DescriptionDescending reflectivity core in EF5 Tornado in Parkersburg and New Hartford, Iowa.png
English: The 3D view of a rearflank descending reflectivity core (DRC) is indicated by gray arrow occurring about 7 to 11 minutes before the first spotter report of a tornado south of Aplington, Iowa. The red arrow indicates the location of the DRC on low level radar display.
National Weather Service Weather and Forecast Office – Des Moines, Iowa
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Uploaded a work by National Weather Service Weather and Forecast Office – Des Moines, Iowa from [https://www.weather.gov/media/dmx/SigEvents/2008-05-25_ParkersburgServiceAssessment.pdf EF5 Tornado in Parkersburg and New Hartford, Iowa, page 42] with UploadWizard