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Avalanche Forecast

Archived

Mar 30th, 2026–Mar 31st, 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.
Below Treeline
Natural avalanches unlikely.

Regions

Kootenay Boundary, Purcells, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, Ymir, Crawford, Moyie, St. Mary, Kokanee, Retallack, Valhalla.

New surface instabilities cover a stable snowpack.

Watch for snow amounts, wind loading, and daytime warming.

Back off steep terrain if signs of instability are observed.

Confidence

Moderate

  • We are uncertain whether the wind will be enough to form new wind slabs.

Avalanche Summary

Several small loose dry avalanches were reported on Sunday and we suspect a similar trend occurred on Monday.

Going forward, solar radiation will likely continue to trigger loose snow avalanches where new snow is seeing sun for the first time.

Snowpack Summary

Up to 25 cm of new snow has buried a thin melt-freeze crust now found on solar aspects, or otherwise added to 10 to 25 cm of snow, which was affected by moderate winds a few days ago. This formed wind slabs on lee aspects at upper elevations and scoured some windward slopes to the crust below.

The recent snow sits on a crust from early March that is 5 to 20 cm thick in most locations. It may become thinner at upper elevations.

The mid and lower snowpack is well settled and strong in most areas.

Weather Summary

Monday Night
Clear skies. 10 km/h west ridgetop wind. Treeline temperature -8 °C.

Tuesday
Mix of sun and clouds. 10 km/h southwest ridgetop wind. Treeline temperature -5 °C.

Wednesday
Mix of sun and clouds. 3 to 10 cm of snow. 20 km/h south ridgetop wind. Treeline temperature -4 °C.

Thursday
Mostly cloudy. 1 to 5 cm of snow. 20 km/h east ridgetop wind. Treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Limit exposure to steep, sun exposed slopes, especially when the solar radiation is strong.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

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.

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.