17 Apr 2026 - 23:39 EDT
18 Apr 2026 - 03:39 UTC
18 Apr 2026 - 03:39 UTC
GOES-West Mesoscale view - Geostationary Lightning Mapper at 1°S - 78°W - Ecuador
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1830 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1831 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1832 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1833 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1834 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1835 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1836 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1837 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1838 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1839 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1840 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1841 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1842 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1843 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1844 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1845 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1846 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1847 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1848 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1849 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1850 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1851 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1852 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1853 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1854 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1855 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1856 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1857 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1858 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 16 Apr 2026 - 1859 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)