Bollettino valanghe

North Rockies

Dec 29 – 30, 2025Avalanche Canada
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Archiviato · scaduto 9 months ago

Pericolo valanghe

Wed
Thu
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole

In sintesi

Strong westerly winds are expected to form fresh, reactive wind slabs. Watch for deposition near ridgelines and also in midslope features, further downslope than typical.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–2

    Strong westerly winds are likely to have formed fresh and reactive slabs on north and east facing slopes. Slabs may sit over new weak layers of facets, or surface hoar.

Confidence

Moderate

  • Uncertainty is due to the speed, direction, or duration of the wind and its effect on the snowpack.
  • Uncertainty is due to the limited number of field observations.

Avalanche Summary

No new avalanches have been reported in the past 5 days.

If you are heading into the backcountry, please consider sharing your observations via the Mountain Information Network

Snowpack Summary

Strong westerly winds have likely redistributed recent snow into deeper deposits on north and east facing slopes at higher elevations.

A prominent crust, formed in mid-December, is now buried 60 to 100 cm deep. This crust extends up to 1800 m near the Pine Pass area.

In thin snowpack areas, faceted grains or depth hoar may exist at the base of the snowpack.

Weather Summary

Sunday Night
Cloudy. 1 to 5 cm of snow. 80 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Monday
Cloudy. 1 to 2 cm of snow. 80 km/h southwest ridgetop wind. Treeline temperature -6 °C.

Tuesday
Mostly cloudy. 2 to 25 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -3 °C.

Wednesday
Mostly cloudy. 3 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Expect slab conditions to change drastically as you move into wind-exposed terrain.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.

Regioni coperte