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Avalanche Forecast

Archived

Dec 7th, 2024–Dec 8th, 2024

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

Regions

Kootenay Boundary, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, South Okanagan, Ymir, Shuswap, Crawford, Kokanee, North Okanagan.

Up high, the storm slab problem may still be rider-triggerable. Assess small slopes, before committing to your line.

Rain at lower elevations has made travel difficult.

Confidence

Low

Avalanche Summary

No new avalanches have been reported since Friday.

Snowpack Summary

New snow is falling on a variety of crystals that it may not bond well to. Including surface hoar in open, sheltered terrain, sun crusts, and wind-affected snow. However, rain at the beginning of the storm may have helped the new snow to stick.

Below the new storm snow, the snowpack is well-settled, dense, and generally strong.

Treeline snow depths range from 100 to 150 cm.

Weather Summary

Saturday Night

Cloudy with 5 to 10 cm of snow. 25 to 50 km/h west ridgetop wind. Treeline temperature -7 °C.

Sunday

Mostly cloudy. 20 km/h northwest ridgetop wind. Treeline temperature -7 °C.

Monday

Sunny. 20 to 30 km/h northwest ridgetop wind. Treeline temperature -6 °C.

Tuesday

Sunny. 10 to 20 km/h northwest ridgetop wind. Treeline temperature -4 °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.
  • Use small, low consequence slopes to test the bond of the new snow.
  • Make observations and continually assess conditions as you travel.

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.