Two successive typhoons brought heavy rain to the Kanto region of Japan on Sept. 7, 2024 [4], prompting widespread flood-prevention measures across Tokyo and Chiba.
The surge in vigilance follows a record-breaking flood in September 2023, which left local residents and business owners wary of potential water damage. This history of extreme weather has turned routine storm preparations into critical defense strategies for the region's infrastructure.
In Tokyo's Shinagawa ward, residents near the Tateigawa river monitored water levels closely. Some local business owners stacked sandbag walls five to six layers high [1] to protect their properties. One female shop owner said, "I placed sandbags because I was worried about the typhoon. I hope the typhoon passes without anything happening."
Rain intensified around 14:30 JST [2] and began to ease after 18:00 JST [3]. During the rush-hour commute, several Tokyo railway stations closed shutters to protect facilities and passengers from the elements. Despite the precautions, some residents near the Tateigawa said the water level remained mostly unchanged from normal levels.
The weather event was driven by the passage of Typhoon 7 and an earlier Typhoon 6 [1]. While some reports indicated the possibility of storm-force winds and warning-level rainfall, other local observations noted a lack of significant wind and light rain during certain periods of the day.
Mobara City in Chiba Prefecture also experienced the impact of the weather systems. The coordinated effort between city officials, transport hubs, and private citizens reflects a regional shift toward aggressive mitigation to avoid the devastation seen in previous years.
“I placed sandbags because I was worried about the typhoon.”
The rapid deployment of flood defenses in 2024 demonstrates a heightened state of 'disaster memory' among Kanto residents. By implementing high-layer sandbagging and station closures even before peak intensity, Tokyo is treating the cumulative effect of successive storms as a higher risk than isolated events, signaling a more conservative approach to urban climate resilience.
