USGS Updates Burn Severity Portal With New Fire Data
The latest portal release adds hundreds of fire maps and improves dataset consistency for researchers and land managers.
Updated on Oct. 21, 2026 in Geography
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The U.S. Geological Survey updated its Burn Severity Portal in the third quarter of 2026, adding hundreds of new fire maps and datasets. This release improves map consistency across several wildfire monitoring projects and provides access to newly mapped fire data.
Why it matters
The portal provides essential data for land management and ecological assessment by standardizing how wildfire severity is quantified across the United States. Expanding this archive accelerates research into post-fire landscape recovery and vegetation trajectory.
The 2026 Q3 update introduces 315 new entries for Monitoring Trends in Burn Severity and 25 for Burned Area Emergency Response. Users can now access raster mosaics by extent and year, representing a scale of nearly 31,000 documented fires in the primary archive.
The players
United States Geological Survey
A federal science agency that provides geospatial data and research on natural hazards, ecosystems, and environmental health.
National Park Service
The federal bureau responsible for protecting national parks and managing the natural resources and historical sites within their boundaries.
The details
The Burn Severity Portal centralizes fire occurrence and polygon data, allowing researchers to download standardized mapping products. The recent update focused on re-issuing 221 fire maps for Monitoring Trends in Burn Severity to improve consistency across the project lifecycle. These tools enable the tracking of vegetation recovery through projects like the Rapid Assessment of Vegetation Cover After Wildfire (RAVG), which processes satellite imagery to calculate burn intensity.
Timeline
1984 to present: Monitoring Trends in Burn Severity has mapped large fires across the country.
2026 Q3: The USGS released the latest set of data updates and map improvements.
2026: Two fires were mapped for the Provisional Initial Assessment project.
The Tech Race
This update strengthens the data infrastructure for the Monitoring Trends in Burn Severity project, which has been the primary framework for large fire mapping since 1984. It aligns with ongoing efforts to standardize satellite-derived assessments for post-fire ecological recovery.
Researchers and land managers can now access updated fire occurrence and polygon products directly through the portal for improved landscape analysis. The system allows for bulk data acquisition via raster mosaics, which are categorized by year and extent for easier integration into mapping workflows.
The takeaway
The portal update improves the reliability of long-term fire tracking, which is essential for climate-resilient land management. Interested parties should watch for the planned expansion of public access to Burned Area Emergency Response data, which is currently in development.
Further reading
For more information on regional environmental monitoring, visit the Geography section.
Source note: This article includes information reported by USGS.
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