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Avalanche Forecast

Archived

Jan 24th, 2024–Jan 25th, 2024

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

Regions

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

The recent snow requires more time to stabilize and bond to underlying surfaces.

Choose terrain without terrain traps or overhead hazards.

Confidence

Moderate

Avalanche Summary

On Wednesday a skier remotely triggered a size 2 slab avalanche from 80 metres away on a layer of facets and surface hoar over a crust down 90 cm. Southeast aspect at treeline.

A mix of natural, skier-triggered, and explosive-triggered storm or wind slab avalanches have been reported over the last 5 days. Avalanches were sized 1 to 2, generally all in the upper 40 cm of snow and on various aspects and elevations.

Snowpack Summary

The upper snowpack continues to settle and bond. Moist snow surfaces exist below treeline.

Below the recent snow accumulations, down roughly 30 to 50 cm, is a layer of old wind-affected surfaces and weak faceted grains.

Currently, the mid and lower snowpack is generally well-bonded, featuring a thick crust near its base.

Weather Summary

Wednesday Night

Cloudy with 0 to 8 cm of snow, southwest winds 20 to 30 km/h, treeline temperature -5 °C.

Thursday

Cloudy with a trace of new snow, southwest alpine winds 10 to 30 km/h, treeline temperature -5 °C.

Friday

Cloudy with a trace of new snow, southwest alpine winds 10 to 30 km/h, treeline temperature -6 °C.

Saturday

Cloudy with 5 to 10 cm of snow, southwest alpine winds 10 to 30 km/h, treeline temperature 0 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Make conservative terrain choices and avoid overhead hazard.
  • Avoid steep convex slopes.
  • Be carefull around freshly wind loaded features.

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.