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Avalanche Forecast

Archived

Apr 11th, 2024–Apr 12th, 2024

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

Regions

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

Localized danger may exist on steep slopes with wet snow.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported in the region. Areas just north of the region have reported small wind slab and wet loose avalanches over the past few days.

Looking forward, wet loose avalanches will become more likely as skies clear and the freezing level rises.

Snowpack Summary

10 to 20 cm of dry snow may be found on north-facing slopes. Surfaces will gradually become wet over the next few days with rising freezing levels and sun exposure.

The facet/crust layer that caused large avalanches in March is buried 100 to 180 cm deep and is unlikely to trigger under the current conditions.

Weather Summary

Thursday Night

Cloudy with 1 to 4 cm of snow. 30 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1700 m.

Friday

Cloudy with clearing skies in the afternoon. 15 km/h west ridgetop wind. Treeline temperature +2 °C. Freezing level 2200 m.

Saturday

Sunny. 10 km/h west ridgetop wind. Treeline temperature +6 °C. Freezing level 2700 m.

Sunday

Sunny. 10 km/h west ridgetop wind. Treeline temperature +8 °C. Freezing level 3000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for unstable snow on specific terrain features, especially when the snow is moist or wet.
  • Be careful with wind slabs, especially in steep, unsupported and/or convex terrain features.

Problems

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.