Avalanche forecast

Banff Yoho Kootenay

Mar 29 – 30, 2012Parks Canada
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Archived · expired 15 years ago

Avalanche danger

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

There may be 20cm of new snow when you wake up tomorrow. Likely this will be blown into wind slabs in the alpine and tree-line. Be cautious along ridge lines, and remember that you could remote trigger an avalanche from thin, weak spots in the slope.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2
    We may see up to 20cm of snow tonight and early tomorrow morning, accompanied by moderate to strong west winds. This will create a wind slab that will take some time to bond to the existing snowpack. Caution on lee features and cross-loaded gullies.

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    Test pits today at tree-line and alpine elevations, east of the divide, found the surface hoar down 60-75cm, and failing sudden planar in the moderate to hard range. Given the widespread nature of this layer, supported slopes are still my choice.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain

Regions covered