CHARLOTTE, N.C. – The outdoor warning sirens around the Catawba and McGuire nuclear stations will be tested between 11 a.m. and 1 p.m. on Wednesday, July 9, 2025.
- Five- to 30-second quarterly test scheduled between 11 a.m. and 1 p.m. on Wednesday, July 9
- No public action required
The 89 sirens within 10 miles of Catawba Nuclear Station, located in York, S.C., and the 67 sirens within 10 miles of McGuire Nuclear Station, located in Huntersville, N.C., will sound for five to 30 seconds. To ensure they are functioning properly, it may be necessary to test some sirens more than once. Follow-up testing after siren maintenance may be required after 1 p.m.
Testing is performed in cooperation with emergency management officials in Catawba, Gaston, Iredell, Lincoln and Mecklenburg counties in North Carolina, and York County in South Carolina, who are responsible for sounding the sirens.
Because this is a test, local broadcasting stations will not interrupt regular programming to broadcast Emergency Alert System (EAS) messages. If there was ever a real emergency at the plant requiring the sirens to be sounded, local radio and television stations would broadcast information and instructions to the public.
For more information about the outdoor warning sirens, residents can refer to information available at
duke-energy.com/NuclearEP.
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