23 Mar 2025 - 16:22 EDT
23 Mar 2025 - 20:22 UTC
23 Mar 2025 - 20:22 UTC
GOES-East Mesoscale view - Geostationary Lightning Mapper at 1°S - 78°W - meso LOOKUP NEEDED for 1S-78W
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1530 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1531 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1532 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1533 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1534 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1535 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1536 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1537 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1538 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1539 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1540 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1541 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1542 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1543 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1544 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1545 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1546 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1547 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1548 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1549 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1550 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1551 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1552 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1553 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1554 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1555 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1556 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Mar 2025 - 1557 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)