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Avalanche Forecast

Archived

Nov 28th, 2025–Nov 29th, 2025

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

Regions

Kootenay Boundary, Lizard-Flathead, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, Ymir, Akamina, Flathead, Lizard, Crawford, Moyie, Kokanee, Crowsnest South.

Keep the possibility of rider-triggered wind slabs in mind. Steep, open terrain features—such as areas directly lee of ridges and rock outcrops, are the most likely trigger points.

Confidence

Low

Avalanche Summary

On Friday, near Fernie, a few size 1 loose dry avalanches were reported.

On Wednesday, west of Pincher Creek, explosive avalanche control produced a large (size 2) avalanche on a wind loaded northeast aspect in the alpine.

Snowpack Summary

Snowpack observations are limited. Total snowpack depths are roughly 70 to 100 cm at treeline, tapering quickly at lower elevations.

Recent accumulated snow is soft and generally unconsolidated. It is sticking well to the harder crust layers underneath, which make up most of the lower snowpack.

In many areas, especially at treeline and below, there is not enough snow to overcome surface roughness and be above the threshold for avalanches.

Weather Summary

Friday Night

Clear skies. 10 km/h west ridgetop wind. Treeline temperature -10 °C.

Saturday

Mix of sun and cloud. 10 km/h variable ridgetop wind. Treeline temperature -8 °C.

Sunday

Sunny. 10 to 15 km/h north ridgetop wind. Treeline temperature -6 °C.

Monday

Mostly sunny. 10 km/h west ridgetop wind. Treeline temperature -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to isolated wind affected features in the alpine, as well as cross-loaded features at treeline.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Be cautious of buried obstacles, especially below treeline.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.