The 1983 Sea of Japan earthquake, also known as the 1983 Nihonkai-Chubu earthquake, occurred on May 26． It was 7.8 magnitude and occurred in the Sea of Japan. The tsunami caused 104 deaths, 100 caused by the quake. The tsunami hit communities along the coast, primarily in Aomori and Akita Prefectures and the east coast of Noto Peninsula.
There are three things to share about the tsunami disaster.
The first is the tsunami-generated location, the second is the broadcasting, and the third is the victims of school children. First, there was an ancient tradition that tsunamis never hit the coast of the Sea of Japan. This normalcy bias* exacerbates the damage. The second was the first tsunami disaster broadcast worldwide during that time. The people who had home videos also contributed to the media. The tsunami warning system, which provides wireless tsunami information from the Sea of Japan to the local area to inform local people, was improved after the event. Third, 43 schoolchildren were hit, and 13 passed away. They were on an excursion. The school teacher could not do anything during that time. The 2011 Great East Japan Earthquake and Tsunami disaster also had teacher-related issues. Both tsunamis were daytime.
http://disasters.weblike.jp/disasters/archives/2607