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Avalanche Forecast

Archived

Dec 13th, 2025–Dec 14th, 2025

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
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.

Regions

Kootenay Boundary, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, Ymir, Crawford, Kokanee.

Rider-triggered avalanches will be possible as snow accumulates atop a widespread crust, or in areas where the crust is thin, weak, or absent.

Confidence

Moderate

Avalanche Summary

No recent avalanche activity has been reported since the warm and wet storm earlier this week.

If you've been out in the backcountry, please consider sharing your observations on the MIN.

Snowpack Summary

Up to 10 cm of snow in places has buried a widespread melt–freeze crust that varies in thickness and strength with elevation. Beneath this crust, the snow remains moist due to the recent warm and wet weather. Some alpine areas or regions that received less rain may remain crust-free.

A mid-November crust, with facets or surface hoar above it, is now buried 50 to 100 cm deep.

The lower snowpack is generally well settled and bonded.

Snowpack depth at treeline ranges from roughly 90 to 160 cm, but decreases quickly at lower elevations, leaving many below-treeline slopes without sufficient snow coverage to produce avalanches.

Weather Summary

Saturday Night
Mostly cloudy. 40 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1900 m.

Sunday
Cloudy. 1 to 2 cm of snow at treeline. 40 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1700 m.

Monday
Cloudy. 20 to 30 mm of precipitation as snow or rain at treeline. 60 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2200 m.

Tuesday
Cloudy. 10 to 20 cm of snow at treeline. 50 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • A hard crust on the snow surface will help strengthen the snowpack, but may cause tough travel conditions.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Keep your guard up as storm slabs may remain sensitive to human triggering.

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.