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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 ...
North Warning System. The North Warning System (NWS, French: Système d'alerte du nord) is a joint United States and Canadian early-warning radar system for the atmospheric air defense of North America. It provides surveillance of airspace from potential incursions or attacks from across North America's polar region.
Get the Boydton, VA local weather forecast by the hour and the next 10 days.
Minimal Minimal. Low Low. Moderate Moderate. High High. Very High Very High. As reported from WebMD Data and Symptom Checker. Slideshow. See how widspread seasonal allergy activity is in your area.
Radars measure the velocity of objects in the atmosphere relative to the radar site. Rotation can be detected when there is a couplet of winds moving toward and away from the radar located right ...
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