Crazy Mountain Complex (Bluff Creek)

200939,432 acresAlaska

The Crazy Mountain Complex (Bluff Creek) burned 39,432 acres, about 62 square miles, across Yukon-Koyukuk Census Area. It began on July 26, 2009.

Watch how it happened

Crazy Mountain Complex (Bluff Creek) · 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
Detections377satellite 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 Crazy Mountain Complex (Bluff Creek)
Burn severity by class
SeverityShareAcres
Highmost vegetation consumed, soils altered41%16,296
Moderatemixed: many trees killed, some survive32%12,645
Lowsurface fire, most trees survive13%5,169
Unburned to lowislands inside the perimeter, little change7.2%2,824
Increased greennessvegetation greener after the fire than before1.7%686
Not mappedcloud, shadow or water in the satellite images4.6%1,811

41% of the area inside the perimeter burned at high severity, about 16,296 acres; 73% 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 AreaAK39,445

Other large fires in Alaska in 2009

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