The earthquake's epicenter was traced at the eastern Honshu Region about 63 kilometers (39 miles) from Fukushima Nuclear Power Plant.
The earthquake which had a depth recorded at 10.1 kilometers ( 6.3 miles) struck at 7:05 p.m. September 29, according to USGS.
There was no immediate report of damage or casualties. Likewise, no tsunami alert was issued by local tsunami warning center. AP report
said the earthquake had a preliminary magnitude of 5.6 but USGS had it at 5.1.
Northeastern Japan has been hit by a series of relatively high-intensity earthquakes since the March 11 killer quake which triggered a giant tsunami that left more than 20,000 people killed or missing.
Early this week, Sendai City, one of the most damaged areas in northeastern Japan had its airport reopened, signaling the gradual return of international and domestic flights to and from the city.