Big Creek Fire

2009174,888 acresAlaska

The Big Creek Fire burned 174,888 acres, about 273 square miles, across Yukon-Koyukuk Census Area. It began on July 18, 2009.

Watch how it happened

Big Creek Fire · 2009

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
Detections1,253satellite 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 Big Creek Fire
Burn severity by class
SeverityShareAcres
Highmost vegetation consumed, soils altered20%35,048
Moderatemixed: many trees killed, some survive50%87,230
Lowsurface fire, most trees survive16%28,160
Unburned to lowislands inside the perimeter, little change9.7%16,918
Not mappedcloud, shadow or water in the satellite images4.3%7,510

20% of the area inside the perimeter burned at high severity, about 35,048 acres; 70% 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 AreaAK175,021

Other large fires in Alaska in 2009

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