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For the latest forecasts and critical weather information, visit weather.gov.
Data Products: Lightning Detection (EVENTS, GROUPS and FLASHES)
The GOES-R Series Geostationary Lightning Mapper (GLM) detects the light emitted by lightning at the tops of clouds day and night and collects information such as the frequency, location and extent of lightning discharges. The instrument measures total lightning, both in-cloud and cloud-to-ground, to aid in forecasting developing severe storms and a wide range of high-impact environmental phenomena including hailstorms, microburst winds, tornadoes, hurricanes, flash floods, snowstorms and fires.