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A tornadic debris signature (TDS), often colloquially referred to as a debris ball, [1] is an area of high reflectivity on weather radar caused by debris lofting into the air, usually associated with a tornado. [1] [2] A TDS may also be indicated by dual-polarization radar products, designated as a polarimetric tornado debris signature (PTDS).
Storm spotters are trained to discern whether a storm seen from a distance is a supercell. [8] They typically look to its rear, the main region of updraft and inflow. [8] Under the updraft is a rain-free base, and the next step of tornadogenesis is the formation of a rotating wall cloud. The vast majority of intense tornadoes occur with a wall ...
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]
WDRB (channel 41) is a television station in Louisville, Kentucky, United States, affiliated with the Fox network. It is owned by Block Communications alongside Salem, Indiana –licensed dual CW / MyNetworkTV affiliate WBKI (channel 58).
Vertical cross-section through a supercell showing the BWER. The bounded weak echo region, also known as a BWER or a vault, is a radar signature within a thunderstorm characterized by a local minimum in radar reflectivity at low levels which extends upward into, and is surrounded by higher reflectivities aloft, forming a kind of dome of weak echoes.
In 1962 a research team from the United States Weather Bureau's National Severe Storms Project (NSSP) moved from Kansas City, Missouri to Norman, Oklahoma, where, in 1956, the Cornell Aeronautical Laboratory had installed a 3 cm continuous-wave Doppler Weather Surveillance Radar-1957 . This radar was designed to detect very high wind speeds in ...
Wurman and his team developed the DOW radars, a new concept of mobile radar, used to observe tornadoes, tropical cyclones, wildfires, [11] winter storms, and other phenomena from close range. He built the first DOW in 1995 from spare parts from NCAR and other facilities and as of March 2014 has built eight DOW units. [ 12 ]
The second planned project is the Bistatic Adaptable Radar Network (BARN) which will be integrated with existing DOWs and the COW to provide high resolution wind vector observations without the need for multiple, expensive transmitters. These bistatic receivers will consist of small antennas that can be deployed like Pods or mounted onto a ...