Tornadoes are localized, violently destructive windstorms characterized by a funnel-shaped cloud extending to the ground. They most commonly occur in the central United States, forming from thunderstorms when hot and cold air mix. Tornadoes can be classified as either water-supported or land-supported, with land-supported tornadoes causing more damage upon contact with the ground. Tornadoes pose serious risks, as they are capable of causing significant property damage, injuries, and loss of human life.