Outdoor activities where you are tallest thing around like fishing, golf, boating contribute. Along with large population.
But , 7 out of 8 cities with most thunderstorms in US are in florida. Its thunderstorm central. Has something to do with it.
This says it all
visalia2.jpg
The most incredible lightning show i ever saw was at a lake i was fishing on in fla in hs. Storm ran me off water and i sat in truck. For 45 light rain min it crackled across sky, linked up with other streamers, etc. It was awesome from a safe place . Like scenes from movie. In 35 yrs ive never seen another like it.