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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 ...
In addition to its main studios, WGAL operates bureaus in Harrisburg (on Market Street) and York (on South George Street a.k.a. BL I-83/Susquehanna Trail). The station operates the area's only live weather radar at its transmitter site known as "Super Doppler 8". As the only VHF station in the area, it has been the market leader for many years.
42-36816. Website. www.indianaboro.com. Indiana is a borough in and the county seat of Indiana County, Pennsylvania, United States. [3] The population was 14,044 at the 2020 census. [4] It is the principal city of the Indiana, Pennsylvania micropolitan area, about 46 miles (74 km) northeast of Pittsburgh. [5]
Pennsylvania (/ ˌpɛnsɪlˈveɪniə / ⓘ PEN-sil-VAY-nee-ə, lit. 'Penn's forest country'), officially the Commonwealth of Pennsylvania[b] (Pennsylvania Dutch: Pennsilfaani), [7] is a U.S. state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.
Moving target indication (MTI) is a mode of operation of a radar to discriminate a target against the clutter. [1] It describes a variety of techniques used for finding moving objects, like an aircraft, and filter out unmoving ones, like hills or trees. It contrasts with the modern stationary target indication (STI) technique, which uses ...
A sharp increase in the annual average E/F0–1 count by approximately 200 tornadoes was noted upon the implementation of NEXRAD Doppler weather radar in 1990–1991. [ 39 ] [ note 1 ] 1974 marked the first year where significant tornado (E/F2+) counts became homogenous with contemporary values, attributed to the consistent implementation of ...
Harrisburg's site along the Susquehanna River is thought to have been inhabited by Native Americans as early as 3000 BC. Known to the Native Americans as "Peixtin", or "Paxtang", the area was an important resting place and crossroads for Native American traders with trails leading from the Delaware to the Ohio rivers and from the Potomac to the Upper Susquehanna intersecting there.