outdoor warning system

A Message from Civil Defense-Emergency Management...

Lavon Fire Department operates a system of two high-powered outdoor warning sirens located within city limits. This system is designed to be heard exclusively by those engaging in outdoor activity. The sirens are not designed to be heard indoors, and should never be considered a primary means of receiving emergency notification. If you are outdoors and hear the sirens, immediately seek shelter and further information. Tune to local TV, radio, or Lavon Fire social media for more information about the emergency and actions you should take. While many people consider these as "tornado sirens," our system can be used for a variety of events, with the most common being:


  1. A Tornado Warning is issued for Lavon or the immediate area; or a qualified Lavon first responder or trained weather spotter reports a tornado in progress.
  2. A Severe Thunderstorm Warning is issued for Lavon with the primary threats being damaging hail greater than 1.25" or damaging winds in excess of 70MPH.
  3. A hazardous materials release incident where conditions are expected to become unsafe for outdoor activity.
  4. Any natural or civil disaster as deemed necessary by Civil Defense-Emergency Management or FD Command.


We have aligned our siren policy to reflect those of our neighboring cities, and many other communities which adhere to criteria established by the North Central Texas Council of Governments.


You can learn more about emergency warning methods and preparedness at  https://knowhat2do.com/  


The Outdoor Warning System is tested monthly on the first Wednesday at 12:00 P.M. If threatening weather is present or forecast during test times, the system will not be tested audibly. 

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