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Avalanche Forecast

Archived

Dec 17th, 2025–Dec 18th, 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 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

Vancouver Island, East Island, North Island, South Island, West Island.

Avoid avalanche terrain during intense snowfall.

Storms slabs are likely to build through the day, especially in lee areas.

Confidence

Moderate

  • Uncertainty is due to the track & intensity of the incoming weather system.

Avalanche Summary

The likelihood of avalanches will increase through the day as a base of snow starts to build, and snow-covered terrain starts to connect.
There have been no recent reports of avalanches, however, natural avalanche activity may occur during intense loading on Thursday.

There have been very few backcountry reports. If you head out, please share observations and photos on the MIN.

Snowpack Summary

The incoming storm is expected to add 40 to 70 cm of snow. At upper elevations, this could double the snowpack, as it's very thin with just 20 to 50 cm of rain-soaked snow on the ground above 1000 m and bare ground at lower elevations.

The shallow snowpack continues to make travel and access challenging across most riding areas, but things are looking up as snow is expected to fall to low elevations.

Weather Summary

Wednesday Night
Cloudy with 20 to 30 cm of snow down to 600 m. 50 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Thursday
Cloudy with 25 to 45 cm of snow down to 400m, rising to 800 m in the afternoon. 50 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Friday
Mostly cloudy with 5 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 800 m.

Saturday
Mostly cloudy with 10 to 20 cm of snow. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid avalanche terrain during periods of heavy snowfall.
  • Watch for fresh storm slabs building throughout the day.
  • Be cautious of buried obstacles, especially below treeline.

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.