Avalanche forecast

Jasper

Mar 30 – 31, 2012Parks Canada
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Archived · expired 15 years ago

Avalanche danger

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

One size 3 avalanche was noted today off an alpine ridgetop likely cornice triggered. Another 15cm is expected Friday night with a possible E flow Saturday evening delivering additional accumulations at Maligne and Icefields.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    2–3
    Thursday night Maligne received 30cm and Icefields 5-20cm. Another 10-15cm may arrive Friday into Saturday. Winds continue to build slabs and add load potentially to a slippery crust from earlier sun effect particularly on steep solar aspects.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–4
    The buried surface hoar layer 70-120cm down remains a concern in areas that have not avalanched. The layer is still being observed at treeline and below treeline locations yet 'generally' layers are bridging it above. Cautious of shallow locations.

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–3
    Recent cloud cover has reduced daytime heating. Still be cautious if the sun pokes out as avalanche activity will increase quickly particularly on steep S or W aspect rock bluffs or gullies.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Saturday

Regions covered