Ryan Fire
200236,898 acresArizona
The Ryan Fire burned 36,898 acres, about 58 square miles, across 2 counties. It began on April 29, 2002.
Watch how it happenedRyan Fire · 2002
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 | 18% | 6,603 |
| Moderatemixed: many trees killed, some survive | 62% | 22,973 |
| Lowsurface fire, most trees survive | 15% | 5,627 |
| Unburned to lowislands inside the perimeter, little change | 4.5% | 1,662 |
| Increased greennessvegetation greener after the fire than before | 0.1% | 33 |
18% of the area inside the perimeter burned at high severity, about 6,603 acres; 80% 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.
| Santa Cruz County | AZ | 27,388 |
| Cochise County | AZ | 9,534 |
Other large fires in Arizona in 2002
- Rodeo Fire461,451 acres
- Bullock Fire31,754 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.