Tsunami warning issued after 7.4-magnitude earthquake hits off Japan
A tsunami warning was issued after an offshore earthquake in northeastern Japan. The Japan Meteorological Agency reported a preliminary magnitude of 7.4 for the quake, which struck Monday afternoon (April 20). The information was published by AdaDerana, dated 2026-04-20. source http://www.adaderana.lk/news.php?nid=121476