10 May 2026 - 13:04 EDT
10 May 2026 - 17:04 UTC
10 May 2026 - 17:04 UTC
GOES-West Mesoscale view - Geostationary Lightning Mapper at 40°N - 104°W - Morgan County, CO
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0630 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0631 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0632 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0633 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0634 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0635 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0636 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0637 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0638 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0639 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0640 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0641 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0642 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0643 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0644 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0645 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0646 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0647 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0648 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0649 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0650 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0651 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0652 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0653 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0654 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0655 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0656 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0657 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0658 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 21 Apr 2026 - 0659 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)