Detroit Plans To Test New Outdoor Warning Siren SystemSirens were originally installed throughout the city more than 35 years ago, but vandalism, copper line theft and closure or demolition of buildings housing the sirens left fewer than 20 in service.
Records: Sirens Activated Only After Tornado On GroundRecords show that sirens weren't activated to notify some Flint-area residents of a tornado earlier this week until after it already was on the ground.
Oakland County To Test Outdoor Warning System WednesdayIf you hear emergency weather warning sirens in Oakland County Wednesday afternoon, don't panic.
Weather Warning Sirens Tested In Oakland CountyOakland County's Outdoor Warning sirens are scheduled to test on the first Saturday of every month. A special test is also being performed on Wednesday, March 30.

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