The City of Milan has weather warning sirens, which are designed to warn citizens of tornado warnings. The sirens will only be sounded when a tornado has been spotted in the county and could be potentially a threat to the City of Milan. When the sirens are activated, people are advised to take cover and remain in a place of safety, (basements, rooms without alot of windows, etc.) until conditions improve.
To avoid confusion, there is NOT an "All Clear" siren sounded. You must use your own judgement, or listen to a radio for further information and updates.