16 Apr 2026 - 06:57 EDT
16 Apr 2026 - 10:57 UTC
16 Apr 2026 - 10:57 UTC
GOES-West Mesoscale view - Geostationary Lightning Mapper at 39°N - 119°W - Lyon County, NV
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1529 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1530 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1531 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1532 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1533 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1534 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1535 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1536 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1537 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1538 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1539 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1540 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1541 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1542 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1543 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1544 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1545 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1546 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1547 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1548 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1549 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1550 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1551 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1552 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1553 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1554 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1555 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1556 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1557 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 15 Apr 2026 - 1558 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)