Bulletin d’avalanche

South Rockies

Jan 4 – 5, 2026Avalanche Canada
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Archivé · expiré 9 months ago

Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Wind slabs remain the primary concern with small amounts of new snow expected and continued strong winds at higher elevations.

Weak layers deep in the snowpack persist in shallow areas.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2

    Westerly winds continue to redistribute snow at higher elevations, particularly in areas receiving new snow on Sunday.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely
    Taille
    2–3.5

    A crust with facets deep in the snowpack remains a concern, particularly in areas with a thinner snowpack. While the probability of triggering this layer is low, the consequences could be severe.

Confidence

Moderate

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

Avalanche Summary

Recently, small wind slab avalanches have been observed in very steep, extreme northeast-facing alpine terrain.

Otherwise, no new avalanches have been reported, but observations are extremely limited in the region.

Snowpack Summary

Expect to find wind-affected surfaces in exposed terrain at higher elevations, while a dusting of new snow will bury a variety of old snow surfaces, including surface hoar in terrain sheltered from wind.

Approximately 40 to 80 cm of recent snow continues to settle above a melt-freeze crust that is thin or absent in alpine terrain, while thicker and widespread at treeline and below.

Near the bottom of the snowpack, a series of crusts exists with associated faceted snow.

Check out the AvCan field teams MIN report for a more detailed description of conditions in the Nordstrom area.

Weather Summary

Saturday night

Cloudy. Up to 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1500 m.

Sunday

Mostly cloudy. 10 to 20 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.

Monday

Mostly cloudy. 5 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 1000 m.

Tuesday

Mostly cloudy. Up to 5 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -8 °C. Freezing level 300 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Wind slabs are most reactive during their formation.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Avoid thin areas like rocky outcrops where you're most likely to trigger avalanches on deep weak layers.

Régions couvertes