2013-05-21 (IPMA)
Yesterday, the city of Moore, located in the metropolitan area of Oklahoma City (the North American state of the same name), was hit by a tornado.
This phenomenon, provisionally classified by the Meteorological Service of the United States of America (USA) as an EF4 tornado level (according to the Enhanced Fujita Scale), produced instantaneous maximum wind (gust, 3s) between 267 and 322 km / h.