Bulletin d’avalanche

North Rockies

Dec 19 – 20, 2025Avalanche Canada
Voir sur la carte
Archivé · expiré 9 months ago

Danger d’avalanche

Sun
Mon
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

New snow and wind continue to build wind slabs at upper elevations.

Choose low-angled, sheltered terrain where new snow hasn't been wind-affected.

Problèmes avalancheux

  • Wind Slabs

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

    New storm snow and wind will continue to build new wind slabs over older wind slabs that are likely to linger where they have built over a melt freeze crust. Recent shifting wind direction built wind slabs on most slopes at treeline and above.

Confidence

Avalanche Summary

As we transition into a cooler, stormy period we expect to see wind slab avalanches remain active.

These avalanches will be more reactive where they are forming over the most recent crust.

Snowpack Summary

Accumulated storm snow is roughly 20 to 40 cm and sits on a melt-freeze crust that extends up to 2000 m.

The surface snow has been heavily impacted by wind in open terrain features.

A layer of surface hoar, facets and/or a crust exists around 100 cm deep. This layer appears to be improving but may still be present in high alpine terrain. In thin snowpack areas, faceted grains or depth hoar may exist at the base of the snowpack.

Weather Summary

Thursday Night
Mostly cloudy. 10 to 15 cm of snow, highest amounts NE of Prince George. 20 km/h south ridgetop wind. Treeline temperature -17 °C.

Friday
Mix of sun and clouds. 1 to 5 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -20 °C.

Saturday
Mix of sun and clouds. 2 to 5 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -16 °C.

Sunday
Mostly cloudy. 3 to 5 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -15 °C.

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 freshly wind-loaded features, especially near ridge crests, rollovers, and in steep terrain.

Régions couvertes