Impassable One Fire
200429,827 acresFlorida
The Impassable One Fire burned 29,827 acres, about 47 square miles, across 2 counties. It began on March 7, 2004.
Watch how it happenedImpassable One Fire · 2004
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 | 65% | 19,486 |
| Unburned to lowislands inside the perimeter, little change | 32% | 9,617 |
| Not mappedcloud, shadow or water in the satellite images | 2.4% | 724 |
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.
| Baker County | FL | 27,286 |
| Columbia County | FL | 2,550 |
Other large fires in Florida in 2004
- East Fork Fire26,306 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.