16 Jan 2026 - 12:50 EST
16 Jan 2026 - 17:50 UTC
16 Jan 2026 - 17:50 UTC
GOES-19 - Sector view: Great Lakes - Geostationary Lightning Mapper
1 hour loop - 12 images - 5 minute update
To enlarge, pause animation & click the image. Hover over popups to zoom. Use slider to navigate.
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1641 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1646 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1651 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1656 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1701 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1706 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1711 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1716 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1721 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1726 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1731 UTC
Geostationary Lightning Mapper - Lightning flash extent over GeoColor - 16 Jan 2026 - 1736 UTC
GLM Extent Density of Lightning 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 this visualization, GLM is superimposed on a GeoColor background image.
GLM data is produced between 54°N and 54°S.
• For more details, see the Geostationary Lightning Mapper Quick Guide, (PDF, 1.98 MB)