The Japan Meteorological Agency (JMA) rated the quake's intensity as lower 5 on its scale of 0 to 7, reflecting a moderate level of ground shaking.
The earthquake began at approximately 9:19 p.m. local time, with its epicenter located a few miles offshore at a depth of about 19 miles, according to both the U.S. Geological Survey and Japanese authorities.
The JMA issued a tsunami advisory for the Miyazaki and Kochi prefectures, warning of potential wave heights reaching up to 1 meter (3.3 feet). By 10 p.m., one tsunami wave measuring approximately 8 inches had already been observed along some coastal areas and ports. Officials urged residents to avoid coastal zones and rivers, emphasizing the continued risk of additional waves.
In Kochi Prefecture, some residents were advised to evacuate as a precautionary measure. Trains in several areas were halted following the quake, with authorities indicating it was unclear when services would resume.
An hour after the earthquake, Japanese officials reported they were still assessing the extent of disruptions. While there were no immediate reports of significant damage, residents were cautioned to remain vigilant for aftershocks, avoid hazardous debris such as broken glass, and prioritize personal safety.
Importantly, authorities confirmed that there were no abnormalities in radiation levels or operations at nearby nuclear power facilities.
The situation remains under close observation, and officials continue to gather updates on any further impacts.
