- For the NHL team, see Tampa Bay Lightning
- For the World War II fighter, see P-38 Lightning
Lightning is a very powerful electrical discharge made during a thunderstorm. The electric current makes the air very hot. The suddenly heated air expands very quickly, which causes thunder. Sometimes lightning happens between clouds. Sometimes (in the rain) lightning goes from cloud to ground. If it goes from cloud to ground, it can strike a person. Around 2000 people are struck by lightning each year. A few of them are not killed.About 50 to 100 lightning bolts strike the Earth every second. Lightning has hit the Empire State Building as many as 500 times a year.
Lightning usually hits the tallest structure.