Old Grouch Top Fire
2019173,850 acresAlaska
The Old Grouch Top Fire burned 173,850 acres, about 272 square miles, across Yukon-Koyukuk Census Area. It began on June 5, 2019.
Watch how it happenedOld Grouch Top Fire · 2019
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 | 4.8% | 8,356 |
| Moderatemixed: many trees killed, some survive | 33% | 57,088 |
| Lowsurface fire, most trees survive | 53% | 92,628 |
| Unburned to lowislands inside the perimeter, little change | 7.3% | 12,611 |
| Increased greennessvegetation greener after the fire than before | 1.0% | 1,729 |
| Not mappedcloud, shadow or water in the satellite images | 0.8% | 1,438 |
5% of the area inside the perimeter burned at high severity, about 8,356 acres; 38% 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 | 173,970 |
Other large fires in Alaska in 2019
- Chalkyitsik Complex470,271 acres
- Hess Creek Fire181,319 acres
- Swan Lake Fire164,759 acres
- Hurst Creek Fire139,315 acres
- North River Fire110,985 acres
- Black River Fire103,354 acres
- Little Mud River Fire98,159 acres
- Little Crazy Mountain Fire78,237 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.