Isabella County Emergency Management (EOC) -
Emergency Early Warning Sirens
Early Warning Siren locations and tones
Report a non-working siren
Please include location and date in e-mail
Isabella County has 29 outdoor warning sirens located throughout the county. The purpose of these sirens is to warn the public of impending disasters or emergencies. The sirens will be activated immediately to warn the public of an emergency situation. These sirens notify the public to go inside and turn on the radio or television for further information.
All Isabella County Outdoor Warning Sirens are tested the 1st Thursday of every month at 3:00 pm. For further information on locations and to hear siren tones click here.
The outdoor warning system utilizes two distinctively different siren signals:
- The "Seek Shelter Signal" is a siren that slowly increases to a steady sound lasting 3 to 5 minutes
- The "All Clear Signal" is an intermittent air horn sound, also lasting 3 to 5 minutes
When testing the sirens each month, we first sound the seek shelter signal, then the all clear signal.
Please remember:
Do not telephone 911 or local agencies: it's important
to leave telephone lines open for emergency communication.
Steps to follow when you hear a siren:
- Immediately turn on your NOAA weather radio if it hasn't already been activated.
- Immediately tune to a local radio station or the local cable television station.
- Listen for emergency messages.
- Follow instructions.
- Stay tuned for further updates.