Still getting all the information on this, but I'm posting just so friends and family are aware we are fine here in Tochigi... a good long shake but nothing damaged.
Up north, where the 03/11 9.0 Mag Earthquake hit, this one was also pretty rough: Japanese Seismic Intensity ratings hit 6+ on the 7 point scale. Tsunami warning for that coast as well, forecasters saying 3~6 feet of wave height possible.
3 dead. No tsunami of note. ~4 million homes without power overnight throughout the Touhoku (the Northeast region). Lots more stress on the system.