5.4-Magnitude Earthquake Strikes Romania's Vrancea An earthquake measuring 5.4 on the Richter scale was registered at 9.15 pm on Saturday in Romania's eastern county of Vrancea. The epicenter was located around 400km northeast of Bulgaria's Sofia and around 180km away from the Bulgaria-Romania border, according to the National Institute of Geophysics, Geodesy and Geography of the Bulgarian Academy of Sciences (BAS). According to the European Mediterranean Seismological Centre, the earthquake measured 5.5 on the Richter scale. Romania's national institute of geophysics estimated the magnitude of the earthquake at 5.7 on the Richter scale, adding that it had had a depth of 39km and had been followed by numerous aftershocks, the strongest one measuring 3.2 on the Richter scale. The earthquake was felt in northern Bulgaria, according to reports of the Bulgarian National Radio.