From NY Daily News:
The 2.6 magnitude quake’s epicenter was reported in Gladstone around 9 a.m., according to the U.S. Geological Survey. Officials say the area, which sits on the Ramapo Fault Line, had experienced a 1.5 magnitude earthquake last month.
The Star-Ledger reported:
About 100 people called Bernardsville police in the following minutes, Remian said, after experiencing a loud rumble then hearing what sounded like a boom. "It was felt by everybody here," Remian said from police headquarters. "It felt like the whole room was shaking around us, and a loud explosion afterward."
See earlier IPBiz post:
Earthquake hits New Jersey on Valentine's Day
for the USGS map