A 5.4‑magnitude earthquake rattled the north‑east coast of Honshu on Oct. 29, 2026, striking around 3:07 a.m. local time (15:07 GMT). Researchers from the German Research Centre for Geosciences (GFZ) identified the epicenter at 35.67° N, 140.59° E, a depth of 49.4 km.
Japan’s own emergency agency, the Japan Meteorological Agency (JMA), first reported a preliminary magnitude of 5.4 at 12:07 a.m. local time, then updated it to 5.5. The JMA estimated the quake’s depth at about 50 km and classified the shaking as “lower 5” on Japan’s scale, meaning people felt strong but no serious damage.
Both institutes said the event posed no tsunami risk, and no warning was issued. The tremor was felt across Chiba Prefecture, in Tokyo, and in neighboring prefectures such as Tochigi, Ibaraki and Saitama.
GFZ’s data confirm the quake’s precise location, while the JMA’s early numbers reflect the evolving nature of seismic reporting. Together, the information shows a moderate but noticeable shaking that surprised many residents in the area.
Although the quake was relatively shallow, its strength was enough to be felt over a wide area, making it a reminder that Japan’s eastern coast remains in a seismically active zone. For now, the country reports no damage or aftershocks, but authorities remain ready to update the public if conditions change.
