Unnamed Fire

198625,753 acresColorado

The Unnamed Fire burned 25,753 acres, about 40 square miles, across Pueblo County. It began on March 26, 1986.

Watch how it happened

Unnamed Fire · 1986

How it happened

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

About this replay
IgnitionMarch 26, 1986Historical replay — order not recorded
Final area25,753 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 Unnamed Fire
Burn severity by class
SeverityShareAcres
Moderatemixed: many trees killed, some survive66%16,944
Lowsurface fire, most trees survive34%8,776
Unburned to lowislands inside the perimeter, little change0.1%33

No part of the fire was classed as high severity; 66% 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
Pueblo CountyCO25,770

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