The same storm produced baseball-sized hail. The rotating thunderstorm churned over entirely empty prairie lands.

Supercells can produce strong winds, heavy rains, hail and even tornadoes and are often recognizable by their anvil-shaped storm clouds, according to the National Weather Service. “Pecos County ...

The anvil can tell us everything from age to strength and ... This feature can persist in a steady-state supercell thunderstorm for many hours, or may be present for a short time during a new growth ...

Supercells are the mightiest of the thunderstorms. They can roll for hours while maintaining tornadoes and damaging hail. Here's what you should know.

A supercell thunderstorm, which brought almost hurricane-force straight-line winds, was responsible for a 300-mile swath of damage across northern Maryland and southern Pennsylvania on Saturday ...