Ross Fork Fire

202240,690 acresIdaho

The Ross Fork Fire burned 40,690 acres, about 64 square miles, across 3 counties. It began on August 14, 2022.

Watch how it happened

Ross Fork Fire · 2022

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
Detections3,485satellite 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 Ross Fork Fire
Burn severity by class
SeverityShareAcres
Highmost vegetation consumed, soils altered13%5,215
Moderatemixed: many trees killed, some survive25%10,050
Lowsurface fire, most trees survive48%19,354
Unburned to lowislands inside the perimeter, little change15%5,915
Increased greennessvegetation greener after the fire than before0.4%156

13% of the area inside the perimeter burned at high severity, about 5,215 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.

Acres burned by county
Blaine CountyID31,546
Camas CountyID8,922
Elmore CountyID220

Other large fires in Idaho in 2022

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