Sentinel Fire
198574,595 acresNevada
The Sentinel Fire burned 74,595 acres, about 117 square miles, across Humboldt County. It began on July 7, 1985.
Watch how it happenedSentinel Fire · 1985
How it happened
See how severely each place burned, revealed outward from where it started.
How severely it burned
Burn severity inside the final perimeter, classified from Landsat images taken before and after the fire.
| Severity | Share | Acres |
|---|---|---|
| Highmost vegetation consumed, soils altered | 3.4% | 2,532 |
| Moderatemixed: many trees killed, some survive | 41% | 30,568 |
| Lowsurface fire, most trees survive | 38% | 28,210 |
| Unburned to lowislands inside the perimeter, little change | 6.6% | 4,932 |
| Not mappedcloud, shadow or water in the satellite images | 11% | 8,340 |
3% of the area inside the perimeter burned at high severity, about 2,532 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.
| Humboldt County | NV | 74,645 |
Other large fires in Nevada in 1985
- Amax 1 Fire92,426 acres
- Jungord Fire40,698 acres
- Rock Crk 2 Fire38,423 acres
- Gooseberry Fire29,338 acres
- Doubleh Fire26,834 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.