In 2024, the Japan Meteorological Agency issued a groundbreaking earthquake risk advisory for the first time, explicitly warning that there is a very high probability of a magnitude-8 or greater earthquake occurring along the Nankai Trough within the next 30 years. This unprecedented official alert aims to heighten public awareness of potential disasters and encourage coordinated disaster preparedness efforts between the government and citizens. The Nankai Trough, located off Japan’s Pacific coast, marks the boundary between the Philippine Sea Plate and the Eurasian Plate and has historically triggered devastating earthquakes and tsunamis, such as the 1944 Showa Tonankai and the 1946 Showa Nankai quakes. Experts indicate that tectonic activity in the region has entered a new active phase, with the likelihood of a major earthquake exceeding 70% in the coming decades. In response, the Japanese government is accelerating updates to seismic building codes, improving evacuation systems, and urging households to stock emergency supplies. Importantly, this advisory does not predict an exact timing for the quake but reflects a long-term geological risk assessment—urging society to prepare proactively and enhance overall resilience.
日本气象厅于2024年首次发布了一项新的地震预警信息，明确指出南海海槽地区在未来30年内发生8级或以上大地震的可能性极高。这一前所未有的官方风险提示，旨在提高公众对潜在灾难的警觉性，并推动政府与民众共同加强防灾准备。南海海槽位于日本太平洋沿岸，是菲律宾海板块与欧亚板块交界处，历史上曾多次引发毁灭性地震和海啸，如1944年的昭和东南海地震和1946年的昭和南海地震。专家指出，当前地壳活动已进入新一轮活跃周期，未来数十年内发生特大地震的概率超过70%。为此，日本政府正加速修订建筑抗震标准、完善避难体系，并鼓励家庭储备应急物资。此次预警并非预测具体地震时间，而是基于长期地质数据的风险评估，提醒全民未雨绸缪，提升社会整体韧性。
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