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Avalanche Forecast

Archived

Apr 14th, 2024–Apr 15th, 2024

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
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, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, Ymir, Crawford, Moyie, St. Mary, Kokanee.

The freezing level is forecast to drop a bit Monday, yet the sun will still be out. Thin wet loose avalanches are the main concern on steep slopes facing the sun.

Confidence

Moderate

Avalanche Summary

Numerous size 1-1.5 wet loose avalanches were reported on Saturday and Sunday. They were primarily running on slopes facing the sun. Expect wet loose avalanches to continue Monday as the sky clears and the freezing level rises to mountain top.

Snowpack Summary

Expect surfaces to melt and weaken as the freezing level climbs to 2300 m on Monday. This will occur more rapidly on sun-exposed slopes.

The upper snowpack consists of various melt-freeze layers and the lower snowpack is strong and bonded.

Weather Summary

Sunday Night

Mostly clear. 10-20 km/h southwest ridgetop wind. Treeline temperature 1 °C. Freezing level 2300 m.

Monday

Mix of sun and cloud. 15-30 km/h west ridgetop wind. Treeline temperature 5 °C. Freezing level 2300 m.

Tuesday

Mainly cloudy with isolated flurries. 20-30 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1500 m.

Wednesday

Mainly cloudy. 10-25 km/h northwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1700 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.
  • Minimize your exposure time below cornices.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

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.