Environment Canada has upgraded a weather forecast for parts of BC’s south coast to a precipitation warning.
The warning applies to Metro Vancouver, Sunshine Coast and Howe Sound. Fraser Valley, Whistler and eastern, western and central Vancouver Island remain under a special weather declaration.
‘Atmospheric river’ forecast to bring ‘wet and windy’ weekend to BC’s south coast
The National Weather Service predicts that between 75 and 150 millimeters of rain will fall within a 48-hour window starting Friday morning.
The heavy rain is expected to arrive with a pair of front systems filled with moisture from an “atmospheric river” flowing off the Pacific Ocean, according to Environment Canada.
“A ‘river’ of atmospheric moisture is floating high above the Pacific Ocean this morning, and if you aim at BC Pockets of heavy rain will invade the North and Central BC coasts today through tonight, but it’s the South Coast that will experience the heaviest rainfall in the coming days, ”said Global BC meteorologist Mark Madryga.
“From Friday morning to early Sunday, rain will often be heavy, especially in areas closest to the mountains.”
Freezing levels are also expected to rise above 2,500 meters on Saturday, potentially adding snowmelt to precipitation.
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“Swelling of local streams and localized flooding are likely during this time,” the rainfall warning said.
“Heavy rains can cause flooding and waterlogging on roads.”
BC’s south coast called for preparing for a ‘wet and windy’ weekend
Drivers are reminded to slow down and turn on the headlights and look for possible flushes near waterways.
Residents are also reminded to clear any drainage sites on or near their property to prevent flooding.
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