Liberty Fire

201727,752 acresMontana

The Liberty Fire burned 27,752 acres, about 43 square miles, across Missoula County. It began on July 15, 2017.

Watch how it happened

Liberty Fire · 2017

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
Detections4,018satellite 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 Liberty Fire
Burn severity by class
SeverityShareAcres
Highmost vegetation consumed, soils altered27%7,630
Moderatemixed: many trees killed, some survive39%10,846
Lowsurface fire, most trees survive26%7,226
Unburned to lowislands inside the perimeter, little change7.1%1,972
Increased greennessvegetation greener after the fire than before0.3%76

27% of the area inside the perimeter burned at high severity, about 7,630 acres; 67% 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
Missoula CountyMT27,731

Other large fires in Montana in 2017

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