NERVによると津波の心配はないとのこと
https://twitter.com/EN_NERV/status/1478113181348556800
TwitterNERV on Twitter“Earthquake Flash Report – 1/4
At around 6:08am, an earthquake with an estimated magnitude of 6.3 occurred near Chichijima at a depth of 70km. There is no threat of a tsunami. #earthquake”