Long Lake Fire

201527,655 acresAlaska

The Long Lake Fire burned 27,655 acres, about 43 square miles, across Southeast Fairbanks Census Area. It began on June 21, 2015.

Watch how it happened

Long Lake 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
Detections532satellite 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 Long Lake Fire
Burn severity by class
SeverityShareAcres
Highmost vegetation consumed, soils altered30%8,252
Moderatemixed: many trees killed, some survive28%7,758
Lowsurface fire, most trees survive28%7,623
Unburned to lowislands inside the perimeter, little change6.5%1,788
Increased greennessvegetation greener after the fire than before0.4%123
Not mappedcloud, shadow or water in the satellite images7.6%2,111

30% of the area inside the perimeter burned at high severity, about 8,252 acres; 58% 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
Southeast Fairbanks Census AreaAK27,670

Other large fires in Alaska in 2015

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