Bulletin d’avalanche

North Rockies

Apr 25 – 28, 2025Avalanche Canada
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Archivé · expiré last year

Danger d’avalanche

Sun
Mon
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

It may still be possible to trigger avalanches in extreme terrain.

Monitor the surface crust. As it breaks down, start heading home.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–1.5

    On Monday, small wind slabs may form as new snow falls with wind.

  • Cornices

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

    Cornices are more likely to fail during warm weather.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–1.5

    If there is a thick crust on the surface, wet avalanches are unlikely.

    The likelihood of wet avalanches will decrease on Sunday and Monday.

Confidence

Low

Avalanche Summary

On Wednesday, there was a large cornice failure that triggered a wet loose avalanche out of extreme terrain.

Observations are limited at this time of year.

Snowpack Summary

A thin, surface crust is likely to form overnight and may break down each day. On northerly slopes in the alpine, there is 10 to 20 cm of preserved soft snow over settled old snow. Everywhere else there is a thick crust buried 10 to 20 cm deep.

Most terrain has undergone strong melt-freeze cycles, creating a strong, well bonded snowpack.

Weather Summary

Friday Night

Partly cloudy. 20 to 40 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1400 m.

Saturday

Mix of sun and clouds. 10 to 20 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 1800 m.

Sunday

Mostly cloudy with 0 to 10 cm of snow. 10 to 20 km/h northeast ridgetop wind. Treeline temperature -1 °C. Freezing level 1700 m.

Monday

Cloudy with 5 to 10 cm of snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.
  • Avalanche danger will increase as the surface crust breaks down.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Régions couvertes