Sound tests will not be conducted if there is a severe weather watch or warning in effect for Hall County. The tornado sirens are tested using the wail alert tone once every three months. Other than these previously announced tests, all sirens should be considered to be an actual tornado warning. The sirens will sound for about three minutes.
The system is tested silently every morning at 9:00.
Meanwhile, county officials will also test their emergency mass notification system Wednesday morning. The Hall County Citizen's Alert System notifies residents about severe weather, fires, floods, toxic environmental issues and in-process violent crimes within minutes. Messages can be sent to individuals using a variety of contact mechanisms - cell phone, landline, email, text messaging and more.
People listed in the County's 911 database have been automatically subscribed to alerts by landline, though any individual may self-register, provide additional contact information or opt out. To sign up or learn more, log onto alerts.hallcounty.org.
Weather siren
http://accesswdun.com/article/2013/8/264676