Credit: Tom Sofield/LevittownNow.com
From Cape May in New Jersey to Langhorne, residents reported a boom and a ground-trembling rumble late Wednesday morning.
The cause, according to numerous officials, was unknown as of nightfall Wednesday.
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The U.S. Geological Survey reported the boom and shake was not an earthquake and the Press of Atlantic City said military officials told them it did not appear to be linked to their operations.
The Press of Atlantic City cited meteorologist Joe Martucci and stated it may have been a weather phenomenon called an inversion. The event happens when warmer air sits over top a layer of cool air. The condition allows sound from far away to be magnified.
“I was at work. Had ear plugs in. Was welding a trailer. Had half of it up in the air via crane. It wobbled back and forth for no reason,” Levittown resident Matthew Beecher posted on Facebook.
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Reader Jaime Shipp said the windows shook in the Magnolia Hill neighborhood in Bristol Township’s Levittown section.
Other readers in Langhorne and one in Morrisville all reported similar incidents occurring.
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A previous sonic boom incident in New Jersey was caused in early 2016 when the U.S. Navy was testing its new F-35C Joint Strike Fighter jet, according to NBC News.
