Ro Fire

199225,605 acresIdaho

The Ro Fire burned 25,605 acres, about 40 square miles, across Blaine County. It began on August 2, 1992.

Watch how it happened

Ro Fire · 1992

How it happened

See how severely each place burned, revealed outward from where it started.

About this replay
IgnitionAugust 2, 1992Historical replay — order not recorded
Final area25,605 ac
Revealed—
Counties1

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 Ro Fire
Burn severity by class
SeverityShareAcres
Highmost vegetation consumed, soils altered4.4%1,135
Moderatemixed: many trees killed, some survive30%7,676
Lowsurface fire, most trees survive41%10,594
Unburned to lowislands inside the perimeter, little change23%5,988
Increased greennessvegetation greener after the fire than before0.5%135
Not mappedcloud, shadow or water in the satellite images0.3%76

4% of the area inside the perimeter burned at high severity, about 1,135 acres; 34% 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 CountyID25,595

Other large fires in Idaho in 1992

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