October 4, 2023 Briefing From Atlas Tsunami Warning Issued After 6.6 Magnitude Earthquake Off Japan Coast A tsunami warning has been issued for the Izu Island Chain following a 6.6 magnitude earthquake off the east coast of Japan. A 1 meter tsunami wave is expected to reach land and those along the shoreline have been advised to evacuate the area. FacebookTwitterLinkedinWhatsAppReddItEmailTelegram