Dec 20, 2012 1:40 PM by KSBY News, Carina Corral

USGS tells KSBY News "sonic signals" shook the Central Coast

Staffers in the KSBY newsroom are fielding calls from residents from Morro Bay to Atascadero to Santa Maria regarding possible earthquakes.

People reported feeling "rattling" two separate times about 20 minutes apart around 9:30am. Another caller in Morro Bay reported hearing what sounded like an explosion.

The U.S. Geological Survey is not reporting any earthquakes locally, as of yet. David Oppenheimer with the USGS tells KSBY News the shaking seems to have been caused by a 'sonic signal, not an earthquake.' He said, "it could have been an aircraft breaking the sound barrier. {Possibly} A sonic boom from a military off shore that has broken the sound barrier and caused ground to shake and loud boom."

He added depending on how high the aircraft was flying, if it was flying parallel to the coast everyone along the flight path will hear it.

Oppenheimer reported there were two sonic signals one at approximately 9:26am and 9:40am.

Vandenberg Air Force base representatives told KSBY News the base is unaware of what caused the events.

Please stay with KSBY.com for the latest information.



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