Consumers Energy will be testing its emergency public warning siren systems near its Rogers, Hardy and Croton hydroelectric generating plants on the Muskegon River Wednesday, August 16 at approximately 9:30 a.m. 

The test will include a voice message, a 30-second siren and a second voice message.

The public does not need to take any action during the tests.

The siren systems are tested each August and December.