Overview
- Authorities raised the official injury count to 51 as assessments continued, with reports of cracked roads, shattered windows and isolated fires.
- The JMA’s one-week advisory covers 182 municipalities from Hokkaido to Chiba and is framed as a preparedness call rather than a prediction.
- Tsunami alerts were downgraded and lifted after waves of about 20–70 centimeters were recorded at several northern ports.
- Notable aftershocks followed, including a magnitude 6.6 within hours of the main quake and a magnitude 6.5 in Hokkaido on Wednesday.
- An emergency task force was activated as trains were temporarily suspended, power outages were largely restored, and nuclear facilities reported no abnormalities after inspections.