Lloyd Mountain Fire

201933,764 acresAlaska

The Lloyd Mountain Fire burned 33,764 acres, about 53 square miles, across Yukon-Koyukuk Census Area. It began on June 23, 2019.

Watch how it happened

Lloyd Mountain Fire · 2019

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
Detections1,017satellite 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 Lloyd Mountain Fire
Burn severity by class
SeverityShareAcres
Highmost vegetation consumed, soils altered12%4,077
Moderatemixed: many trees killed, some survive50%16,763
Lowsurface fire, most trees survive25%8,387
Unburned to lowislands inside the perimeter, little change9.6%3,227
Not mappedcloud, shadow or water in the satellite images3.9%1,309

12% of the area inside the perimeter burned at high severity, about 4,077 acres; 62% 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 AreaAK33,790

Other large fires in Alaska in 2019

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