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 ...

A clap of thunder can come as a surprise in the steady calm of falling snow. Here’s what causes it. By Camille Baker The major storm sweeping ice, snow and sleet across the Eastern United States this ...

More than 230 million people across the United States are at risk this weekend of impacts from a major winter storm or the bitter cold, according to the National Weather Service. Disruptive snowfall ...