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RegisterMar 21st, 2021–Mar 22nd, 2021
Kootenay Boundary.
Heightened avalanche conditions may exist on steep open slopes that have been loaded by the wind.
Convective flurries will bring 10-30 cm across the region by Monday afternoon.
SUNDAY NIGHT: Steady flurries with 5-15 cm of new snow, 40-50 km/h southwest wind, treeline temperatures drop to -7 C.
MONDAY: Scattered flurries with 5-10 cm of snow across most of the region and some localized heavier flurries, 30-40 km/h northwest wind, treeline temperatures around -6 C.
TUESDAY: Sunny, light west wind, treeline temperatures around -5 C.
WEDNESDAY: Cloudy with light flurries and up to 5 cm of new snow, 30-40 km/h southwest wind, treeline temperatures around -4 C.
Avalanche activity over the past week has been limited to small dry loose sluffs and small wet loose avalanches on sun-exposed slopes. On Monday there could be sufficient snow to form wind slabs on some steep open slopes.
A cold front crossing the region will bring 10-15 cm of new snow across the region, with some localized flurries bringing up to 30 cm. This adds to about 10 cm of snow from the past few days which sits above a widespread melt-freeze crust, with the exception of high elevation northerly aspects where the snow sits above a small surface hoar layer. Deeper in the snowpack, a persistent weak layer from late January is buried around 80 to 150 cm and is composed of a combination of surface hoar, facets, and crusts. We haven't received a report of avalanche activity on this layer since late February and the likelihood of triggering this layer is low.