TOKYO, April 11 (Xinhua) -- An earthquake with a preliminary magnitude of 6.0 struck off the coast of Miyagi Prefecture in the Sanriku region on the northeastern side of the island of Honshu, the weather agency here said Thursday.
According to the Japan Meteorological Agency (JMA), the temblor, which occurred at 5:18 p.m. local time, was centered offshore, with its epicenter at a latitude of 40.4 degrees north and longitude of 143.4 degrees east.
The quake occurred at a depth of 10 km, the JMA said.
The weather agency has not issued a tsunami warning or advisory as a result of the quake.
The earthquake logged 3 on the Japanese seismic intensity scale which peaks at 7 in some areas of Miyagi Prefecture, the JMA said.
In the neighboring prefectures of Aomori and Iwate, the quake also registered 3 on Japan's seismic scale, said the JMA.
There have been no immediate reports of major damage or injuries as a result of the offshore quake.
Japan's nuclear watchdog has not, as yet, issued any warning about irregularities or abnormalities at the Onagawa Nuclear Power Plant in Miyagi Prefecture, the Higashidori Nuclear Power plant in Aomori Prefecture, or at the stricken Fukushima Daiichi Nuclear Power Plant in Fukushima Prefecture.