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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 Inland, Kitimat, Nass, Rupert, Seven Sisters, Shames, Howson.

Only simple terrain with no exposure to overhead hazard is suitable for the current conditions. 

Stay out of avalanche terrain.

Confidence

Moderate

  • Uncertainty is due to difficult to forecast freezing levels.

Avalanche Summary

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

Several size 1.5-2.5 natural storm slabs and dry loose avalanches were reported in the Skeena River Corridor on Sunday before the warm-up.

Up to 50 cm of new snow, significant precipitation falling as rain or snow over the coming days, and high freezing levels will keep avalanche danger elevated.

Snowpack Summary

30 to 50 cm of snow has fallen over the past 3 days, accompanied by strong southwest winds and warm temperatures that turned the snow to rain on Sunday afternoon. This new precipitation has fallen on faceted snow from the recent cold weather. The new snow is not expected to bond well to the previous faceted surface.

Last week, more than 100 cm of heavy snow fell, strengthening the snowpack and reducing the likelihood of triggering older layers from early December (which include buried surface hoar and crusts).

Snowpack depth is up to 300 cm at treeline.

Weather Summary

Monday Night
Cloudy. 15 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1000 m.

Tuesday
Cloudy. 5 to 10 cm of snow. 50 km/h south ridgetop wind. Treeline temperature -2 °C. Freezing level 800 m.

Wednesday
Cloudy. 4 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 900 m.

Thursday
Mostly cloudy. 4 to 10 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -2 °C. Freezing level 600 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid the runout zones of avalanche paths. Avalanches could run full path.
  • Use increased caution at all elevations. Storm snow is forming touchy slabs.

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.