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Avalanche Forecast

Archived

Dec 5th, 2025–Dec 6th, 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 possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.

Regions

North Columbia, South Columbia, Esplanade, Jordan, North Selkirk, West Purcell, Badshot-Battle, Central Selkirk, Goat, Gold, Retallack, Valhalla, Whatshan.

The size and likelihood of triggering an avalanche will increase with incoming weather. Adjust your terrain choices appropriately.

Confidence

High

Avalanche Summary

No recent avalanche activity has been reported at this time. Storm slab reactivity will increase as new snow accumulates throughout the weekend.

Please consider posting a MIN if you are heading out in the backcountry!

Snowpack Summary

By Saturday morning, as much as 30 cm of new snow may have accumulated in the previous 24 hours. This will create a significant new load, with 40 to 60 cm of recent snow now overlying a surface hoar layer in sheltered terrain and a thin sun crust on south-facing slopes, increasing the likelihood of touchy storm slabs.

A supportive melt–freeze crust is found 60 to 90 cm below the surface in the mid-snowpack.

Average treeline snow depths range from 90 to 140 cm, tapering off quickly at lower elevations.

Weather Summary

Friday Night
Cloudy. 5 to 10 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -5 °C. Freezing level 900 m.

Saturday
Cloudy. 5 to 15 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level 1000 m.

Sunday
Mostly cloudy. 10 to 20 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -5 °C. Freezing level 700 m.

Monday
Mostly cloudy. 15 to 25 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Storm slab size and sensitivity to triggering will likely increase through the day.
  • Minimize exposure during periods of heavy loading from new snow and wind.
  • Be careful as you transition into wind-affected 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.