Bulletin d’avalanche

South Coast Inland

Feb 16 – 17, 2024Avalanche Canada
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Archivé · expiré 3 years ago

Danger d’avalanche

Sun
Mon
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Beware of wind slabs in steep alpine terrain.

Problèmes avalancheux

  • Wind Slabs

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

    Shifting wind has formed small but reactive wind slabs in the alpine.

Avalanche Summary

Reports from Wednesday suggest small (size 1) wind slabs were reactive on a variety of aspects in the alpine and upper treeline elevations. The slabs were 10 to 20 cm thick, with some failing on a buried surface hoar layer.

Confidence

High

Snowpack Summary

Wind and sun have created variable surface conditions, with northeast wind heavily impacting open terrain.

15 to 30 cm of snow sits above a widespread crust. Many areas have reported a weak surface hoar layer above this crust, which could be problematic in areas where wind has formed a slab above the layer.

Snowpack depths decrease rapidly below treeline.

Weather Summary

Thursday Night

Clear skies. 30 km/h east ridgetop wind. Treeline temperature -12 °C.

Friday

Sunny. 30 km/h southeast ridgetop wind. Treeline temperature -5 °C.

Saturday

Mix of sun and cloud. 20 km/h south ridgetop wind. Treeline temperature -5 °C.

Sunday

Cloudy with 2 to 4 cm of snow. 10 km/h west ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.

Régions couvertes