Bulletin d’avalanche

South Rockies

Feb 17 – 18, 2025Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

For the best and safest riding, seek out areas of soft snow, untouched by the wind.

Problèmes avalancheux

  • Loose Dry

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

    Loose dry avalanches will be likely in steep terrain where new snow hasn't formed a slab.

  • Storm Slabs

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

    Storm slabs may be triggered in lee, wind-loaded areas near ridge tops.

Confidence

High

Avalanche Summary

On Saturday, there was a small (size 1.5) natural storm slab near Castle and a few small dry loose avalanches.

On Friday, riders triggered several small storm slabs and dry loose avalanches.

Snowpack Summary

Up to 20 cm of low-density snow fell on Friday and Saturday, accompanied by light to moderate northerly wind.

The new snow overlies 20 to 40 cm of mostly faceted snow sitting on a weak layer from late January. The weak layer consists of a crust on sun-exposed slopes, and a layer of surface hoar or facets on all other aspects.

The mid and lower snowpack is generally well settled.

Weather Summary

Sunday Night

Mostly cloudy with 2 to 3 cm of snow. 10 km/h southeast ridgetop wind. Treeline temperature -17 °C.

Monday

A mix of sun and clouds with 2 cm of snow. 10 km/h northwest ridgetop wind. Treeline temperature -14 °C.

Tuesday

A mix of sun and clouds. 15 km/h northeast ridgetop wind. Treeline temperature -18 °C.

Wednesday

Sunny. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -12 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid freshly wind-loaded terrain features.
  • Use appropriate sluff management techniques.

Régions couvertes