Bulletin d’avalanche

Akamina

Feb 16 – 17, 2025Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Storm slabs have been reactive - start with conservative terrain and watch for signs of instability.

For the best and safest riding, seek out areas of soft snow with no wind effect.

Problèmes avalancheux

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely - Very Likely
    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
    Likely
    Taille
    1–1.5

    Storm slabs will be more reactive in lee wind-loaded areas near ridgetops.

Confidence

Moderate

Avalanche Summary

On Friday, skiers cut several small (size 1) storm slabs and dry loose avalanches near Castle Mountain. On Thursday, a skier accidentally triggered a small size 1 wind slab in a fan feature on a northeast-facing alpine slope.

Looking forward, we expect the potential for triggering small storm slabs and loose dry avalanches will remain likely.

Snowpack Summary

Up to 20 cm of very low-density new snow fell in the last storm, accompanied by light to moderate northerly wind. An additional 5 to 10 cm may fall by the end of the day Sunday. The combined storm 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 on all other aspects. The mid and lower snowpack is generally well settled.

Weather Summary

Saturday Night

Cloudy with 0 to 3 cm of snow. 5 to 10 km/h west ridgetop wind. Treeline temperature -18 °C.

Sunday

Cloudy with 4 to 8 cm of snow. 5 to 15 km/h variable ridgetop wind. Treeline temperature -15 °C.

Monday

Partly cloudy with 0 to 3 cm of snow. 5 to 10 km/h northeast ridgetop wind. Treeline temperature -16 °C.

Tuesday

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

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Avoid freshly wind-loaded terrain features.
  • Use appropriate sluff management techniques.

Régions couvertes