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Avalanche Forecast

Archived

Dec 7th, 2025–Dec 8th, 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 and human triggered avalanches likely.
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 unlikely, human triggered possible.

Regions

Northwest Coastal, Kitimat, Nass, Rupert, Seven Sisters, Shames, Stewart, Howson.

New snow, wind and warm temperature is a recipe for elevated avalanche hazard.

Avoid avalanche terrain.

Confidence

Low

Avalanche Summary

A natural avalanche cycle is expected to be ongoing throughout the storm.

If you are getting out in the backcountry, consider making a post on the MIN (Mountain Information Network). You can share riding conditions, avalanche or snowpack observations, even just a photo or two.

Snowpack Summary

Heavy snowfall continues to add to the upper snowpack. This could add up to 120 cm of snow that is sitting on a crust.

Buried surface hoar crystals may still be present in isolated sheltered areas.

The mid and lower snowpack is expected to be strong, with frozen crusts or dense, settled snow.

At treeline around Terrace we expect a snow depth of 100-150 cm. 200-300 cm around Stewart. Snowpack depth gradually thins as elevation decreases.

Weather Summary

Sunday Night
Cloudy. 15 to 30 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -2°C. Freezing level 800 m.

Monday
Cloudy. 20 to 50cm of snow. 50 km/h southwest ridgetop wind Treeline temperature -1 °C. Freezing level 1200 m.

Tuesday
Cloudy. 10 to 25 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 700 m.

Wednesday
Mostly cloudy. 10 to 15 cm of snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -8 °C.



More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid avalanche terrain during periods of heavy snowfall.

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.