MOSCOW (Sputnik) — According to the USGS, the quake occurred at 21:23 GMT on Tuesday, 12 miles north-east of the Ofunato city in Iwate Prefecture.
A powerful 6.9 magnitude earthquake has struck off the main Japanese island of Honshu, according to the US Geological Survey.— Chris Choi (@Chrisitv) May 12, 2015
There were no immediate reports of casualties or damage. Tsunami warning was not issued.
Honshu is the largest island of the Japanese archipelago. It is divided into five regions and it contains 34 prefectures. Honshu also contains Japan's largest cities, including Tokyo.
— 地震マップ (@eq_map) May 12, 2015
Japan had experienced over 900 aftershocks after the magnitude 9.0 earthquake on March 11, 2011 with about 60 aftershocks being over magnitude 6.0 and three over magnitude 7.0.
The country experiences approximately 400 earthquakes every day, although the vast majority are shindo scale "0" or less and detectable only using specialist apparatus.