Overview
- The offshore Sanriku earthquake produced severe shaking measured at shindo 6-strong in Aomori Prefecture.
- The government’s Hokkaido–Sanriku-oki aftershock advisory covers Hokkaido, Aomori, Iwate, Miyagi, Fukushima, Ibaraki and Chiba.
- Residents are instructed to remain prepared to evacuate immediately for one week while continuing social and economic activity.
- NHK reports about 50 people injured across Aomori, Iwate and Hokkaido, with water outages, school closures and delivery delays in some areas.
- Local authorities are opening evacuation centers and cautioning against false or AI-generated videos and unverified posts on social media.