Avalanche forecast

Jasper

Mar 5 – 6, 2012Parks Canada
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Archived · expired 15 years ago

Avalanche danger

Mon
Tue
Alpine
4 · High
Treeline
4 · High
Below
3 · Considerable
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Highlights

Up to 40 cm of snow is possible from Sunday night to Monday afternoon. We are expecting a significant avalanche cycle on Monday.

Avalanche problems

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–4
    Open slopes on Northeast to South aspects have slabs that are sitting on surface hoar 20-60cm down. On southerly aspects, the surface hoar formed on a sun crust, increasing the possibility of remote triggering and wide propagations.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely - Very Likely
    Size
    1–3
    Heavy snow expected on Monday. Moderate to strong SW winds will be building wind slabs that will be sitting on top of a weak buried surface hoar layer in some locations. Past variable winds make locating this surface hoar layer challenging.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

on Monday

Regions covered