The wailing of sirens at noon Saturday – 131 of them – was a successful test of the county’s early warning system first installed as part of an emergency response plan for the Diablo Canyon Power Plant, according to a news release from the county.
The sirens went off twice to test the backup controls of the system. During emergencies the sirens are meant to notify people to tune into local radio or television stations for more information.
The sirens stretch from the Nipomo Mesa to Cayucos and inland to San Luis Obispo. About 145,000 people live in the area covered by the Early Warning System.
The sirens were installed in 1982 as part of an emergency response plan for Diablo Canyon Power Plant.