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We’re stuck in a very wet pattern along the West Coast as a stubborn atmospheric river lingers over the region into the beginning of the week.
This Pineapple Express event will continue to fuel rounds of heavy rainfall across Vancouver Island and the South Coast over the next couple of days.
A risk for flooding will continue as heavy rain and snowmelt occur across the region. There’s also a high risk for avalanches as freezing levels rise.
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Downpours that began this weekend will continue into the beginning of the workweek as a steady stream of tropical moisture funnels into the coast.
Initial rainfall reports from the first round trickled in on Sunday. Parts of Metro Vancouver saw more than 50 mm of rain. Vancouver Airport saw about 40 mm of rain, making for its wettest January day since Jan. 3, 2019.
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The hazard with this setup is that the atmospheric river isn’t really moving anywhere. It’ll remain in place and fuel heavy rain across southwestern B.C. through early Tuesday before the ribbon of moisture begins slumping southeast.
High freezing levels are concerning. This deep reserve of mild, tropical air is bad news for ski resorts along the North Shore and Vancouver Island, where freezing levels will jump higher than 2500 m through the middle of the week.
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Widespread flood watches and high streamflow advisories are in effect across southwestern B.C., with a flood warning issued on Sunday for the Sumas River in the Lower Fraser Valley.
UPGRADE: #BC River Forecast Centre has upgraded to Flood Warning for Sumas River. River levels have exceeded or will exceed the river bank soon. Stay clear of flood water. More info: https://t.co/kTpELSFANC #BCFlood pic.twitter.com/Ct4Ns6grJz
UPGRADE: Emergency Info BC on Twitter: “UPGRADE: #BC River Forecast Centre has upgraded to Flood Warning for Sumas River. River levels have exceeded or will exceed the river bank soon. Stay clear of flood water. More info: https://t.co/kTpELSFANC #BCFlood pic.twitter.com/Ct4Ns6grJz / Twitter” River Forecast Centre has upgraded to Flood Warning for Sumas River. River levels have exceeded or will exceed the river bank soon. Stay clear of flood water. More info: Emergency Info BC on Twitter: “UPGRADE: #BC River Forecast Centre has upgraded to Flood Warning for Sumas River. River levels have exceeded or will exceed the river bank soon. Stay clear of flood water. More info: https://t.co/kTpELSFANC #BCFlood pic.twitter.com/Ct4Ns6grJz / Twitter”Emergency Info BC on Twitter: “UPGRADE: #BC River Forecast Centre has upgraded to Flood Warning for Sumas River. River levels have exceeded or will exceed the river bank soon. Stay clear of flood water. More info: https://t.co/kTpELSFANC #BCFlood pic.twitter.com/Ct4Ns6grJz / Twitter”Emergency Info BC on Twitter: “UPGRADE: #BC River Forecast Centre has upgraded to Flood Warning for Sumas River. River levels have exceeded or will exceed the river bank soon. Stay clear of flood water. More info: https://t.co/kTpELSFANC #BCFlood pic.twitter.com/Ct4Ns6grJz / Twitter”
— Emergency Info BC (@EmergencyInfoBC) Emergency Info BC on Twitter: “UPGRADE: #BC River Forecast Centre has upgraded to Flood Warning for Sumas River. River levels have exceeded or will exceed the river bank soon. Stay clear of flood water. More info: https://t.co/kTpELSFANC #BCFlood pic.twitter.com/Ct4Ns6grJz / Twitter”
Remain mindful of the risk for flooding around vulnerable low-lying areas, and avoid driving across flooded roadways if you come across high water. It’s impossible to tell how deep the water is until it’s too late, and the road may have been washed out beneath the water.
The strong and mild southwest flow mean temperatures on Monday will be in the low teens across southern Vancouver Island and Metro Vancouver, up to 10 degrees above seasonal. A couple of stations may record temperatures as warm at 15 or 16°C –– making it one of the warmest January days on record across Metro Vancouver.
Record-breaking temperatures are forecast to remain in place Tuesday.
Header image courtesy of M.D. Silverbrooke in North Vancouver, B.C.
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Credit belongs to : ca.news.yahoo.com
