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12 Dec 2024 - 21:36 EST
13 Dec 2024 - 02:36 UTC

Post-tropical Cyclone Katia - GeoColor at 28.0°N - 34.4°W

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GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0100 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0100 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0110 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0110 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0120 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0120 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0130 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0130 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0140 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0140 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0150 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0150 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0200 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0200 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0210 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0210 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0220 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0220 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0230 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0230 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0240 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0240 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0250 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0250 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0300 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0300 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0310 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0310 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0320 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0320 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0330 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0330 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0340 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0340 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0350 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0350 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0400 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0400 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0410 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0410 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0420 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0420 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0430 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0430 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0440 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0440 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0450 UTC
GeoColor - True Color daytime, multispectral IR at night - 05 Sep 2023 - 0450 UTC

GeoColor is a multispectral product composed of True Color (using a simulated green component) during daytime, and an Infrared product that uses bands 7 and 13 at night. During the day, the imagery looks approximately as it would when viewed with human eyes from space. At night, the blue colors represent liquid water clouds such as fog and stratus, while gray to white indicate higher ice clouds, and the city lights come from a static database derived from the VIIRS Day Night Band.

GeoColor was developed at the Cooperative Institute for Research in the Atmosphere (CIRA) and the STAR Regional and Mesoscale Meteorology Branch (RAMMB). For a full description of the algorithm, please see this article.

Please credit CIRA/NOAA when using GeoColor imagery.

NOTE: Lighted areas shown in nighttime images are not real-time depictions of city lights. The layer is derived from a compilation of JPSS VIIRS Day Night Band images and is included for orientation purposes.

• For more details, see the CIRA GeoColor Product Quick Guide, (PDF, 1.24 MB)