Mystery shaking, rumbling felt along Jersey Shore again. No earthquakes reported.

For the second time this month, residents across southern New Jersey have been reporting long periods of shaking inside their homes Thursday afternoon, with windows and walls rattling. And just like before, there have been no earthquakes reported anywhere in the eastern United States.

There also have been no thunderstorms reported in or near New Jersey on Thursday, but some residents are speculating the rattling inside their homes — along with some reports of loud booms — may be linked to military planes and helicopters flying over the Garden State.

Naval Air Station Patuxent River, a U.S. naval station based in St. Mary’s County in Maryland, issued a noise advisory on its Facebook page Tuesday, saying it would be conducting “noise-generating testing events” between Tuesday and Friday.

“Pilots at NAS Patuxent River will be conducting Field Carrier Landing Practices (FCLPs). FCLPs are simulated carrier landings conducted to prepare the pilot to land safely on an aircraft carrier,” the agency said in its Facebook post.

“The practices consist of series of touch-and-go maneuvers, called ‘bounces.’ Airspeed, altitude and power are all precisely choreographed in order for a pilot to approach the ship within an acceptable window to land on the deck safely,” the post added.

“Residents may notice increased noise levels due to these operations,” the post said.

It wasn’t immediately known how far away the noise would carry. But Facebook has been packed with reports of shaking in homes and businesses across South Jersey Thursday afternoon. The first was around 11 a.m. and the second about two hours later.

Several residents noted they have felt some shaking or heard some loud booms in the past, but they said they never felt the rattling become as intense as it was on Thursday.

Among the towns or sections of towns where rattling was reported were Erma, Cape May, Galloway, Middle Township, North Cape May, Rio Grande and Smithville. Some residents said they felt their houses shake but heard no booms, while others said they heard loud booms.

“My whole house shook. Windows rattle(d), bed moved back and forth. And it was long,” one resident wrote on the Facebook page of South Jersey weather forecaster “Nor’easter Nick” Pittman. “I do hear the jets as I’m in Galloway near the airport, but this just seemed different. No boom, just steady shaking. At first I thought it was the wind but it got stronger.”

Another Facebook user in Atlantic County said: “In Smithville we just shook for a good 45-60 seconds with a small pause, but the dog and cats did not like it, this time was more than the sonic boom or break that we feel at 2 p.m. It was freaky!!”

On Friday, Jan. 13, residents from as far south as Cape May and up to Manahawkin along the coast and as far west as Glassboro in Gloucester County reported feeling shaking in their homes. They said the rattling lasted at least 10 seconds.

A supersonic military airplane was flying a few miles off the coast that day, and could have been the cause of the rumbling, the Press of Atlantic City reported at the time. The military has an Atlantic test track for flights about 3 miles off the eastern seaboard, and a sonic boom would occur if a plane was flying fast enough to break the sound barrier.

South Jersey isn’t alone when it comes to feeling and hearing loud noises. In early January, a loud boom — which some described as being as loud as an explosion — was reported by many people in northern New Jersey and northeastern Pennsylvania.

The cause of that boom was not immediately determined.

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