H-SAN LUIS OBISPO COUNTY

Dec 20, 2012 3:03 PM by Madelyn Monteath, KSBY News

'Sonic signals' to blame for rattling and loud explosion that shook Central Coast

KSBY news is learning more about the "sonic signals" that shook the Central Coast.

People have reported feeling "rattling" and hearing what sounded like loud explosions three separate times starting around 9:30 a.m. Thursday.

David Oppenheimer with the U.S. Geological Survey told KSBY News the shaking and boom seems to have been caused by a "sonic signal not an earthquake." He continued to say that the object is most likely an aircraft heading north and that preliminary reports show it reaching 2,000-plus miles per hour.

The U.S.G.S. is not reporting any earthquakes locally.

Vandenberg Air Force Base reports crews there have not launched a rocket nor are they conducting any explosive ordinance disposal operations. "There is nothing at this moment {here} that would have caused that," said Kathy Peoples, VAFB Public Affairs Officer.

KSBY news also reached out to PG&E. "PG&E is not conducting seismic testing today," said PG&E Spokesperson Tom Cuddy.

Please stay with KSBY.com for the latest on this developing story.

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