Grassy Ridge Fire
2018106,102 acresIdaho
The Grassy Ridge Fire burned 106,102 acres, about 166 square miles, across 3 counties. It began on July 26, 2018.
Watch how it happenedGrassy Ridge Fire · 2018
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 |
|---|---|---|
| Moderatemixed: many trees killed, some survive | 58% | 61,469 |
| Lowsurface fire, most trees survive | 39% | 40,985 |
| Unburned to lowislands inside the perimeter, little change | 3.4% | 3,647 |
No part of the fire was classed as high severity; 58% burned at moderate 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.
| Clark County | ID | 60,394 |
| Fremont County | ID | 45,064 |
| Jefferson County | ID | 705 |
Other large fires in Idaho in 2018
- Bruneau Fire87,633 acres
- Sharps Fire63,923 acres
- Mesa Fire34,517 acres
- Rabbit Foot Fire33,812 acres
- Winter Camp Fire29,271 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.