Avalanche Forecast

Archived

Nov 29th, 2025–Nov 30th, 2025

Alpine

Natural avalanches unlikely.

Treeline

Natural avalanches unlikely.

Below Treeline

Natural avalanches unlikely.

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.

Regions

Banff Yoho Kootenay, Little Yoho, Banff, East Side 93N, Kootenay, Lake Louise, LLSA, Sunshine, West Side 93N, Field.

Good travel and skiing up high, with early-season hazards at lower elevations.

The storm snow from last weekend is still largely in good shape following light winds most of the week, but watch for isolated wind slabs in steep alpine terrain.

Increasing alpine winds may move enough snow to bump the hazard on Monday.

Confidence

High

Weather Summary

The ridge of high pressure will hold through Sunday with mainly sunny skies.

Alpine winds will be light to moderate from the NW, gradually increasing late in the day as clouds arrive.

Daytime temperatures at treeline will be between -8°C and -12°C.

Monday will bring stronger NW winds, more cloud and a chance of light flurries.

Click here for Environment Canada links to weather tables for the region.

Terrain and Travel Advice

Be careful as you transition into wind-affected terrain.

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.