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Juan Buitrago, Knoxville News Sentinel January 14, 2024 at 5:04 PM A winter storm warning is in effect for Knoxville and much of East Tennessee from 7 p.m. EST until 6 a.m. Tuesday.
Get the Knoxville, TN local weather forecast by the hour and the next 10 days.
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 ...
WLLX (97.5 FM) is a Class C2 FM radio station serving the southern Tennessee area. The station was one of the first in the nation to own and operate a live, color weather radar system and distribute the images to its listeners via a subcarrier on the primary FM signal.
The current office in Memphis maintains a WSR-88D (NEXRAD) radar system, and Advanced Weather Interactive Processing System (AWIPS) that greatly improve forecasting in the region. Memphis is in charge of weather forecasts, warnings and local statements as well as aviation weather. The name of the Doppler weather radar (WSR-88D) used by this ...
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The scale of dBZ values can be seen along the bottom of the image. dBZ is a logarithmic dimensionless technical unit used in radar.It is mostly used in weather radar, to compare the equivalent reflectivity factor (Z) of a remote object (in mm 6 per m 3) to the return of a droplet of rain with a diameter of 1 mm (1 mm 6 per m 3). [1]
A Doppler radar is a specialized radar that uses the Doppler effect to produce velocity data about objects at a distance. [1] It does this by bouncing a microwave signal off a desired target and analyzing how the object's motion has altered the frequency of the returned signal.