Bulletin d’avalanche

Kootenay Boundary

Avalanche Canada
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Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Périmé — ce bulletin a expiré 5 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Start early and plan to be away from sunny slopes before they heat up.

The danger is likely low in the morning and will rise with daytime warming.

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1.5–2.5

    Cornices are unpredictable and are more likely to fail in warm periods. Avoid travelling on or under them.

  • Loose Wet

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

    If the sun comes out, it will likely trigger wet loose avalanches on steep sunny slopes.

Confidence

High

  • We are confident due to a stable weather pattern.

Avalanche Summary

There have been many small, natural wet loose avalanches over the past three days. As well as a few natural cornice failures.

Snowpack Summary

A new surface crust has likely formed to mountian top on slopes that face the sun, and to around treeline on shaded slopes.

A thick crust is buried 30 to 40 cm deep, which makes triggering unlikely for any weak layers that persist below it in the upper snowpack.

The mid and lower snowpack is strong in most areas. Snowpack depth tapers rapidly at lower elevations.

Weather Summary

Sunday Night
Mostly clear skies. 10 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2500 m.

Monday
Mostly sunny. 1 mm of rain at treeline in the late afternoon. 30 km/h southwest ridgetop wind. Treeline temperature 5 °C. Freezing level 2700 m.

Tuesday
Mix of sun and clouds. Up to 5 cm of snow at treeline. 40 km/h west ridgetop wind. Treeline temperature -4 °C. Freezing level falling to 1600 m.

Wednesday
Mostly sunny. 30 km/h northwest ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Start your day early and be out of avalanche terrain during the heat of the day.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.

Régions couvertes