Avalanche forecast

Kootenay Boundary

Dec 18 – 19, 2025Avalanche Canada
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Avalanche danger

Sat
Sun
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate

Highlights

Up to 30 cm of new snow and southwest winds have formed fresh storm slabs that will be most reactive in wind affected terrain.

Make conservative terrain choices and avoid overhead hazard.

Avalanche problems

  • Storm Slabs

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

    Up to 30 cm of new snow and strong southwest winds have formed fresh storm slabs that will be most reactive in wind affected terrain.

Confidence

Moderate

  • Uncertainty is due to the limited number of field observations.

Avalanche Summary

On Tuesday, numerous natural and explosive triggered storm slab avalanches up to size 2 were reported at all aspects and elevations.

Snowpack Summary

20 to 30 cm of new snow and strong southwest winds have formed slabs overlying a thick crust.

Below the crust, the snowpack is likely moist to the ground.

Weather Summary

Wednesday Night
Partly cloudy. 40 km/h southwest ridgetop wind. Treeline temperature -8 °C. Freezing level 900 m.

Thursday
Cloudy. 10 to 20 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -7 °C. Freezing level 900 m.

Friday
Mix of sun and clouds. 30 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 1100 m.

Saturday
Mostly cloudy with isolated flurries. 0-5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -8 °C. Freezing level 700 m.



More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Avoid freshly wind-loaded features, especially near ridge crests, rollovers, and in steep terrain.
  • Use small, low consequence slopes to test the bond of the new snow.
  • Closely monitor how the new snow is bonding to the crust.

Regions covered