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Avalanche Forecast

Archived

Feb 1st, 2026–Feb 2nd, 2026

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

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

The green brick is over and Saturday was the tipping point. After long periods of Low danger, even small amounts of new snow can combine with wind & warm temperatures to produce avalanches. It's crucial to verify the avalanche forecast by comparing what you read with what you actually observe in the mountains, and adjust accordingly.

Confidence

Avalanche Summary

No new avalanches reported on Sunday, but...

The MIN lit up late Saturday evening as people returned from their trips and reported multiple avalanche involvements up to size 2, all running 10-25 cm deep on the surface hoar/crust layer.

Mt Field, Boom Lake, Mt Whymper and the Tophat area all saw action.

Snowpack Summary

10-20 cm of snow from late last week now covers up and bonds poorly to the Jan 24 weak layer. This layer is becoming a Problem as an overlying slab develops from the new snow, wind and warm temperatures. This is the perfect recipe for avalanches, and expect them to be very sensitive, given the nature of the underlying surface hoar and crust.

Weather Summary

Warm and windy. A westerly flow will continue to push warm air over the region this week, initially with some light precipitation, then drying out and warming up even further by midweek. Expect a few cm of snow by Monday (up to 5 cm on the Wapta), and then watch the freezing levels rise each day, reaching 3000 m on Friday. The winds are expected to remain in the moderate-to-strong range for most of the week.

Terrain and Travel Advice

  • Closely monitor how the new snow is bonding to the old surface.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.