Assoc: Press just put out a Tsunami alert.
Due to under sea earthquake ten miles south of Tokyo, 50 minutes ago.

Where?

http://www.prh.noaa.gov/ptwc/bulletins.htm

The Pacific Tsunami Warning Center appears to know nothing about it.

12:00pm PST

Seems the Japan undersea quake yesterday, was only minor.

http://news.bbc.co.uk/2/hi/asia-pacific/4186601.stm

Japan has the most active earthquake area in the world, since it sits upon the conjunction of 4 plates.So its only a question of time before they have a disaster quake.
If and when they do have one, you might read about it in "The Japanese Times" The popular
Japanese Newspaper thats been published in English
for the last 100 years. It includes-News- Culture-
Life-Business-Goverment, and Personal ads.

http://www.japantimes.co.jp/cgi-bin/geted.pl5?ed20050117a1.htm