The US Geological Survey (USGS) recorded a 5.1-magnitude earthquake around 52 km (32 mi) east-northeast of Hachinohe (Honshū Island) on Thursday, December 19. The quake hit at around 15:21 (local time) at a depth of 55 km (34 mi). No tsunami warning was immediately issued. Aftershocks are possible in the affected area over the coming hours and days.
Individuals in the region are advised to monitor the situation and prepare for potential aftershocks.
In the event of aftershocks, individuals are advised to protect themselves as much as possible from falling debris if indoors (e.g. under a table), move away from the windows, and not attempt to leave a building unless there is an immediate danger. If outdoors, move away from tall buildings, utility wires, and streetlights.