Updated, 7:15 p.m. Wednesday:
The fire is up to about 550 acres. It's burning 1.5 miles west of Highway 17 and south of Highway 172.
MANSFIELD — An approximately 100-acre grass fire has been reported west of Road P Northeast and north of Road 9 Northeast.
The fire is moving north, but isn't threatening any structures. No roads are closed.
Douglas County Fire Districts 3 and 5 and Chelan County Fire District 7 are on scene.