Additional Testing of Calvert Cliffs Sirens Scheduled June 3-5
Additional testing of the Calvert Cliffs Nuclear Power Plant emergency warning sirens is scheduled to take place June 3 through 5, 2026, at various intervals throughout the day.
Calvert Cliffs Testing Sirens on June 1, With More Testing Later in the Week
There will be a full-cycle test of the alert and notification sirens throughout St. Mary’s, Calvert, and Dorchester counties on Monday, June 1, 2026, at noon.
Calvert Cliffs Siren Testing @ noon June 2
There will be a full-cycle test of the alert and notification sirens throughout St. Mary’s, Calvert, and Dorchester counties at noon Monday, June 2, 2025.
Calvert Cliffs Siren Testing Dec. 2
There will be a full-cycle test of the alert and notification sirens throughout St. Mary’s, Calvert, and Dorchester counties at noon Monday, December 2, 2024.
Calvert Cliffs Siren Test: Noon June 3
A full-cycle test of the alert and notification sirens throughout St. Mary’s, Calvert, and Dorchester counties will take place at noon Monday, June 3, 2024.














