Bulletin d’avalanche

North Columbia

Apr 23 – 24, 2024Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Thu
Fri
Alpin
1 · Faible
Limite forestière
1 · Faible
Sous la limite
1 · Faible

Points saillants

Watch for pockets of wind slab in leeward alpine features, they may remain triggerable by riders.

Problèmes avalancheux

  • Wind Slabs

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

    Small wind slabs may remain triggerable in lee terrain features at upper elevations. They may be especially reactive where they sit over a crust.

Confidence

Moderate

Avalanche Summary

A handful of small (size 1) skier-triggered storm and wind slab avalanches up to 30 cm deep were reported in the alpine on Monday. Solar-triggered loose wet avalanches were observed up to size 2 in steep alpine terrain.

Last week, cornice failures were notably not propagating any weak layers on slopes below but there was one report of an anomalous remotely skier-triggered size 2 failing on moist snow below a recently buried crust.

Snowpack Summary

A dusting of new snow falls over widespread crusty surfaces on all but high north-facing alpine terrain, where snow is dry and likely wind affected. There are no deeper concerns at this time.

Weather Summary

Tuesday night

Mostly clear. 10 to 30 km/h southeast ridgetop wind. Treeline temperature +3 °C. Freezing level 2300m.

Wednesday

Mostly cloudy with flurries bringing up to 5 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2000m.

Thursday

A mix of sun and cloud. <20 km/h northwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2000m.

Friday

Mostly cloudy with a trace of snow. 10 to 20 km/h southeast ridgetop wind. Treeline temperature 0 °C. Freezing level 2000m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Régions couvertes