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Avalanche Forecast

Archived

Apr 11th, 2026–Apr 12th, 2026

Alpine
Natural avalanches unlikely, human triggered possible.
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

Kootenay Boundary, Lizard-Flathead, Purcells, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, South Okanagan, Ymir, Akamina, Flathead, Lizard, Crawford, Moyie, St. Mary, Kokanee, Retallack, Valhalla.

Verify conditions as you travel.

Avoid exposure to large, overhanging cornices.

Confidence

Moderate

  • We have a good understanding of the snowpack structure and confidence in the weather forecast.
  • We are uncertain due to a limited number of field observations.

Avalanche Summary

Pinwheeling was observed on Friday, and on Thursday several naturally triggered wet loose avalanches up to size 2.5 were reported on steep, rocky, southerly aspects in the alpine with high temperatures and strong sunshine.

Observations from this region are very limited. Please consider submitting a MIN to let us know what you're seeing out there.

Snowpack Summary

A lack of overnight refreeze and light rain will keep the snow surface moist/wet to mountain top.

The mid and lower snowpack are generally well-settled and strong in most areas, with numerous crusts throughout. Snowpack depth tapers rapidly at lower elevations.

Weather Summary

Saturday Night
Mostly cloudy. 3 to 10 mm of rain. 20 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2400 m.

Sunday
Mostly cloudy. 1 to 3 mm of rain at treeline. 10 km/h southwest ridgetop wind. Treeline temperature 2 °C. Freezing level 2300 m.

Monday
Mix of sun and clouds. 1 to 2 mm of rain at treeline. 10 km/h west ridgetop wind. Treeline temperature 2 °C. Freezing level 2400 m.

Tuesday
Mostly cloudy. 3 to 5 mm of snow or rain at treeline. 40 km/h southwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1900 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Make observations and continually assess conditions as you travel.

Problems

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.