South Breaks Fire

201739,230 acresMontana

The South Breaks Fire burned 39,230 acres, about 61 square miles, across Garfield County. It began on July 19, 2017.

Watch how it happened

South Breaks 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
Detections1,272satellite 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 South Breaks Fire
Burn severity by class
SeverityShareAcres
Moderatemixed: many trees killed, some survive32%12,376
Lowsurface fire, most trees survive68%26,662
Unburned to lowislands inside the perimeter, little change0.5%191

No part of the fire was classed as high severity; 32% burned at moderate 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
Garfield CountyMT39,217

Other large fires in Montana in 2017

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