Avalanche forecast

Jasper

Apr 26 – 27, 2012Parks Canada
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Archived · expired 14 years ago

Avalanche danger

Sat
Sun
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
3 · Considerable
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Highlights

Cooler overnight temperatures will create a melt freeze crust from the alpine to treeline. The hazard is reduced while this crust is intact. Warm temperatures, sun exposure and precipitation in the form of rain will increase the hazard rapidly.

Avalanche problems

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    The freezing level will drop below treeline Thursday with rain turning to snow overnight. Expect continued unstable isothermal conditions below treeline, possibly extending to treeline as temperatures increase during the day.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3
    Large triggers such as cornice failure could release large slab avalanches on several deep failure planes including ground, especially on steep slopes with a smooth rock slab bed surface.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Freezing levels are uncertain on Friday

Regions covered