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Avalanche Forecast

Archived

Nov 26th, 2025–Nov 27th, 2025

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.
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.

Winds have remained light, temperatures have remained cool, and the snow has remained soft. It's almost a miracle. The weather forecast indicates this pattern will continue through Friday, with a slight refresh on Thursday night. Enjoy the good conditions and keep those MIN reports coming; we read and appreciate them all.

Confidence

Moderate

Avalanche Summary

A few small natural avalanches up to size 1 were observed on Tuesday, and again on Wednesday - all in extreme terrain.

Snowpack Summary

20-40 cms of light snow is bonding well to the layers below. Some very thin, isolated windslabs have formed at high elevations, but the snow is still soft. The lower snowpack is well-settled with no significant weak layers; however, a rain crust exists below ~2300 m, but no avalanches have been observed running on it. Overall, early-season travel and snowpack conditions are favourable, with treeline snow depths ranging from 70 to 100 cm.

Weather Summary

A weak trough crosses through the area on Thursday, creating mostly cloudy skies and light winds, but Thursday evening could see up to 5 cm of snow in some areas. In the wake of this system on Friday morning, the wind abruptly switches to the NE as colder air and a ridge of high pressure create cooler temps and clear skies for Saturday.

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

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.