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The original item was published from 9/7/2018 4:57:37 PM to 10/1/2018 12:00:04 AM.
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Posted on: September 7, 2018[ARCHIVED] Outdoor Warning Sirens - What Do They Mean?
Northbrook operates an outdoor siren warning system throughout the community. The system is intended to provide warning of impending danger, but you may only hear the sirens if you are outside.
Learn what each siren means!