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Avalanche Forecast

Archived

Mar 11th, 2025–Mar 12th, 2025

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

South Okanagan, Shuswap, North Okanagan.

Assess steep slopes for wind slabs before committing.

Confidence

High

Snowpack Summary

Around 15 to 30 cm of snow since Saturday rests on a hard melt-freeze crust. Recent south to west wind may have blown the snow into lee terrain features in wind-exposed terrain at high elevations.

A couple weak layers of surface hoar and/or faceted grains associated with a crust from late January and mid February may be found 40 to 60 cm deep.

The remainder of the snowpack is strong.

Weather Summary

Tuesday Night

Cloudy with 2 to 5 cm of snow. 20 to 30 km/h south ridgetop wind. Treeline temperature -6 °C.

Wednesday

Mostly cloudy with 1 cm of snow. 20 to 30 km/h south ridgetop wind. Freezing level rising to 1500 m.

Thursday

Cloudy with 5 to 10 cm of snow. 20 to 30 km/h west ridgetop wind. Treeline temperature -5 °C.

Friday

Partly cloudy. 20 km/h south ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Use ridges or ribs to avoid areas of wind-loaded snow.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.