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Residents in Washington are preparing for possible flooding as “atmospheric rivers” once again threaten parts of the Northwest, which saw heavy damage from extreme weather earlier this month.

Flood watches have been issued for much of western and north-central Washington for the weekend, and the National Weather Service warned that flooding was possible through Sunday in northwestern Washington.

Heavy rains and rising rivers were also expected over the weekend in the Cascade and Olympic mountains.

“We are expecting rivers to rise, and possible flooding in some locations by early tomorrow morning," Gary Schneider, a meteorologist at the National Weather Service's Seattle office, said Saturday morning. “Right now, there’s no river flooding going on.”

Schneider said that if flooding were to occur, it would likely happen Saturday night or Sunday morning.

Forecasters say an atmospheric river — a huge plume of moisture extending over the Pacific and into the Northwest — could bring up to 3 inches of rain in some areas hit by the recent flooding.

The state is still assessing millions of dollars in damage from the last atmospheric rivers.

In northwest Washington’s Whatcom County, officials said damage costs could reach as high as $50 million.

The last floods closed the U.S.-Canada border in the small city of Sumas and three bridges in Bellingham, with landslides blocking Interstate 5 south of Bellingham. The heavy rain also caused widespread severe flooding and damage to the north, in British Columbia.

This weekend's atmospheric river event should not be as “severe” as the one earlier this month, Schneider said.

“It’s still going to be a pretty decent rain event, but (the flooding earlier this month) was kind of an historic event. So we’re not expecting a repeat of that,” Schneider said.

Meteorologists predict that rain will taper off on Sunday and that Monday should be relatively dry.

Disasters

Weather and Climate News

The Associated Press

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Residents in Washington state are preparing for possible flooding as “atmospheric rivers” once again threaten parts of the Northwest, which saw heavy damage from extreme weather earlier this month. 

Another round of flood watches issued in Pacific Northwest

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