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KCRA-TV (channel 3) is a television station in Sacramento, California, United States, affiliated with NBC. It is owned by Hearst Television alongside Stockton -licensed dual CW / MyNetworkTV affiliate KQCA (channel 58). The two stations share studios on Television Circle off D Street in downtown Sacramento; KCRA-TV's transmitter is located in ...
KETV was the first station in the market to have a full-time meteorologist beginning in the early 1970s, the first station to use live weather radar in the late 1970s, and was the second station to utilize Doppler weather radar in the early 1980s. In November 2006, KETV overtook long-time ratings leader WOWT to become the top-rated news station ...
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 ...
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 on Wheels (or DOW) is a fleet of X-band and C-band mobile and quickly-deployable truck-borne radars which are the core instrumentation of the Flexible Array of Radars and Mesonets [1] affiliated with the University of Illinois [2] and led by Joshua Wurman, with the funding partially provided by the National Science Foundation (NSF), as ...
Continuous-wave radar ( CW radar) is a type of radar system where a known stable frequency continuous wave radio energy is transmitted and then received from any reflecting objects. [1] Individual objects can be detected using the Doppler effect, which causes the received signal to have a different frequency from the transmitted signal ...
A NEXRAD weather radar currently used by the National Weather Service (NWS) is a 10 cm wavelength (2700-3000 MHz) radar capable of a complete scan every 4.5 to 10 minutes, depending on the number of angles scanned, and depending on whether or not MESO-SAILS is active, which adds a supplemental low-level scan while completing a volume scan. Its ...
July 17, 2024 at 3:45 PM. CNN Weather. Dangerous flash flooding in Arkansas and Missouri forced evacuations and washed out at least one bridge after months of rain fell in just a few hours ...