Unnamed Fire
199032,689 acresMinnesota
The Unnamed Fire burned 32,689 acres, about 51 square miles, across 3 counties. It began on April 18, 1990.
Watch how it happenedUnnamed Fire · 1990
How it happened
See how severely each place burned, revealed outward from where it started.
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 | 63% | 20,583 |
| Unburned to lowislands inside the perimeter, little change | 37% | 12,037 |
| Increased greennessvegetation greener after the fire than before | 0.2% | 69 |
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.
| Clearwater County | MN | 32,303 |
| Pennington County | MN | 337 |
| Beltrami County | MN | 52 |
Other large fires in Minnesota in 1990
- Unnamed Fire43,529 acres
- Unnamed Fire26,357 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Other.