Bulletin d’avalanche

South Coast

Apr 24 – 25, 2023Avalanche Canada
Voir sur la carte
Archivé · expiré 3 years ago

Danger d’avalanche

Wed
Thu
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré

Points saillants

A rising freezing level will increase avalanche hazard. Use extra caution near cornices and reduce exposure to steep slopes as the snow moisten.

Problèmes avalancheux

  • Cornices

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

    Cornices are large at this time of year and will become more prone to fail as they warm up with spring weather. Stay well back from them when travelling on ridgelines and limit your exposure when travelling on slopes below them.

  • Loose Wet

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

    Wet loose avalanche activity is expected to continue during periods of strong sun and with daytime warming. Limit your exposure to steep terrain on sun-exposed slopes during periods of strong sun and anywhere the snow starts feeling sloppy.

Confidence

High

Avalanche Summary

We haven't received any recent avalanche observations but suspect that loose wet avalanches were triggered naturally during Sunday night's stormy weather.

We expect to see similar avalanches in the coming days during periods of sunny skies and an increasing freezing level.

Avoiding cornice exposure is a good idea, as they are very large and looming at this time of year.

Snowpack Summary

Rain has soaked the upper snowpack, leaving a moist snow surface that may freeze into a melt-freeze crust overnight. Increasing freezing levels and periods of sun will moisten the snow with daytime warming.

The remainder of the snowpack is strong and well-bonded.

Cornices are large and looming at this time of year.

Weather Summary

Monday Night

Partly cloudy with no precipitation, 10 km/h west wind, treeline temperature -1 °C, freezing level 1300 m.

Tuesday

Mostly cloudy with some sunny breaks and no precipitation, 20 km/h west wind, treeline temperature 4 °C, freezing level rising to 1900 m.

Wednesday

Mix of sun and cloud with trace rain, 20 km/h southwest wind, treeline temperature 7 °C, freezing level 2700 m.

Thursday

Sunny with no precipitation, 10 km/h variable wind, treeline temperature 10 °C, freezing level 3600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Avoid terrain traps such as gullies and cliffs where the consequence of any avalanche could be serious.

Régions couvertes