An intense rainstorm battered Nagoya on Tuesday, producing an all-time hourly rainfall total of 105 millimetres and upending normal life across the city. The volume and rapidity of the downpour left streets inundated and strained urban drainage systems.
The exceptional hourly total — measured at 105 mm — represents the highest single-hour accumulation recorded in Nagoya. The deluge came in a short, concentrated period and resulted in surface flooding in low-lying areas, making travel difficult for motorists and pedestrians.
Public transport and road traffic were affected as people sought alternatives or delayed journeys, and many businesses and workplaces experienced disruption to operations. Municipal services were mobilised to handle immediate impacts, including clearing drains and addressing localized flooding, while assessments of broader damage and cleanup needs were underway.
Such intense, short-duration rainfall events can overwhelm urban infrastructure and create rapid-onset hazards. Authorities and utility providers were monitoring the situation and advising residents to take precautions where necessary as waters receded and recovery efforts began.