Trinity Ridge Fire
2012141,762 acresIdaho
The Trinity Ridge Fire burned 141,762 acres, about 222 square miles, across 2 counties. It began on August 3, 2012.
Watch how it happenedTrinity Ridge Fire · 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 |
|---|---|---|
| Highmost vegetation consumed, soils altered | 7.0% | 9,984 |
| Moderatemixed: many trees killed, some survive | 31% | 44,221 |
| Lowsurface fire, most trees survive | 45% | 64,487 |
| Unburned to lowislands inside the perimeter, little change | 11% | 15,315 |
| Increased greennessvegetation greener after the fire than before | 0.2% | 260 |
| Not mappedcloud, shadow or water in the satellite images | 5.3% | 7,495 |
7% of the area inside the perimeter burned at high severity, about 9,984 acres; 38% 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.
| Elmore County | ID | 141,733 |
| Boise County | ID | 74 |
Other large fires in Idaho in 2012
- Mustang Complex377,684 acres
- Halstead Fire190,122 acres
- Kinyon Road Fire171,373 acres
- Flat Top 2 Fire102,417 acres
- Cave Canyon Fire84,831 acres
- Cache Creek Fire75,463 acres
- Sheep Fire50,738 acres
- Porcupine Complex48,973 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.