Tornado sirens are loud warning systems designed to alert people about severe weather conditions, particularly tornadoes. They are typically installed in communities prone to tornado activity and are activated by local emergency management agencies when a tornado warning is issued. The sound of the siren is meant to be heard outdoors, prompting individuals to seek shelter immediately. These sirens emit a distinctive wailing sound that can vary in tone and duration. In addition to tornadoes, they may also be used for other emergencies, such as severe thunderstorms or hazardous material spills. It is important for residents to understand the meaning of the siren and have a safety plan in place.