A tornado is an element of a thunderstorm. It cannot occur without one. It is a consequence of the up-draft of the thunderstorm starting to rotate. read more
Tornadoes are far more devastating than thunderstorms, because of two factors. One is their wind speed. The strongest tornadoes have winds of up to 300 mph, and can completely flatten everything in their path. read more
Oklahoma City has been hit more often by tornadoes than any other U.S. city, with a known total now of more than 100 strikes. More tornadoes have actually touched down in Florida than in Oklahoma, but the ones that strike Florida are generally much weaker systems. read more