Lightning strikes the United States about 25 million times a year. Although most lightning occurs in the summer, people can be struck at any time of year. Lightning kills 20 or more people in the United States each year, and hundreds more are severely injured, according to NOAA’s National Weather Service.
Florida has more thunderstorms than any other area of the United States. Thunderstorms affect relatively small areas when compared to hurricanes, but they occur much more frequently. The typical thunderstorm is 15 miles in diameter and lasts an average of 30 minutes. Nearly 1,800 thunderstorms are occurring at any moment around the world.
Despite their small size, all thunderstorms are dangerous. Every thunderstorm produces lightning. Heavy rain from thunderstorms can lead to flash flooding. Strong winds (straight-line winds or downbursts), hail and tornadoes are also dangers associated with some thunderstorms.