15 Mar 2025 - 19:44 EDT
15 Mar 2025 - 23:44 UTC
15 Mar 2025 - 23:44 UTC
GOES-East Mesoscale view - Geostationary Lightning Mapper at 34°N - 89°W - meso LOOKUP NEEDED for 34N-89W
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1423 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1424 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1425 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1426 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1427 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1428 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1429 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1430 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1431 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1432 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1433 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1434 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1435 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1436 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1437 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1438 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1439 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1440 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1441 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1442 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1443 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1444 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1445 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1446 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1447 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1448 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1456 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 05 Mar 2025 - 1457 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)