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Avalanche Forecast

Archived

Dec 27th, 2025–Dec 28th, 2025

Alpine
Natural and human triggered avalanches likely.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural and human triggered avalanches likely.
Treeline
Natural and human triggered avalanches likely.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.

Regions

Northwest Coastal, Boundary, Stewart, Ningunsaw.

UPDATED AT 6:40 AM: Heavy snowfall and wind has caused very dangerous avalanche conditions.

Confidence

Moderate

  • Uncertainty is due to the timing of the incoming weather system.

Avalanche Summary

As the snow piles up we expect a natural avalanche cycle will begin during the day.

A few small natural wind slabs were reported on Wednesday on south through west aspects. Some natural dry loose avalanches were also observed.

Over the past few days, wind slabs have been reported on a variety of aspects and elevations due to the shifting winds, so wind slabs can be expected on all aspects in wind-affected terrain.

Snowpack Summary

20 to 40 cm of new snow is burying old wind slabs on many aspects and in some places extending down into the treeline.

Cold temperatures have faceted the snow surface. The new snowfall this weekend is expected to bond poorly to this weak surface layer.

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

Weather Summary

Saturday Night
Cloudy. 10 to 25 cm of snow. 45 km/h south ridgetop wind. Treeline temperature -14 °C.

Sunday
Cloudy. 15 cm of snow. 50 km/h south ridgetop wind. Treeline temperature -8 °C.

Monday
Cloudy. 25 to 35 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -4 °C.

Tuesday
Cloudy. 10 to 20 cm of snow. 50 km/h south ridgetop wind. Treeline temperature -1 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Travel in alpine terrain is not recommended.
  • Minimize exposure during periods of heavy loading from new snow and wind.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.