Tuesday, November 19, 2019
Isabella County Community Development

Early Warning Information

Early Warning Siren locations and tones

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



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.

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Report a non-working siren

Please include location and date in e-mail

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Emergency Alert Radio System

Residents and visitors can tune to AM 1610 on their radio dial to keep informed of needed emergency information anytime day or night.

More information...