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Homepage » Data Products Overview » LANDFIRE 2023 Update (LF 2.4.0)

LANDFIRE 2023 Update (LF 2.4.0)

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The LANDFIRE 2023 Update (LF 2023) product suite represents the final step in the ongoing goal to move towards annual updates and reduced latency. LANDFIRE'S goal has been to release an annual update every year that represents one year, specifically the previous year. Similar to the LF 2022 Update, in LF 2023, disturbances from the previous year are represented in current year products. However, LF 2023 marks the first version where only the past year is represented. Whereas LF 2022 included 2 years of disturbance (2021 and 2022) the LF 2023 Update includes only one year of disturbance (2023).

NEW Products included in LF 2023

To provide sooner delivery of LANDFIRE Annual Disturbance data and to ensure a more complete record, LANDFIRE has decided to distribute more Annual Disturbance products.

What does this change mean? There are now three Annual Disturbance products released in a single version – each with a unique name and identity.

Limited Annual Disturbance (LDist) is a new product making its debut with the LF 2023 Update. LDist is designed to provide a first cut of landscape change information as soon as possible to support time-sensitive updates such as risk management efforts. This early release does not include satellite change detection to capture additional disturbances and does not provide image-based severity for contributed events. Some fire program data includes severity which is present in the LANDFIRE LDist product. However, many fires and disturbance events lack severity assignments, therefore LDist severity is a default based on disturbance type (Clearcut = High Severity, Wildfire = Medium Severity, all others including prescribed fire = Low Severity).

LDist includes data inputs from the following sources:

  • Fire program perimeters and burn severity where available from four sources: Monitoring Trends in Burn Severity (MTBS), Burned Area Reflectance Classification (BARC), Rapid Assessment of Vegetation Condition after Wildfire (RAVG), Landsat Burned Area (BA)
  • Event polygon datasets submitted from three national contributors: US Bureau of Land Management (BLM), National Park Service (NPS), and the US Fish and Wildlife Service (USFWS)
  • Event polygon datasets obtained from four online national sources: Forest Service Activity Tracking System (FACTS), National Fire Plan Operations and Reporting System (NFPORS), National Interagency Fire Center (NIFC), USFS National Insect and Disease Risk Map (NIDRM)

The LDist product featured in the LF 2023 update (named LDist23) is the first of three Annual Disturbance products being released in 2024. LDist23 is an early "draft" of the LANDFIRE Annual Disturbance product and includes fires, disturbance events, and land management activities for Fiscal Year 2023 (FY2023) from trusted national sources obtained in November 2023.

Preliminary Annual Disturbance (PDist) is another new product making its debut with the LF 2023 Update. PDist is designed to provide a second "draft" of landscape change information and will have multiple extent releases throughout 2024:

  • Conterminous United States (CONUS) – by GeoArea
  • Alaska (AK)
  • Hawaii (HI)
  • Puerto Rico and the U.S. Virgin Islands (PRVI)

PDist includes disturbance events for FY2023 from regional sources obtained in November 2023. Additionally, similar to annual disturbance products in past versions, PDist includes results from LANDFIRE satellite change detection and image-based severity. A complete list of data contributors can be found here: LANDFIRE Program: Contribute Data - Previous Contributions (

The PDist product featured in the LF 2023 Update (named PDist23) will be used to update the Vegetation, Fuel (including Fuel Disturbance), and Fire Regime suite of products included in releases throughout the rest of 2024.

The Final Annual Disturbance (Dist) product is the "final" draft of Annual Disturbance data for a give version. The Annual Disturbance product included in the LF 2023 Update (named Dist23) releases beginning in the fall of 2024. Compared to PDist23, Dist23 includes additional fires and disturbance events for FY2023, these events were harvested from a second "pull" of the national online sources in June 2024.

  • The Public Events Geodatabase for LF 2023 releases in late 2024 and will include events captured from this second "pull".
  • The events harvested from the second "pull" will not be incorporated into the production of Fuel Disturbance (FDist23) and other Fuel, Vegetation, and Fire Regime products for the LF 2023 Update. These events will be included in the next version (coming in 2025).

These products are also returning as standalone products once again:

  • Fire Return Interval (FRI)
  • Percent Fire Severity (PFS)
  • Fire Regime Groups (FRG)

picture of the US with colors depicting the release schedule
LF 2023 release schedule

picture of schedule of when Disturbance will release

LF 2023 Update Products and Descriptions

Theme Product Name Abbreviation
Disturbance Limited Disturbance LDist23
Preliminary Annual Disturbance PDist23
2023 Annual Disturbance Dist23
Historical Disturbance HDist23
Fuel Disturbance FDist23
Fire Regime Fire Regime Groups FRG
Succession Classes SClass
Vegetation Condition Class VCC
Vegetation Departure Index VDep
Biophysical Settings BPS
Fire Return Interval FRI
Percent Fire Severity PFS
Fuel 13 Anderson Fire Behavior Fuel Models FBFM13
40 Scott and Burgan Fire Behavior Fuel Models FBFM40
Forest Canopy Bulk Density CBD
Forest Canopy Base Height CBH
Forest Canopy Cover CC
Forest Canopy Height CH
Canadian Forest Fire Danger Rating System CFFDRS
Fuel Vegetation Cover FVC
Fuel Vegetation Height FVH
Fuel Vegetation Type FVT
Fuel Rulesets Database FRDB
Reference Public Events Geodatabase EventsDB
Public Exotics Geodatabase ExoticsDB
Public Model Ready Events Geodatabase ModelReadyDB
Vegetation Existing Vegetation Type EVT
Existing Vegetation Cover EVC
Existing Vegetation Height EVH

LF 2023 Update Schedule

LF 2023 is being released by Conterminous United States (CONUS) GeoArea beginning in May 2024 with the SW along with Alaska (AK). Remaining GeoAreas, Hawaii (HI), and select Insular Areas (IA), Puerto Rico and the US Virgin Islands (PRVI) will be later in the year.

January 2024
Limited LDist CONUS, AK, HI, IA

Early May 2024

Late May 2024

July 2024

October 2024
CONUS (full extent)

November 2024

2023 GeoAreas


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