Quarterly early warning systems test for North Anna Power Station set for May 19 Published Sunday, May. 16, 2021, 6:54 am Join AFP's 100,000+ followers on Facebook Purchase a subscription to AFP Subscribe to AFP podcasts on iTunes and Spotify News, press releases, letters to the editor: augustafreepress2@gmail.com State officials led by the Virginia Department of Emergency Management, local officials and Dominion Energy will conduct a quarterly test of the early warning siren system around the North Anna Power Station on Wednesday, May 19 at approximately 11:10 a.m. For the early warning siren system, a steady three-minute tone will be sounded by 68 sirens in Caroline, Hanover, Louisa, Orange, and Spotsylvania counties. The sirens are located within a 10-mile radius of the power station.