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:
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:
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 (usgs.gov).
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.
These products are also returning as standalone products once again:
LF 2023 Update Products and Descriptions
|Preliminary Annual Disturbance
|2023 Annual Disturbance
|Fire Regime Groups
|Vegetation Condition Class
|Vegetation Departure Index
|Fire Return Interval
|Percent Fire Severity
|13 Anderson Fire Behavior Fuel Models
|40 Scott and Burgan Fire Behavior Fuel Models
|Forest Canopy Bulk Density
|Forest Canopy Base Height
|Forest Canopy Cover
|Forest Canopy Height
|Canadian Forest Fire Danger Rating System
|Fuel Vegetation Cover
|Fuel Vegetation Height
|Fuel Vegetation Type
|Fuel Rulesets Database
|Public Events Geodatabase
|Public Exotics Geodatabase
|Public Model Ready Events Geodatabase
|Existing Vegetation Type
|Existing Vegetation Cover
|Existing Vegetation Height
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.