(CNN) — Rain has finally come to an end in flooded Washington and the Pacific Northwest, but the region can’t breathe easy: More heavy rain from new atmospheric rivers will arrive next week.

Rivers are dangerously swollen after a dayslong deluge from a powerful atmospheric river triggered historic flooding , tens of thousands of evacuations and dozens of water rescues.

Floodwater was waist deep in many places, but more than 15 feet deep in the hardest-hit areas like Sumas, Washington, where the Coast Guard rescued dozens . Some people were rescued from rapidly rising floodwater by helicopter while others were taken to safety by boat from their homes or atop cars .

“The situation is truly historic. Rivers like the Skagit River and Cedar Rivers literally exp

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