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The red fire icons on the map represent daytime detections made bythe VIIRS moderate resolution, "M-band", active fire product for the previous 24 hours. You can change which detections you want to see using the "Select Date" drop-down window in the upper left corner. The nominal resolution for the M-band is 750m at nadir. Click on a fire icon in the map to get the center coordinates for the corresponding nominal VIIRS pixel. The icon does not specify the exact location of the fire, but rather a proximate location which is effected by the sensor's scan angle and response function. The M-band product is obtained from the NASA Level-1 and Atmosphere Archive & Distribution System (LAADS) Distributed Active Archive Center (DAAC) ftp.

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The blue fire icons on the map represent daytime detections made by the VIIRS imager resolution, "I-band", active fire product for the previous 24 hours. You can change which detections you want to see using the "Select Date" drop-down window in the upper left corner. The nominal resolution for the I-band is 375m at nadir. Click on a fire icon in the map to get the center coordinates for the corresponding nominal VIIRS pixel. The icon does not specify the exact location of the fire, but rather a proximate location which is effected by the sensor's scan angle and response function. The I-band product is obtained from the NASA Level-1 and Atmosphere Archive & Distribution System (LAADS) Distributed Active Archive Center (DAAC) ftp.

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The red satellite icon represents the center of the overpass swath. VIIRS' swath width is 3040 km during normal operations.

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U.S. active fire perimeters are distributed as an RSS feed by the USGS Geospatial Multi-Agency Coodination (GeoMAC) website. The fire perimeters are updated frequently using "incident intelligence sources, GPS data, infrared (IR) imagery from fixed wing, and satellite platforms". This information is critical to fire managers to provide near-real time situational awareness.

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The InciWeb RSS feeds provide the latest incident-specific updates nationally. InciWeb is an interagency all-risk incident web information management system provided by the U.S. Forest Service. More information can be found at the InciWeb home page.