Warning sirens are loud, attention-grabbing devices used to alert people about emergencies. They are commonly found in cities and towns and can signal various dangers, such as severe weather, natural disasters, or other urgent situations. The sound of a warning siren is designed to be heard over long distances, ensuring that as many people as possible receive the alert. These sirens can be activated by local authorities, such as emergency management agencies or police departments, and often have different tones or patterns to indicate specific types of emergencies. For example, a steady tone might signal a tornado warning, while a wailing sound could indicate a civil emergency.