12 Mar 2026 - 03:49 EDT
12 Mar 2026 - 07:49 UTC
12 Mar 2026 - 07:49 UTC
GOES-19 Mesoscale view - Geostationary Lightning Mapper at 31°N - 81°W - Glynn County, GA
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1045 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1046 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1047 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1048 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1049 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1050 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1051 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1052 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1053 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1054 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1055 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1056 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1057 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1058 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1059 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1100 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1101 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1102 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1103 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1104 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1105 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1106 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1107 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1108 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1109 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1110 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1111 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1112 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1113 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Feb 2026 - 1114 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)