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Avalanche Forecast

Archived

Nov 27th, 2025–Nov 28th, 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.

Cool temperatures and light winds have made for favourable riding conditions. Watch for isolated wind slabs as you transition into steeper alpine terrain.

Confidence

High

Avalanche Summary

No avalanches observed or reported. today. On Wednesday Lake Louise ski hill reported explosive triggered wind slabs in the size 1-1.5 range out of steep alpine terrain.

Snowpack Summary

20-40 cm of storm snow from last weekend is settling and bonding. Isolated thin wind-slabs exist in high alpine lee aspects. Below ~2300 m a rain crust exists below the storm snow but no avalanche activity has been observed on this layer. The mid and lower snowpack is well settled for this time of year making for easy travel conditions. Tree-line snow depths range from 70-100cm.

Weather Summary

A ridge of high pressure builds over the area on Friday and becomes firmly established through the weekend. On Friday winds will be light from the northwest, and valley bottom temperatures will cool to mid-day highs of -10 to -14.

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.