Monitoring Trends in Burn Severity (ver. 12.0, April 2025)

The Monitoring Trends in Burn Severity (MTBS) Program assesses the frequency, extent, and magnitude (size and severity) of all large wildland fires (including wildfires and prescribed fires) in the conterminous United States (CONUS), Alaska, Hawaii, and Puerto Rico for the period of 1984 and beyond. All fires reported as greater than 1,000 acres in the western U.S. and greater than 500 acres in the eastern U.S. are mapped across all ownerships. MTBS produces a series of geospatial and tabular data for analysis at a range of spatial, temporal, and thematic scales and are intended to meet a variety of information needs that require consistent data about fire effects through space and time. This map layer includes a vector point shapefile and a burned area boundary shapefile of the location of all currently inventoried fires occurring between calendar year 1984 and 2024 for CONUS, Alaska, Hawaii, and Puerto Rico. Fires omitted from this mapped inventory are those where suitable satellite imagery was not available, or fires were not discernable from available imagery.

First posted - January 1, 2021
Revised - June 28, 2022 (version 2.0)
Revised - January 6, 2023 (version 3.0)
Revised - March 31, 2023 (version 4.0)
Revised - August 3, 2023 (version 5.0)
Revised - October 26, 2023 (version 6.0)
Revised - January 23, 2024 (version 7.0)
Revised - April 29, 2024 (version 8.0)
Revised - August 22, 2024 (version 9.0)
Revised - October 29, 2024 (version 10.0)
Revised - January 31, 2025 (version 11.0)
Revised - April 22, 2025 (version 12.0)