13 Jan 2026 - 10:37 EST
13 Jan 2026 - 15:37 UTC
13 Jan 2026 - 15:37 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 - 13 Jan 2026 - 1241 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1242 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1243 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1244 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1245 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1246 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1247 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1248 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1249 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1250 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1251 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1252 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1253 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1254 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1255 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1256 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1257 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1258 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1259 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1300 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1301 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1302 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1303 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1304 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1305 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1306 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1307 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1308 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1309 UTC
Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 13 Jan 2026 - 1310 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)