Avalanche forecast

Banff Yoho Kootenay

Dec 14 – 15, 2011Parks Canada
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Avalanche danger

Wed
Thu
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

Snowfall accumulations are uncertain for Thursday, but forecasted for ~10cm. Alpine hazard rating will depend on actual amounts received. Winds should remain light to moderate from the W/NW.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–2
    Wind-slabs are starting to form in high elevation lee areas from a light Westerly flow. These slabs will be between 10 and 25cm deep.

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely - Possible
    Size
    2–4
    The weak base of depth hoar and facets is now less sensitive to human triggering. We have now entered a period of "low likelihood - high consequence". Shallow and faceted areas are likely trigger points.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Forecast snowfall amounts are uncertain on Thursday

Regions covered