An earthquake with a preliminary magnitude of 6.2 jolted northeastern Japan on Sunday, the Meteorological Agency said.
No tsunami warning was issued for the 12:33 p.m. quake and there were no immediate reports of major damage or injuries.
Tokyo Electric Power Co. said its two nuclear power stations in Fukushima Prefecture were undamaged and normal operations were unaffected. Tohoku Electric Power Co. said the same for its nuclear plant in Miyagi Prefecture.
The Tohoku Shinkansen Line halted trains between Oyama Station in Tochigi Prefecture and Ichinoseki Station in Iwate Prefecture for about 10 minutes.
A reduced speed limit was temporarily enforced on the Tohoku Expressway.
A liaison office was established at the prime minister’s office to collect information.
The quake registered lower 5 on the Japanese seismic intensity scale of 7 in one area of Fukushima Prefecture but scored 4 in some other parts and in Miyagi, Yamagata, Ibaraki, and Tochigi prefectures.
The focus of the quake was off the coast of Fukushima Prefecture at a depth of about 40 km.
The temblor was felt in extensive areas, including Hokkaido and Tokyo.