Add Yahoo as a preferred source to see more of our stories on Google. A supercell thunderstorm rolls through Ulysses, Kansas, in May 2020. - Mark J. Rebilas/USA Today Network/Imagn Images Supercell ...
(CNN) — Supercell thunderstorms are dangerous severe storms that unleash destructive hail, roaring winds and powerful tornadoes. They are responsible for nearly all of the United States’ most violent ...