TEMA has information on natural hazards (earthquakes, floods and debris flow, severe weather, etc.) and hazardous materials, including biological and chemical weapons, at http://www.tnema.org
The Department of Safety and Homeland Security divides the state into 11 multicounty homeland security districts that make emergency plans, communicate with residents, and conduct training and drills. For information on this agency, go to http://www.tn.gov
Tennessee utilizes the Emergency Alert System whereby emergency information is broadcast by local radio and television stations. Alerts are also heard on NOAA Weather Radio transmitters, with tornado test messages sent weekly.
TEMA's website posts real-time information on threats to the state on its website at http://www.tnema.org
Counties maintain sirens to warn residents of tornadoes and other emergencies such as dam breaks.
TEMA has also instituted an emergency messaging service that can be targeted to specific geographic areas via ZIP code. Emergency messages can be received via text messaging or e-mail. Sign-up is free, but text messaging charges do apply. To register, go to www.nixle.com
Many counties also have their own mobile alert systems that send warnings via an alert texted to cell ...