Hepworth Complex (Hepworth)

200740,304 acresNevada

The Hepworth Complex (Hepworth) burned 40,304 acres, about 63 square miles, across Elko County. It began on July 16, 2007.

Watch how it happened

Hepworth Complex (Hepworth) · 2007

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

Detections63satellite fire pixels

Fire milestones

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

Burning nowAreas reached in the last half day of satellite passes

Boston, to scale48 square miles of land, drawn at the fire’s scale

Timing: NASA FIRMS satellite fire detections (63 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 Hepworth Complex (Hepworth)

Burn severity by class
Severity	Share	Acres
Highmost vegetation consumed, soils altered	2.7%	1,085
Moderatemixed: many trees killed, some survive	32%	12,980
Lowsurface fire, most trees survive	50%	20,072
Unburned to lowislands inside the perimeter, little change	15%	6,166

3% of the area inside the perimeter burned at high severity, about 1,085 acres; 35% 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

Elko County	NV	40,305

Other large fires in Nevada in 2007

Murphy Complex567,212 acres
Winecup Complex (West Fork)159,891 acres
Antelope Complex130,052 acres
Red House Complex65,552 acres
Highway 93 Complex (West Basin)63,158 acres
Murphy Complex (Scott Creek)59,639 acres
Tungsten Fire58,329 acres

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