Tremors felt by some Northeast Philadelphia residents early Wednesday morning proved to be a legitimate earthquake “event” according to a seismographic network with Columbia University.
The very small earthquake registered .5 on the Richter magnitude scale, according to officials at the Lamont-Doherty Cooperative Seismographic Network.
One woman, who lives near the Franklin Mills Mall, told NBC Philadelphia that she felt the tremors at 2:40 a.m. and 7:20 a.m.
Breaking news and the stories that matter to your neighborhood.
Some residents said they thought the vibrations were from someone breaking into their homes.
Fan, follow and download: Get the latest from NBCPhiladelphia.com anytime, anywhere. Follow us on Twitter, Facebook and NBC Philadelphia. Sign up for our breaking news newsletter. And, get breaking news delivered right to your mobile phone -- just text PHIBREAKING to 639710 to sign up. (Message and data rates may apply.)