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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.
A rough map of the three warning lines. From north to south: the Distant Early Warning (DEW) Line, Mid-Canada Line, and Pinetree Line. The Distant Early Warning Line, also known as the DEW Line or Early Warning Line, was a system of radar stations in the northern Arctic region of Canada, with additional stations along the north coast and Aleutian Islands of Alaska (see Project Stretchout and ...
Weather radar, also called weather surveillance radar ( WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.). Modern weather radars are mostly pulse-Doppler radars, capable of detecting the motion of rain droplets in addition to the intensity of the ...
A storm on AccuWeather meteorologists' radar for over a week will gain strength and size as it rolls from the southwestern United States to the Great Lakes region through Tuesday. As it does ...
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 ...
A map shows the temperature departures from historical average across the U.S. Temperatures will be above the historical averages across many northern areas of the United States this winter.
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 ...
The Canadian weather radar network consists of 33 weather radars spanning Canada's most populated regions. Their primary purpose is the early detection of precipitation, its motion and the threat it poses to life and property. Each had until 2018 a range of 256 km (159 mi) in radius around the site to detect reflectivity, 3 angles with a range ...
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