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Avalanche Forecast

Archived

Dec 14th, 2025–Dec 15th, 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 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

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

In the wake of the storm, avalanche danger will remain elevated at most elevations on Monday.

Confidence

Moderate

Avalanche Summary

Natural slab avalanches were observed up to size 2.5 in the alpine on Saturday. We are still awaiting observations from the later half of the storm over the weekend. A natural cycle up to size 3 is likely, storm slabs at upper elevations, with loose wet at lower elevations.

Snowpack Summary

At upper elevations, around 80 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.

In general, this season's upper elevation snowpack is shaping up as the ideal coastal snowpack; deep, strong and uncomplicated. Snowpack depths in excess of 300 cm can be found at treeline elevations.

Weather Summary

Sunday night
Cloudy. 30 to 50 mm of mixed precipitation. 90 km/h southwest ridgetop wind. Treeline temperature +2 °C. Freezing level 1700 m.

Monday
Cloudy. 5 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature +1 °C in the morning, cooling to -2 °C. Freezing level 1700 m dropping to valley bottom.

Tuesday
Partly cloudy. 5 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -2 °C.

Wednesday
Partly cloudy. 5 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -3 °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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.