Warning Sirens

The City of Terrell through its Office of Emergency Management maintains a system of Outdoor Warning Sirens as part of a comprehensive warning plan to notify citizens of potential or imminent dangerous situations. The system was designed to warn people who are outside of their residences and businesses, of a potential or imminent situation that could be dangerous to their health and safety. The sirens are helpful if you are in your yard, jogging, enjoying the amenities of the Terrell Parks system, or playing golf to name just a few activities. They are not designed to be heard inside homes and businesses, but if you can hear them, that’s an added benefit.

The Outdoor Warning Sirens are tested on the first Wednesday of each month at 1 pm, weather permitting. They will not be tested if there are conditions that would lead one to believe there could be severe weather in the area if not in actuality. Should the weather conditions preclude the testing of the sirens on the first Wednesday of the month, the test will be postponed until the next clear weather day. Most cities in the North Central Texas region conduct Outdoor Warning Siren tests in the same manner and follow the same guidelines.

Please do not call 911 to ask the reason the sirens are sounding. If the weather is looking bad, please move indoors to a place of safety. The Emergency Alert Telephone Contact System will be calling to let residents know the nature of the warning. Please prepare yourself and your family beforehand.


Information may be found via the National Weather Service or at the American Red Cross.

Contact Us

If you have any questions concerning the Outdoor Warning Siren System please contact the Terrell Office of Emergency Management.