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Avalanche Forecast

Archived

Dec 15th, 2025–Dec 16th, 2025

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

Regions

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

Snow continues to fall and wind continues to blow.

Dangerous avalanche conditions persist.

Confidence

Low

Avalanche Summary

Natural slab avalanches were observed up to size 2.5 in the alpine on Saturday. A natural avalanche cycle up to size 3 likely took place on Sunday into Monday, consisting of storm slabs at upper elevations, with loose wet at lower elevations.

Snowpack Summary

At upper elevations, around 60 cm of snow fell with strong wind over the weekend. In sheltered areas, the new snow may sit over a layer of weak, feathery surface hoar crystals. At lower elevations, the storm concluded with heavy rain on Sunday night, which will harden into a crust as temperatures drop over the day Monday.

Snowpack depths in excess of 300 cm can be found at treeline elevations.

Weather Summary

Monday Night
Cloudy. 15 to 25 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 500 m.

Tuesday
Mostly cloudy. 10 to 15 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Wednesday
Mostly cloudy. 10 to 15 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Thursday
Cloudy. 10 to 20 cm of snow. 30 km/h south ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Keep in mind that human triggering may persist as natural avalanches taper off.
  • Make observations and continually assess conditions as you travel.
  • A hard crust on the snow surface will help strengthen the snowpack, but may cause tough travel conditions.

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.