Bulletin d’avalanche

Northwest Inland

Dec 17 – 18, 2025Avalanche Canada
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Archivé · expiré 10 months ago

Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Snow continues to pile up.

Continually assess conditions and investigate small slopes for the bond of the new snow to the old snow before considering entering avalanche terrain.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1.5–3

    New snow is most likely to be reactive.

    • in wind-loaded leeward terrain features at upper elevations

    • in sheltered areas where it may sit over a weak layer of surface hoar

Confidence

Moderate

  • Uncertainty is due to how quickly the snowpack will recover and gain strength.

Avalanche Summary

Reports of a natural avalanche cycle up to size 2.5 on Sunday and Monday consisting of storm slabs at upper elevations, with wet loose avalanches at lower elevations.

Snowpack Summary

At upper elevations, around 70 cm of snow fell with strong wind over the weekend.

In sheltered areas, the new snow may sit over a layer of weak, feathery surface hoar crystals in the alpine and over crusts at lower elevations.

Snowpack depths in excess of 300 cm can be found at treeline elevations.

Weather Summary

Tuesday Night
Cloudy. 5 to 15 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -3 °C.

Wednesday
Cloudy. 5 to 10 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Thursday
Mostly cloudy. 5 to 10 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Monday Night
Mostly cloudy. up to 5 cm of snow. 20 km/h southeast ridgetop wind. Treeline temperature -9 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Keep in mind that human triggering may persist as natural avalanches taper off.
  • Make observations and continually assess conditions as you travel.
  • A hard crust on the snow surface will help strengthen the snowpack, but may cause tough travel conditions.

Régions couvertes