Overview
- The Japan Meteorological Agency initially put the quake near magnitude 6.3 before revising it to 4.5, while USGS real-time data showed about 5.8.
- Parts of Shimane recorded an upper-5 on Japan’s 1–7 seismic intensity scale, indicating disruptive shaking in affected areas.
- No tsunami warning or advisory was issued after the earthquake.
- National broadcaster reports indicated no immediate major damage or casualties, and authorities are continuing inspections and monitoring for aftershocks.
- The incident unfolds in a period of heightened seismic vigilance in Japan, following the JMA’s 2024 advisory about potential Nankai Trough megaquakes.