Blair Fire
201140,079 acresIdaho
The Blair Fire burned 40,079 acres, about 63 square miles, across 2 counties. It began on August 15, 2011.
Watch how it happenedBlair Fire · 2011
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 |
|---|---|---|
| Moderatemixed: many trees killed, some survive | 20% | 8,207 |
| Lowsurface fire, most trees survive | 77% | 31,009 |
| Unburned to lowislands inside the perimeter, little change | 2.1% | 859 |
No part of the fire was classed as high severity; 20% burned at moderate 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 | 33,716 |
| Gooding County | ID | 6,370 |
Other large fires in Idaho in 2011
- Big Hill Fire65,387 acres
- T17 Fire45,618 acres
- Saddle Complex30,887 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.