All of San Luis Obispo County’s 131 emergency alert sirens will be tested twice on Saturday.
This is the annual early warning system siren test in which the sirens are fully activated at noon and again at 12:30 p.m. for about three minutes each time. The county’s Reverse 911 system will also be tested.
The activations are a test, and no action is required from the public when the sirens are heard. Two tests of the system are needed to ensure that the system can be initiated from two activation points.
The Reverse 911 system will be tested between 9 a.m. and noon. All land lines and registered cell phone lines in the county’s emergency planning zone, which extends from Cayucos in the north to the Nipomo Mesa in the south and as far inland as San Luis Obispo, will be contacted.
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The early warning system was installed as a requirement for the licensing of Diablo Canyon nuclear power plant. The system can also be used for any other local emergency.