The most common emergency warning sirens are for tornadoes, hail and wind. Places such as school campuses also use emergency warning signs during events such as a shootings or natural disasters.Continue Reading
For weather-related emergencies, sirens generally sound in a cycle of three-minutes-on and seven-minutes-off, until the weather warning expires and the threat of danger has passed.
If an emergency siren is activated, it is important to seek shelter immediately inside a sturdy structure, in an interior room and away from windows. Sirens are usually tested during tornado season on a regular basis. Local county offices or media have access to testing schedules.Learn more about Government & Politics