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Tri-Cities could see up to 150 mm of rain fall over a two-day period

Environment Canada has issued a special weather statement for Metro Vancouver's northeast corner with a deluge expected for the weekend.
Dzenan Jauzovic - downtown Coquitlam skytrain rain wet weather fall
Coquitlam and its neighbouring Tri-City communities could see as much as 150 mm of rain accumulate between Oct. 15-17, 2021.

Looks like this weekend will be an inside weekend after all.

Environment Canada is issuing a special weather statement for the Tri-Cities and Metro Vancouver today (Oct. 13) as a downpour or two is predicted to take place between Friday morning (Oct. 15) and Sunday morning (Oct. 17).

The national service says up to 150 mm of rain is expected to accumulate in the 48-hour period as two frontal systems are set to intersect each other along the south coast, "with high water content associated with an atmospheric river flowing from the southwest off the Pacific Ocean." 

According to the city's rain gauge on Burke Mountain, as of 2 p.m. today, Coquitlam has accumulated just over 90 mm of rainfall for the month of October thus far.

That includes 50 mm that fell altogether on Oct. 9.

The last time Coquitlam recorded a triple-figure downpour in a 48-hour period was Sept. 17 and 18 when Mother Nature provided nearly 121 mm of rain.

Meteorologists explain this could bring in a wet, windy weather "event" for Coquitlam, Port Coquitlam and Port Moody — as well as other regions across the entire Lower Mainland.

"High southeasterly winds will also accompany this weather event. As freezing levels rise over 2,000 metres on Saturday (Oct. 16), snow melt will also add to run off. Swelling of local streams and localized flooding are possible during this time."

Environment Canada adds the special statement is likely to upgrade to a warning closer to the weekend due to the current uncertainty of the forecast.

You can view the seven-day forecast in the photo below or by visiting Environment Canada's website.

Environment Canada - Oct. 13, 2021
A rainfall "event" of up to 150 mm in a two-day period is predicted for the Tri-City region for Oct.15-17, 2021. By Environment Canada