Washtenaw County Outdoor Warning Siren System
Washtenaw County's 87 warning sirens will be tested at Noon on Saturday, October 6th. This will be the final siren test of the 2018 calendar year.
If there is a threat of severe weather on the day of a test, it will be cancelled.
Purposes for Activation:
Except for scheduled testing, these sirens will be activated when:
- The National Weather Service has issued a tornado warning
- A severe thunderstorm has been detected with 75 MPH winds or greater
- A hazardous materials accident requires immediate protective action by the public
- An attack on the United States is imminent, underway or has recently occurred
Recommended Public Response:
Activated sirens are an indication that members of the public should immediately go indoors and listen to local Emergency Alert System radio stations for official information.
Washtenaw County’s emergency stations are:
- WEMU 89.1 FM (LP-1)
- WWWW 102.9 FM (LP-2)
Routine Testing:
All Washtenaw County operated sirens will be tested at noon on the first Saturday of every month from March through October. If severe weather is possible on the afternoon of a test, it will be delayed until the following month.