Strong offshore quake triggers Japan tsunami warning

A strong 7.4-magnitude earthquake struck off Japan’s northeastern coast, triggering a tsunami warning of up to three meters for Iwate, Hokkaido and Aomori, with smaller advisories elsewhere. Observed waves reached Kuji Port (0.8 m) and Miyako Port (0.4 m); residents were urged to evacuate to higher ground as authorities activated an emergency task force. Rail services were suspended due to outages and TEPCO reported no abnormalities at major nuclear plants. Officials cautioned the situation is developing, underscoring Japan’s ongoing seismic risk after the 2011 Tohoku disaster.