Sedgwick County Emergency Management will test the attack mode function of its 70-year-old Thunderbolt siren system on Monday. The attack mode function was last tested in 2015.

That's why tornado siren testing will take place Wednesday afternoon in Michigan. This is part of "severe weather awareness week". A statewide tornado drill is scheduled for 1 p.m. Wednesday.

Siren tests are scheduled to occur near several West Michigan dams next week. Consumers Energy says the sirens will be tested Thursday, Aug. 18 at 9 a.m. near the Hardy, Croton and Rogers dams.

Sedgwick County Emergency Management will test the “attack mode” function of all 152 tornado sirens across the county for the first time since 2015.

In Midland County, sirens sound for testing and in instances of a hazardous material release, tornado warning, or severe thunderstorm warning with a destructive wind tag of 80 miles per hour or more.