Pine Ridge Complex
2006103,158 acresMontana
The Pine Ridge Complex burned 103,158 acres, about 161 square miles, across 2 counties. It began on July 16, 2006.
Watch how it happenedPine Ridge Complex · 2006
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 | 15% | 15,041 |
| Moderatemixed: many trees killed, some survive | 54% | 55,699 |
| Lowsurface fire, most trees survive | 23% | 24,060 |
| Unburned to lowislands inside the perimeter, little change | 4.4% | 4,575 |
| Not mappedcloud, shadow or water in the satellite images | 3.7% | 3,776 |
15% of the area inside the perimeter burned at high severity, about 15,041 acres; 69% 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.
| Big Horn County | MT | 69,299 |
| Yellowstone County | MT | 33,774 |
Other large fires in Montana in 2006
- Derby Fire200,876 acres
- Bundy Railroad Fire91,623 acres
- Lost Creek (Black Pulaski Complex) Fire38,561 acres
- Buffalo Creek Fire37,611 acres
- Soda Creek (Black Pulaski Complex) Fire33,777 acres
- Red Eagle Fire32,560 acres
- Horton Fire25,091 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.