Massive Quake Rattles Kyushu Region
A powerful earthquake with a magnitude of 7.1 struck southwestern Japan on Tuesday afternoon, killing at least one person, injuring dozens, and leaving an unknown number of people trapped inside a collapsed shopping mall in Kumamoto Prefecture. The quake, which struck at 4:27 p.m. local time at a depth of roughly 16 kilometers, registered a maximum 7 on the Japanese seismic intensity scale in parts of Kumamoto, the highest possible reading and the first such level recorded since the Noto Peninsula disaster of early 2024.
The temblor triggered a powerful explosion and partial collapse at an Aeon shopping mall in the town of Kashima, where authorities fear as many as 10 people remain unaccounted for after the building’s second floor gave way. Local police said roughly 200 people had evacuated the structure when the quake hit, but several individuals were seen re-entering the building before the blast occurred. Self-Defense Forces personnel have been deployed to the scene and are leading search and rescue operations.
Widespread Damage and Infrastructure Disruption
In the coastal city of Yatsushiro, a smokestack at a Nippon Paper Industries plant broke and toppled, leaving two people unresponsive and nine others unaccounted for, according to the prefectural government. A cargo train operated by Japan Freight Railway derailed and overturned at Yatsushiro Station, though the driver escaped unhurt. Stone walls at the historic Kumamoto Castle, which were extensively damaged during the deadly 2016 Kumamoto earthquakes, crumbled once again under the force of the shaking.
Power outages have affected approximately 48,000 households across the prefecture, while 140,000 households have lost access to running water. The Ministry of Land, Infrastructure, Transport and Tourism reported that a bridge on the Minami-Kyushu Expressway had shifted and sustained structural damage, rendering it impassable. All services on Kyushu Railway lines, including the Kyushu Shinkansen bullet train, were suspended indefinitely.
Government Response and Rescue Efforts
Prime Minister Sanae Takaichi convened an emergency meeting of the government’s disaster response taskforce shortly after the quake and announced the immediate dispatch of 3,600 Self-Defense Forces personnel to the affected region. She pledged an all-out government effort to save lives and coordinate with local authorities on the ground.
“The governor of Kumamoto has requested the SDF be sent, so 3,600 SDF members will be dispatched for disaster relief work,” Takaichi said. “This is a very crucial moment, and human lives come first: we would like to minimize the harm to people, and to ensure the safety of our people.”
A hospital in Kumamoto City reported receiving roughly 50 injured individuals. Local firefighting authorities said they had received numerous reports of people trapped inside collapsed homes across the region.
Industrial Impact and Regional Solidarity
The earthquake has disrupted manufacturing operations across Kyushu. Honda Motor Co. announced that its Kumamoto factory would remain closed until at least Wednesday evening. Toyota Motor Corp. halted production at three plants in neighboring Fukuoka Prefecture. Taiwan Semiconductor Manufacturing Co., which operates a facility in Kumamoto, evacuated its employees and suspended operations pending safety inspections.
Taiwan President Lai Ching-te offered assistance in a statement on social media. “Taiwan and Japan are true friends who stand together in times of adversity. We are closely monitoring the situation on the ground, and Taiwan stands ready to provide assistance at any time,” he wrote.
Aftershock Warning and Public Safety Advisory
The Japan Meteorological Agency urged residents to remain vigilant for powerful aftershocks over the coming days, warning that seismic activity of similar intensity could continue for the next week, particularly during the next two to three days. The agency also cautioned about the risk of heatstroke, as temperatures in Kumamoto are forecast to reach 35 degrees Celsius or higher in the aftermath of the disaster.
Professor Sakai Shinichi of the University of Tokyo’s Earthquake Research Institute said the quake was likely caused by a section of the Hinagu fault zone that had not slipped during the catastrophic 2016 earthquakes. He warned that since seismic activity continued for an extended period after those earlier quakes, similar prolonged activity may follow this event. Because the southern portion of the Hinagu fault zone faces the ocean, he noted there is a possibility of tsunami depending on the magnitude of future earthquakes.
One resident in the hard-hit city of Uki described the terrifying experience in stark terms. “It shook vertically and sideways for about 10 to 20 seconds. It was worse than during the Kumamoto earthquake in 2016,” said an 89-year-old man who survived both disasters.
A tsunami advisory was issued for the Ariake and Yatsushiro seas shortly after the quake but was lifted at 6:10 p.m. after no significant wave activity was observed. Officials confirmed there were no abnormalities at either the Sendai or Genkai nuclear power plants, and radiation levels around both facilities remained unchanged.