Bulletin d’avalanche

Microwave-Sinclair

Mar 14 – 15, 2026Avalanche Canada
Voir sur la carte
Archivé · expiré 7 months ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Fresh, reactive wind slabs will form throughout the day.

Buried weak layers mean that triggering large avalanches is possible!

Problèmes avalancheux

  • Wind Slabs

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

    New snow and wind on Sunday will start to form small but reactive slabs in lee terrain features.

  • Persistent Slabs

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

    A buried layer of facets in the snowpack is expected to be more reactive in wind-affected thin rocky terrain features. Triggering of this layer is less likely where a supportive crust is present above.

Confidence

Moderate

  • We are uncertain about how quickly persistent slabs are gaining strength.
  • We are uncertain due to a highly variable snowpack.

Avalanche Summary

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

If you head out in the backcountry, let us know what you're seeing by submitting a MIN report.

Snowpack Summary

Up to 15 cm of new snow overlies surface hoar and facetted snow from recent cold temperatures.

In open areas, strong southerly winds will be redistributing new snow, creating wind slabs and wind-affected surfaces. A crust can be found below this snow up to 1500 m.

Below this, a layer of facets from early February and a thick crust from late January are at a similar depth between 70 and 110 cm. These layers remain possible to trigger with large loads and are most likely to be found on north-facing slopes.

Weather Summary

Saturday Night

Partly cloudy. 1 to 2 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -9 °C.

Sunday

Cloudy. 3 to 10 cm of snow. 30 to 60 km/h south ridgetop wind. Treeline temperature -9 °C.

Monday

Mostly cloudy. 4 to 20 mm of precipitation as snow or rain at treeline. 60 to 110 km/h southwest ridgetop wind. Treeline temperature 0 °C.

Tuesday

Mostly cloudy. 1 to 15 cm of snow. 50 to 90 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.
  • Be aware of the potential for large avalanches due to buried weak layers.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.

Régions couvertes