Avalanche forecast

Banff Yoho Kootenay

Feb 17 – 18, 2012Parks Canada
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Archived · expired 15 years ago

Avalanche danger

Fri
Sat
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Two systems will give us small amounts of snow tonight and Saturday, slowly adding load to the Valentine's surface hoar. This layer is touchy, and one should use caution in areas of fresh wind slabs, particularly in the alpine.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    The 10-15cm of storm snow we received 3 days ago has formed small slabs in the immediate lee areas of ridges. These slabs are touchy as they lay on top of the Valentine's surface hoar. A skier-triggered sz 1.5 occurred near Quartz Ridge yesterday.

  • Cornices

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–3
    Large cornices on lee (mostly easterly) aspects still loom high overhead. Several large cornice collapses have been observed over the past week. These cornices could be big enough to trigger a deep slab.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain

Regions covered