8 Nov 2025 - 17:41 EST
8 Nov 2025 - 22:41 UTC
8 Nov 2025 - 22:41 UTC
GOES-19 Mesoscale view - Geostationary Lightning Mapper at 38°N - 75°W - Near Worcester County, MD
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1902 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1903 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1904 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1905 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1906 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1907 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1908 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1909 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1910 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1911 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1912 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1913 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1914 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1915 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1916 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1917 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1918 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1919 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1920 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1921 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1922 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1923 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1924 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1925 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1926 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1927 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1928 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1929 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1930 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Nov 2025 - 1931 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)