14 Feb 2025 - 20:37 EST
15 Feb 2025 - 01:37 UTC
15 Feb 2025 - 01:37 UTC
GOES-West Mesoscale view - Geostationary Lightning Mapper at 37°N - 118°W - meso LOOKUP NEEDED for 37N-118W
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1730 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1731 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1732 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1733 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1734 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1735 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1736 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1737 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1738 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1739 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1740 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1741 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1742 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1743 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1744 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1745 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1746 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1747 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1748 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1749 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1750 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1751 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1752 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1753 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1754 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1755 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 1756 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 24 Jan 2025 - 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)