Unusual Facts About Thunderstorms - as part of the expert series by GeoBeats. Besides the usual thunder, lightning, high winds and rain, thunderstorms can produce hail, flash flooding, and even tornadoes. Lightning from a thunderstorm can strike anywhere, even around the edges of the storm, including outside of rainfall. There are around 100,000 thunderstorms in the United States every year, more of them occurring in Florida than anywhere else. Worldwide, there is an average of nearly two thousand thunderstorms occurring together at any given time. Thunderstorms develop more frequently in warm and humid conditions, such as are often found in the southern United States.
