A 7.1-magnitude earthquake struck the Kumamoto region on Japan's southern island of Kyushu on July 28, 2026, killing at least 13 people and injuring over 100, though other estimates ranged from approximately 50 to 80 [1][5][11][14][26]. The Japan Meteorological Agency (JMA) measured the quake at magnitude 7.1, while the China Earthquake Networks Center (CENC) and the US Geological Survey reported a magnitude of 6.8 [6][28]. A tsunami advisory issued for Ariake Bay was lifted after no significant sea-level changes were observed [8][27].
Prime Minister Sanae Takaichi described the rescue effort as a "race against time" and pledged to marshal all available resources to save those still trapped [3][8][26]. "Even now, there are people waiting to be rescued, and this is a race against time. We will marshal all available resources on the ground to save and rescue as many people as possible," Takaichi said [8][26]. Government spokesman Minoru Kihara reported that seven people had serious injuries, 29 had minor injuries, and 9,186 people had sought refuge in 506 evacuation centers across five prefectures [8][26]. Authorities had instructed approximately 300,000 people to evacuate [7][9]. Defense Minister Shinjiro Koizumi announced the mobilization of 3,600 Self-Defense Forces personnel and 20 aircraft for disaster relief [12][21][41].
The Aeon Mall in Kumamoto's Kashima district became a focal point of the disaster after its second floor collapsed and an explosion followed the initial evacuation [7][28]. Around 20 to 30 workers remained unaccounted for, and eight people were rescued overnight, two of whom — women in their 20s — were confirmed dead [12][15][28]. The Kumamoto Prefectural Government reported four people rescued and ten unaccounted for at the mall [33]. The Kumamoto Prefectural Police stated it could not yet grasp the extent of casualties or the number of people trapped inside [32]. At the Nippon Paper Industries plant in Yatsushiro, a chimney collapse left seven people trapped, with two survivors rescued and two bodies recovered [10]. The prefectural government reported two people from the factory in cardiopulmonary arrest with nine others unaccounted for [33].
The cause of the mall explosion remains officially unconfirmed. Multiple sources reported that a gas leak is the suspected cause [11][15][17][34], and a government source similarly reported a gas leak as the suspected cause [41]. The mall operator, Aeon, stated that customers and employees were evacuated right after the initial quake and that the exact cause of the ensuing explosion was unclear [7][9][15][28]. A police officer told AFP that reports of an explosion at the mall were unconfirmed regarding damage or injuries [20].
The mall had reopened in June 2026 after a major renovation that included seismic reinforcements, having been damaged in the 2016 Kumamoto earthquake [35][38]. The renovation, completed in July 2018, had been presented as improving safety and resilience [35][38]. Sources frame the renewed destruction of the reinforced structure as calling into question the adequacy of post-2016 reconstruction efforts [3][35][38].
Japan's nuclear regulation authority reported no irregularities at nuclear power stations in the area, including the Sendai and Genkai plants [2][9][11][27]. Kyushu Electric Power specified that three active nuclear reactors in the region continued to operate normally [19]. The International Atomic Energy Agency stated that there were no damages or safety problems at the Sendai nuclear power plant and that it would continue monitoring the situation [11].
Major industrial manufacturers evacuated workers as a precaution. TSMC (Taiwan Semiconductor Manufacturing Company) stated its site was unaffected and operations were gradually resuming [15][17], while Sony, Fujifilm, and Tokyo Electron suspended operations for assessment [7][15][17]. Honda temporarily idled its motorcycle factory in Kumamoto [15][17], and Toyota Motor and Bridgestone suspended operations at their Kyushu facilities [13]. Analyst forecasts indicated that production halts would last three to seven days and that the impact appeared less severe than the 2016 earthquake [40][45].
Eyewitnesses described scenes of fear during the earthquake and its aftermath. Kazuya Tsurunaga, who was near the mall when the explosion occurred, said: "It was a huge impact. A large cloud of smoke billowed up, and because the wind happened to be blowing and the wind direction was towards the shop, the area around us was in a state like volcanic ash was falling" [7][9][15]. Hiroki Shimoda, an official at Mifune town hall, said the tremor reminded him of the 2016 Kumamoto earthquake and that he was frightened [10][28]. Chiharu Hara, a 35-year-old office worker, described her office swaying violently: "I was afraid it would collapse. Everyone panicked" [12][21]. The director of a retirement home in Kumamoto described clinging to his desk during the intense shaking, barely able to remain standing [19]. Prof. Dr. Halilibrahim Çiftçi, a visiting professor at Kumamoto University, described experiencing the 40-second tremor from his car and the resulting traffic chaos [13].
The earthquake's impact extended beyond Japan's borders. The Korea Meteorological Administration reported that tremors were detected in Busan, Gwangju, and Jeju, with over 760 reports of shaking received [22][42]. Pakistan's Deputy Prime Minister Ishaq Dar expressed solidarity with Japan [9], and Taiwan President Lai Ching-te offered condolences and stated Taiwan was ready to provide assistance [32].
The JMA warned that aftershocks of up to maximum seismic intensity 7 could occur for about a week, with the highest risk in the next two to three days [10][32]. Authorities also warned of heatstroke risk as temperatures were set to reach 34 degrees Celsius [3][15][37]. Approximately 100 small aftershocks hit Kumamoto in the hours after the initial quake, according to Japan Today, while other sources reported more than 60 [5][12][15], and around 48,000 households lost power, though estimates ranged from approximately 37,000 to 48,000 across sources [5][7][8][14][17]. JR Kyushu suspended train services including bullet trains [13][16][31], and a freight train derailed at Yatsushiro Station [13]. Stone walls at Kumamoto Castle collapsed [13][28][31], and a bridge in the Kumamoto area partially collapsed [24].