Tornadoes are most likely occur in Oklahoma between late March and August. However, tornadoes can happen at any time of year in Oklahoma if the weather conditions are right.
Oklahoma is in the region known as Tornado Alley. More tornadoes strike Oklahoma City, the capital of the state of Oklahoma, than any other city in the United States. Some signs that a tornado could be forming include a dark greenish sky, a wall cloud, strong winds, cloud rotation and a loud roaring noise. People can also pay attention to tornado warnings broadcast on the radio and TV. When a tornado forms, people in the area should seek shelter indoors immediately.