Published on March 30, 2026
On Thursday, April 2, at the request of the Texas Division of Emergency Management (TDEM), a statewide test of emergency alerting systems will occur between 10am and 12:30pm. As part of this drill, local jurisdictions across Texas may test systems used to notify the public during emergencies.
Depending on the jurisdiction you are in at the time of the test, you may receive a test alert on your mobile phone and/or hear outdoor warning sirens. Addison plans to test its outdoor sirens on its regularly scheduled testing day, Wednesday, April 1, but will conduct a limited test of its emergency notification system on April 2, at 10am.
Because jurisdictions across the region may participate in this test, you may receive more than one test alert on your phone during the testing window.
This will only be a test. No emergency action is required.
Testing helps ensure emergency alert systems function properly and allows agencies to evaluate how alerts are delivered during real emergencies.