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Avalanche Forecast

Archived

Nov 1st, 2025–Nov 2nd, 2025

Alpine
Early Season
Treeline
Early Season
Below Treeline
Below Threshold.
Alpine
Early Season
Treeline
Early Season
Below Treeline
Below Threshold.
Alpine
Early Season
Treeline
Early Season
Below Treeline
Below Threshold.

Regions

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

The fresh snow and wind on Saturday and Sunday will increase the avalanche hazard in steep, loaded gullies and lee areas of the alpine and high treeline. Pay attention to local snow amounts and watch out for deeper accumulations and small wind slabs in these areas.

Confidence

Low

Avalanche Summary

Sluffing in steep gullies with the new snow and wind, and reports of small wind slabs being triggered in steep gullies by skiers.

Snowpack Summary

Saturday saw 10-25 cm of new snow at treeline with more in the alpine and along the divide. Small wind slabs are present in steep, loaded gullies and lee areas of the alpine and high treeline. Most treeline and below treeline areas are still below the threshold for avalanches, but we expect north-facing alpine terrain to have a snowpack of 40-80 cms.

Weather Summary

15-25 cm of new snow on Saturday at treeline with more in the alpine, and another 5-10 cm forecast for Saturday night. Snow should start tapering off on Sunday morning. Temperatures will drop with freezing levels near the valley bottom overnight and into Sunday. Alpine winds will be from the west in the moderate to strong range.

Monday

Banff National Park forecast

Yoho National Park forecast

Kootenay National Park forecast

Western Canada weather maps

Terrain and Travel Advice

  • Avoid terrain traps such as gullies and cliffs where the consequence of any avalanche could be serious.

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.