Avalanche forecast

Northwest Inland

Dec 1 – 2, 2011Avalanche Canada
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Avalanche danger

Sat
Sun
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
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Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely - Very Likely
    Size
    2–4
    Very strong SW winds and forecast NW winds may create hard and soft wind slabs in exposed leeward terrain well into treeline.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–4
    Storm snow instabilities may be susceptible to human triggering, especially in areas that received more snow on Thursday.

Confidence

Poor - Due to limited field observations

Weather Forecast

A ridge of high pressure builds over the province bringing a mix of sun and cloud to inland sections of the Northwest on Friday, Saturday, and Sunday. Winds should ease to light-moderate from the NW and the freezing level should remain at or near valley bottom.

Avalanche Summary

No new observations. Wind slabs and storm snow instabilities will remain susceptible to human triggering for at least the next couple days.

Snowpack Summary

New hard and soft wind slabs are likely well into treeline due to very strong W-SW winds on Thursday. The average snowpack depth at treeline is over 200cm. The mid and lower snowpack are generally quite strong. Watch for clues of instability like whumpfs or shooting cracks, and if observed back off any steeper objectives.

Regions covered