Sirens

In the event of severe weather, sirens are activated by the Lyons Township Area Communications Center (LTACC). The sirens are most commonly used to alert residents to the issuance of a tornado warning by the National Weather Service (NWS). Trained severe weather spotters and public officials are responsible for providing timely and accurate reports of severe weather in our area to the NWS.

When sirens are activated, residents will hear them as a steady signal which lasts for three minutes. Everyone should seek shelter immediately in any interior room, bathroom, or closet, if available. Outside walls and windows should be avoided. If you have access to a radio or television, tune to a local channel for essential emergency information. It should be noted that sirens are activated only to provide emergency alerts to residents. No all-clear activations of sirens will be made.

Testing

The Village’s severe weather siren system is tested on the first Tuesday of every month at 10 a.m. weather permitting. LTACC will not test the sirens if weather is severe or threatening to avoid confusion as to whether the activation is a test or a real alert.