I missed the earthquake!!

This is wierd… as you may know there was an earthquake in Japan today… 6.8 magnitude with epicenter on the northwestern Tokyo region…
I did NOT feel it at all!! I saw on the subway that many lines were delayed and service was suspended on some lines because of an earthquake. I felt nothing.
Max and Anais both felt it and said that they could see the top of buildings swaying and the lamps and curtains moving… as if you were in a boat in a storm…
I guess I was in the train and did not recognize it as a quake…