North Hill Fire
198427,145 acresMontana
The North Hill Fire burned 27,145 acres, about 42 square miles, across Lewis and Clark County. It began on August 27, 1984.
Watch how it happenedNorth Hill Fire · 1984
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 |
|---|---|---|
| Highmost vegetation consumed, soils altered | 7.4% | 2,011 |
| Moderatemixed: many trees killed, some survive | 23% | 6,364 |
| Lowsurface fire, most trees survive | 50% | 13,479 |
| Unburned to lowislands inside the perimeter, little change | 19% | 5,050 |
| Increased greennessvegetation greener after the fire than before | 0.9% | 240 |
7% of the area inside the perimeter burned at high severity, about 2,011 acres; 31% 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.
| Lewis and Clark County | MT | 27,161 |
Other large fires in Montana in 1984
- Hawk Creek Fire157,824 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.