Supercells are the mightiest of the thunderstorms. They can roll for hours while maintaining tornadoes and damaging hail.

Temperatures in Southern Ontario may reach 30°C, the first of the year, as thunderstorms loom, bringing potential hazards ...

The Sunday tornado near Ashby has set a record as the widest tornado ever surveyed in the North Platte National Weather ...

A dramatic supercell thunderstorm erupted south of San Antonio, Texas, captured in stunning high-resolution satellite imagery. Supercells are rare but dangerously powerful storms, capable of spawning ...

A supercell made for an ominous light show in south Oklahoma on Monday, April 28, as a tornado warning and severe ...

The National Weather Service says supercell thunderstorms are possible April 28 in central Wisconsin with golf-ball size hail ...

Fayette County Sheriff Ronnie Stevens confirms several buildings suffered significant damage with numerous trees toppled as well. Stevens reported there were no injuries from the storm. The National ...

The weather service said there is a potential for hail to be baseball-sized or even larger for several hours after sunset.