Overview
- The offshore quake struck around 11:15 p.m. local time about 80 km off Aomori at roughly 50–54 km depth, registering an upper 6 on Japan’s 1–7 intensity scale in parts of Aomori.
- Tsunami warnings for Hokkaido, Aomori and Iwate were downgraded then lifted after observed waves generally ranged 20–70 cm, including 70 cm at Kuji in Iwate.
- Authorities advised roughly 90,000 residents to evacuate or seek shelter, and official reports put injuries in the dozens, with up to 30 people hurt.
- Rail services were suspended in parts of the region, localized power outages and a few fires were reported, and nuclear facilities logged no abnormalities; regulators noted about 450 liters of water spilled at the Rokkasho fuel facility without safety impact.
- The JMA issued a subsequent‑earthquake advisory warning of likely aftershocks over the next several days and a small possibility of a larger event in the near term.