For the third time since February, a mysterious “skyquake” rattled San Diego County and Tijuana; authorities say it wasn’t an earthquake…
For the third time since February, a mysterious boom was heard and shaking felt Tuesday night by residents across San Diego County.
“Are we having an earthquake? Our sliders won’t stop shaking, but my chair isn’t moving and it’s not wind,” a Coronado resident posted to Facebook.
“I heard it here on the Strand, but didn’t feel anything. Sounded like 2 loud bangs, I thought it was thunder. I am curious what it could have been,” another Coronado resident posted.
Anyone feel that vibration and hear the accompanying dull but omnipresent sound or am I tripping now? #SanDiego #SanDiegoBoom #NorthPark @nbcsandiego #Aliens #ThingsThatMakeABigBoom #ThingsThatMakeYouGoHmm
— bodaciousbrains (@bodaciousbrains) June 9, 2021
The latest mystery phenomena — sometimes referred to as a skyquake — was reported just before 8:20 p.m. by residents as far south as Tijuana, as far east as El Cajon and in San Diego neighborhoods in the southeast and coastal areas, as well Linda Vista, Clairemont and Tierrasanta.
A similar incident shook the region on Feb. 16. At the time, the United States Geological Survey tweeted that the shaking wasn’t an earthquake “but it may have been a sonic boom which are not too uncommon” in San Diego.
Did you hear the sonic boom in SoCal? I grew up by an airbase so it sounded familiar, but still startling af lol ? a sonic boom straight through the crown chakra, you could feel it above… I ducked lol ?#sandiegoboom but obv #itwasaliens ? https://t.co/6C6sHkuc0L
— Jessica Darling (@JDarlingPsychic) June 9, 2021
About three weeks later, on March 10, residents across the region again reported a similar shaking and loud boom, though no earthquakes were reported.
On Tuesday night, the USGS website again showed no seismic activity in the region.
While the two previous mystery shaking events occurred within 10 minutes of 5 p.m., Tuesday night’s incident occurred after the sun had set. A few minutes later, San Diego police received several calls regarding the noise and shaking, according to Sgt. Kevin Gibson.
I felt the #SanDiegoBoom in #PointLoma. Sounded like someone was deliberately stomping on my roof and banging on my front door at same time — very strange. Sound and vibration is different from earthquake and woke up my dog, who then ran off. I’m still like wtf? #SanDiego
— San Diego Steve (@BybloodofJesus) June 9, 2021
One caller reported hearing what they thought was someone on their roof, though dispatchers and officers believed it was likely related to the mysterious shaking, according to police radio traffic.
San Diego Mayor Todd Gloria heard it, too.
Yes, I heard it.
No, I don’t know what it was.
I’ll share if I get any information.
Get vaccinated if you haven’t yet.#SanDiegoBoom
— Todd Gloria (@ToddGloria) June 9, 2021
Though fewer residents in North County reported hearing the noise or feeling the shaking, former congressional candidate Ammar Campa-Najjar posited that the source may have been Marine Corps Base Camp Pendleton, which posted a noise advisory on Facebook earlier this month reporting that live-fire artillery training would be conducted June 5 through June 11, and last as late as midnight.
What we know right now about the origin of these San Diego booms?
- The National Weather Service said the booms weren’t weather related.
- USGS did not detect an earthquake in San Diego County.
- Federal Aviation Administration public affairs manager Ian Gregor said to check with the military.
- MCAS Miramar Capt. Kurt Stahl said they reviewed all tapes with the FAA and was confident that it wasn’t caused by their aircraft.
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