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Avalanche Forecast

Archived

Dec 23rd, 2025–Dec 24th, 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, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Northwest Coastal, Boundary, Stewart, Ningunsaw.

Stay warm and watch for wind slabs on steep open slopes.

Confidence

High

  • The number, quality, or consistency of field observations is good, and supports our confidence.

Avalanche Summary

Natural wind slab avalanches (size 1 to 2) were observed on multiple aspects on Monday. Moderate to strong winds will continue to build wind slabs, with wind direction varying by elevation.

Snowpack Summary

Strong, shifting winds have heavily affected alpine and treeline terrain, building wind slabs on many aspects and in some places extending into the trees.

Cold temperatures are faceting the surface, which may become an issue with new snow this weekend.

The snowpack remains generally deep and simple for the time of year, with treeline depths exceeding 300 cm.

Weather Summary

Tuesday Night
Clear skies. 40 km/h wind, direction could vary significantly with elevation. Treeline temperature -18 °C.

Wednesday
Mostly sunny. 0 to 1 cm of snow. 50 km/h wind, direction could vary significantly with elevation. Treeline temperature -16 °C.

Thursday
Mix of sun and cloud. 20 km/h south ridgetop wind. Treeline temperature -20 °C.

Friday
Sunny. 20 km/h west ridgetop wind. Treeline temperature -25 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Use ridges or ribs to avoid areas of wind-loaded snow.
  • Recent wind has varied in direction, so watch for wind slabs on all aspects.

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.