19 Jan 2026 - 04:41 EST
19 Jan 2026 - 09:41 UTC
19 Jan 2026 - 09:41 UTC
GOES-19 Mesoscale view - Geostationary Lightning Mapper at 38°N - 75°W - Near Worcester County, MD
2.5 hour loop - 30 images - 5 minute update
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0907 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0908 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0909 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0910 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0911 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0912 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0913 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0914 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0915 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0916 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0917 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0918 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0919 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0920 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0921 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0922 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0923 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0924 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0925 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0926 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0927 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0928 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0929 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0930 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0931 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0932 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0933 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0934 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0935 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 19 Jan 2026 - 0936 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)