YOLO COUNTY (KGO) -- A mandatory evacuation advisory has been issued for two neighborhoods in Yolo County after a large grass fire broke out just north of Vacaville Thursday afternoon.
Los Positas near Highway 128 and Golden Bear Estates residents are asked to start making evacuation plans.
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The 1,600-acre fire, just south of Winters, threw huge plumes of smoke into the sky. They could be seen from miles away. It started just after 12:30 p.m. in a hilly, open area off Highway 128 and Pleasants Valley Road.
That highway to Napa County is closed until noon Friday as firefighters work to put out the flames.
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The fire is now 15 percent contained thanks to air drops throughout the day.
One firefighter lost consciousness Thursday and had to go to the hospital in a helicopter.