Firefighters Battle River Fire in Northern California

Some 6,600 residents in Placer and Nevada counties in Northern California were under evacuation orders on Thursday, August 5, a day after the River Fire broke out in the area.

According to authorities, the fire, which sparked in a forested area east of Yuba City, had grown to 2,400 acres (about four square miles) by Thursday morning.

This footage, released by Placer County, shows firefighting efforts in the area. Credit: Placer County via Storyful