Climate officers are warning residents in British Columbia’s South Coast area of one other atmospheric river system that would carry storms and elevate flood dangers beginning Saturday.

Surroundings and Local weather Change Canada says the area is predicted to see intervals of heavy rain mixed with melting mountain snow till Wednesday.

It warns there may be an elevated threat of flooding, excessive river ranges and landslides in a zone protecting Vancouver, Squamish and the Sunshine Coast in addition to the Vancouver Island communities of Nanaimo, Port Alberni, Tofino and Campbell River.

Forecasts name for as much as 300 millimetres of rain over 5 days, with the Howe Sound space anticipating as a lot as 250 mm whereas Inland Vancouver Island and elements of the Fraser Valley might obtain 150 mm and 120 mm respectively.

B.C.’s Ministry of Emergency Administration and Local weather Readiness says in a launch that the storms can also carry winds that would trigger energy outages, and the province’s River Forecast Centre is monitoring streamflow carefully.

The centre has positioned all of Vancouver Island, the Howe Sound area, the Sunshine Coast and elements of Metro Vancouver and the Fraser Valley underneath a flood watch, with excessive streamflow advisories extending east into the Fraser Canyon and north into the central coast.

The slender bands of heavy precipitation are often called an atmospheric river, which happen often within the fall and winter in B.C.

One such occasion in November 2021 led to large flooding and mudslides that knocked out main highway and rail corridors all through the province, snarling provide chains and triggering gasoline rationing within the Decrease Mainland.

This report by The Canadian Press was first printed Jan. 25, 2024.


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