A powerful 6.8-magnitude earthquake struck off southwestern Japan late Monday, triggering tsunami warnings but causing no major damage. The quake, recorded at 9:19 pm local time (1219 GMT), was centered 18 kilometers (11 miles) off the Kyushu region, according to the US Geological Survey (USGS).
The Japan Meteorological Agency (JMA) initially cautioned residents about possible tsunami waves of up to one meter (three feet) and urged people to avoid coastal waters. However, only minor tsunamis, measuring about 20 centimeters, were observed at ports in the region, according to the JMA.
Live broadcasts showed calm seas, with vessels and traffic operating normally. Minor damage, such as a broken window at a train station and items falling from shelves, was reported. NHK, Japan’s national broadcaster, noted that one man suffered a minor injury after falling in his home.
The latest tremor reignited discussions on Japan’s vulnerability to megaquakes. In August, the JMA issued a rare advisory following a magnitude 7.1 quake, warning of increased risks of a subduction megathrust quake along the Nankai Trough, a major undersea fault. These quakes, historically occurring in pairs, can generate catastrophic tsunamis.
While Monday’s quake did not meet criteria for another Nankai Trough alert, the JMA reminded the public of the constant earthquake risk, urging daily preparedness.
Situated on the Pacific “Ring of Fire,” Japan is among the most seismically active nations globally, experiencing around 1,500 quakes annually. Though most are minor, larger quakes’ impact depends on their depth and proximity to populated areas.
Japan’s strict building codes and frequent emergency drills aim to minimize damage from seismic events. However, the country remains haunted by the 2011 disaster when a 9.0-magnitude undersea quake off northeastern Japan triggered a tsunami, claiming 18,500 lives and causing a nuclear meltdown at the Fukushima plant.
As Monday’s quake serves as a reminder of the ever-present danger, Japan continues to prioritize preparedness, ensuring its infrastructure and citizens remain resilient.
