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Website. www .wandtv .com. WAND (channel 17) is a television station licensed to Decatur, Illinois, United States, serving the Central Illinois region as an affiliate of NBC. Owned by Block Communications, the station maintains studios on South Side Drive in Decatur, and its transmitter is located along I-72, between Oreana and Argenta .
Doppler Radar imagery of the Washington, IL tornado, showing a debris ball on reflectivity with a deep correlation coefficient. Entering Devonshire Estates, the tornado maintained high-end EF4 intensity, leveling or sweeping away another row of homes on Coventry Dr while traveling northeast at around 65 mph, four rows of homes on Holborn Ct ...
In 1974 another radar was installed in Marseilles greatly improving the radar coverage in Central Illinois. A new radar, WSR-74C, was installed in Moline and helped the Peoria NWS issue severe weather warnings for the region. In 1980 the Springfield office received a WSR-74C radar system to use for local warning operations.
WSR-74. WSR-74C radar from Central Illinois WFO. WSR-74 radars were W eather S urveillance R adars designed in 1974 for the National Weather Service. They were added to the existing network of the WSR-57 model to improve forecasts and severe weather warnings. Some have been sold to other countries like Australia, Greece, and Pakistan.
The 1990 Plainfield tornado was a devastating tornado that occurred on the afternoon of Tuesday, August 28, 1990. The violent tornado killed 29 people and injured 353. [1] It is the only F5/EF5 rated tornado ever officially recorded in August in the United States (unofficially the 1883 Rochester, Minnesota cyclone is considered an F5), and the only F5 tornado to strike the Chicago area.
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 ...
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 ...
A pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity. It combines the features of pulse radars and continuous-wave radars, which were formerly separate due to the complexity of the electronics .
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