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 ...

A new chapter for First Alert Storm Command began in 2024, and our wild Oklahoma weather didn't hold ... but so did our new Supercell Tracking F-250 Super Duty Storm Command.

The storm is moving east toward Okarche. The warning is active until 9:45 p.m. This is the supercell that will move into the ...

Reflectivity of the supercell that produced the Moore, Oklahoma tornado on May 3, 1999. At the time of this radar scan, a tornado was on the ground. Image courtesy NWS. A tornado is a violently ...