Just now, a magnitude 7.3 earthquake just hit the East coast of Japan which shook half of the island. My house in Tokyo shook for a very long time spilling drinks.
Currently there is a tsunami alert in the Miyagi region - same area from the 2011.03 earthquake. Folks are being evacuated to high ground.
Mobile networks are jammed.
Tokyo seems fine but not a lot of info from up North. Will update you as I have more info.
Twitter account @earthquakejapan predicted this quake 5 hours ago but there was no such warning in Japan.
@earthquake_jp also has more info.
Updates go to my Twitter first.
https://twitter.com/dannychoo
Update:
First tsunami wave hit but no damage.
https://twitter.com/dannychoo/status/276977554374668288
Reports are in saying that today's quake a huge aftershock from the 2011.03 earthquake.
http://www3.nhk.or.jp/news/html/20121207/k10014034151000.html
Friday 7th 18:53
Nuclear reactors seems to be fine. Highways are fine. Few delays on trains. Mobile networks still jammed.
Friday 7 19:21
Phew. All tsunami warnings have been lifted as of 1 minute ago.