Bulletin d’avalanche

Microwave-Sinclair

Mar 2 – 3, 2026Avalanche Canada
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Archivé · expiré 7 months ago

Danger d’avalanche

Wed
Thu
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

Winds have varied throughout this region, with recent avalanches on north and south facing slopes.

Stick to conservative terrain - human triggering of large avalanches is likely

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1.5–2.5

    Wind slabs triggered at higher elevations could run below treeline. Buried weak layers may be reactive in wind affected terrain.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1.5–3

    Facets, surface hoar and crusts in the snowpack are expected to be more reactive in wind affected features, producing widely propagating avalanches.

Confidence

Moderate

  • We are uncertain due to how buried persistent weak layers will react with the forecast weather.
  • We are uncertain due to the variability of wind effect on the snowpack.

Avalanche Summary

Wind slabs up to size 2.5 continue to be observed, likely occurring throughout rapid wind transport. These have occurred in north and south facing terrain features, indicating variability in wind patterns.

Please post any photos or observations to the MIN if you head out.

Snowpack Summary

Up to 30 cm of recent snow has been redistributed into deeper deposits on north and east facing slopes. Windward slopes may be scoured back to an old crust.

Two notable layers exist in the snowpack. A layer of facets from early February, up to 40 cm deep. A thick crust from late January, 50-100 cm deep. Both of these layers are a concern in wind affected terrain.

The remainder of the snowpack is well settled.

Weather Summary

Sunday Night
Partly cloudy. 1 to 2 cm of snow. 60 km/h west ridgetop wind. Treeline temperature -3 °C.

Monday
Mostly cloudy. 1 to 4 cm of snow. 60 km/h west ridgetop wind. Treeline temperature -2 °C.

Tuesday
Mostly cloudy. 4 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Wednesday
Mix of sun and clouds. 2 to 3 mm of precipitation as snow or rain at treeline. 50 km/h southwest ridgetop wind. Treeline temperature 0 °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.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.
  • Be aware of the potential for large avalanches due to buried weak layers.

Régions couvertes