Bulletin d’avalanche

South Coast

Avalanche Canada
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Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Périmé — ce bulletin a expiré 5 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Watch for sun and warming temperatures weakening the upper snowpack on steep slopes. Wet loose avalanches can gain mass quicker than kids filling baskets on an Easter egg hunt.

Problèmes avalancheux

  • Loose Wet

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

    Rising temperatures and full sun will create ideal conditions for loose wet avalanches. Watch for likely trigger points, like rocky outcrops where warming is most intense.

Confidence

High

  • We are confident the likelihood of avalanches will increase with the forecast weather.
  • We have a good understanding of the snowpack structure and confidence in the weather forecast.

Avalanche Summary

No new avalanches have been reported. However a wet loose cycle likely occurred on Saturday.

If you are heading into the backcountry, consider sharing your observations and posting a MIN.

Snowpack Summary

While overnight cooling may produce a surface crust, snow surfaces will rapidly become moist/wet with sunshine and rising temperatures.

Steep south through west facing slopes may have a thin crust 40 cm deep, which may allow for better propagation of wet avalanches. The thick and strong mid-March crust is now expected to be buried 50-60 cm deep.

Below this, the rest of the snowpack is wet but well settled and strong. There is little to no snow below 1000 m.

Weather Summary

Sunday Night
Clear skies. 10 km/h south ridgetop wind. Treeline temperature 11 °C. Freezing level 2800 m.

Monday
Mostly sunny. 20 km/h southwest ridgetop wind. Treeline temperature 8 °C. Freezing level 2500 m.

Tuesday
Mostly sunny. 20 km/h northwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1100 m.

Wednesday
Sunny. 10 km/h northwest ridgetop wind. Treeline temperature 1 °C. Freezing level 1500 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The more the snowpack warms up and weakens, the more conservative your terrain selection should be.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.

Régions couvertes