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Strong mesocyclone on a thunderstorm near Tuscaloosa, Alabama, that was analyzed as fitting the characteristics of a TVS.It was associated with a tornado.. A tornadic vortex signature, abbreviated TVS, is a Pulse-Doppler radar weather radar detected rotation algorithm that indicates the likely presence of a strong mesocyclone that is in some stage of tornadogenesis. [1]
Airborne pulse-Doppler radar antenna. A pulse-Doppler radar is a radar system that determines the range to a target using pulse-timing techniques, and uses the Doppler effect of the returned signal to determine the target object's velocity.
Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. 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.).
When the rain starts to fall, people immediately look to the weather radar to see how long it will last. But when severe weather strikes, meteorologists can use this technology to pinpoint the ...
Tornadoes can be detected before or as they occur through the use of pulse-Doppler radar by recognizing patterns in velocity and reflectivity data, such as hook echoes, as well as by the efforts of storm spotters. There are several different scales for rating the strength of tornadoes.
A Doppler on Wheels observed this tornado. This was the third of three tornadoes observed by the Doppler on Wheels near Crowell, Texas on April 30, 2000. [22] F1 April 30, 2000: Oklaunion, Texas — — — A Doppler on Wheels observed this F1 tornado. [23] F2 May 29, 2004: Geary, Oklahoma — — 181 mph (291 km/h)
[8] [9] Tornadoes can be detected before or as they occur through the use of pulse-Doppler radar by recognizing patterns in velocity and reflectivity data, such as hook echoes or debris balls, as well as through the efforts of storm spotters.
The National Weather Service issued the rare alert when Doppler radar indicated rotation inside a strong thunderstorm that was heading for more than 1 million people in downtown San Francisco just ...
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