8 Feb 2025 - 02:44 EST
8 Feb 2025 - 07:44 UTC
8 Feb 2025 - 07:44 UTC
GOES-East Mesoscale view - Geostationary Lightning Mapper at 34°S - 58°W - Uruguay
30 frame animation displayed.
To enlarge, pause animation & click the image. Hover over popups to zoom. Use slider to navigate.
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1430 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1431 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1432 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1433 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1434 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1435 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1436 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1437 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1438 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1439 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1440 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1441 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1442 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1443 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1444 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1445 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1446 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1447 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1448 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1449 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1450 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1451 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1452 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1453 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1454 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1455 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 1456 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 02 Dec 2023 - 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)