More than 2,000 fire personnel are on scene Monday as the Pickett Fire continued to burn in California's Napa County for a fifth day.

Pickett Fire, which began on Aug. 21, has spread to more than 6,800 acres through Napa County, just east of Santa Rosa, as of Aug. 25. The fire is 13% contained, and its cause remains under investigation, according to the California Department of Forestry and Fire Protection (Cal Fire).

The Pickett Fire, which has been burning since Thursday afternoon near Calistoga, prompted new evacuation orders on Saturday morning as the blaze continued to move east and challenge control lines, according to fire officials.