Some residents in Atlantic, Cape May and Cumberland counties are saying they felt the ground shake beneath them Tuesday afternoon but no one seems to know what it was, according to NBC40.

"There was a rattling of my windows and I felt the house shake just a little bit - it was unusual." Somers Point resident Bob Stadlmeir told NBC40. "It has to be something really big to be witnessed in such a widespread area of South Jersey."

Atlantic county emergency management officials confirmed with the U.S. Geological Survey that it was not an earthquake, NBC40 reported.

The United States Geological Survey did not report any earthquakes in South Jersey in the last 7 days, according to their website.

NBC40 reported that both the 177th Fighter Wing in Egg Harbor Township and Joint Base McGuire-Dix-Lakehurst confirmed none of their aircraft were in the area at that time.

However, other people in South Jersey, including Gloucester County, reported feeling something.

"It was felt (and heard) in Gloucester County as well," said Michele Reese-Ricci.

"Felt in Millville," said Heather Tucker.

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