18 Feb 2025 - 18:37 EST
18 Feb 2025 - 23:37 UTC
18 Feb 2025 - 23:37 UTC
GOES-East Mesoscale view - Geostationary Lightning Mapper at 44°N - 95°W - meso LOOKUP NEEDED for 44N-95W
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0530 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0531 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0532 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0533 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0534 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0535 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0536 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0537 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0538 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0539 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0540 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0541 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0542 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0543 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0544 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0545 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0546 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0547 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0548 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0549 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0550 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0551 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0552 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0553 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0554 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0555 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0556 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Jan 2025 - 0557 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)