Japanese news agency Kyodo News quoted the weather agency as saying that the earthquake appears not to be linked with the chance of a massive quake occurring from the Nankai Trough in the Pacific.
The quake, which struck at 19.57 local time, measured at a lower five on the Japanese seismic intensity scale of seven in western Kanagawa Prefecture, according to the agency. The focus of the quake was 10 kilometres underground.
The temblor came after the Japan Meteorological Agency issued on Thursday its first-ever advisory on higher-than-usual risks of a Nankai Trough megaquake.
The advisory was released after a magnitude 7.1 quake rattled southwestern Japan, with its focus located in waters off Miyazaki Prefecture, on the western edge of the Nankai Trough.