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Avalanche Forecast

Archived

Nov 30th, 2022–Dec 1st, 2022

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

Regions

South Okanagan, Shuswap, North Okanagan.

Dangerous avalanche conditions exist. Careful snowpack evaluation, cautious route-finding, and conservative decision-making are essential. Recent snow overlies various layers that could produce slab avalanches on steep terrain features.

Confidence

Low

Avalanche Summary

No new avalanches have been observed or reported in this region.

Potential for skier-trigger avalanches are likely to be found on terrain features that harbor additional snow such as just below ridgetops and on steep wind-loaded slopes.

Snowpack Summary

Early season conditions exist with low snow amounts and crusts found at lower elevations. A deeper and drier snowpack exceeding 1 m is found at treeline and alpine elevations.

Around 65 cm of snow overlies a weak layer that formed mid-November that consists of sugary faceted grains, weak surface hoar crystals in sheltered terrain features, and a hard crust on steep sun-exposed slopes. The lower snowpack presents as well settled.

Weather Summary

Wednesday Night

Cloudy with flurries and 1 to 5 cm, light wind from the northeast, treeline temperatures -10 °C.

Thursday

Cloudy with snowfall, accumulations of 1 to 5 cm, 70 km/h wind from the southwest, treeline temperature -16 °C.

Friday

Clear sky, no forecast precipitation, 10 km/h variable wind, treeline temperature -20 °C.

Saturday

Cloudy with snowfall, accumulations of 5 to 10 cm, 10 to 30 km/h wind from the southeast, treeline temperature rising to -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Loose avalanches may start small but they can grow and push you into dangerous terrain.

Problems

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.

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.