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Wind speed
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===Tornadic=== Wind speeds within certain atmospheric phenomena (such as [[tornado]]es) may greatly exceed these values but have never been accurately measured. Directly measuring these tornadic winds is rarely done, as the violent wind would destroy the instruments. A method of estimating speed is to use [[Doppler on Wheels]] or mobile [[Doppler weather radar]]s to measure the wind speeds remotely.<ref>{{cite news|title=Massive Okla. tornado had windspeed up to 200 mph|url=http://www.cbsnews.com/news/massive-okla-tornado-had-windspeed-up-to-200-mph/|access-date=17 May 2014|newspaper=CBS News|date=20 May 2013}}</ref> Using this method, a mobile radar ([[RaXPol]]) owned and operated by the [[University of Oklahoma]] recorded winds up to {{convert|150|m/s|mph km/h}} inside the [[2013 El Reno tornado]], marking the fastest winds ever observed by radar in history.<ref name="2024RadarPaper">{{cite journal |last1=Lyza |first1=Anthony W. |last2=Flournoy |first2=Matthew D. |last3=Alford |first3=A. Addison |title=Comparison of Tornado Damage Characteristics to Low-Altitude WSR-88D Radar Observations and Implications for Tornado Intensity Estimation |journal=[[Monthly Weather Review]] |date=19 March 2024 |volume=152 |issue=8 |page=1689 |doi=10.1175/MWR-D-23-0242.1 |url=https://journals.ametsoc.org/view/journals/mwre/aop/MWR-D-23-0242.1/MWR-D-23-0242.1.xml |access-date=19 March 2024 |publisher=[[National Oceanic and Atmospheric Administration]] and [[University of Oklahoma]] via the [[American Meteorological Society]]|bibcode=2024MWRv..152.1689L }}</ref> In 1999, a mobile radar measured winds up to {{cvt|135|m/s|km/h mph kn ft/s}} during the [[1999 Bridge Creek–Moore tornado]] in [[Oklahoma]] on 3 May,<ref>{{cite web|url=http://www.spc.noaa.gov/faq/tornado/#History|title=Historical Tornadoes|publisher=National Weather Service}}</ref> although another figure of {{cvt|142|m/s|km/h mph kn ft/s}} has also been quoted for the same tornado.<ref name=worldrecordacademy>{{cite news|title=Highest surface wind speed-Tropical Cyclone Olivia sets world record|url=http://www.worldrecordacademy.com/weather/highest_surface_wind_speed_Tropical_Cyclone_Olivia_sets_world_record_101519.htm|access-date=17 May 2014|newspaper=World Record Academy|date=26 January 2010}}</ref> Yet another number used by the Center for Severe Weather Research for that measurement is {{cvt|135|+/-|9|m/s|km/h mph kn ft/s}}.<ref>{{cite web|last=Wurman|first=Joshua|author-link=Joshua Wurman|title=Doppler On Wheels|publisher=Center for Severe Weather Research|year=2007|url=http://www.cswr.org/dow/DOW.htm|url-status=dead|archive-url=https://web.archive.org/web/20110719102124/http://www.cswr.org/dow/DOW.htm|archive-date=2011-07-19}}</ref> However, speeds measured by [[Weather radar#Velocity|Doppler weather radar]] are not considered official records.<ref name=worldrecordacademy/>
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