13 Jan 2026 - 03:49 EST
13 Jan 2026 - 08:49 UTC
13 Jan 2026 - 08:49 UTC
GOES-West Mesoscale view - Geostationary Lightning Mapper at 55°N - 134°W - West coast of British Columbia, Canada
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1620 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1621 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1622 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1623 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1624 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1625 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1626 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1627 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1628 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1629 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1630 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1631 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1632 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1633 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1634 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1635 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1636 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1637 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1638 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1639 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1640 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1641 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1642 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1643 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1644 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1645 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1646 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1647 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1648 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 10 Jan 2026 - 1649 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)