8 Sep 2026 - 08:28 EDT
8 Sep 2026 - 12:28 UTC
8 Sep 2026 - 12:28 UTC
GOES-West Mesoscale view - Geostationary Lightning Mapper at 55°N - 149°W - North Pacific Ocean
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1714 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1715 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1716 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1717 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1718 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1719 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1720 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1721 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1722 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1723 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1724 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1725 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1726 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1727 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 04 Sep 2026 - 1728 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Sep 2026 - 2352 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Sep 2026 - 2353 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Sep 2026 - 2354 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Sep 2026 - 2355 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Sep 2026 - 2356 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Sep 2026 - 2357 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Sep 2026 - 2358 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Sep 2026 - 2359 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Sep 2026 - 0000 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Sep 2026 - 0001 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Sep 2026 - 0002 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Sep 2026 - 0003 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Sep 2026 - 0004 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Sep 2026 - 0005 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 08 Sep 2026 - 0006 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)