032033 Fire

199027,880 acresAlaska

The 032033 Fire burned 27,880 acres, about 44 square miles, across Yukon-Koyukuk Census Area. It began on July 3, 1990.

Watch how it happened

032033 Fire · 1990

How it happened

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

About this replay
IgnitionJuly 3, 1990Historical replay — order not recorded
Final area27,880 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 032033 Fire
Burn severity by class
SeverityShareAcres
Highmost vegetation consumed, soils altered12%3,443
Moderatemixed: many trees killed, some survive39%10,794
Lowsurface fire, most trees survive11%3,012
Unburned to lowislands inside the perimeter, little change2.3%637
Not mappedcloud, shadow or water in the satellite images36%9,993

12% of the area inside the perimeter burned at high severity, about 3,443 acres; 51% 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
Yukon-Koyukuk Census AreaAK27,899

Other large fires in Alaska in 1990

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