Bulletin d’avalanche

South Coast

Mar 13 – 14, 2024Avalanche Canada
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Archivé · expiré 3 years ago

Danger d’avalanche

Fri
Sat
Alpin
4 · Fort
Limite forestière
4 · Fort
Sous la limite
3 · Marqué
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Points saillants

Sudden warming and sun will cause a natural avalanche cycle on Thursday. Avoid avalanche terrain.

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    2.5–3

    Heat and sun will weaken overhanging cornices.

  • Storm Slabs

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

    Warming could also trigger slabs in the top 30 to 50 cm of recent storm snow.

  • Loose Wet

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

    Sudden warming will produce widespread wet loose avalanches, especially on steep sun-exposed slopes.

Confidence

High

Avalanche Summary

Over the past few days there have been several small (size 1) storm slab and wet loose avalanches.

Looking forward, warming will cause large wet loose, cornice, and slab avalanches.

Snowpack Summary

Sudden warming on Thursday will cause moist surfaces on all but the highest north-facing terrain.

Roughly 30 to 50 cm of storm snow from the past few days has been settling, and may still be poorly bonded in higher elevations that have stayed cooler over the past few days.

Weather Summary

Wednesday Night

Clearing skies. 25 km/h northwest ridgetop wind. Treeline temperature -2 °C.

Thursday

Mostly sunny. 25 km/h northwest ridgetop wind. Treeline temperature +5 °C with freezing level climbing to 3000 m by midday.

Friday

Mostly sunny. 15 km/h east ridgetop wind. Treeline temperature +10 °C with freezing level climbing to 3500 m.

Saturday

Sunny. 40 km/h east ridgetop wind. Treeline temperature +14 °C with freezing level sustained at 3500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid all avalanche terrain during periods of intense solar radiation.
  • Avoid areas with overhead hazard, especially solar aspects.
  • Cornices become weak with daytime heating or solar exposure.
  • Only the most simple non-avalanche terrain free of overhead hazard is appropriate at this time.

Régions couvertes