Firefighters in Napa County, California have been working around the clock for days to contain a wildfire that continues to grow. The Pickett Fire, as it is known, grew to 3,993 acres overnight on Friday.

The Pickett Fire in California's Napa County grew Friday afternoon near Calistoga, reaching more than 3,000 acres, the largest fire in the Bay Area since last year.

A fire burning near Silverado Trail wineries prompted evacuation orders in Napa County. The Pickett Fire was reported around 3 p.m. on Thursday, Aug. 21, off Pickett Road, near Calistoga. By Friday afternoon, it had burned 3,235 acres (5 square miles) with 5% containment, the California Department of Forestry and Fire Protection said.