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LOS ANGELES (CBSLA) – A thrill felt across much of Southern California was not an earthquake – it was a sonic boom, according to the US Geological Survey.
The sonic boom was felt around 9:20 a.m. Friday across a wide swath of southern California. And even though it wasn’t an earthquake, the USGS created an event page that said it was felt from Huntington Beach to Thousand Oaks along the coast, and up to inland to Lake Elsinore.
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Hey SoCal – if you felt or heard something this morning at 9:20 a.m. local time that sounded like an earthquake, maybe it was a sonic boom – check out the event page for details https : //t.co/F1DRFhkt5N and learn more about sonic booms here https://t.co/R5kN5LTZ0w.
– USGS Earthquakes (@USGS_Quakes) July 9, 2021
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Earthquake expert Dr Lucy Jones said the seismograms clearly showed the earth was not moving – just the air, suggesting the source was a supersonic plane over the ocean.
The breakdown of people who felt the sonic boom from https://t.co/DMc1xgkJo4
strongly suggests that the source was a supersonic plane over the ocean. pic.twitter.com/tKTXiYWGlz– Dr Lucy Jones (@DrLucyJones) July 9, 2021
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It is not known which plane may have caused the sonic boom.
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