Hilltop Fire
202233,935 acresAlaska
The Hilltop Fire burned 33,935 acres, about 53 square miles, across Yukon-Koyukuk Census Area. It began on June 25, 2022.
Watch how it happenedHilltop Fire · 2022
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 | 4.6% | 1,549 |
| Moderatemixed: many trees killed, some survive | 42% | 14,188 |
| Lowsurface fire, most trees survive | 40% | 13,418 |
| Unburned to lowislands inside the perimeter, little change | 12% | 4,152 |
| Increased greennessvegetation greener after the fire than before | 0.1% | 33 |
| Not mappedcloud, shadow or water in the satellite images | 1.8% | 596 |
5% of the area inside the perimeter burned at high severity, about 1,549 acres; 46% 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.
| Yukon-Koyukuk Census Area | AK | 33,957 |
Other large fires in Alaska in 2022
- Koktuli River Fire296,617 acres
- Tatlawiksuk Fire262,238 acres
- Hog Butte Fire206,009 acres
- East Fork Fire169,400 acres
- Door Mountain Fire167,023 acres
- Aghaluk Mountain Fire115,788 acres
- Chitanana Fire105,682 acres
- Kiknik Fire99,643 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.