Texas will conduct a statewide test of its emergency alert systems on April 2 from 10 a.m.-12:30 p.m. You may receive a test alert on your phone, radio or television depending on your device settings and may hear outdoor warning sirens depending on your location at the time of the test. Since multiple entities will participate, you could receive more than one test alert during the testing window. Please do not disable emergency alerts on your phone. These alerts provide important information that can help keep you and your family safe. 

This is only a test. No emergency action is required. 

Testing helps ensure emergency alerts work when they are needed most. The City of Richardson will test its siren system on Wednesday, April 1st, at noon, weather permitting, in accordance with the regular test schedule. 

Website: https://tdem.texas.gov/press-release/3-18-26-drill