The quake, initially measured at 7.3 was downgraded by USGS to 6.9 but later upgraded by the Japan Met Service to 7.4.
There have been 3 metre tsunami waves.
21 November, 2016
This is an image of the Fukushima Nuclear Plant from NHK with the text "evacuate immediately." Unsettling #japanquake
11/21/2016 -- Large M7.0 (M6.9) earthquake strikes Japan -- Coast of Honshu Fukushima Prefecture