A high-tech emergency siren system that is 'vital' to alert Puerto Ricans of dam breaks and mudslides was reportedly stuck in storage during Hurricane Dorian A high-tech emergency siren system — considered "vital" to warn Puerto Ricans of dam breaks and mud slides — sat in storage as Hurricane Dorian barreled past the island Wednesday, The New York Times reported . The solar-powered and satellite-operated system has yet to be fully installed at the Guajataca Dam, which is the largest dam in western Puerto Rico, since operation tests took place last year. The Federal Emergency Management Agency announced the system's installation last year, after emergency workers were forced to go door-to-door to evacuate locals following a dam break due to Hurricane Maria. Visit Insider's homepage for more stories. A $1.2 million high-tech emergency siren system — considered "vital" to warn Puerto Ricans of dam breaks and mud slides — was reportedly stuck in storage as Hurricane Dorian roared past the island Wednesday. The solar-powered system still has yet to be fully installed at the Guajataca Dam, which is the largest dam in western Puerto Rico, since operation tests took place last year, The New York Times reported Thursday.