19 Apr 2026 - 05:30 EDT
19 Apr 2026 - 09:30 UTC
19 Apr 2026 - 09:30 UTC
GOES-19 Mesoscale view - Geostationary Lightning Mapper at 38°N - 75°W - Near Worcester County, MD
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1259 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1300 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1301 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1302 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1303 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1304 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1305 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1306 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1307 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1308 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1309 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1310 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1311 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1312 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1313 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1314 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1315 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1316 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1317 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1318 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1319 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1320 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1321 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1322 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1323 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1324 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1325 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1326 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1327 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 18 Apr 2026 - 1328 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)