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How bad was Japan’s 7.6 earthquake? At least 30 injured, tsunami warning and more. What we know so far

How bad was Japan’s 7.6 earthquake? At least 30 injured, tsunami warning and more. What we know so far

Director of Earthquake and Volcanic Engineering Affairs Division at the Japan Meteorological Agency, Satoshi Harada holds a press conference in Tokyo on December 9, 2025, after the magnitude 7.6 quake struck off Misawa on Japan's Pacific coast. Photograph: (AFP)

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A massive 7.6 quake rocked northern Japan overnight, triggering tsunami alerts and injuring 30. Power outages, fires and halted trains added to the scare. 

The strong earthquake that shook northern Japan late Monday (Dec 8) night injured at least 30 people, said authorities on Tuesday (Dec 9). While the earthquake briefly triggered tsunami alerts, there was no major damage. The magnitude 7.6 quake struck at 11:15 pm off the coast of Aomori, according to the Japan Meteorological Agency. The agency warned that the tremor increased the likelihood of similar or even stronger quakes in the coming days.

30 injured in Japan 7.6 magnitude earthquake

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Most of the reported injuries were minor, but one person in Hokkaido was seriously hurt, the Fire and Disaster Management Agency said. Residents across the region described a sharp, violent shaking that lasted for roughly 30 seconds. Citing its reporter in Hokkaido, AFP reported that smartphone alarms blared as the ground shook.

Images from the area showed broken glass scattered across streets, while about 2,700 homes in Aomori temporarily lost power, Kyodo News reported. Local fire departments also received multiple reports of blazes shortly after the quake, though details remained limited.

Tsunami fears

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Authorities initially feared the worst. The JMA warned that tsunami waves as high as three metres could hit parts of the coast and urged thousands of residents to move to safer ground. In the end, the largest waves recorded were around 70 centimetres, and the warnings were lifted after several hours.

Bullet train services were halted in parts of the region while engineers inspected tracks for damage. Tohoku Electric Power said no abnormalities were detected at its Higashidori nuclear plant in Aomori or at the Onagawa facility in nearby Miyagi.

Prime Minister Sanae Takaichi urged people to remain cautious for the next week. "Please listen to information from the JMA or local governments for about a week and check if furniture is fixed .... and be prepared to evacuate when you feel shaking," she said.

Japan is among the world’s most earthquake-prone nations, sitting at the junction of four major tectonic plates along the Pacific Ring of Fire. The archipelago sees around 1,500 quakes every year, most of them mild but not always harmless.

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Moohita Kaur Garg

Moohita Kaur Garg is a journalist and Senior Sub-Editor at WION News with five years of experience covering the volatile intersections of geopolitics and global security. She has e...Read More

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