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      Columbiana County EMA »  NWS Definitions

National Weather Service Definitions






Approaching thunderstorm.
Credit: NOAA Photo Library, NOAA Central Library; (NSSL)


Project Vortex. The Dimmitt Tornado.
Credit: NOAA Photo Library, NOAA Central Library; (NSSL)


Cloud-to-ground lightning stroke.
Credit: NOAA Photo Library, NOAA Central Library; (NSSL)