Outdoor Warning Sirens

This page is brought to you by the Emergency Managers in the North Central Texas Region with the cooperation of the National Weather Service and the North Central Texas Council of Governments. The purpose of this site it to educate viewers on Outdoor Warning Systems and provide links to policies that cover the jurisdiction in which they live or work.

Outdoor Warning System (OWS)

The Outdoor Warning Systems are known by many as “tornado sirens” or just “sirens”. However, it is important to understand that the Outdoor Warning System is designed for all hazards. As the name implies, the system is designed for people that are outdoors. Those that are indoors may not be able to hear the OWS for various reason (radio or television is on, vacuum cleaner going, etc.). The OWS should only be used as a supplemental warning tool for individuals. OWS can be used to alert citizens of tornadoes, hail, hazardous material incidents, civil emergencies, and any other impending hazard that could adversely affect the lives and property in the general vicinity.

When an Outdoor Warning System is activated, remain calm and go to safe shelter indoors. Then, tune into your NOAA All Hazards Radio or local television or radio for further instructions. Remain indoors until the emergency has ended.

For more details on the OWS activation criteria for your community, please see below and click on the respective link for your community. If unable to locate jurisdiction here, please refer to your jurisdictions website for further information.

Outdoor Warning System Framework 

Addison Aledo Allen Alvarado Arlington
Azle Bedford Burleson Carrlloton Cedar Hill
Cleburne Colleyville Coppell Dallas Denton
Denton County DeSoto Duncanville Euless Farmers Branch
Flower Mound Fort Worth  Frisco Garland Glenn Heights
Grapevine Grand Prairie Haltom City Highland Park Highland Village
Hurst Irving Keller Lake Cities Lancaster
Lewisville Little Elm  McKinney Mesquite Murphy
Navarro County North Richland Hills Plano Richardson Rockwall
Rowlett Seagoville Southlake Terrell The Colony 
University Park Waxahachie Westlake Wylie