Skip to main content

ALERT: KPBS 89.5FM is undergoing scheduled upgrade work which may result in a temporary signal outage. Click here to listen on our radio stream.

LATEST UPDATES: Tracking COVID-19 | Vaccines | Racial Justice

Did You Feel ‘It?’ Not An Earthquake, But Possibly Sonic Boom

San Diego's skyline is shown in this undated photo.

Photo by Milan Kovacevic

Above: San Diego's skyline is shown in this undated photo.

Around 5 p.m. Tuesday evening, a boom shook parts of San Diego County. Residents in Golden Hill, Del Cerro and San Carlos confirmed they felt shaking, while others heard a loud boom. Twitter users around the county questioned the mysterious event, wondering if it was an earthquake.

Replying to Sunnyhaze2006, U.S. Geological Survey, which tracks seismic incidents, confirmed at 6:31 p.m. that it wasn’t an earthquake but possibly a sonic boom. Although it couldn’t provide much other information, the agency encouraged users to file an unknown event report on their website.

Sonic booms are created when an object, like an aircraft, travels through the air faster than the speed of sound, creating a thunder-like noise.

Previous sonic booms have been reported in San Diego County with one in June 2012 likely caused by aircrafts associated with the U.S. Naval Air Force.

This is a developing story and we’ll add more information as it becomes available.

FEATURED PODCAST

San Diego News Now podcast branding

San Diego news; when you want it, where you want it. Get local stories on politics, education, health, environment, the border and more. New episodes are ready weekday mornings. Hosted by Anica Colbert and produced by KPBS, San Diego and the Imperial County's NPR and PBS station.

  • Need help keeping up with the news that matters most? Get the day's top news — ranging from local to international — straight to your inbox each weekday morning.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Curious San Diego banner

Want more KPBS news?
Find us on Twitter and Facebook, or sign up for our newsletters.

To view PDF documents, Download Acrobat Reader.