Antelope Fire

2021141,890 acresCalifornia

The Antelope Fire burned 141,890 acres, about 222 square miles, across Siskiyou County. It began on August 1, 2021.

Watch how it happened

Antelope Fire · 2021

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

Detections8,053satellite fire pixels

Fire milestones

Burn severityHigh, Moderate, Low, Unburned to low, Increased greenness

Burning nowAreas reached in the last half day of satellite passes

Washington, D.C., to scale61 square miles of land, drawn at the fire’s scale

Timing: NASA FIRMS satellite fire detections (6,619 VIIRS and 1,434 MODIS) inside the final perimeter; each place takes the time of its nearest detection, so the order is satellite-observed but interpolated between passes, roughly every 12 hours. Severity: Monitoring Trends in Burn Severity (USGS, U.S. Forest Service), mapped from Landsat after the fire.

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 Antelope Fire

Burn severity by class
Severity	Share	Acres
Highmost vegetation consumed, soils altered	22%	30,960
Moderatemixed: many trees killed, some survive	22%	31,548
Lowsurface fire, most trees survive	30%	42,827
Unburned to lowislands inside the perimeter, little change	26%	36,367
Increased greennessvegetation greener after the fire than before	0.1%	187

22% of the area inside the perimeter burned at high severity, about 30,960 acres; 44% 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

Siskiyou County	CA	141,966

Other large fires in California in 2021

Dixie Fire979,722 acres
Caldor Fire226,739 acres
Monument Fire225,973 acres
Haypress Fire204,379 acres
Mcfarland Fire121,476 acres
Sugar Fire108,479 acres
Windy Fire97,802 acres
Mccash Fire95,698 acres

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