About Earthquake Early Warning in Japan

For those who visit Japan, I recommend you to learn about the "Earthquake Early Warning."

"The Japan Meteorological Agency (JMA) provides residents in Japan with Earthquake Early Warnings. This is a new system that issues prompt alerts just as an earthquake starts, providing valuable seconds for people to protect themselves before strong tremors arrive.
On 1 October 2007, JMA launched the Earthquake Early Warning service for provision through a number of media outlets such as TV and radio."
http://www.jma.go.jp/jma/en/Activities/eew.html

I also recommend you to remember the alarm beep sound which will be used when earthquake starts.
http://www.youtube.com/watch?v=23RG7-LjiQA&feature=related
http://www.nhk.or.jp/bousai/chime/index.html

I awoke this morning by this sound, and learnt that it works!