NAPA COUNTY – Crews on Tuesday afternoon were fighting a fire northeast of Napa, authorities said.

The blaze was reported at 3:35 p.m. on Old Soda Springs Road, according to the California Department of Forestry and Fire Protection. As of 9 p.m., it was 570 acres and 5 percent contained.

Cal Fire said the fire was threatening 50 structures. Evacuations have been ordered in the area.

The cause of the fire is under investigation.

Check back for updates.

Source: www.mercurynews.com