Bulletin d’avalanche

South Coast Inland

Apr 5 – 6, 2025Avalanche Canada
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Archivé · expiré last year

Danger d’avalanche

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

Forecast 10 to 20 cm of snow and southerly wind on Sunday may form fresh wind slabs at upper elevations.

Problèmes avalancheux

  • Wind Slabs

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

    Forecast 10 to 20 cm of snow and southerly wind on Sunday 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 will become weak with sun and daytime warming. A cornice failure has the potential to trigger a persistent slab avalanche on the slope below.

  • 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 Friday, no new avalanches were reported.

NOTE: Observations are currently very limited in this region.

Snowpack Summary

Forecast 10 to 20 cm of snow and southerly wind on Sunday 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

Saturday Night

Partly cloudy. 10 to 20 km/h south ridgetop wind. Treeline temperature 3 °C. Freezing level 2000 m.

Sunday

Moslty cloudy with flurries, 10 to 20 cm snow above 1700 m, rain below. Another 10 to 20 cm of snow overnight. 20 to 30 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 2000 m.

Monday

Mix of sun and cloud with isolated flurries, 0 to 5 cm snow. 10 to 20 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 1900 m.

Tuesday

Mix of sun and cloud. 5 to 10 km/h south ridgetop wind. Treeline temperature 0 °C. Freezing level 1800 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