What are some common emergency warning sirens?

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.

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.