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Avalanche Forecast

Archived

Dec 22nd, 2025–Dec 23rd, 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

Northwest Coastal, Boundary, Stewart, Ningunsaw.

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

Confidence

High

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

Avalanche Summary

Wind slab activity has decreased since late last week, when several size 1 to 2 natural and explosive-triggered avalanches occurred. However, recent blowing snow suggests newer slabs may still be present and triggerable.

Snowpack Summary

Strong, shifting winds have heavily affected alpine and treeline terrain, building wind slabs on many aspects and in some places extending well into the trees. The snowpack is generally deep and simple for the time of year, with treeline depths exceeding 300 cm.

Weather Summary

Monday Night
Clear skies. 20 km/h northeast ridgetop wind. Treeline temperature -20 °C.

Tuesday
Mostly sunny. 20 km/h northeast ridgetop wind. Treeline temperature -20 °C.

Wednesday
Sunny. 20 km/h east ridgetop wind. Treeline temperature -18 °C.

Thursday
Mostly sunny. 10 km/h southwest ridgetop wind. Treeline temperature -18 °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.