"The flooding levels we're looking at are potentially historic in nature," Gov. Bob Ferguson said Thursday afternoon, urging people to listen to official advice and follow evacuation orders.

Flood alerts are in effect across the Pacific Northwest as a second wave of heavy rain from an atmospheric river pushes into the region. Western Washington is already experiencing major river flooding,

A blast of arctic air swept south from Canada and spread into parts of the northern U.S., while residents of the Pacific Northwest braced for possible mudslides and levee failures from floodwaters

Record river flooding is ongoing in parts of Washington State, but following a drier weekend, a new worry for wetter weather will arise early in the week ahead.

Back-to-back storms have hit the Pacific Northwest, prompting the governor of Washington to declare a state of emergency. Flooding and mudslides have also hit Oregon, and the weather is e3xpected to stay the same for the rest of the week.

On Tuesday, Dec. 9, Washington and Oregon saw heavy rain that impacted local waterways, according to the National Weather Service in Seattle.

Meanwhile, residents of the Pacific Northwest braced for possible mudslides and levee failures as floodwaters slowly recede.

An arctic air blast swept south from Canada, spreading into the northern United States. Meanwhile residents of the Pacific Northwest braced for possible mudslides and levee failures as floodwaters slowly recede.

Back-to-back atmospheric rivers have doused the Pacific Northwest as of late, resulting in flash flooding, damaging mudslides and swollen rivers. Some locations have already picked up over a months' worth of rainfall within just a few days amid the active pattern.