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Avalanche Forecast

Archived

Dec 29th, 2025–Dec 30th, 2025

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.
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.

Human triggered avalanches are very likely.

Seek out simple terrain with no exposure to overhead hazard.

Confidence

Moderate

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

Avalanche Summary

A natural avalanche cycle is expected to occur throughout the duration of this storm.

Over the past few days, numerous storm slab and dry loose avalanches have been reported throughout this region, occurring at all aspects and elevations.

Snowpack Summary

Up to 70 cm of new snow has buried a previously faceted and wind-affected surface. New snow is expected to bond poorly to the previous surface.

Treeline snow depths exceed 300 cm.

Weather Summary

Monday Night
Cloudy. 10 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -2 °C. Freezing level 800 m.

Tuesday
Cloudy. 5 to 10 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -2 °C. Freezing level 900 m.

Wednesday
Mostly cloudy. 5 to 10 cm of snow. 30 km/h south ridgetop wind. Treeline temperature -5 °C. Freezing level 400 m.

Thursday
Mostly cloudy. 2 cm of snow. 10 km/h southeast ridgetop wind. Treeline temperature -9 °C. Freezing level 0 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Minimize exposure during periods of heavy loading from new snow and wind.
  • Keep your guard up as storm slabs may remain sensitive to human triggering.

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.

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.