13 Jan 2026 - 21:22 EST
14 Jan 2026 - 02:22 UTC
14 Jan 2026 - 02:22 UTC
GOES-19 Mesoscale view - Geostationary Lightning Mapper at 39°N - 104°W - Elbert County, CO
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1641 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1642 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1643 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1644 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1645 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1646 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1647 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1648 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1649 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1650 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1651 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1652 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1653 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1654 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1655 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1656 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1657 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1658 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1659 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1700 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1701 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1702 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1703 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1704 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1705 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1706 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1707 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1708 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1709 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 17 Dec 2025 - 1710 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)