Willow Fire
2004118,413 acresArizona
The Willow Fire burned 118,413 acres, about 185 square miles, across 3 counties. It began on June 24, 2004.
Watch how it happenedWillow Fire · 2004
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 | 2.0% | 2,319 |
| Moderatemixed: many trees killed, some survive | 29% | 34,307 |
| Lowsurface fire, most trees survive | 52% | 61,611 |
| Unburned to lowislands inside the perimeter, little change | 17% | 20,124 |
2% of the area inside the perimeter burned at high severity, about 2,319 acres; 31% 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.
| Gila County | AZ | 78,473 |
| Yavapai County | AZ | 39,383 |
| Maricopa County | AZ | 636 |
Other large fires in Arizona in 2004
- Nutall Complex (Nutall)31,862 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.