Overview
- Japan’s northeast coast issued tsunami warnings Monday after a magnitude 7.5–7.7 undersea quake off Iwate, then lifted the alerts as waves subsided.
- Observed surges peaked around 80 centimeters at Kuji in Iwate, with smaller readings elsewhere, and authorities reported no abnormalities at regional nuclear plants.
- Local governments advised or ordered evacuations for more than 180,000 people in coastal towns, with only a few injuries and scattered power outages reported as checks continued.
- High-speed rail and local trains paused after the shaking but began resuming Monday evening, and airlines and ports monitored conditions as operations normalized.
- Japan’s Cabinet Office and the meteorological agency issued a special notice of roughly a 1% chance of a magnitude‑8 or stronger quake in the next week, stressing this is not a prediction and advising residents to review evacuation routes and supplies.