15 Feb 2025 - 09:59 EST
15 Feb 2025 - 14:59 UTC
15 Feb 2025 - 14:59 UTC
GOES-East Mesoscale view - Geostationary Lightning Mapper at 16°N - 58°W - meso LOOKUP NEEDED for 16N-58W
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1730 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1731 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1732 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1733 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1734 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1735 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1736 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1737 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1738 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1739 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1740 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1741 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1742 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1743 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1744 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1745 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1746 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1747 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1748 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1749 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1750 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1751 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1752 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1753 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1754 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1755 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1756 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 12 Sep 2024 - 1757 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)