About 100 firefighters were called to put out a two-acre brush fire in a heavily wooded section of Prospect Park in Brooklyn on Friday night, prompting officials to warn residents to stay away as they used drones to identify hot spots.

A 2-acre brush fire broke out in Prospect Park on Friday night amid a lengthy drought and windy conditions that have led to red flag warnings for nearly the entire tri-state area.

The fire was in an “extremely dense” part of Prospect Park on a hill, and there were no structures nearby to be threatened, an FDNY official said.