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 m ...

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 ...

On March 10, 2026, a powerful supercell thunderstorm in Kankakee, Illinois, produced extremely large hail. The stones were up to 5–6 inches in diameter (roughly the size of softballs). If confirmed, ...

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.

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

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

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

In about 15 minutes, Tempe recorded nearly three-quarters of an inch of rain. A supercell thunderstorm forms when wind speed and direction change with height, a phenomenon called wind shear.

The very large hail fell from a supercell in Kankakee, Ill. on March 10, 2026 ...

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