13 Jul 2026 - 08:03 EDT
13 Jul 2026 - 12:03 UTC
13 Jul 2026 - 12:03 UTC
GOES-West Mesoscale view - Geostationary Lightning Mapper at 34°N - 103°W - Bailey County, TX
16 frame animation displayed.
To enlarge, pause animation & click the image. Hover over popups to zoom. Use slider to navigate.
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1511 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1512 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1513 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1514 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1515 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1516 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1517 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1518 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1519 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1520 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1521 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1522 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1523 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1524 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1525 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Feb 2026 - 1526 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)