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Avalanche Forecast

Archived

Jan 24th, 2026–Jan 25th, 2026

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, Banff, East Side 93N, LLSA.

In this region, triggering the deep basal weak layer is unlikely but not impossible. Uncertainty is limited to steep alpine terrain with a thin to thick snowpack.

Confidence

Moderate

  • We are uncertain about how quickly deep persistent slabs are gaining strength.

Avalanche Summary

No new avalanches observed or reported in this region on Saturday.

An example of isolated terrain where the layer could be triggered is a skiier triggered size 2 in the Lake Louise backcountry last Tuesday. It was a reloaded bed surface from a previous avalanche and a steep, cross-loaded, thin snowpack alpine slope.

Snowpack Summary

Extensive wind effect exists in the alpine, with some surface faceting helping to break down crusts and create softer skiing. In protected treeline and below-treeline terrain, widespread surface hoar was buried by a few centimetres on Saturday. A deeper surface hoar layer lies 50–60 cm down, but there have been no recent avalanches. Basal crust and/or facets exist in thin snowpack areas, but overall, this year's deeper snowpack is stronger than usual.

Weather Summary

On Sunday, there will be no new snow, light to moderate Westerly alpine winds, and treeline temperatures staying at -12C as a high.

Slightly warmer temperatures for Monday and Tuesday. There is no major snow forecast in the short term.

Click here for an Alberta Rockies weather forecast made by Environment Canada

Terrain and Travel Advice

  • Avoid shallow, rocky areas where the snowpack transitions from thick to thin.

Problems

Deep Persistent Slabs

Deep Persistent Slab avalanches are the release of a thick cohesive layer of hard snow (a slab), when the bond breaks between the slab and an underlying persistent weak layer deep in the snowpack. The most common persistent weak layers involved in deep, persistent slabs are depth hoar or facets surrounding a deeply buried crust. Deep Persistent Slabs are typically hard to trigger, are very destructive and dangerous due to the large mass of snow involved, and can persist for months once developed. They are often triggered from areas where the snow is shallow and weak, and are particularly difficult to forecast for and manage.