Strong earthquake at 5:18PM on December 7 in Tohoku and Kanto. Aomori, Iwate, Miyagi, Tochigi had the seismic intensity of "5 weak". Japan Meteorological Agency has issued a tsunami warning to Miyagi, as 1-meter high tsunami may arrive at 5:40PM.
Prime Minister Noda, who was campaigning, returned to the Official Residence on the news.
It was a Magnitude 7.3 earthquake.
Nuclear Regulatory Authority says there has been no report of problems at nuclear power plants.
TEPCO says there is no damage to Fukushima I Nuclear Power Plant. (As if the plant needs any more damage..) No one was hurt, no change in plant parameters. TEPCO says it was 4 in seismic intensity in Hamadori (ocean 1/3 of Fukushima Prefecture where the plant is located).
NHK apparently changed its way to report on the tsunami. The announcers are using strong words to appeal to people to take heed and take refuge. Asahi Shinbun quickly reports that a male NHK announcer is saying:
"Tsunami Warning for Miyagi Prefecture... In 10 more minutes... Please recall how it was in East Japan Great Earthquake [March 11, 2011 earthquake]... Escape to highest places as possible... To save lives, hurry and escape..."
NHK says the 1-meter tsunami did arrive at Ayukawa in Ishinomaki City in Miyagi at 6:02PM.
USGS site shows a relatively strong aftershock (M.6.2) about 13 minutes after the M.7.3 quake, then a M.5.5 and M.4.7 (two).
Many Japanese on Twitter are recalling how it was in March last year. Not the March 11 one but the one that came before, a few days earlier, just about the same magnitude.