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Avalanche Forecast

Archived

Jan 6th, 2026–Jan 7th, 2026

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 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.

Regions

Kootenay Boundary, Purcells, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, Ymir, Crawford, Moyie, St. Mary, Kokanee, Retallack, Valhalla.

Stick to conservative terrain. Ongoing snowfall and stormy weather continue to produce reactive storm slabs.

Confidence

Moderate

  • Uncertainty is due to how quickly the snowpack will recover and gain strength.

Avalanche Summary

Widespread natural and human triggered size 1.5 to 2 storm slab avalanches were reported across the region on Monday.

Snowpack Summary

Roughly 10 to 15 cm of new snow has been redistributed by moderate southwest winds in open terrain at upper elevations. This overlies, up to 40 cm of recent snow that buried surface hoar in wind-sheltered terrain and a sun crust on south-facing slopes at treeline and above. At lower elevations, a crust covers surfaces.

Below recent storm snow, another 20-50 cm of settled snow covers the December 24 melt-freeze crust that is thin or absent in alpine terrain but thicker and more widespread at treeline and below.

The mid and lower snowpack is generally well-bonded and consolidated, with multiple crust layers present.

Weather Summary

Tuesday Night
Cloudy. 4 to 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -7 °C.

Wednesday
Mostly cloudy. 1 to 2 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -8 °C.

Thursday
Mostly cloudy. 4 to 5 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Friday
Mostly cloudy. 1 to 4 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -7 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Closely monitor how the new snow is bonding to the crust.
  • Don't let storm day fever lure you into consequential 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.