A supercell thunderstorm this week produced an Illinois record for largest hailstones. What is the largest hail recorded in ...

At least four tornadoes from a powerful supercell tore across parts of Illinois and Indiana Tuesday, killing two people in ...

Severe storms eyeing the Chicago area Tuesday have the potential to produce supercells, considered to be one of the most ...

Experience the power and beauty of a massive supercell storm in Texas! This storm chasing footage captures dramatic clouds, ...

Intense thunderstorms spawned at least four tornadoes across northern Illinois and northwest Indiana on Tuesday, with at least two killed in Indiana as damage assessments continue.

THREE RIVERS, MI - A spring-like storm turned violent quickly Friday afternoon, spawning at least two tornado touchdowns that ...

Witness a massive supercell storm sweeping across the Texas Panhandle. This stunning storm-chasing footage captures dramatic ...

It's a critical and fascinating process. All hands on deck at the Chicago Office of the National Weather Service, as 10 ...

Eight years ago, a powerful storm system moved through the Southeast, producing severe storms. The combination of daytime ...

Lakes that were still ice-covered and a record-breaking 76-degree day: How extreme conditions fueled deadly tornadoes in ...

(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 ...

Thursday was a big day for storm chaser Dan Fitts , who clocked winds of 98.4 mph near Chugwater. Fitts has spent three ...