Japan’s Megaquake Warning: How Prepared is Country for a Potential Catastrophe?

Japan experienced a significant earthquake on August 8, 2024, with a 7.1-magnitude tremor striking off its southern coast near Kyushu. The earthquake, which occurred at a depth of about 18 miles, led to some injuries and a tsunami advisory for the coastal areas of Kochi and Miyazaki prefectures. Despite the shaking and minor disruptions, there were no major damages reported, and essential services such as electricity, water, and communications remained intact.

Following this earthquake, the Japan Meteorological Agency (JMA) issued its first-ever megaquake warning, raising concerns about a potential major earthquake in the near future. This warning suggests an increased risk of a massive earthquake along the Nankai Trough, which could impact a broad area from the Kanto region to Kyushu and cause significant tsunami waves.

While the warning does not predict an immediate earthquake, it highlights a heightened risk and encourages residents to review their quake preparedness. Experts previously estimated a 70-80% chance of a major quake along the Nankai Trough within the next 30 years, with potentially catastrophic consequences. The Japanese government has responded by prioritizing crisis management, with Prime Minister Fumio Kishida canceling his planned trip to Central Asia to focus on the situation at home.

Japan’s experience with earthquakes has led to stringent building codes and disaster preparedness measures, which are expected to play a crucial role in mitigating the impact of a potential megaquake.