Overview
- Japan’s meteorological agency measured a magnitude 6.2 quake off Shimane at 10:18 a.m. local time, while the USGS listed it at 5.8 then revised to 5.7.
- Authorities reported no tsunami alert and no major structural damage; shaking reached upper 5 on Japan’s Shindo scale in Yasugi, with evacuations seen in nearby Matsue and no issues at the Shimane nuclear plant.
- The JMA logged 33 aftershocks within 24 hours, including a magnitude 5.1 shortly after the main event.
- JR West briefly suspended sections of the Shinkansen due to a precautionary power cut, as the Self-Defense Forces conducted aerial checks and the government urged vigilance for additional tremors.
- In Mexico, the SSN counted 2,966 aftershocks from the Jan. 2 M6.5 San Marcos quake by early Jan. 6, logged new events on Jan. 7 (M3.0 in Chiapas and M4.0 near Pinotepa Nacional), and continued recovery after earlier water outages in Acapulco and two reported deaths.