Bulletin d’avalanche

Kootenay Boundary

Dec 22 – 23, 2025Avalanche Canada
Voir sur la carte
Archivé · expiré 9 months ago

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Watch for changing conditions as you shift elevation and aspect - wind affected features may remain reactive to human triggers.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2

    Wind affected features may remain reactive to human triggers, especially where they sit over a smooth crust.

Confidence

Moderate

  • The snowpack structure is generally well understood.
  • Uncertainty is due to the speed, direction, or duration of the wind and its effect on the snowpack.

Avalanche Summary

On Saturday, wind affected features were reactive to rider triggers to size 1 and sluffing was observed in steep, sheltered features. We expect this to continue with light amounts of new snow.

Snowpack Summary

40–60 cm of recent snowfall combined with strong southwest winds has formed slabs over a 2–5 cm thick crust.

The mid and lower snowpack is generally well-settled and contains multiple crust layers.

Weather Summary

Sunday Night
Mostly cloudy. 4 to 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -7 °C. Freezing level 900 m.

Monday
Mostly cloudy. 1 to 2 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -7 °C. Freezing level 1000 m.

Tuesday
Mostly cloudy. 5 to 10 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -6 °C. Freezing level 600 m.

Wednesday
Mostly cloudy. 10 to 25 cm of snow. 30 km/h south ridgetop wind. Treeline temperature -5 °C. Freezing level 300 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Closely monitor how the new snow is bonding to the crust.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Approach lee and cross-loaded slopes with caution.

Régions couvertes