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Nagoya City records highest hourly rainfall in history during torrential rains in central Japan

Nagoya City recorded 104.5 millimeters of rain in a one-hour period on September 8, 2026, setting a new station record for the highest hourly rainfall since record-keeping began in 1890. The Japan Meteorological Agency and the Ministry of Land, Infrastructure, Transport and Tourism issued a Level 5 flood special warning for the Shonai River system, which runs through Gifu and Aichi prefectures. The torrential rain caused flooding across Nagoya, disrupting roads, buildings, and rail services. The Tokaido Shinkansen services were suspended after rainfall gauges exceeded operating thresholds, while the JR Chuo Line remained suspended between Nagoya and Nakatsugawa. Nagoya City issued Level 5 Emergency Safety Measures for communities along the Kanare, Yada, and Ueda rivers, which were later downgraded to Level 4 evacuation orders. Four people were injured across Aichi Prefecture during the event. Nagoya City announced that municipal schools and kindergartens would be closed on September 9 due to the heavy rainfall. Authorities continue to advise residents to stay away from rivers and low-lying ground.

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