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 happened

Blair Fire · 2011

How it happened

Watch it burn in the order satellites saw it, coloured by how severely each place burned.

About this replay
Date (UTC)—Historical replay
Burned so far—acres
High severity—of the area so far
Detections134satellite fire pixels

How severely it burned

Burn severity inside the final perimeter, classified from Landsat images taken before and after the fire.

Map of burn severity across the Blair Fire
Burn severity by class
SeverityShareAcres
Moderatemixed: many trees killed, some survive20%8,207
Lowsurface fire, most trees survive77%31,009
Unburned to lowislands inside the perimeter, little change2.1%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.

Acres burned by county
Elmore CountyID33,716
Gooding CountyID6,370

Other large fires in Idaho in 2011

Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.