Bulletin d’avalanche

Coquihalla

Apr 7 – 8, 2025Avalanche Canada
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Archivé · expiré last year

Danger d’avalanche

Wed
Thu
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 above the rain/snow line.

Watch for changing conditions throughout the day.

Problèmes avalancheux

  • Wind Slabs

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

    Forecast snow and wind may form fresh wind slabs on leeward slopes above the rain/snow line.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–1.5

    Wet loose avalanches will be possible when the snow surface is wet or moist. Use good sluff management techniques.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported.

Observations are currently very limited in the region. If you head into the backcountry, please consider submitting a MIN report.

Snowpack Summary

10 to 30 cm of new snow is forecast for overnight and through Tuesday at upper elevations. Combined with moderate southwesterly wind, wind slabs are expected to form in wind-loaded terrain near ridgetops. Freezing levels are uncertain, but currently the rain/snow line is expected to be around 1500 m. The new snow will overlie moist / wet snow or a crust.

An old persistent weak layer of facets may still be present 100 to 150 cm below the surface on high north-facing slopes. Triggering this layer is considered unlikely at this time.

Treeline elevations still hold over 200 cm of snow, but coverage is rapidly thinning at lower elevations.

Weather Summary

Monday Night

Cloudy with 10 to 20 cm of snow above 1500 m, possible rain below. Highest amounts forecast for the western region. 20 to 30 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1500 m, dropping to 1200 m.

Tuesday

Mostly cloudy, with 2 to 10 cm of snow above 1500 m, possible light rain below. Highest amounts forecast for the western region. 30 km/h south ridgetop wind. Treeline temperature -1 °C. Freezing level rising to 1700 m.

Wednesday

Partly cloudy. 15 to 30 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level rising to 1800 m.

Thursday

Mostly cloudy with possible light rain. 40 km/h south ridgetop wind. Treeline temperature +3 °C. Freezing level rising to 2000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for rapidly changing conditions during periods of heavy loading from new snow, wind, or rain.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Régions couvertes