Bulletin d’avalanche

South Coast Inland

Apr 6 – 7, 2025Avalanche Canada
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Archivé · expiré last year

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Forecast snow and southerly wind may form fresh wind slabs at upper elevations.

Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

Problèmes avalancheux

  • Wind Slabs

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

    Forecast snow and southerly wind may form fresh wind slabs at upper elevations.

  • Cornices

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

    Cornices loom over ridgetops and may be triggered by rapid snow loading or people traveling along ridgelines.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3

    Human-triggered persistent slab avalanches may still be possible on high north-facing slopes. They are most likely to be triggered by cornice falls or smaller avalanches in motion.

Confidence

Moderate

Avalanche Summary

On Saturday, a skier triggered a size 1 wind slab on a north aspect in the alpine. Numerous naturally triggered size 1 wet loose avalanches were also reported on solar aspects.

NOTE: Observations are currently very limited in this region.

Snowpack Summary

Forecast snow and southerly wind may form fresh wind slabs at upper elevations.

These slabs will overlie mostly crusty surfaces other than northerly aspects in the alpine where the snow surface remained dry.

Persistent weak layers from January, February, and March are buried 50 to 150 cm deep across the region, though their current reactivity remains uncertain.

At lower elevations, the rain-saturated snowpack thins quickly with elevation.

Weather Summary

Sunday Night

Mostly cloudy with flurries, 5 to 15 cm snow above 1500 m, rain below. 10 to 20 km/h south ridgetop wind. Treeline temperature -1 °C. Freezing level 1800 m.

Monday

Mostly cloudy with isolated flurries, 3 to 10 cm snow. 10 to 20 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1800 m.

Tuesday

Mostly cloudy with isolated flurries, 0 to 5 cm snow. 10 to 20 km/h south ridgetop wind. Treeline temperature -1 °C. Freezing level 1700 m.

Wednesday

Mostly cloudy with isolated flurries, 0 to 3 cm snow. 10 to 20 km/h south ridgetop wind. Treeline temperature -1 °C. Freezing level 1600 m.

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.
  • Cornice failures could trigger large and destructive avalanches.

Régions couvertes