Tornados are dangerous weather events that form when hot and cold air masses collide. They can travel up to 300 miles and vary in width, with some being very thin while others are quite wide. Tornados are capable of causing floods, breaking buildings, and sparking lightning. They most commonly occur in the central United States and can last up to 50 minutes, though tornados have been known to happen in various locations. In conclusion, tornados are considered a dangerous occurrence.