East Fork Fire
2020106,356 acresUtah
The East Fork Fire burned 106,356 acres, about 166 square miles, across Duchesne County. It began on August 21, 2020.
Watch how it happenedEast Fork Fire · 2020
How it happened
Watch it burn in the order satellites saw it, coloured by how severely each place burned.
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 | 23% | 23,985 |
| Moderatemixed: many trees killed, some survive | 21% | 22,173 |
| Lowsurface fire, most trees survive | 26% | 27,300 |
| Unburned to lowislands inside the perimeter, little change | 28% | 30,206 |
| Increased greennessvegetation greener after the fire than before | 0.5% | 549 |
| Not mappedcloud, shadow or water in the satellite images | 2.0% | 2,143 |
23% of the area inside the perimeter burned at high severity, about 23,985 acres; 43% 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.
| Duchesne County | UT | 106,432 |
Other large fires in Utah in 2020
- Canal Fire74,857 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.