11 Feb 2025 - 08:06 EST
11 Feb 2025 - 13:06 UTC
11 Feb 2025 - 13:06 UTC
GOES-East Mesoscale view - Geostationary Lightning Mapper at 31°N - 86°W - meso LOOKUP NEEDED for 31N-86W
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Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1130 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1131 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1132 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1133 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1134 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1135 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1136 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1137 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1138 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1139 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1140 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1141 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1142 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1143 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1144 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1145 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1146 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1147 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1148 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1149 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1150 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1151 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1152 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1153 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1154 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1155 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1156 UTC

Geostationary Lightning Mapper - Lightning flash extent density over IR Band 13 - 22 Jan 2025 - 1157 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)