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A PX-1000 transportable radar unit operated by University of Oklahoma's Advanced Radar Research Center was used to observe the path of the tornado through Moore, with researchers detailing a "loop" in the path near the Moore Medical Center as a "failed occlusion". [37] EF3 May 28, 2013: Bennington, Kansas — — 264 mph (425 km/h)
NBC Weather Plus primarily competed with cable network The Weather Channel, as well as a similar digital multicast network, The Local AccuWeather Channel.. The network also provided content for both NBC News and MSNBC's programming; [2] Weather Plus staff also appeared on most of the networks’ programs (although Today mainly used certain meteorologists from the network as substitutes for the ...
Doppler weather radar systems can detect mesocyclones within a supercell thunderstorm. This allows meteorologists to predict tornado formations throughout thunderstorms. [108] A Doppler on Wheels radar loop of a hook echo and associated mesocyclone in Goshen County, Wyoming on June 5, 2009. Strong mesocyclones show up as adjacent areas of ...
Scans at different angles by a weather radar. A weather radar sequentially surveys a series of vertical angles over 360 degrees in azimuth. The reflectivity at each of these angles represents the rate of precipitation along a cone that rises away from the radar. Every angle can be seen on a PPI image. However, this rate varies with altitude and ...
In the event that most of the echo is from first surface reflections (^ < or so), the OC radar albedo is a first-order approximation of the Fresnel reflection coefficient (aka reflectivity) [83] and can be used to estimate the bulk density of a planetary surface to a depth of a meter or so (a few wavelengths of the radar wavelength which is ...
Search radar that include pulse-Doppler are usually dual mode because best overall performance is achieved when pulse-Doppler is used for areas with high false alarm rates (horizon or below and weather), while conventional radar will scan faster in free-space where false alarm rate is low (above horizon with clear skies).
The radar horizon is a critical area of performance for aircraft detection systems, defined by the distance at which the radar beam rises enough above the Earth's surface to make detection of a target at the lowest level possible.
Reflectivity radar loop of the supercell thunderstorm that produced the EF3 Springfield tornado. Between 8:18 a.m. and 9:15 a.m. , severe storms producing 1 in (2.5 cm) hail developed over portions of New Hampshire, Massachusetts and Maine; however, little if any impact resulted from these storms. [11]
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