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Avalanche Forecast

Archived

Dec 16th, 2025–Dec 17th, 2025

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

Regions

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

Snow continues to pile up.

Continually assess conditions and investigate small slopes for the bond of the new snow to the old snow before considering entering avalanche terrain.

Confidence

Moderate

  • Uncertainty is due to how quickly the snowpack will recover and gain strength.

Avalanche Summary

Reports of a natural avalanche cycle up to size 2.5 on Sunday and Monday consisting of storm slabs at upper elevations, with wet loose avalanches at lower elevations.

Snowpack Summary

At upper elevations, around 70 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 in the alpine and over crusts at lower elevations.

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

Weather Summary

Tuesday Night
Cloudy. 5 to 15 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -3 °C.

Wednesday
Cloudy. 5 to 10 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Thursday
Mostly cloudy. 5 to 10 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Monday Night
Mostly cloudy. up to 5 cm of snow. 20 km/h southeast ridgetop wind. Treeline temperature -9 °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.