Pinnacle Fire
202135,244 acresArizona
The Pinnacle Fire burned 35,244 acres, about 55 square miles, across Graham County. It began on June 10, 2021.
Watch how it happenedPinnacle Fire · 2021
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 | 3.0% | 1,054 |
| Moderatemixed: many trees killed, some survive | 25% | 8,834 |
| Lowsurface fire, most trees survive | 59% | 20,906 |
| Unburned to lowislands inside the perimeter, little change | 13% | 4,450 |
3% of the area inside the perimeter burned at high severity, about 1,054 acres; 28% 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.
| Graham County | AZ | 35,273 |
Other large fires in Arizona in 2021
- Telegraph Fire187,117 acres
- Mescal Fire79,300 acres
- Rafael Fire75,698 acres
- Backbone Fire41,157 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.