USGS: Loud Noise In County Was Sonic Boom
POSTED: 4:49 pm PST December 21, 2009
UPDATED: 4:52 pm PST December 21, 2009
SAN DIEGO -- A loud noise heard and felt by many San Diegans was determined to be a sonic boom, 10News reported.According to the U.S. Geological Survey, the loud noise heard and felt by many around the county shortly after 4 p.m. was the result of a sonic boom and not an earthquake.USGS seismologist Robert Dollar told 10News sonic booms are caused by high-speed aircraft and it is possible the noise bounced off the atmosphere and made its way around the county.Dollar said the military has high-speed flying areas near the Mojave Desert and over the Pacific Ocean.No damage or injuries have been reported as a result of the loud noise.
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