Washington state residents are bracing for possible mudslides and levee failures from floodwaters that are expected to be slow to recede.

Drier weather is coming, but flooding effects are likely to continue for days across portions of western Washington state and northwestern Oregon.

Authorities are going door-to-door in South Prairie, Washington, in Pierce County, urging residents to leave their homes immediately as water rises there. The Pierce County Sheriff’s Office previously said that at least 25 people have been rescued in the county since Wednesday, including in South Prairie.

"The only clothes I got is just my pajamas," 7-year-old Jocelyn Rosas told CBS News' Carter Evans, as flooding devastated parts of Washington state.

Washington Gov. Bob Ferguson, who has declared a state of emergency, stressed Thursday that the flooding "is extremely unpredictable" and "potentially historic." "If you have instructions to evacuate from your local authorities, please, please, please evacuate," the governor pleaded.

Flood water is continuing to keep people from their homes and drivers off some major highways in western Washington.

A foot and a half of rain pushed the water levels of at least four rivers in Washington, including the Skagit River, to hit record highs, surpassing some of their previous records set over 35 years ago.