Bulletin d’avalanche

Crowsnest North

Mar 26 – 27, 2026Avalanche Canada
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Archivé · expiré 6 months ago

Danger d’avalanche

Sat
Sun
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Wind slabs remain possible to human trigger.

Avoid steep, rocky, and wind affected areas where triggering slabs is most likely.

Problèmes avalancheux

  • Wind Slabs

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

    20 to 30 cm of recent snow and extreme southwest winds formed wind slabs on lee aspects at upper elevations. These slabs are most likely to be reactive on steep slopes below ridgetops.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Very Likely
    Taille
    1–1.5

    Expect the sun to trigger wet loose avalanches on steep slopes when the recent snow is warmed for the first time.

Confidence

High

  • We have a good understanding of the snowpack structure and confidence in the weather forecast.

Avalanche Summary

On Wednesday, several naturally triggered wet loose avalanches up to size 1.5 were reported below treeline.

Last week's rain and warm temperatures triggered a widespread natural slab avalanche cycle up to size 3.

If you are heading into the backcountry, please consider sharing conditions via the MIN.

Snowpack Summary

20 to 30 cm of recent snow and extreme southwest winds formed wind slabs on lee aspects at upper elevations. These slabs are most likely to be reactive on steep slopes below ridgetops. The recent snow sits on a thick crust.

The snowpack below is moist to ground and well settled in most locations, except northerly aspects in the alpine.

The snowpack depth tapers rapidly at lower elevations.

Weather Summary

Thursday Night
Clear skies. 50 km/h west ridgetop wind. Treeline temperature -8 °C.

Friday
Sunny. 60 km/h west ridgetop wind. Treeline temperature -6 °C.

Saturday
Sunny. 50 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1900 m.

Sunday
Mix of sun and clouds. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.

Régions couvertes