The Ottawa County Emergency Management monthly siren test will occur in certain areas on Friday.
It will not be held in the city of Grand Haven and Grand Haven Township due to the Coast Guard Festival.
The siren will sound at noon in the following Tri-Cities communities: Spring Lake and Ferrysburg; and Spring Lake, Robinson and Crockery townships. The test will also be conducted in other Ottawa County communities outside the Tri-Cities.
The siren sound consists of a steady tone of 1-3 minutes.