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  2. 2024 Greenfield tornado - Wikipedia

    en.wikipedia.org/wiki/2024_Greenfield_tornado

    Part of the Tornado outbreak sequence of May 19–27, 2024 and Tornadoes of 2024. On the afternoon of May 21, 2024, a violent and destructive multi-vortex tornado struck the communities of Villisca, Nodaway, Brooks, Corning, and Greenfield in southwestern Iowa, killing five people and injuring 35 others. The tornado was the strongest of a large ...

  3. NEXRAD - Wikipedia

    en.wikipedia.org/wiki/NEXRAD

    NEXRAD or Nexrad (Next-Generation Radar) is a network of 159 high-resolution S-band Doppler weather radars operated by the National Weather Service (NWS), an agency of the National Oceanic and Atmospheric Administration (NOAA) within the United States Department of Commerce, the Federal Aviation Administration (FAA) within the Department of Transportation, and the U.S. Air Force within the ...

  4. Tim Samaras - Wikipedia

    en.wikipedia.org/wiki/Tim_Samaras

    Samaras had another son, Matt Winter, whom he had learned about only seven years before Samaras' death and who was welcomed into the family. Winter was also fascinated by weather and was informed by his mother that Tim was his father after he heard Samaras speak at the 2006 Severe Storms and Doppler Radar Conference in Des Moines, Iowa. [5]

  5. WHO-DT - Wikipedia

    en.wikipedia.org/wiki/WHO-DT

    WHO-DT (channel 13) is a television station in Des Moines, Iowa, United States, affiliated with NBC and owned by Nexstar Media Group. The station's studios are located on Grand Avenue in downtown Des Moines, and its transmitter is located in Alleman, Iowa. Although WHO-DT's call letters sound like "who" if pronounced as a word, the station is ...

  6. Doppler radar - Wikipedia

    en.wikipedia.org/wiki/Doppler_radar

    Doppler effect. The emitted signal toward the car is reflected back with a variation of frequency that depends on the speed away/toward the radar (160 km/h). This is only a component of the real speed (170 km/h). The Doppler effect (or Doppler shift), named after Austrian physicist Christian Doppler who proposed it in 1842, is the difference ...

  7. Freese-Notis - Wikipedia

    en.wikipedia.org/wiki/Freese-Notis

    The Freese-Notis Weather company, commonly known as Freese-Notis, is a weather forecasting corporation. Headquartered in Des Moines, Iowa, United States, it has a global presence in the fields of meteorology, analytics, and related services, and also provides Internet Access DSL and Web hosting services. The company strengths for natural gas ...

  8. Tornado outbreak of April 25–28, 2024 - Wikipedia

    en.wikipedia.org/wiki/Tornado_outbreak_of_April...

    Radar image of the EF3 Crescent tornado at peak intensity south of the town. This destructive tornado first touched down just north of US 6 in the western part of Council Bluffs, Iowa in Pottawattamie County at 4:54 pm CDT. It moved north-northeastward at high-end EF1 intensity, producing intermittent damage to the roofs of businesses, homes ...

  9. Corn Belt derecho - Wikipedia

    en.wikipedia.org/wiki/Corn_Belt_derecho

    On Doppler weather radar, a large fast-moving mesocyclone associated of the track of a supercell was nearly in contact with the ground as it moved from southwest Boone County east-southeast across the northern and eastern parts of the Des Moines metro area.