Bulletin d’avalanche

Lizard-Flathead

Dec 19 – 20, 2025Avalanche Canada
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Archivé · expiré 9 months ago

Danger d’avalanche

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

Points saillants

Storm slabs remain reactive to human triggers, especially in wind affected terrain.

Continue to make conservative terrain choices while the storm snow settles and stabilizes.

Problèmes avalancheux

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–3

    Up to 70 cm of recent snow and strong west winds have formed fresh storm slabs that will be most reactive in wind affected terrain.

Confidence

Moderate

  • Uncertainty is due to the limited number of field observations.

Avalanche Summary

On Wednesday, numerous explosive triggered storm slab avalanches up to size 2 were reported at treeline and above on a variety of aspects.

Snowpack Summary

50-70 cm of recent snow and strong west winds have formed slabs overlying a thick crust.

Below the crust, the snowpack is moist to the ground.

Weather Summary

Thursday Night
Cloudy. 10 to 20 cm of snow. 70 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1900 m.

Friday
Mostly cloudy. 50 km/h west ridgetop wind. Treeline temperature -6 °C. Freezing level 1300 m.

Saturday
Mostly cloudy. 5 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -8 °C. Freezing level valley bottom.

Sunday
Mostly cloudy with isolated flurries. 0 to 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -6 °C. Freezing level 1600 m.




More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Avoid freshly wind-loaded features, especially near ridge crests, rollovers, and in steep terrain.
  • Use small, low consequence slopes to test the bond of the new snow.
  • Closely monitor how the new snow is bonding to the crust.

Régions couvertes