Fog River Fire

201538,994 acresAlaska

The Fog River Fire burned 38,994 acres, about 61 square miles, across Bethel Census Area. It began on June 20, 2015.

Watch how it happened

Fog River Fire · 2015

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
Detections805satellite 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 Fog River Fire
Burn severity by class
SeverityShareAcres
Highmost vegetation consumed, soils altered4.0%1,564
Moderatemixed: many trees killed, some survive34%13,142
Lowsurface fire, most trees survive28%10,934
Unburned to lowislands inside the perimeter, little change6.2%2,411
Increased greennessvegetation greener after the fire than before1.1%431
Not mappedcloud, shadow or water in the satellite images27%10,512

4% of the area inside the perimeter burned at high severity, about 1,564 acres; 38% 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
Bethel Census AreaAK39,019

Other large fires in Alaska in 2015

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