Bulletin d’avalanche

Kootenay Boundary

Avalanche Canada
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Danger d’avalanche

Thu
Fri
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Périmé — ce bulletin a expiré 4 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Use caution in steep terrain where the snow is wet and slushy. Continue to give cornices a wide berth when travelling on or below ridges.

Problèmes avalancheux

  • Cornices

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

    Cornices are more likely to fall when the daytime temperature is at its highest and the sun is out.

  • Loose Wet

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

    With above zero temperatures remaining into the alpine overnight, expect surface snow to remain wet or moist on all aspects. Wet avalanches will be largest and most likely in the heat of the afternoon on slopes facing the sun.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.
  • The snowpack structure is well understood.

Avalanche Summary

Many small wet loose and slab avalanches were observed during warm weather over the past few days. They've been observed on all aspects and elevations. A few cornices also released naturally during warm weather.

Similar avalanches are possible on Wednesday as warm weather continues.

Please consider sharing your observations via the MIN.

Snowpack Summary

Warm air and rain have wet the snow surface to mountain top.

Numerous crusts are found in the upper section of the snowpack. The mid and lower snowpack is strong.

The snowpack continues to melt below treeline.

Weather Summary

Tuesday Night
Mostly cloudy. 1 to 5 mm of rain at treeline. 20 km/h north ridgetop wind. Treeline temperature 6 °C. Freezing level 3200 m.

Wednesday
Mix of sun and clouds. 40 km/h northwest ridgetop wind. Treeline temperature 4 °C. Freezing level 2600 m.

Thursday
Mix of sun and clouds with isolated flurries. 1 to 4 cm of snow. 30 km/h northwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1700 m.

Friday
Mostly cloudy. 1 to 3 cm of snow. 20 km/h north ridgetop wind. Treeline temperature -5 °C. Freezing level 1600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Régions couvertes