There were nine fires in Yellowstone in 2020. Six were lightning caused, while three were human caused. The largest fire in the park during 2020, was the Lone Star Fire at 4,118 acres.
There were nine fires in Yellowstone in 2019. Seven were lightning caused, while one was human caused. The largest fire in the park during 2019, was the Brimstone Fire at 217 acres.
There were eight fires in Yellowstone in 2018. Seven were lightning caused, while one was the result of an escaped campfire. The largest fire in the park during 2018, the Bacon Rind, started in the Custer Gallatin National Forest, and burned into Yellowstone.
The 2017 fire season had eight fires in Yellowstone with less than one acre burned. Six were the result of human activity and the other two were lightning caused.
During the 2016 fire season, 22 fires burned more than 70,284 acres (28,442 hectares) in Yellowstone. Seven were the result of human activity such as a campfire, vehicle operation, or cigarettes. The rest were naturally caused by lightning. Eleven fires were suppressed because values were threatened. Many fires were managed to allow them to perform their natural role in the ecosystem. The largest of these fires, the Maple fire, burned over 51,555 acres.
Last updated: July 1, 2021