Fire Information for Resource Management System (FIRMS)
NASA's Fire Information for Resource Management System (FIRMS) distributes Near Real-Time (NRT) active fire data within 3 hours of satellite observation from NASA's Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Terra and Aqua satellites and NASA's Visible Infrared Imaging Radiometer Suite (VIIRS) aboard the joint NASA/NOAA Suomi National Polar orbiting Partnership (Suomi NPP) and NOAA-20 satellites. FIRMS is part of NASA's Land, Atmosphere Near real-time Capability for EOS (LANCE).
Get hotspot/fire locations
|US/Canada Fire Map|
MODIS Active Fire Products
Each MODIS active fire/thermal hotspot location represents the center of a 1km pixel that is flagged by the algorithm as containing one or more fires within the pixel. Combined (Terra and Aqua) MODIS NRT active fire products (MCD14DL) are processed using the standard MOD14/MYD14 Fire and Thermal Anomalies algorithm.
MODIS Collection 6 has been available since September 2015. Key changes to the active fire / hotspots from Collections 5 to Collection 6 are listed below. For the most up to date information, please refer to the MODIS Collection 6 Active Fire Product User's Guide Revision B.
- Processing has been extended to oceans and other large water bodies to detect offshore gas flaring.
- Reduced incidence of false alarms caused by small forest clearings.
- Improved detection of small fires.
- Expanded sun-glint rejection.
- Slightly improved cloud masking.
- Slight adjustment of detection confidence calculation.
- FRP retrieval now performed using Wooster et al. (2003) approach.
- DayNight field added to the attribute table.
- Version field updated to a string field in the attribute table.
VIIRS (375m) Active Fire Products
Each VIIRS active fire/thermal hotspot location represents the center of a 375m pixel. The VIIRS data complement the MODIS fire detections but the improved spatial resolution of the 375 m data provides a greater response of fires over relatively small areas and has improved nighttime performance. Read more on VIIRS Active Fire products.
Please note, in an effort to standardize VIIRS file names from Suomi NPP, the short name for VIIRS NRT 375 m product was changed from VNP14IMGT to VNP14IMGTDL_NRT (18 April 2016).
1 February 2021: FIRMS US/Canada is now available, see Earthdata article NASA, Forest Service Partnership Expands Active Fire Mapping Capabilities and US Forest Service article Forest Service, NASA upgrade online active fire mapping tool
17 July 2020: Spurious VIIRS/NOAA-20 day time fire detections have been identified on 14 July 2020 with the Mineral Fire in California. These false fires are often picked up due to a combination of super heated smoke plumes and a high view angle. They are more likely to be picked up at night, but have been also identified in day time VIIRS detections from NOAA-20 and Suomi NPP. This is similar to the issue reported on 3 August 2018. Read more...
7 April 2020: VIIRS 375m active fire data from the NOAA-20 (JPSS-1) satellite are available as part of the FIRMS fire email alerts.
15 January 2020: VIIRS 375m active fire data from the NOAA-20 (JPSS-1) satellite has been added to FIRMS. It is available in the FIRMS map and the active fire data downloads. It is not part of the FIRMS fire email alerts but will be added in the near future.
3 August 2018: During the recent California fires some spurious VIIRS night time fire detections have been picked up due to super heated smoke plumes combined with a high view angle. Read an explanation for these events. Such incidents are rare but we suggest you exercise caution when displaying the VIIRS night time fires.
Page Last Updated: Apr 2, 2021 at 9:09 AM EDT