That's the question neighbors in several South Jersey communities started asking themselves ever since a loud bang followed several seconds of ground shaking around 11am Saturday.
"We heard this rumble. Boom, boom boom," said Joe Longmore of Ventnor City.
He and his wife Tara were enjoying the morning outside in their backyard when jolted by the powerful sound.
"It was totally different. I never felt anything like that," Tara Longmore said.
Most residents called it a "sonic boom" but the phenomenon lit up social media websites like Facebook and Twitter with many asking if it was an earthquake.
It turned out to be military aircraft flying over water according to several local government officials, but it was enough to get plenty of people talking.
Typically a sonic boom is achieved when something travels through the air faster than the speed of sound, such as a jet.
Officials would not elaborate on the origin of the boom.
Tuesday, May 21 2013 11:04 PM EDT2013-05-22 03:04:07 GMT
Bucks County EMT Bryan Elwell is heading out to Oklahoma to help assist overwhelmed emergency responders dealing with the deadly tornado aftermath in Moore, just outside Oklahoma City. He's prepared
Two local EMTs are headed to Oklahoma to help victims and crews dealing with the aftermath of a deadly tornado.
Monday, May 13 2013 1:53 PM EDT2013-05-13 17:53:44 GMT
Mother's Day just wasn't the same for Olga Ortiz of Newark, NJ. She said her daughter Melissa Rodriguez of Collingdale, would have spent the holiday weekend with family up there, but has not been seen
Police consider rebooting investigation of missing Delco mother as her mother marks Mother's Day without her.
Sunday, April 7 2013 5:32 PM EDT2013-04-07 21:32:07 GMT
A Philadelphia firefighter from Ladder 27 died fighting a three-alarm blaze Saturday night in the city's Queen Village neighborhood. A second firefighter was injured.
A Philadelphia firefighter from Ladder 27 died fighting a three-alarm blaze Saturday night in the city's Queen Village neighborhood. A second firefighter was injured.
Friday, May 24 2013 2:49 PM EDT2013-05-24 18:49:51 GMT
Ocean City is a fabulous family-friendly, shore town that is ready for a fabulous Summer season. From the relaxing beaches to the famous boardwalk, Ocean City is safe, clean and has some of the best food
Ocean City is a fabulous family-friendly, shore town that is ready for a spectacular Summer season.
Friday, May 24 2013 12:53 PM EDT2013-05-24 16:53:29 GMT
Craft breweries from around the country are toasting the troops with a beer aged with a unique ingredient that symbolizes America's pastime -- baseball bats.Nine different brewers collaborated to create
Craft breweries from around the country are toasting the troops with a beer aged with a unique ingredient that symbolizes America's pastime -- baseball bats.Nine different brewers collaborated to create
Friday, May 24 2013 12:41 PM EDT2013-05-24 16:41:43 GMT
A Philadelphia judge has ordered that a couple who believe in faith healing over medicine be held without bail on third-degree murder charges in the April death of their 8-month-old son.Herbert and Catherine
A Philadelphia judge has ordered that a couple who believe in faith healing over medicine be held without bail on third-degree murder charges in the April death of their 8-month-old son.Herbert and Catherine
Friday, May 24 2013 9:37 AM EDT2013-05-24 13:37:26 GMT
The volunteer effort in Oklahoma is underway. Groups from across the country have hit the road, delivering hot meals to anyone in need. One local organization is doing what they can to help the victims
The volunteer effort in Oklahoma is underway. Groups from across the country have hit the road, delivering hot meals to anyone in need. One local organization is doing what they can to help the victims
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