23 Mar 2025 - 18:16 EDT
23 Mar 2025 - 22:16 UTC
23 Mar 2025 - 22:16 UTC
GOES-East Mesoscale view - Geostationary Lightning Mapper at 30°N - 90°W - meso LOOKUP NEEDED for 30N-90W
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2230 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2231 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2232 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2233 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2234 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2235 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2236 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2237 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2238 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2239 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2240 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2241 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2242 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2243 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2244 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2245 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2246 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2247 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2248 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2249 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2250 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2251 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2252 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2253 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2254 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2255 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2256 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 07 Feb 2025 - 2257 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)