400 Fire
201727,233 acresWashington
The 400 Fire burned 27,233 acres, about 43 square miles, across 2 counties. It began on July 20, 2017.
Watch how it happened400 Fire · 2017
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 |
|---|---|---|
| Lowsurface fire, most trees survive | 96% | 26,196 |
| Unburned to lowislands inside the perimeter, little change | 3.7% | 1,011 |
| Increased greennessvegetation greener after the fire than before | 0.1% | 23 |
Most of the area inside the perimeter burned at low severity or not at all.
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.
| Yakima County | WA | 23,160 |
| Kittitas County | WA | 4,057 |
Other large fires in Washington in 2017
- Diamond Creek Fire117,619 acres
- Norse Peak Fire50,992 acres
- Jolly Mountain Fire38,148 acres
- Silver Dollar Fire30,795 acres
- Sutherland Canyon Fire29,507 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.