State Fire

201330,992 acresIdaho and Utah

The State Fire burned 30,992 acres, about 48 square miles, across 2 counties. It began on August 8, 2013.

Watch how it happened

State Fire · 2013

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

Detections887satellite fire pixels

Fire milestones

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

Burning nowAreas reached in the last half day of satellite passes

Manhattan, to scale23 square miles of land, drawn at the fire’s scale

Timing: NASA FIRMS satellite fire detections (710 VIIRS and 177 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 State Fire

Burn severity by class
Severity	Share	Acres
Highmost vegetation consumed, soils altered	6.3%	1,968
Moderatemixed: many trees killed, some survive	33%	10,336
Lowsurface fire, most trees survive	45%	14,009
Unburned to lowislands inside the perimeter, little change	13%	3,885
Increased greennessvegetation greener after the fire than before	0.3%	107
Not mappedcloud, shadow or water in the satellite images	2.2%	687

6% of the area inside the perimeter burned at high severity, about 1,968 acres; 40% 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

Oneida County	ID	20,766
Box Elder County	UT	10,244

Other large fires in Idaho and Utah in 2013

Pony Complex148,112 acres
Elk Complex129,508 acres
Beaver Creek Fire111,308 acres
Gold Pan Complex43,216 acres
Patch Springs Fire29,557 acres
Little Queens Fire27,541 acres

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