A magnitude 7.5 earthquake struck northeastern Japan late Monday, shaking coastal communities across Aomori, Hokkaido, and Iwate and prompting widespread evacuations as tsunami warnings were issued. The Japan Meteorological Agency reported that the earthquake occurred around 23:15 local time, with an epicentre roughly 80 km offshore and a depth of 50 km. Waves of up to 70cm reached several ports before warnings were later downgraded to advisories.
Local governments said thousands of residents moved to higher ground or official shelters after authorities urged immediate evacuation in low-lying areas. Around 90,000 people were initially ordered to leave their homes, while power outages affected both Aomori and Hokkaido. Rail operators suspended services along parts of the Pacific coast, and hundreds of travellers were stranded overnight at New Chitose Airport.
More than 20 people sustained injuries, primarily from falling objects, according to disaster officials. Emergency teams also responded to damage in several buildings, including a hotel in Hachinohe, while a driver in Tohoku was slightly hurt after his vehicle fell into a roadside cavity. Japan’s central government opened a crisis response office to coordinate assessments, relief efforts, and transportation of supplies.
Prime Minister Sanae Takaichi urged residents in affected prefectures to act quickly during future tremors, while the chief cabinet secretary requested that people stay in safe areas until advisories were lifted. Defence authorities deployed helicopters to survey coastal regions for structural damage, landslides, and disrupted infrastructure.
Energy operators confirmed that nuclear facilities in northern Japan, including the Higashidori and Onagawa plants, detected no irregularities. The International Atomic Energy Agency reported that conditions at the Fukushima site also remained stable. Safety checks continued overnight as a precaution.
The earthquake renewed public focus on Japan’s significant seismic risk. Experts have warned of the possibility of a future Nankai Trough megaquake, an event the national earthquake panel assesses as having a significant probability within the next several decades. Such an event could result in extensive damage along Japan’s Pacific coastline, where past historical quakes have caused major loss of life.
Japan, located along the Ring of Fire, experiences frequent seismic activity and accounts for a sizeable share of the world’s stronger earthquakes each year. Monday’s tremor, while far less severe than the 2011 disaster, prompted a swift nationwide response and reinforced long-standing guidance on preparedness, evacuation routes, and household safety.
