The El Dorado Fire was a wildfire that burned 22,744 acres in San Bernardino and Riverside counties of California, United States, from September to November 2020. It was ignited on September 5 by a pyrotechnic device at a gender reveal party in El Dorado Ranch Park and quickly spread to the San Gorgonio Wilderness Area of the San Bernardino National Forest. Burning over a 71-day period, the fire destroyed 20 structures and killed one firefighter, for which the couple hosting the party were charged with involuntary manslaughter.