Overview
- Japanese authorities later assessed the offshore quake at magnitude 7.5 after an initial 7.2 reading.
- Tsunami warnings and advisories covered Hokkaido, Aomori and Iwate, with observed waves of 20–70 centimeters as guidance changed through the night.
- At least 30 people were injured and about 90,000 residents evacuated, with no reported damage to nearby nuclear plants and power service restored after outages.
- The epicenter was about 80 kilometers off Aomori at a depth of 54 kilometers, according to official reports.
- In a separate event, a magnitude 6.36 quake in Greece at 10 kilometers depth was felt in Athens and parts of Turkey and Italy, with more than 110 small aftershocks logged in 24 hours.