17 Feb 2026 - 13:32 EST
17 Feb 2026 - 18:32 UTC
17 Feb 2026 - 18:32 UTC
GOES-19 Mesoscale view - Geostationary Lightning Mapper at 36°N - 101°W - Roberts County, TX
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0530 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0531 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0532 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0533 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0534 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0535 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0536 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0537 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0538 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0539 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0540 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0541 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0542 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0543 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0544 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0545 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0546 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0547 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0548 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0549 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0550 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0551 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0552 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0553 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0554 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0555 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0556 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0557 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0558 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Jan 2026 - 0559 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)