St Marys Fire
200134,907 acresWashington
The St Marys Fire burned 34,907 acres, about 55 square miles, across Okanogan County. It began on August 14, 2001.
Watch how it happenedSt Marys Fire · 2001
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 | 3.0% | 1,058 |
| Moderatemixed: many trees killed, some survive | 22% | 7,734 |
| Lowsurface fire, most trees survive | 63% | 21,999 |
| Unburned to lowislands inside the perimeter, little change | 11% | 3,993 |
| Increased greennessvegetation greener after the fire than before | 0.3% | 122 |
3% of the area inside the perimeter burned at high severity, about 1,058 acres; 25% 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.
| Okanogan County | WA | 34,914 |
Other large fires in Washington in 2001
- Rex Creek Complex (Rex Creek)54,461 acres
Monitoring Trends in Burn Severity (USGS and U.S. Forest Service). Type recorded: Wildfire.