Avalanche forecast

Kootenay Boundary

Mar 16 – 17, 2026Avalanche Canada
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Avalanche danger

Wed
Thu
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate

Highlights

Temperatures are on the rise!

Watch for signs of slab formation throughout the day.

Avalanche problems

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    2–3

    At upper elevations, where the crust is thinner or not present, it may still be possible to trigger persistent slabs on multiple buried weak layers of surface hoar and/or crusts in the top 120 cm of the snowpack.

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible - Likely
    Size
    1–2

    New snow has incrementally accumulated with up to 30 cm sitting over previously wind affected surfaces. As temperatures rise storm slabs will consolidate and may become more reactive throughout the day.

Confidence

Moderate

  • We are uncertain about how the timing or intensity of warming will affect the snowpack.

Avalanche Summary

On Sunday, small wind slab and dry loose releases were reported.

On Saturday, numerous wind slab avalanche were reported. These avalanches were between size 1 to 2 and were naturally and rider triggered.

Snowpack Summary

10 to 15 cm of new snow has accumulated over the past 24 hours over a generally wind affected surface with a crust found on south facing terrain.

A crust buried early in March is down roughly 50 cm on all aspects. The thickness of the crust depends on elevation.

At upper elevations, where the crust is thinner or not present, it may still be possible to trigger persistent slabs on multiple buried weak layers of surface hoar and/or crusts in the top 120 cm of the snowpack.

The mid/lower snowpack is well settled and strong in most areas.

Weather Summary

Monday Night
Cloudy. 3 cm of snow. 50 km/h west ridgetop wind. Treeline temperature -3 °C.

Tuesday
Cloudy. 3 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.

Wednesday
Cloudy. 35 mm of rain at treeline. 40 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2300 m.

Thursday
Mostly cloudy. 15 mm of rain at treeline. 40 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks, or recent avalanches.
  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • As the storm slab problem worsens, the easy solution is to choose more conservative terrain.

Regions covered