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Avalanche Forecast

Archived

Dec 23rd, 2025–Dec 24th, 2025

Alpine
Natural avalanches possible, human triggered probable.
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 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

South Coast, Powell River, North Shore, Sasquatch, Sky Pilot, Tetrahedron.

Snowfall, wind, and warming are a recipe for dangerous avalanche conditions!

It's a good day to avoid overhead hazard make conservative terrain choices.

Confidence

Moderate

  • Uncertainty is due to the timing, track, & intensity of the incoming weather system.
  • Uncertainty is due to difficult to forecast freezing levels.

Avalanche Summary

Observations have been limited due to stormy conditions in the past week.

With ongoing snowfall, wind, and warming on Wednesday, we expect both natural and human-triggered storm slabs to be likely.

Snowpack Summary

Up to 20 cm of new snow is expected to fall at upper elevations by the end of the day on Monday. This new snow overlies over 100 cm of settled storm snow from the past week.

Beneath the recent snowfall, the snowpack is generally well-settled, consisting of crusts and moist, dense snow. Snow depths at the treeline are estimated to range from 80 to 150 cm.

Weather Summary

Tuesday Night
Mostly cloudy. 5 cm of snow. 20 km/h southeast ridgetop wind. Treeline temperature -4 °C. Freezing level 1100 m.

Wednesday
Cloudy. 15 to 20 cm of snow. 30 to 60 km/h southeast ridgetop wind. Treeline temperature -2 °C. Freezing level rising to 1500 m.

Thursday
Mix of sun and clouds. 15 km/h south ridgetop wind. Treeline temperature -1 °C. Freezing level 1200 m.

Friday
Mostly cloudy. 1 to 2 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Don't let the desire for deep powder pull you into high consequence terrain.
  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Loose avalanches may start small, but they can grow and push you into dangerous terrain.

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.