Bulletin d’avalanche

South Okanagan

Feb 29 – Mar 1, 2024Avalanche Canada
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Archivé · expiré 3 years ago

Danger d’avalanche

Sat
Sun
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

New snow is expected to arrive with southwest wind making wind slabs the main concern. Avalanche danger may increase through the day in the south of the region where more snowfall is expected.

Problèmes avalancheux

  • Wind Slabs

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

    Wind slabs may remain triggerable to riders. Assess for slabs in lee terrain features prior to committing.

  • Persistent Slabs

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

    A weak layer of facets may exist above a hard melt-freeze crust that formed in early February. Humans could trigger this layer, or smaller avalanches could step down and form large avalanches.

Confidence

Moderate

Avalanche Summary

We have not received any reports of avalanche the last few days.

Looking forward, it remains possible that riders could trigger wind slabs in lee terrain features at higher elevations.

Snowpack Summary

Moderate southwest wind is expected redistribute new snow falling Wednesday night through Thursday, forming wind slabs in lee terrain features near ridges. Soft snow may prevail in terrain sheltered from the wind.

A thick and hard widespread crust that formed in early February is buried 40 to 60 cm deep. This crust may have a weak layer of facets sitting above it.

Weather Summary

Wednesday Night

Cloudy with 3-8 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1600 m.

Thursday

Cloudy with 5 - 15 cm of snow. 15 to 30 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1300 m.

Friday

Mainly cloudy with scattered flurries. 15 to 30 km/h south ridgetop wind. Treeline temperature -5 °C. Freezing level 1000 m.

Saturday

Mix of sun and cloud. 15 to 30 km/h southeast ridgetop wind. Treeline temperature -4 °C. Freezing level 1000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Carefully monitor the bond between the new snow and old surface.
  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
  • Watch for avalanche hazard to increase throughout the day.

Régions couvertes