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Archived

Avalanche Forecast

Feb 2nd, 2025–Feb 3rd, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

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

Storm snow amounts are variable. Assess the storm snow depth at the local level. Despite cold temperatures, ski hills triggered storm slabs up to size 1.5 with large triggers on Sunday.

Confidence

Moderate

Avalanche Summary

Both Sunshine and Lake Louise patrol triggered several storm slabs up to size 1.5 with explosives today. Up to 20 cm thick.

Snowpack Summary

10-25 cm of storm snow over the past 72 hours, coupled with winds, have created storm slabs at tree-line and above. The buried layer (Jan 30) is a mix of crust, surface hoar and facets. The snowpack is generally weak, with an old crust and depth hoar at the base.

Weather Summary

Tomorrow will be chilly, with temperatures dropping into the minus 20s. There will be clearing over the course of the day, and moderate winds are expected.

Terrain and Travel Advice

  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.

Avalanche Problems

Storm Slabs

Storm snow and moderate to strong winds have formed storm slabs at tree-line and above. The bond to the old (Jan 30) surface remains uncertain, so assess conditions locally.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Loose Dry

Dry loose avalanches are still possible in steep and gullied terrain (especially during periods of mod/strong wind). Ice climbers in particular should be wary of these sluffs in steep terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 1.5