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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 unlikely, human triggered possible.
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

Sasquatch, Coquihalla, Harrison-Fraser, Manning, Skagit.

Stormy weather continues, creating dangerous avalanche conditions at upper elevations.

Confidence

Moderate

  • We are confident the likelihood of avalanche will increase with the arrival of the forecast weather.
  • Uncertainty is due to the track & intensity of the incoming weather system.

Avalanche Summary

No recent avalanche activity has been reported in the past several days.

Natural avalanche activity remains possible with continued snowfall.

Weather Summary

Sunday night
Cloudy. 20 to 30 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -3 °C.

Monday
Cloudy. 10 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -4 °C.

Tuesday
Mostly cloudy. 10 to 15 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -5 °C.

Wednesday
Mostly cloudy. 1 to 2 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Don't let storm day fever lure you into consequential terrain.
  • Be especially cautious as you transition into wind-affected terrain.
  • Minimize exposure during periods of heavy loading from new snow and wind.

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.