Grand Blanc Township Michigan Homepage
  1. 5371 South Saginaw Street

  1. Grand Blanc, MI 48507

  1. Phone: 810-424-2600

Weather Sirens

Weather sirens are strategically placed throughout the community so that they are heard if severe weather is approaching. If the sirens are activated, be sure to seek cover and if possible have a radio or television near your shelter to listen for current weather conditions.

Central dispatch activates the county weather sirens, testing them on the first Saturday of March through October at 1 pm. The siren sounds, first for severe weather and the second for citizens' security.

When the sirens activate, they will sound for 3 minutes. 

When there is a real threat, the sirens sound at the moment the NWS issues the warning and the sirens sound for 2 minutes, then 8 minutes later they are set off again. This continues every 10 minutes until the warning expires set by the NWS. 

2026 Outdoor Warning Siren Test Schedule:

  • March 7th
  • April 4th
  • May 2nd
  • June 6th
  • July 4th 
  • August 1st
  • September 5th
  • October 3rd


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