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Avalanche Forecast

Archived

Dec 21st, 2025–Dec 22nd, 2025

Alpine
Natural avalanches possible, human triggered probable.
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 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.

Regions

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

Storm slab size and sensitivity is trending towards HIGH through Monday with heavy snowfall and strong winds.

Confidence

Moderate

  • We are confident the likelihood of avalanche will increase with the arrival of the forecast weather.

Avalanche Summary

No recent avalanche activity has been reported in the past several days. However, storm slabs have been reactive to riders and explosives in the neighbouring Sea to Sky region, and both regions have experienced similar stormy weather.

Natural avalanche activity remains possible with continued storm snow accumulation.

Snowpack Summary

Stormy conditions continue to build the previously thin snowpack. A thin melt-freeze crust caps most surfaces or is just under the most recent flurries, covering 30-60 cm of snow that accumulated over the week.

Beneath the recent snowfall, the snowpack is generally well-settled, consisting of moist, dense snow. Snow depths at the treeline are estimated to range from 50 to 130 cm.

Weather Summary

Sunday night
Cloudy. 5 to 15 cm of snow. 30 km/h south ridgetop wind. Treeline temperature -3 °C.

Monday
Mostly cloudy. 15 to 30 cm of snow. 60 km/h south ridgetop wind. Treeline temperature -4 °C.

Tuesday
Mostly cloudy. 20 to 30 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -5 °C.

Wednesday
Mix of sun and clouds. 1 to 2 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Use increased caution at all elevations. Storm snow is forming touchy slabs.
  • Minimize exposure during periods of heavy loading from new snow and wind.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.

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.