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Avalanche Forecast

Archived

Feb 21st, 2026–Feb 22nd, 2026

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

Regions

Kootenay Boundary, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, Ymir, Kokanee, Valhalla, Whatshan.

Choose low-angle slopes without terrain traps to gather information in your area before increasing your exposure.

A weak layer exists and may be triggered by riders.

Confidence

Moderate

  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

Snowpack Summary

Anywhere from 20 to 50 cm of new snow fell in the last week, which overlies a weak layer of surface hoar in sheltered areas and a crust on solar aspects.

Below this are two other layers of concern:

  • February 7th surface hoar and crust buried 50 to 60 cm deep.

  • January 26th surface hoar, crust, and facet layer buried 60 to 80 cm deep.

These layers will likely continue to produce avalanches in the coming days.

The mid and lower snowpack are well settled.

Weather Summary

Saturday Night
Partly cloudy. 30 km/h south ridgetop wind. Treeline temperature -5 °C.

Sunday
Mix of sun and clouds. 2 cm of snow. 40 km/h south ridgetop wind. Treeline temperature -4 °C.

Monday
Mostly cloudy. 10 to 15 cm of snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -4 °C.

Tuesday
Mix of sun and clouds. 1 to 2 cm of snow. 20 km/h west ridgetop wind. Treeline temperature -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.

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.

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.