Drivers were left stranded in their cars after a 'supercell' storm transformed roads into rivers ... In the northeast of ...

It's the nation's most serious severe threat since July. Here's what you need to know about this outbreak forecast.

Spring's warm temperatures fueled storms in late April, causing large supercell storms for much of the Great Plains states which caused more than multiple tornadoes, according to NOAA. The water ...

Giant supercell thunderstorm terrified residents as it made its way across the High Plains in Nebraska Incredible shots were taken just a day after a team of photographers captured footage of ...

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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 ...