Longhorn Complex
201241,436 acresSouth Dakota
The Longhorn Complex burned 41,436 acres, about 65 square miles, across Todd County. It began on July 19, 2012.
Watch how it happenedLonghorn Complex · 2012
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 |
|---|---|---|
| Lowsurface fire, most trees survive | 51% | 21,018 |
| Unburned to lowislands inside the perimeter, little change | 25% | 10,294 |
| Not mappedcloud, shadow or water in the satellite images | 24% | 10,124 |
Most of the area inside the perimeter burned at low severity or not at all.
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.
| Todd County | SD | 41,443 |
Other large fires in South Dakota in 2012
- Wellnitz Fire77,396 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.