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FIRMS has recently integrated an additional Harmonized Landsat/Sentinel-2 (HLS) Imagery product. The Reflectance (Bands 7-5-4) layer from Landsat 8/OLI is a OLI  and (Bands 12, 8a, 4) from Sentinel 2A and 2B are false color composite (FCC) image images 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. 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  Interagency Implementation and Advanced Concept Concepts 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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The HLS layers are only available in Advanced Mode (basic mode has reduced functionality to minimize the complexity of the interface). 
•    Go to https://firms.modaps.eosdis.nasa.gov/usfs/map/ or https://firms.modaps.eosdis.nasa.gov/map/
•    Toggle the “Advanced Mode” button in the upper right .
•    Toggle the “Historical” button in the upper right.
•    The HLS Landsat and Sentinel 2 imagery are in the “Landsat “Harmonized Landsat/Sentinel Imagery” -2” grouping in the table of contents.
•    Use the tools/prompts to access and view the imagery.

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