18 Apr 2026 - 10:38 EDT
18 Apr 2026 - 14:38 UTC
18 Apr 2026 - 14:38 UTC
GOES-19 Mesoscale view - Geostationary Lightning Mapper at 36°N - 101°W - Roberts County, TX
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0330 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0331 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0332 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0333 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0334 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0335 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0336 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0337 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0338 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0339 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0340 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0341 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0342 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0343 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0344 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0345 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0346 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0347 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0348 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0349 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0350 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0351 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0352 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0353 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0354 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0355 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0356 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0357 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0358 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Apr 2026 - 0359 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)