Full Breakdown
Typhoon Dujuan Brings Record Rain and Disruptions to Tokyo Region
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Core Event
On September 21, Typhoon Dujuan moved to within about 130 km south of Katsuura City, positioning it near the Boso Peninsula in Chiba Prefecture, east of Tokyo. The storm carried winds of roughly 144 km/h (89 mph) and was forecast to deliver record-breaking rainfall as it advanced northward across the Kanto region, which includes Tokyo and surrounding prefectures.
Data & Statistics
- Evacuations: More than 1.6 million residents in and around the capital were urged to evacuate, though the orders were not mandatory.
- Power outages: One report cited over 4,000 households in Chiba without electricity, while another indicated more than 9,000 households near Tokyo were without power.
- Flight cancellations: At least 260 domestic flights and 15 international flights were cancelled on September 21. Specific airline data varied: Japan Airlines cancelled 120 domestic and 15 international flights, All Nippon Airways cancelled 140 domestic flights (one source); another source listed Japan Airlines cancelling 135 flights and All Nippon Airways 140.
- Rainfall: Since September 19, some locations on the Izu islands and in Chiba recorded more than 300 mm of rain.
- Injuries and damage: One person suffered minor injuries, and nine houses were reported damaged in Chiba.
Official Statements & Responses
The Fire and Disaster Management Agency issued landslide warnings for Tokyo, Chiba, Kanagawa and Shizuoka prefectures. A Scoot spokesperson said the airline had reached out to affected customers, offering rebooking or full refunds. Kamakura City Mayor Takashi Matsuo warned that flooding made car travel dangerous. Prime Minister Sanae Takaichi’s departure for New York to attend the UN General Assembly was delayed by four hours because of the storm.
Verbatim Quotes
- “There is flooding in various parts of the city, so travelling by car is dangerous,” — Kamakura Mayor Takashi Matsuo
Impact on Events and Travel
The Tokyo Game Show, which began on September 17, was called off on its final day, September 21. A major outdoor music festival and a baseball match scheduled in Chiba were also cancelled. Railway operators suspended services on several lines, and rough waves battered the coast of Kamakura city. The Asian Games in Aichi Prefecture postponed the equestrian competition to September 22. Collectively, the storm’s heavy rain, strong winds, and associated disruptions highlighted the vulnerability of Japan’s densely populated coastal regions to extreme weather events.