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Avalanche Forecast

Archived

Dec 2nd, 2024–Dec 3rd, 2024

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

Use caution when navigating steep, wind-affected terrain.

Field data is limited; We'd love to see your MIN reports if you are out in the mountains!

Confidence

Moderate

Avalanche Summary

No human-triggered avalanches have been reported in the past week. Explosives have triggered several size 1 to 2 slabs, mostly on south and southwest aspects. Old storm snow is generally well-bonded, except possibly in areas with recent wind loading.

Snowpack Summary

Last week's 40 to 70 cm of snow remains soft in sheltered areas but has been redistributed by wind in exposed terrain.

The snowpack is generally strong, with some buried surface hoar 60 to 80 cm deep and crusts near the ground showing no recent avalanche activity.

Treeline snow depths range from 100 to 150 cm.

Weather Summary

Monday Night

Mainly clear. 10 to 15 km/h southwest ridge top wind. Treeline temperature 0 °C

Tuesday

Mainly clear. 5 to 10 km/h southwest ridge top winds. Treeline temperature 1 °C.

Wednesday

Mainly clear. 10 to 15 km/h southwest ridge top wind. Treeline temperature 1 °C.

Thursday

A mix of sun and cloud. 15 to 25 km/h southwest ridge top wind. Treeline temperature 1 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out sheltered terrain where new snow hasn't been affected by wind.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.