Although it was hot spot in Japan, an earthquake, expected every 5 to 10 years struck Japan, causing a tsunami breaking through the entire pacific coast.
Japan was struck by a magnitude 8.9 earthquake off its northeastern coast Friday, unleashing a 13-foot (4-meter) tsunami.
http://www.huffingtonpost.com/2011/03/11/japan-earthquake-tsunami_n_834380.html
http://www.chinapost.com.tw/asia/japan/2011/03/11/294283/Major-tsunami.htm