A massive flood crisis continues in the Pacific Northwest as historic river levels threaten thousands. On Friday, 100,000 people in western Washington were under urgent evacuation warnings. Torrential rains swept the region from Oregon through Washington to British Columbia, triggered by an atmospheric river—a strong moisture storm from the Pacific Ocean. Washington Governor Bob Ferguson declared a statewide emergency on Wednesday. The heavy rains caused dangerous mudslides, washed out roads, and submerged vehicles. Western Washington faced the worst impacts, with flood watches in the Cascades, Olympic mountains, and Puget Sound areas. Skagit County north of Seattle saw the bulk of the evacuations. Emergency teams said around 3,800 evacuees need temporary shelter. Helicopter rescues have been carried out in King and Whatcom counties. The worst flooding hit the Skagit, Snohomish, and Puyallup rivers. More than 30 highways and many smaller roads closed. The BNSF Railway, crucial for freight in the area, had several sections damaged or closed due to floods. Rainfall reached 10 to 17 inches in some spots. Rivers are cresting several feet above records and remain high. Although lighter rain was forecast for Friday and Saturday, heavy rain is expected again on Sunday. In British Columbia, five of six highways to Vancouver were closed due to floods, rockfalls, and avalanche risks, threatening key mountain routes. The British Columbia transport ministry said, "This situation is evolving and very dynamic." Experts warn that such storms could grow more frequent and severe with ongoing climate change.