203 E. Grand Blanc Road, Grand Blanc MI
MONDAY-FRIDAY: 8:00 AM-5:00 PM  |  CITY: 810-694-1118  | DPW: 810-694-5420  | POLICE : 810-694-1111  | FIRE: 810-603-7901

Siren Testing

The sirens are tested the 1st Saturday of the month from March through November at 1:00 p.m. If a large fire is in progress, the test may be delayed for up to 15 minutes. The test lasts approximately 4 minutes and begins with a wavering tone, followed by a solid blast tone.

Besides the test, the sirens are activated for tornado warnings and/or 70 miles per hour winds or higher only. For a tornado or 70 mph winds or greater warning, the siren will give a solid one minute or three minute (depending on siren model) blast every 10 minutes until warning has expired.

On March 24th, as a part of the state recognized Severe Weather Awareness Week, the state scheduled a voluntary statewide tornado drill for 1:00 pm. This was reported on Michigan.gov here.

For more information on severe weather and being prepared for such weather, visit https://www.michigan.gov/miready or follow MSP/EMHSD on Twitter at @MichEMHS

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City of Grand Blanc Welcome Video
contact-1 City: 810 694-1118 | DPW: 810 694-5420 | Police: 810 694-1111 | Fire: 810 603-7901
contact-2 OFFICE HOURS: Monday-Friday | 8:00 AM-5:00 PM
contact-3 203 E. Grand Blanc Road, Grand Blanc MI