11 Aug 2026 - 15:56 EDT
11 Aug 2026 - 19:56 UTC
11 Aug 2026 - 19:56 UTC
GOES-19 Mesoscale view - Geostationary Lightning Mapper at 28°N - 85°W - Gulf of America near Florida
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0847 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0848 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0849 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0850 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0851 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0852 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0853 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0854 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0855 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0856 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0857 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0858 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0859 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0900 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0901 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0902 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0903 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0904 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0905 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0906 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0907 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0908 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0909 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0910 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0911 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0912 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0913 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0914 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0915 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 20 Jul 2026 - 0916 UTC
GLM Flash Extent Density over Band 13 is the number of lightning flashes that occur within a grid cell over a given period of time. FED was the first GLM product routinely available to weather service forecasters. The FED product is the best single metric to convey both the quantity and extent of lightning activity. It is useful for both storm trending applications and to depict geographic coverage.
In the FED13 visualization, GLM is superimposed on infrared Band 13 rendered in gray scale.
GLM data is produced between 54°N and 54°S.
• For more details, see the Geostationary Lightning Mapper Quick Guide, (PDF, 1.98 MB)