On July 12, 1993 a magnitude 7.8 earthquake in the Sea of Japan produced tsunami that totally destroyed the southern half of Okushiri Island. Waves were greater than 30 feet and some could have been 100 feet. The earthquake was about 50 miles offshore and the tsunami arrived within minutes. 120 people died. The states most at risk for Tsunami are California, Hawaii, Oregon and Washington. Hawaii is at greatest risk and they have about…"Interesting and Bla Bla Facts about Tsunami"