Bulletin d’avalanche

South Okanagan

Mar 9 – 10, 2025Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Use caution in wind affected terrain

New wind slabs could be reactive to rider traffic

Problèmes avalancheux

  • Wind Slabs

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

    The new snow may not bond well to the underlying surface, making new slabs reactive.

  • Persistent Slabs

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

    Triggering the mid February layer is most likely on high north facing terrain.

Confidence

Moderate

Avalanche Summary

Two large (size 2) storm slabs were triggered with explosives near Kamloops on Thursday.

No other avalanches have been reported in the past 3 days.

Snowpack Summary

By Monday morning 10 to 20 cm of snow could have accumulated with strong southwest winds, forming deeper deposits on north and east facing slopes. This new snow will fall over a widespread melt-freeze crust, in sheltered features small surface hoar crystals  may be on it. The crust exists on all aspects, except possibly high-elevation north-facing slopes.

30 to 60 cm further down is a crust or surface hoar/facet layer from mid February.

A weak layer, buried in late January, consists of surface hoar, facets, and/or a crust, is found 50 to 90 cm deep.

Below this, the mid and lower snowpack is generally settled and strong.

Weather Summary

Sunday Night

Mostly cloudy with up to 10 cm of snow. 40 to 70 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Monday

Cloudy with up to 2 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Tuesday

A mix of sun and cloud with 1 to 3 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Wednesday

Mostly cloudy with 1 to 3 cm of snow. 20 to 40 km/h south ridgetop wind. Treeline temperature -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid freshly wind-loaded terrain features.
  • Use ridges or ribs to avoid areas of wind-loaded snow.
  • Be mindful that deep instabilities are still present in the snowpack.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.

Régions couvertes