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A screenshot from FIRMS displaying the Landsat Adjusted Reflectance Harmonized Landsat Sentinel (HLS) using bands 7-5-4. It shows the Crews Gap Fire in Texas, USA as captured on 16 15 March 2022. In this image, the burned areas appear in brick red and are overlain with active fire pixels from MODIS and VIIRS. (Link to view in FIRMS)


FIRMS has recently integrated an additional Harmonized Landsat Sentinel (HLS) product. The Reflectance (Bands 7-5-4) layer from Landsat 8/OLI is a false color composite (FCC) image that allow us to visualize wavelengths that the human eye cannot see (i.e. short wave infrared and near infrared). Burned areas appear almost brick red making it easier to see fire affected areas and water is very dark, almost black, which makes it much easier to see lakes or flooded lands. There is a separate FCC imagery is also available for the combined Sentinel 2A and 2B ) layer in FIRMS. 

Unlike other satellite imagery layers in FIRMS, which are provided through NASA GIBS, the beta version HLS False Color Composite Imagery (Bands 7-5-4 for Landsat and Bands 12, 8a, 4 for Sentinel 2A and 2B), are provided dynamically through the NASA IMPACT program NASA  Interagency Implementation and Advanced Concept Team (IMPACT), as such it may take slightly longer to display than the HLS True Color imagery through GIBS. HLS imagery is currently available approximately 2 -4 days after acquisition. 

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Some things to note:
•    The HLS imagery is not near real-time data.  It is currently available about 2 -4 days after acquisition.
•    The reach back on this service goes back to March 15, 2022.
•    As the FCC is dynamically generated, it may take slightly longer to display than the True Color imagery through GIBS. We are monitoring the performance of the HLS FCC imagery and welcome feedback.
•    Zoom scale to display the false color composite data is currently set to 11 through 14, but true color can be viewed at smaller scales.  The zoom level is indicated at the very end of the URL (e.g., 11z).
•    Orbit tracks for Landsat 8 and Sentinel 2A and 2B are available as layers in the table of contents.  
•    Landsat 9 data is anticipated to be incorporated into the HLS product in late April.  At that time, or soon thereafter, it will be part of the HLS service in FIRMS US/Canada.

Find out more about HLS