14 Feb 2025 - 03:13 EST
14 Feb 2025 - 08:13 UTC
14 Feb 2025 - 08:13 UTC
GOES-West Mesoscale view - Geostationary Lightning Mapper at 41°N - 115°W - meso LOOKUP NEEDED for 41N-115W
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0529 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0530 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0531 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0532 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0533 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0534 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0535 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0536 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0537 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0538 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0539 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0540 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0541 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0542 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0543 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0544 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0545 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0546 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0547 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0548 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0549 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0550 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0551 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0552 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0553 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0554 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0555 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 11 Sep 2024 - 0556 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)