Outdoor Warning System

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Siren Testing
The siren system is tested on the first Wednesday of every month at 1:00 PM, weather permitting. If the skies are threatening or if there are storms in the area the test will be cancelled and not re-scheduled until the next month.

Situations For Which the Sirens May be Activated
The sirens are an “all-hazard” warning system, which means they can be activated to warn citizens of a variety of threats in addition to severe weather. This could be anything from a hazardous chemical release to a flash flood. During severe storms the sirens can also be activated in the absence of a tornado if damaging winds in excess of 75 mph have been confirmed in the city. Any threat that poses a danger to the city as a whole or a large section can be cause for activating the sirens.

What do the Sirens Sound Like?
When the sirens are activated either for testing or during a real situation, you will hear a single tone for all events that lasts approximately three minutes per activation. The sirens rotate 360 degrees while activated, so from a given point the sirens will tend to rise and fall as they rotate.

What to Do When You Hear the Sirens
The system is designed as an outdoor warning system only. The sound waves from the sirens aren't designed to penetrate through buildings. The sole purpose of the siren system is to let citizens know they need to take shelter indoors and seek further information on what they should do from radio, television or other sources such as the City's social media feeds or CarrolltonAlert. There is no all-clear signal; if you hear the sirens activate again, treat it as a real emergency and continue to take shelter.  When you hear the sirens please do not call 911 to ask why the sirens are sounding unless you are experiencing a true emergency. Consult news sources and the City’s emergency management twitter feed @CarrolltonEM for more information.

Siren Coverage
The City of Carrollton’s siren system is an important tool to alert citizens to potential threats against life and property. There are twenty-six sirens strategically placed throughout Carrollton to ensure maximum coverage. To view map, click here.

Did you Know?
The siren located at Indian Creek Golf Course is also used to alert golfers when dangerous lightning is in the area. This siren has voice capability; the Indian Creek staff may verbally tell of the possible danger or sound this siren individually. In addition, The City of Carrollton has installed the lightning prediction system at McInnish Sports Complex, R.E. Good Soccer Complex, Josey Ranch Sports Complex, W.J. Thomas Park and Rosemeade Recreation Center. Thor Guard will give one 15-second blast when lightning strikes within a specified area. After the initial 15-second blast, a yellow strobe light on top of the system will begin flashing. This light will remain flashing until safe conditions return. Once lightning is no longer considered to be a safety risk by Thor Guard, the system will provide an “all clear” by giving three 5-second blasts.