Monarch Fire
200725,043 acresUtah
The Monarch Fire burned 25,043 acres, about 39 square miles, across 2 counties. It began on July 18, 2007.
Watch how it happenedMonarch Fire · 2007
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 | 2.8% | 711 |
| Moderatemixed: many trees killed, some survive | 27% | 6,802 |
| Lowsurface fire, most trees survive | 27% | 6,659 |
| Unburned to lowislands inside the perimeter, little change | 43% | 10,871 |
3% of the area inside the perimeter burned at high severity, about 711 acres; 30% 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.
| Tooele County | UT | 23,749 |
| Box Elder County | UT | 1,296 |
Other large fires in Utah in 2007
- Milford Flat Fire348,702 acres
- Winecup Complex (West Fork)159,891 acres
- Black Pine 2 Fire69,896 acres
- Neola North Fire46,875 acres
- Salt Creek Fire26,908 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.