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Avalanche Forecast

Archived

Dec 31st, 2025–Jan 1st, 2026

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

Regions

Northwest Coastal, Boundary, Stewart, Ningunsaw.

6:40 AM Update: Recent strong winds have produced reactive wind slabs.

Avoid leeward features where slabs are likely most reactive.

Confidence

Moderate

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

Avalanche Summary

On Tuesday, numerous storm slab avalanches up to size 3 that occurred within the previous 48 hours were reported throughout the region. These avalanches were reported across all aspects and elevations.

As freezing levels lower, natural avalanche activity has begun to taper off.

Snowpack Summary

70-100 cm of snow fell during the recent storm. Freezing levels have been variable throughout the region, but reports suggest that most areas received snow above 1100 m. This new snow fell on a previously wind-affected and faceted surface from the outflow event at the end of December.

Treeline snow depths throughout the region range from 250 cm to 350 cm.

Weather Summary

Wednesday Night
Mostly cloudy. 1 cm of snow. 10 km/h south ridgetop wind. Treeline temperature -7 °C.

Thursday
Mix of sun and clouds. 10 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Friday
Mostly sunny. 10 km/h west ridgetop wind. Treeline temperature -13 °C.

Saturday
Mostly sunny. 10 km/h south ridgetop wind. Treeline temperature -15 °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 your guard up as storm slabs may remain sensitive to human triggering.

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.