Sonic boom, not earthquake, caused jolt felt widely across SoCal, expert says

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Friday, July 9, 2021
Jolt felt across SoCal attributed to sonic boom, expert says
A jolt that was felt across the Southland Friday morning is being attributed to a sonic boom, earthquake expert Dr. Lucy Jones tells Eyewitness News.

A jolt that was felt across the Southland Friday morning is being attributed to a sonic boom, renowned seismologist Dr. Lucy Jones tells Eyewitness News.



Around 9:20 a.m., ABC7 received several calls from viewers wondering whether the shaking was from an earthquake.



RELATED: Hundreds of small earthquakes reported following 6.0 near California-Nevada



Dr. Jones confirmed seismograms that show the Earth didn't move.



A Federal Aviation Administration spokesperson said the rattling most likely came from a military aircraft.



There were no immediate reports or damage or injuries.



VIDEO: Video shows boulders scattered on NorCal highway after earthquake


Video shows boulders scattered in the road on Highway 395 near Coleville, a town in Mono County, following an earthquake Thursday night.


NASA describes a sonic boom as "the thunder-like noise a person on the ground hears when an aircraft or other type of aerospace vehicle flies overhead faster than the speed of sound or supersonic."



As NASA puts its, "Air reacts like a fluid to supersonic objects."



NASA says as objects travel through the air, the air molecules are pushed aside "with great force and this forms a shock wave much like a boat creates a bow wave. The bigger and heavier the aircraft, the more air it displaces."



VIDEO: Video shows 'dust waterfall' as CA earthquake sends rocks crashing down Sierra Mountains


Video taken from KOA campgrounds in Coleville, Calif. shows cascades of dust from rocks crashing down the side of a mountain as an earthquake rocked the region.


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