Delivery of Suomi National Polar-orbiting Partnership (Suomi NPP) satellite data products will cease on November 1, 2026. Data users should transition now to alternative products from NOAA-21 and NOAA-20. Suomi NPP data announcement

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Photograph of a multicell thunderstorm, which may last for several hours and produce severe weather.

Lightning Spies

ALTUS Cumulus Electrification Study (ACES) help validate LIS data to examine thunderstorms.

Feature Article

April 19, 2021

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