The US Geological Survey (USGS) recorded a 5.5-magnitude earthquake 40 km (25 mi) northeast of Nemuro (Hokkaido Island) at approximately 11:36 (local time) on Tuesday, January 28. The quake struck at a depth of 78 km (48 mi). There were no immediate reports of injuries or damage. The Japan Meteorology Agency confirmed that the earthquake did not pose a tsunami risk.
Aftershocks are possible in the affected area over the coming hours and days.
Individuals in the affected area 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 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.