A severe weather system rolled through central Oklahoma on April 19, 2023, producing supercell thunderstorms that yielded at least 18 tornadoes. From observations, to modeling to post-storm damage assessment, NSSL researchers gathered comprehensive data and put their cutting edge research to the test on storms in their own backyard. 

Fifty years ago, on May 24, 1973, a violent F-4 tornado tore through the central Oklahoma town of Union City, killing two people and injuring at least four more. While the human impact of the storm was devastating, the Union City tornado was also historic as it marked the first time researchers were able to use radar to observe the entire lifecycle of a tornado.