Bulletin d’avalanche

South Rockies

Mar 29 – 30, 2025Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Surface crust distribution is variable in its supportiveness; moist snow in the upper snowpack is slow to refreeze. Watch out for areas where a supportive melt-freeze crust hasn't formed.

Problèmes avalancheux

  • Persistent Slabs

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

    Where a melt-freeze crust has developed, this layer will be difficult to trigger. With uncertain freezing levels, areas of concern are steep, rocky terrain, where there is no melt-freeze crust.

  • Loose Wet

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

    Recent snow will lose cohesion with even short windows of sun and rising freezing levels. The upper snowpack remains moist in some areas and could release if the melt-freeze crust breaks down.

Confidence

Moderate

Snowpack Summary

Recent snow buries a widespread surface crust that becomes more supportive as you gain elevation.

Refrozen and moist snow can be found in the upper snowpack, depending on elevation, which overlies a settled mid-pack.

In the lower snowpack, a persistent weak layer of facets remains a concern where there is no supportive melt-freeze crust.

Weather Summary

Saturday Night

Mostly cloudy with isolated flurries, 2 to 5 cm. 10 km/h northeast ridgetop wind. Treeline temperature -8 °C.

Sunday

Partly cloudy. 10 to 15 km/h northeast wind. Treeline temperatures -6 °C. Freezing level 1800 m.

Monday

Partly cloudy, isolated flurries 2 cm. 10 to 20 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 1700 m.

Tuesday

Partly cloudy, isolated flurries 1 to 3 cm. 10 to 20 km/h west ridgetop wind. Treeline temperature -3 °C.

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.
  • Make observations and continually assess conditions as you travel.

Régions couvertes