Mysterious booms and rumblings heard and fellt across San Diego County for the third time in 2021


For the third time since February, a mysterious “skyquake” rattled San Diego County and Tijuana; authorities say it wasn’t an earthquake…

San Diego mysterious booms and shaking June 9 2021
San Diego mysterious booms and shaking June 9 2021 baffles officials and residents. Picture via twitter

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.

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.

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.

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.

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.

So what the heck San Diego? Do you hear and feel your drought-stricken soil crack? [San Diego Union Tribune, Fox5]

Now subscribe to this blog to get more amazing news curated just for you right in your inbox on a daily basis (here an example of our new newsletter).

You can also follow us on Facebook and/ or Twitter. And, by the way you can also make a donation through Paypal. Thank you!

You should really subscribe to QFiles. You will get very interesting information about strange events around the world.

qfiles by steve quayle


  1. Yeah, Camp Pendleton again. I can remember when the 747 space shuttle landed 40 years ago, we heard the sonic boom.

Leave a reply

Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.