Delphia Fire

201240,412 acresMontana

The Delphia Fire burned 40,412 acres, about 63 square miles, across Musselshell County. It began on August 24, 2012.

Watch how it happened

Delphia Fire · 2012

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
Detections1,087satellite 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 Delphia Fire
Burn severity by class
SeverityShareAcres
Highmost vegetation consumed, soils altered0.4%176
Moderatemixed: many trees killed, some survive7.8%3,162
Lowsurface fire, most trees survive39%15,598
Unburned to lowislands inside the perimeter, little change39%15,711
Increased greennessvegetation greener after the fire than before14%5,765

under 1% of the area inside the perimeter burned at high severity, about 176 acres; 8% 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
Musselshell CountyMT40,396

Other large fires in Montana in 2012

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