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Avalanche Forecast

Archived

Dec 18th, 2025–Dec 19th, 2025

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

Be careful as you transition into wind-affected terrain. If triggered, wind slabs may slide easily on an underlying crust.

Confidence

Moderate

  • Uncertainty is due to the limited number of field observations.

Avalanche Summary

No new avalanche activity has been reported since Wednesday when several small human-triggered wind slab and storm slab avalanches were observed, running on the crust.

Snowpack Summary

Up to 40 cm of recent storm snow is being redistributed by southwest winds, forming fresh wind slabs over a crust that extends up to 2200 m.

A faceted crust from mid November can be found in the lower snowpack but is not currently a concern.

Weather Summary

Friday Night
Mostly cloudy. 1 to 2 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Saturday
Mostly cloudy. 1 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Sunday
Mostly cloudy. 2 to 5 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -6 °C.

Monday
Mix of sun and clouds. 2 to 10 cm of snow. 50 km/h southwest 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.
  • Keep in mind a buried crust offers an excellent bed surface for avalanches.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.

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.