A magnitude 5.7 earthquake struck central Japan early on Sunday, injuring dozens of people, breaking windows and disrupting rail services. Japan’s meteorological agency has warned that further strong shaking is possible, while saying the tremor does not indicate an unusual change in conditions along the Nankai Trough.
The earthquake struck at 1.04am local time on 8 November 2026, with its epicentre in western Shizuoka Prefecture. The Japan Meteorological Agency (JMA) put its provisional magnitude at 5.7 and its depth at 41 kilometres, refining an earlier estimate of around 40 kilometres. The strongest recorded shaking was in Chita, in neighbouring Aichi Prefecture, rather than at the epicentre itself.
Injuries reported across two prefectures
By Sunday afternoon, TV Asahi was reporting at least 25 injured people in Aichi, including two seriously injured, and three more in Shizuoka. That amounts to at least 28 reported injuries across those two prefectures, although the tally is not a final, independently consolidated national total. There were no reported deaths in the accounts reviewed.
One woman in her 50s reportedly suffered a broken ankle after falling in Aichi. In Shizuoka, the prefectural government’s 4pm damage bulletin confirms three minor injuries: a woman in her 80s who fell, a woman in her 30s with a suspected shoulder dislocation and a woman in her 90s injured after falling from her bed.
The quake shattered windows at shops and businesses, leaving glass on streets, while books were thrown from shelves. Shizuoka officials separately recorded four cases of damage to non-residential structures, including fallen roof tiles at an unoccupied building and a collapsed block wall. Those reports establish local damage, but not widespread building collapse.
Where was the earthquake felt?
The epicentre was in western Shizuoka on Japan’s main island of Honshu, near the industrial and residential centres of the Tokai region. Although the earthquake was centred in Shizuoka, Chita in Aichi recorded the highest Japanese seismic intensity, shindo 5-upper (5+), on the country’s scale of shaking from 0 to 7. Strong shaking was also recorded in parts of Nagano, Gifu and Hamamatsu in Shizuoka.
Magnitude describes the energy released by an earthquake. Japan’s shindo intensity scale instead describes how strongly the ground shook at particular locations. The two measures are not interchangeable. JMA said this earthquake occurred within the Philippine Sea tectonic plate.
Rail services delayed and local roads affected
Rail operators introduced safety checks and reduced speeds in the affected area. Parts of the Tokaido Shinkansen bullet train service were delayed, while the overnight Sunrise Izumo sleeper train was temporarily held between stations in the Hamamatsu area. Local reports said its approximately 290 passengers were not injured and the service resumed after 3.30am.
In Nagano, a road near Iida was closed after a rockfall. Local damage checks also covered roads, ports and other infrastructure. Shizuoka’s 4pm bulletin said rail services in the prefecture were operating normally by then, with no reported power, communications or water outages. It recorded one Hamamatsu municipal road subject to alternating traffic after a rockfall. This was a time-specific situation report, not a guarantee that every service elsewhere had returned to normal.
Officials reported no tsunami threat. The Shizuoka government also said that checks at the Hamaoka nuclear power plant identified no abnormalities in its units or radiation monitoring, and no radiation impact outside the plant.
What does this mean for the Nankai Trough?
The Nankai Trough is an offshore subduction zone south of Japan where the Philippine Sea plate descends beneath the overriding plate. It is capable of producing extremely large earthquakes, making changes in activity there a focus of close monitoring.
JMA said Sunday’s earthquake occurred within the broad expected source region of a future Nankai Trough earthquake. However, because of its size and characteristics, the agency assessed that it did not indicate any particular change in how tightly the plates are locked together. It said it would continue monitoring seismic activity and ground movement.
That distinction matters. An earthquake occurring within a known hazard region is not, on its own, evidence that a much larger event is imminent. The agency has not characterised this tremor as a sign that a Nankai Trough megaquake is about to occur. Equally, the absence of an unusual change does not remove Japan’s longstanding underlying earthquake risk.
Aftershock warning for the coming week
JMA advised people in areas that experienced strong shaking to stay alert for roughly one week, particularly the first two to three days, when further sizeable tremors can occur. It warned that slopes weakened by the shaking could be vulnerable to rockfalls or landslides, especially if rain follows.
The agency had registered one subsequent earthquake felt at intensity 2 by 2.35am on Sunday. That was an early observation, not a count for the entire day. Residents were advised to follow updated official earthquake and local safety information rather than treat the general aftershock warning as a prediction of a specific larger quake.
Sources
- Japan Meteorological Agency, 8 November 2026
- Shizuoka Prefecture, second damage report at 16:00 JST
- TV Asahi, injuries in Aichi and Shizuoka
- Japan’s Ministry of Land, Infrastructure, Transport and Tourism, initial transport assessment
- Associated Press, 8 November 2026
- Shizuoka Asahi Television, local damage and transport
Reporting updated 8 November 2026. Magnitude, depth and injury figures remain subject to revision as assessments are completed.
