should tighten the bond over the old snow. 

Weather Forecast

Progressive cooling overnight and continues through the week. For more details: Avalanche Canada's, Mountain Weather Forecast.

Snowpack Summary

30cm of storm snow (HST) overnight Saturday at TL in the Icefields. This HST is sitting on a variety of surfaces depending on elevation and aspect. Surface hoar may be preserved in sheltered locations. The snow seems to be bonding well to previous surfaces at all elevations.

Avalanche Summary

Road patrols in the Maligne Valley and Icefields reported generally poor visibility but no natural avalanches observed at any elevation. Field team in Icefields reported a profile at TL (2240m). HS: 125cm. Found a moderate, resistant planar compression result down 40cm, likely on buried windslab.

Confidence

Regions covered