Bulletin d’avalanche

Kootenay Boundary

Apr 15 – 16, 2025Avalanche Canada
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Archivé · expiré last year

Danger d’avalanche

Thu
Fri
Alpin
1 · Faible
Limite forestière
1 · Faible
Sous la limite
1 · Faible

Points saillants

Give cornices a wide margin when travelling beneath them and when on ridgelines.

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3

    Cornices along ridgelines are large and looming. They weaken with progressive warming and could fail at any time.

Confidence

High

Avalanche Summary

A few wet loose avalanches (size 1 to 2) occurred during the warm, sunny weather on Sunday and Monday. With cooler temperatures now in place, cornices are the main concern for the next few days.

Snowpack Summary

Northerly alpine slopes may still hold 10 to 15 cm of soft, dry snow. Elsewhere, a thick, hard crust covers the surface and may soften with daytime warming.

Weak layers deeper in the snowpack are considered dormant, with no recent avalanche activity.

The snowpack is melting rapidly at lower elevations.

Weather Summary

Tuesday Night

Partly cloudy with 0 to 2 cm of snow. 20 km/h northwest ridgetop wind. Treeline temperature +2 °C. Freezing level 2000 m.

Wednesday

Mostly cloudy with 0 to 1 cm of snow in the Monashees and Selkirks, 2 to 5 cm in the Purcells and 5 to 10 cm in the Rockies. 40 km/h northeast ridgetop wind. Treeline temperature -2 °C. Freezing level 1600 m.

Thursday

Mostly sunny. 10 km/h north ridgetop wind. Treeline temperature -1 °C. Freezing level 1800 m.

Friday

Sunny. 10 km/h northwest ridgetop wind. Treeline temperature +1 °C. Freezing level 2100 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
  • Carefully evaluate big and steep terrain features before committing to them.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Régions couvertes