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RegisterNov 29th, 2022–Nov 30th, 2022
Kootenay Boundary, Bonnington, Grohman, Kootenay Pass, Norns, Rossland, South Okanagan, Ymir, Shuswap, North Okanagan, Whatshan.
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.
Over the past week, a few small (size 1) avalanches were reported south of Nelson. There were also reports of whumpfing and cracking suggesting the recent snow is poorly bonded to the mid-November weak layer.
Avalanches on this layer are most likely to be small and found on isolated terrain features, but it will likely become a more serious problem when new snow arrives Tuesday night and Wednesday.
Early season conditions exist with low snow amounts and crusts found at lower elevations and a deeper and drier snowpack approaching 1 m at treeline and alpine elevations.
Around 30 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 remainder of the snowpack is faceted as shown in this MIN, but is likely still intermixed with rocks, brush, and trees.
Wednesday Night
Cloudy with flurries and 1 to 3 cm, 40 km/h wind from the southwest, treeline temperatures -12 °C.
Thursday
Cloudy with snowfall, accumulations of 10 to 15 cm, 70 km/h wind from the southwest, treeline temperatures warm to -9 °C.
ThursdayPartly cloudy, isolated flurries with trace amounts of snow, light wind from the north, treeline temperatures around -15 °C.
FridayClear sky no forecast precipitation, 10 km/h variable wind, treeline temperature -10 to -15 °C.
More details can be found in the Mountain Weather Forecast.