Bulletin d’avalanche

Northwest Coastal

Dec 16 – 17, 2025Avalanche Canada
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Archivé · expiré 10 months ago

Danger d’avalanche

Thu
Fri
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré

Points saillants

The new snow will take time to stabilize.

As you travel check the bond of the new snow to the old surface. Back down if you encounter signs of instability.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    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

Avalanche Summary

Natural, large ( up to size 3 ) slab avalanches have been observed over the weekend.

Explosive avalanche control also noted sympathetic avalanches.

Once the storm clears, we are expecting to see more evidence of a widespread natural avalanche cycle.

Snowpack Summary

30 to 50 cm of new snow fell this weekend with strong wind. In sheltered areas, the new snow may rest on a weak layer of surface hoar.

The mid and lower snowpack are uncomplicated and relatively deep for the time of year. Snowpack depths in excess of 300 cm can be found at treeline elevations.

Weather Summary

Monday Night
Cloudy. 5 to 10 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Tuesday
Mostly cloudy. 5 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Wednesday
Mostly cloudy. 5 to 10 cm of snow. 20 km/h southeast ridgetop wind. Treeline temperature -9 °C.

Thursday
Mostly cloudy. 5 to 10 cm of snow. 10 km/h southeast ridgetop wind. Treeline temperature -12 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep in mind that human triggering may persist as natural avalanches taper off.
  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.

Régions couvertes