A powerful earthquake struck off the northeastern coast of Japan’s main island of Honshu at 7:30 a.m. local time on Thursday, with the Japan Meteorological Agency (JMA) revising its magnitude estimate from 6.9 to 7.2. The tremor, centred in the Pacific Ocean east of Iwate Prefecture at a depth of around 44–50 kilometres, was felt as far away as Tokyo but did not generate a tsunami, according to Japanese authorities.

Initial statements from the government’s chief spokesman, Minoru Kihara, said there were no immediate reports of casualties or significant damage. However, later in the day, Kyodo news agency and prefectural officials reported that at least four to six people had sustained minor injuries, mostly from falls, in Aomori and Iwate prefectures. In the town of Hashikami, where the shaking reached the second-highest level on Japan’s seven-point seismic intensity scale, residents described picture frames falling and kitchen items scattered, but no structural collapses were immediately confirmed. Television footage showed traffic moving normally in the coastal city of Hachinohe.

Prime Minister Sanae Takaichi convened an emergency task force and urged residents in affected areas to remain alert for aftershocks of similar intensity over the following week. The Tohoku Shinkansen bullet train services were suspended between Tokyo and Shin-Aomori for safety inspections, resuming fully by early afternoon. Nuclear regulators reported no abnormalities at any power plants in the region, including the Fukushima Daiichi facility and the Higashidori and Onagawa stations.

Japan, which sits on the Pacific "Ring of Fire" and accounts for roughly a fifth of the world’s earthquakes of magnitude 6 or greater, has experienced a series of strong tremors in the same area in recent months, including a magnitude 7.7 quake in April and a 7.5 event in December. The JMA said the criteria for issuing a special mega-quake advisory were not met this time, though seismologists continue to monitor the zone where the Pacific and continental plates converge. As of Thursday evening, authorities were still assessing the full extent of the damage, with no reports of major infrastructure failure.