Sirens will be tested about 11:50 a.m. Wednesday around Duke Energy’s Catawba and McGuire nuclear plants.
The 89 sirens within 10 miles of the Catawba station and the 67 sirens within 10 miles of McGuire will be tested for three minutes. McGuire is in Huntersville. The Catawba plant is in York, S.C.
The tests are performed quarterly with emergency officials in Mecklenburg, York, Gaston and other counties.