JMA News & Analysis

Japan's 7.5 Magnitude Quake Triggers Tsunami Warnings

On April 20, 2026, a 7.5-magnitude earthquake struck off Japan's northeastern coast at 4:52 PM (0752 GMT). Authorities warned of possible tsunami waves up to 3 meters (10 ft), with 80 cm waves detected shortly after the tremor. Evacuations were ordered in port towns like Otsuchi and Kamaishi, and bullet train services were halted. No immediate casualties or major damages were reported, and there were no abnormalities at nearby nuclear plants, according to Japan's Meteorological Agency (JMA).