Avalanche forecast

Banff Yoho Kootenay

Mar 10, 2025Avalanche Canada
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Avalanche danger

Tue
Wed
Alpine
4 · High
Treeline
4 · High
Below
3 · Considerable
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Highlights

Heavy snowfall has resulted in 15-75 + cm of new snow, with more in the northern areas (Bow Summit). The avalanche danger is expected to remain HIGH over the next few days.

Parks Canada will be conducting avalanche control on Mt Bosworth and Mt Stephen on Monday, March 10. No access to these zones on March 10.

Avalanche problems

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    2–3

    Storm snow is forecast to overload the persistent layers in the midpack and basal layers.

  • Loose Dry

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    1–2

    Lots of snow available for transport and strong winds will create loose dry avalanches at treeline and above.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    1.5–3

    20-80 cm HST since Saturday and strong southerly winds creating storm and wind slabs at all elevations. Greater amounts in the northern forecast area (Bow Summit).

Confidence

High

Avalanche Summary

Ongoing natural cycle up to size 3 is expected through Tuesday. Stay out of all avalanche terrain.

Weather Summary

An atmospheric river will continue to bring heavy snowfall to the region Sunday night. This system has primarily affected the northern parts of the region. Snow amounts so far ranges from over 50 cm at Bow Summit to 10 cm in the Simpson area. An additional 20 to 30 cm of snow is possible Sunday night before conditions begin to clear. Winds will start to decrease Monday, and freezing levels will drop to valley bottoms.

Terrain and Travel Advice

  • Avoid avalanche terrain during periods of heavy snowfall.

Regions covered