34 Complex
201857,492 acresOklahoma
The 34 Complex burned 57,492 acres, about 90 square miles, across 2 counties. It began on April 12, 2018.
Watch how it happened34 Complex · 2018
How it happened
Watch it burn in the order satellites saw it, coloured by how severely each place burned.
How severely it burned
Burn severity inside the final perimeter, classified from Landsat images taken before and after the fire.

| Severity | Share | Acres |
|---|---|---|
| Highmost vegetation consumed, soils altered | 1.2% | 709 |
| Moderatemixed: many trees killed, some survive | 24% | 13,811 |
| Lowsurface fire, most trees survive | 62% | 35,477 |
| Unburned to lowislands inside the perimeter, little change | 13% | 7,492 |
1% of the area inside the perimeter burned at high severity, about 709 acres; 25% burned at moderate or high severity.
Monitoring Trends in Burn Severity (U.S. Geological Survey and USDA Forest Service). Classes come from the change in a Landsat burn index (dNBR) between images before and after the fire; acres are each class’s share of the fire’s mapped area.
Where it burned
Acres inside each county, measured from the satellite-mapped perimeter.
| Woodward County | OK | 50,484 |
| Harper County | OK | 7,048 |
Other large fires in Oklahoma in 2018
- Rhea Fire277,724 acres
- Drumb Fire30,430 acres
- Stateline Fire28,533 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.