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A map of the meteorological setup of the 1999 Oklahoma tornado outbreak.The map displays surface and upper level atmospheric features associated with the outbreak. The Bridge Creek–Moore tornado was part of a much larger outbreak which produced 71 tornadoes across five states throughout the Central Plains on May 3 alone, along with an additional 25 that touched down a day later in some of ...
While one crew went to deploy a pod of observational instruments in the direct path of the tornado for data collection, another, operating with a Doppler on Wheels (DOW) portable radar unit arrived in Greenfield at 3:30 p.m. and stationed themselves roughly 300 yd (270 m) away from the ultimate path of the tornado around 1 mile east of the ...
While never observed, these tornadoes are believed to have had winds of 300 miles per hour (480 km/h) or above, which would make them among the strongest tornadoes in history. There is a questionable analysis of the 1917 Mattoon/Charleston tornado [ f ] published in the Geographical Review in 1917 that stated the tornado had strong "inflowing ...
At times, multiple vortices swirled within the tornado, which lasted for about 45 minutes and traveled about 44 miles. For less than a second, the researchers calculated wind speeds of more than ...
With up to 140-mph winds, and spanning 200 to 300 yards (two to three times the length of a football field) in width at times, the tornado likely traveled more than 30 miles in Palm Beach County ...
The very strong tornado – modern meteorologists estimate that its wind speeds topped 300 miles per hour (480 km/h) in some locations – at times exhibited an unusual appearance due partially to its size (at one point in Missouri, it was a full mile and a half wide) and the probable low cloud base of its parent thunderstorm. [47] [48]
As the Dominator 3 approached the tornado, video captured by Timmer showed the roaring size of the tornado along the Nebraska Sandhills. Storm Chaser Jordan Hall was in the vehicle with Timmer as ...
Tornado damage in Moore the following day, on May 21. In the afternoon hours of May 20, 2013, a large and violent EF5 tornado would again strike Moore, Oklahoma. The tornado had peak winds estimated at 210 miles per hour (340 km/h), killing 24 people (plus two indirect fatalities) [59] and injuring 212 others. [60]