https://www3.nhk.or.jp/nhkworld/en/news/weather-disaster/tsunami/
What about Korea?
“Sea level rise” (& tsunami alert?) alert issued by the KMA (Korea Meteorological Admin.):
https://en.yna.co.kr/view/AEN20240101003600315
https://web.kma.go.kr/eng/weather/current_state/information.jsp