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Avalanche Forecast

Archived

Apr 5th, 2026–Apr 6th, 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 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.

Start early and plan to be away from sunny slopes before they heat up.

The danger is likely low in the morning and will rise with daytime warming.

Confidence

High

  • We are confident due to a stable weather pattern.

Avalanche Summary

There have been many small, natural wet loose avalanches over the past three days. As well as a few natural cornice failures.

Snowpack Summary

A new surface crust has likely formed to mountian top on slopes that face the sun, and to around treeline on shaded slopes.

A thick crust is buried 30 to 40 cm deep, which makes triggering unlikely for any weak layers that persist below it in the upper snowpack.

The mid and lower snowpack is strong in most areas. Snowpack depth tapers rapidly at lower elevations.

Weather Summary

Sunday Night
Mostly clear skies. 10 km/h southwest ridgetop wind. Treeline temperature 3 °C. Freezing level 2500 m.

Monday
Mostly sunny. 1 mm of rain at treeline in the late afternoon. 30 km/h southwest ridgetop wind. Treeline temperature 5 °C. Freezing level 2700 m.

Tuesday
Mix of sun and clouds. Up to 5 cm of snow at treeline. 40 km/h west ridgetop wind. Treeline temperature -4 °C. Freezing level falling to 1600 m.

Wednesday
Mostly sunny. 30 km/h northwest ridgetop wind. Treeline temperature -4 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Start your day early and be out of avalanche terrain during the heat of the day.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.

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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.