In brief
An earthquake measuring 5.4 on the Richter scale struck the north‑east coast of Honshu, Japan, on October 29, 2026, according to the German Research Centre for Geosciences and the Japan Meteorological Agency. The quake was felt across Chiba Prefecture and neighboring regions, but no tsunami threat was raised. Discrepancies in the preliminary magnitude—reported as 5.4 or 5.5—were noted in early media reports.
The north‑east coast of Honshu, Japan, experienced a shaking event early on Thursday, October 29, 2026, that was felt by residents in Chiba Prefecture and surrounding areas. According to reports, the quake triggered sensations that rippled through Tokyo and the neighboring prefectures of Tochigi, Ibaraki, and Saitama.
The German Research Centre for Geosciences (GFZ) identified the earthquake as having a magnitude of 5.4 and an epicenter at a depth of 49.4 kilometers. The center of the quake was located at coordinates 35.67° N, 140.59° E, placing it near the east coast of Honshu and close to the capital region of Tokyo. The event was recorded at 15:07 GMT on Wednesday, which corresponds to early morning local time in Japan.
Japanese weather authorities reported an initial reading of 5.4 on the preliminary scale, which was later adjusted by the Japan Meteorological Agency to a preliminary magnitude of 5.5 before settling at 5.4. The agency noted a depth of around 52 kilometers, which was in close agreement with GFZ’s estimate. Kyodo News described the intensity as “lower 5” on the Japan Meteorological Agency’s seismic intensity scale, a measure that indicates noticeable shaking but minimal damage potential.
An automated alert issued by the Japan Meteorological Agency on October 29, 2026, at 12:07 a.m. local time, stated that the quake occurred in Chiba Prefecture at a depth of approximately 50 kilometers and that “lower 5” intensity was the reading. The alert also clarified that no threat of a tsunami was present, and consequently no tsunami warning was issued by authorities.
Shaking was reported throughout Chiba Prefecture, with the most intense tremors registered in the city of Yokoshibahikari, where residents described the experience as a “strong jolt.” In other parts of the prefecture, the motion was felt as weak or moderate. An early report from the weather agency noted that the initial magnitude in the first electronic notification was 5.4, which matched the later confirmation from the GFZ center.
In the days following the event, local emergency offices confirmed that there were no reports of structural damage or casualties. The absence of a tsunami warning and the relatively moderate intensity help explain the lack of incidents. Rescue and assessment teams remain on standby in case additional information emerges, but as of the latest updates, the region is experiencing only minor inconvenience due to the seismic activity.
