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Overview
- The quake struck at 11:15 p.m. local time about 80 km off Misawa in Aomori at roughly 50 km depth, according to the USGS and Japan Meteorological Agency.
- Tsunami alerts for Hokkaido, Aomori and Iwate were reduced to advisories after observed waves peaked around 40 cm at ports including Mutsu-Ogawara and Urakawa.
- Authorities said about 90,000 people evacuated coastal areas, with at least seven injuries reported, localized power outages and some rail service suspensions.
- JMA rated shaking at “upper 6” on Japan’s intensity scale in parts of Aomori, and a magnitude 3.6 aftershock was recorded following the main event.
- Nuclear operators reported no abnormalities at regional plants, and agencies are continuing to monitor sea levels and the risk of stronger aftershocks this week.