A supercell thunderstrom in Oklahoma. Image courtesy of NSSL/NOAA. The National Weather Service defines a severe thunderstorm as a thunderstorm that is producing: Hail that is at least quarter ...

These secondary tornadoes don’t spin off on their own but are part of the same parent supercell, caught in the chaotic dance of a powerful storm. These satellite tornadoes often appear to orbit ...

The National Weather Service Memphis office said in a post on X, formerly known as Twitter, there is growing concern for a potential supercell in the early afternoon on Friday. "We are focused on ...