Overview
- NHK reports 50 people injured, with 36 in Aomori and the rest in Hokkaido and Iwate, and no deaths or missing persons confirmed.
- The offshore earthquake struck late on December 8 with a magnitude of about 7.5 at a depth near 50–54 kilometers east of Aomori.
- Japan recorded a maximum coastal wave of roughly 70 centimeters and cleared all tsunami alerts about six hours after the quake.
- The Geospatial Information Authority measured roughly 9 centimeters of crustal displacement near the epicenter, and aftershocks continued up to magnitude 5.3.
- Rail service was disrupted, including temporary Shinkansen stoppages, and authorities reported no abnormal conditions at nuclear facilities; separate quakes were logged near Kamchatka (M5.7) and the northern Kurils (M4.4).