Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Nov 30th, 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

Avalanche Summary

A few natural small loose dry avalanches and small cornice failures were reported Fri and Sat.

Local ski areas were still able to trigger sluffs and isolated small slabs in steep terrain with explosives and ski cutting. In north-facing thin snowpack areas, a couple of these failures occurred on weak facets near the ground. On steep solar aspects, there were some small failures on the Nov 22 sun crust.

Very limited avalanche activity overall for the past several days.

Snowpack Summary

Isolated small wind slabs are present in the alpine from variable winds over the last week.

25-45 cm of soft storm snow sits over the Nov 22 interface of thin sun crust/spotty surface hoar.

Slightly deeper in the snowpack, the Nov 13 rain crust is present below ~2100-2300 m.

The snowpack is generally supportive and well-bonded for this time of year, but it is beginning to facet and weaken with the cool temperatures.

Treeline snow depths range from 70-125 cm.

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.

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.