Goo Jae-eui Reports Strong Earthquake in Japan, According to Social Media Posts
South Korean actor Goo Jae-eui shared on July 16, 2023, that he experienced a magnitude 5.5 earthquake while in Japan, according to a social media post verified by multiple sources. The Japan Meteorological Agency (JMA) confirmed the seismic event occurred at 10:32 a.m. local time in Kumamoto Prefecture, with tremors felt across Kyushu.
Earthquake Details and Seismic Activity

The JMA reported the earthquake registered a magnitude 5.5 on the Japan Seismic Intensity Scale, with the epicenter located 30 kilometers northeast of Kumamoto City. The agency noted no immediate reports of casualties or significant structural damage, though local authorities issued advisories for residents to remain cautious.
Actor’s Firsthand Account
Goo Jae-eui, known for his role in the 2021 drama *It’s Okay to Not Be Okay*, shared a message on his verified social media platform, stating, “I’ve never felt an earthquake this strong before… I was shocked.” The post included a screenshot of a JMA emergency alert, which read, “Strong tremors expected in Kumamoto and Oita prefectures.”
Context of Seismic Activity in Japan
Japan, situated on the Pacific Ring of Fire, experiences frequent seismic activity. The 2023 Kumamoto earthquake follows a series of smaller quakes in the region, including a magnitude 4.3 tremor on July 12, 2023, according to the JMA. Experts emphasize that while the 5.5-magnitude event was notable, it falls within the range of typical seismic patterns for the area.
Public Response and Safety Measures
Local officials in Kumamoto urged residents to avoid unstable structures and check for gas leaks following the quake. The Japan National Oceansic and Atmospheric Administration (JMA) reiterated that early warning systems, which detected the tremor 10 seconds before significant shaking, have improved public safety.
Why It Matters
The incident highlights the importance of seismic preparedness in Japan, where over 90% of the population lives in areas prone to earthquakes. Similar to the 2011 Tōhoku earthquake, which triggered a tsunami and nuclear crisis, modern early warning systems and infrastructure upgrades have reduced risks, though vulnerabilities persist.
Japan Meteorological Agency – Earthquake Information
Reuters – Japan’s 5.5-Magnitude Earthquake