Rumbling in New Jersey and Pennsylvania remains a mystery

WILDWOOD, N.J. (WPVI) -- A rumbling sensation reported by many residents in our area remains a mystery.[br /][br /]The calls came into Action News around 10:30 a.m. Wednesday from parts of Philadelphia, Bucks County and across South Jersey.[br /][Ads /][br /]Some had wondered if it was a minor earthquake, but the United States Geological Survey said no official seismic activity was recorded.[br /][br /]In the past, such reports [url HREF="[br /]http://6abc.com/news/navy-fighter-jets-caused-sonic-booms-along-nj-coast/1177618/" TARGET="blank" REL=""]have come from sonic booms caused by military jets.[/url][br /][br /]The military has not yet confirmed if that was the case again Wednesday.[br /][Ads /][br /]----------[br /][b][url HREF="https://wpvitv.formstack.com/forms/breaking_news_6abc" TARGET="blank" REL=""]Send a breaking news alert[/url][br /][url HREF="https://wpvitv.formstack.com/forms/report_a_typo" TARGET="blank" REL=""]Report a correction or typo[/url][br /][url HREF="http://6abc.com/apps/" TARGET="" REL=""]Learn more about the 6abc apps[/url][/b]