A magnitude 4.6 earthquake struck southern Chiba Prefecture around 10:25 a.m. on January 29. It registered an intensity of 4 on Japan's seven-step seismic scale in Minami-Boso.
On Thursday, January 29, 2026, at around 10:25 a.m., a magnitude 4.6 earthquake hit southern Chiba Prefecture. According to the Japan Meteorological Agency, it measured an intensity of 4 on the Japanese seismic intensity scale in Minami-Boso, which indicates a moderate shaking on the seven-level scale.
The agency stated that no tsunami was expected following the quake. No damage reports have been confirmed yet, but residents are urged to check for safety.
This area has a history of seismic activity due to its location near the Pacific Plate boundary, necessitating ongoing monitoring.
