Bollettino valanghe

Lizard-Flathead

Dec 20 – 21, 2025Avalanche Canada
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Archiviato · scaduto 9 months ago

Pericolo valanghe

Mon
Tue
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato

In sintesi

Up to 70 cm of recent snow and strong southwest winds continue to form wind slabs reactive to human triggers.

Make conservative terrain choices and avoid overhead hazard.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3

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

Confidence

Moderate

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

Avalanche Summary

No new avalanches were reported on Thursday.

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

10 to 20 cm of new snow brings recent snow totals to 50 to 70 cm. The recent snow and strong west winds have formed slabs overlying a 3 to 15 cm thick crust.

Below the crust, the snowpack is moist to the ground in most areas.

Weather Summary

Friday Night
Cloudy with flurries. 5 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -9 °C. Freezing level valley bottom.

Saturday
Cloudy with isolated flurries. 0 to 5 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -9 °C. Freezing level valley bottom.

Sunday
Mostly cloudy with isolated flurries. 0 to 5 cm of snow. 35 km/h southwest ridgetop wind. Treeline temperature -7 °C. Freezing level valley bottom.

Monday
Mostly cloudy with isolated flurries. 0 to 5 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -6 °C. Freezing level valley bottom.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Keep your guard up at all elevations. Wind slab formation has been extensive and could extend into openings below treeline.
  • Closely monitor how the new snow is bonding to the crust.

Regioni coperte