Bulletin d’avalanche

South Columbia

Feb 25 – 26, 2026Avalanche Canada
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Archivé · expiré 7 months ago

Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué
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Points saillants

Wind will redistribute the new snow and continue to add load to buried weak layers.

Stick to low-consequence terrain, as it is still possible to trigger large persistent slabs.

Problèmes avalancheux

  • Persistent Slabs

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

    Three problematic persistent weak layers exist in the upper 150 cm of the snowpack. These layers continue to surprise people with instances of remote triggering and releasing on low angle slopes in unexpected areas.

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2.5

    New snow, combined with steady strong to extreme wind, will form new reactive storm and wind slabs. Expect these slabs to be most reactive on lee slopes.

Terrain and Travel Advice

  • Remote triggering is a concern; avoid terrain where triggering overhead slopes is possible.
  • Avoid exposure to overhead avalanche terrain; avalanches may run surprisingly far.
  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.
  • Fresh snow rests on a problematic persistent slab, don't let good riding lure you into complacency.

Confidence

Moderate

  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

Avalanche Summary

Numerous natural (size 2 to 3) and human-triggered (size 1 to 2) wind and persistent slab avalanches have been occurring daily. Some of them are being triggered accidentally or remotely (from a distance) and are occurring on all aspects and elevations.

Expect persistent slabs to continue to be reactive as snowfall continues to add load to the buried weak layers.

Snowpack Summary

Light snowfall adds to the recent new snow, which now totals 25 to 40 cm. Moderate southerly wind has redistributed this snow.

Three persistent weak layers of concern may be found in the upper 150 cm of the snowpack:

  • 45 to 60+ cm down is a layer of surface hoar in sheltered areas, or a melt-freeze crust on sun-exposed slopes from mid-February.

  • 60 to 100+ cm down is the early-February layer of surface hoar in wind-sheltered terrain and a crust on sun-exposed slopes.

  • 80 to 120 cm down is the late-January layer of surface hoar and facets over a melt-freeze crust.

All of these persistent layers have continued to produce large avalanches in the region.

The remainder of the snowpack below is well consolidated.

Weather Summary

Tuesday Night

Mostly cloudy. 2 to 5 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -8 °C.

Wednesday

Cloudy. 5 to 15 cm of snow. 50 km/h west ridgetop wind. Treeline temperature -8 °C.

Thursday

Cloudy. 15 to 30 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Friday

Cloudy. 10 to 15 cm of snow. 50 km/h west ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Régions couvertes