Genesee County Siren Testing

Thank you for your interest in the Genesee County Siren Testing Program

Siren Testing has been an important service provided by the amateur radio community since 1979. Even though siren technology has changed over the years, we still provide ground truth observations important to protecting our communities during severe weather events.

As volunteers, our responsibility is to report siren observations to the Genesee County Office of Emergency Management. Maintenance and repair of any malfunctioning sirens is the responsibility of the local municipality.

Everybody is welcome to participate!

You do not have to be a member of GCARES or a licensed amateur radio operator to report a siren. We appreciate reports from anybody.

If you cannot send a report in via radio, feel free to email your report to

Testing Schedule for 2023

Month Date Note

Testing Information

Information to Observe and Report

Outdoor warning sirens are used to alert residents who may be outdoors when a Tornado Warning is issued by the National Weather Service.

The sirens are not intended to alert people indoors. It is highly recommended that each residence, business, school and church have a NOAA All-Hazard Radio that will automatically activate during severe weather and hazardous materials events. More information on NOAA Weather Radios in South East, Michigan can be found at the Detroit / Pontiac National Weather Service Website.