Japan issues tsunami advisory after 6.8 earthquake

A 6.8-magnitude earthquake struck off the coast of Miyazaki prefecture in southwestern Japan late Monday, prompting a tsunami advisory.

The Japan Meteorological Agency (JMA) warned of possible waves up to one metre and urged residents to avoid coastal areas.

Two minor tsunamis, about 20 centimetres high, were observed in regional ports. No injuries or damage were reported, and local broadcasts showed calm seas and normal activity.

Japan, located on the Pacific “Ring of Fire,” experiences frequent seismic activity. The JMA is investigating potential links between this quake and earlier tremors, as the region faces elevated risks of “megaquakes.”

The country remains vigilant, with strict construction codes and emergency drills, yet the 2011 disaster—when a 9.0 earthquake triggered a devastating tsunami—continues to shape its preparedness efforts.