Portions of western Washington state have experienced a month’s worth of rain within the past few days, causing historic flooding, damaging mudslides and more than 100,00 people facing potential evacuations.

The urgency went up a notch in Mount Vernon Thursday night, amidst concerns about whether the levees and dikes will be able to hold a record crest.

Six rivers around Western Washington could see record flooding this week, as a second round of an intense storm rolls in from the Pacific.

The Skagit River crested at 41.1 feet in Concrete early Thursday and 37.73 feet in Mount Vernon early Friday, flooding communities throughout the valley.

Due to the severe flooding in several areas throughout western Washington, thousands of households are without power.

The floodwall in Mount Vernon is expected to be overtopped as the river swells. Authorities have told everyone within the river's 100-year floodplain to evacuate.

Severe flooding in western Washington state hit communities along the Skagit River, leading to mass evacuations assisted by National Guard troops. Levees were tested as rain levels reached historic highs.

Meteorologist Scott Sistek said some rivers are approaching their worst-ever levels, with 12 waterways reaching "major" flood stage across the region.

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.