The Okanogan County Sheriff's Office is telling people to stay indoors as north-central Washington was hit hard by heavy rain, flash floods and mud slides, damaging some homes, blocking portions of three highways and stranding some motorists.
There were no immediate reports of injuries Thursday night.
Okanogan County Sheriff Frank Rogers says he heard "a couple" of homes along State Highway 153 near Twisp were damaged. Deputies were trying to reach the residences.
Washington State Patrol Trooper Darren Wright says five to 12 vehicles were marooned on Highway 153 by mud and slides. He said troopers and sheriff's deputies were working late Thursday night to get the people out and leave the cars for the moment.
The state Transportation Department says mud and debris prompted the closure of an eight-mile stretch of Highway 153 and a 25-mile section of State Highway 20 in Okanogan County. Wright says mud and water also blocked U.S. Highway 97 south of Chelan in Douglas County.
More than an inch of rain was reported in one hour near Twisp in an area burned by the massive Carlton Complex wildfire.
At least 500 people are still assigned to wildfires in the area, including the Carlton Complex. All personnel are accounted for and been given options for dry places to sleep.