Grand Rapids residents, take note: You may hear outdoor warning sirens at noon on the first Friday of every month, even during the winter. There’s no need to panic if it’s a scheduled test.
Beginning Friday, Nov. 6, the City of Grand Rapids will begin year-round testing of its upgraded outdoor warning siren system, replacing the previous April-through-October schedule. Because emergencies don’t take the winter off, neither should the systems designed to warn residents about them.
The upgrade uses geofencing mapping technology to activate sirens within one mile of a threat area identified by the National Weather Service. This allows emergency officials to target neighborhoods most at risk, improving alert accuracy and reducing unnecessary activations in areas outside the threat zone.
The sirens may be activated for any outdoor threat that poses an immediate danger, such as tornadoes, destructive thunderstorms, or other fast‑moving hazards. Tests and real‑world activations sound a steady, high-pitched tone for three minutes. The sirens are a signal for anyone outdoors to seek shelter immediately. Once safely inside, residents should check a weather app, City of Grand Rapids and Office of Emergency Management social media channels, television or radio for details on the threat and take appropriate action until the threat has passed.
“This upgrade significantly improves reliability of the outdoor warning sirens,” said Communications Manager Reed Wakeman. “This change improves the notification time and offers targeted alerts for those who could be in danger.”
Siren activation is managed by the Grand Rapids Emergency Communications Center. The system has full redundancy, allowing both Kent County and the City to perform activations of each other’s sirens when needed. Multiple transmitters also strengthen the system and help maintain coverage during severe weather. Grand Rapids currently operates 27 outdoor warning sirens across the city.
“This upgrade gives us a more accurate and dependable system,” Emergency Management Administrator Benjamin Rance said. “As a warning moves or changes, the system can adjust which sirens are activated. This means residents miles away from a hazard may no longer hear repeated siren activations simply because they live within the same large activation zone. It helps us match alerts to real‑time conditions so people can act quickly and stay safe.”
Because outdoor warning sirens are not designed to be heard indoors, residents should use additional alert tools to stay informed. The City encourages everyone to sign up for Grand Rapids Emergency Alerts and learn more about the siren system, testing schedule and safety information on its Outdoor Warning Sirens webpage.
