Atmospheric river brings localized flooding across Metro Vancouver

5 Dec 2023

Up to 70 mm of rain expected by Tuesday morning

Published Dec 04, 2023  •  Last updated 2 hours ago  •  1 minute read

Atmospheric river - Figure 1
Photo Vancouver Sun
An atmospheric river has brought heavy rain to Vancouver not seen since November, 7, 2021 when this photo was taken. Photo by RICHARD LAM /PNG

More than 50 mm of rain has fallen across Metro Vancouver over the past several hours, with more expected overnight.

At 4 p.m. on Monday, Environment Canada updated its rainfall warning for Metro Vancouver (central, southeast and southwest), Fraser Valley, Whistler and East Vancouver Island predicting total rainfall of between 50 to 70 mm.

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“A potent and impactful storm, an atmospheric river, is over the South Coast and is bringing heavy rain. Very heavy rainfall and rain on snow at higher elevations will increase the risk of flooding and landslides,” the warning read.

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“The rain will ease overnight or early Tuesday morning. Heavy downpours can cause flash floods and water pooling on roads. Localized flooding in low-lying areas is possible. Watch for possible washouts near rivers, creeks and culverts.”

According to posts on social media, there is localized flooding in Vancouver, Burnaby and Surrey.

Textbook Atmospheric River shape. If you see a Pacific Storm look like this, it is an Atmospheric River. This is not a made up term from our media to scare anyone. This is what the meteorogical term is for a Storm like this... #bcstorm pic.twitter.com/6d6NvrKg0I

— Brad Atchison (@Brad604) December 4, 2023

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A lot on the B.C. table this week. Flood and landslide risk exists on the South Coast while a high avalanche danger builds on Vancouver Island and the North Shore Mountains. More than 10 hours of freezing rain is possible in the Interior. #bcstorm #BCwx https://t.co/AMQMepD0AH

— Nathan Howes TWN (@HowesNathan) December 5, 2023

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This is the heaviest rainfall in Metro Vancouver since an atmospheric river starting Nov. 14, 2021, led to widespread flooding and extensive damage.

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