In Brief:
- The storm caused two confirmed deaths, while local municipalities issued non-mandatory evacuation advisories to more than 1.6 million residents.
- The Japan Meteorological Agency issued its Level 5 emergency landslide warning for Oshima in Tokyo's Izu Islands after 600 mm of rainfall fell in 24 hours.
- Airlines cancelled over 275 domestic flights, bullet train operations between Tokyo and Osaka were suspended, and nearly 45,000 households lost power.
Typhoon Dujuan, designated as Japan's 25th typhoon of the year, passed south of Tokyo near Katsuura City on September 21, packing winds of 144 km/h and dumping over 300 mm of rain across Chiba, Kanagawa, and Shizuoka prefectures. Authorities confirmed two deaths in Japan as floodwaters inundated roads in Kamakura and Ichikawa, while the Japan Meteorological Agency declared a Level 5 emergency landslide warning—its highest alert—for Oshima town in Tokyo's Izu Islands after 24-hour rainfall reached a September record of 600 mm.
The storm led to the cancellation of 135 Japan Airlines flights and 140 All Nippon Airways flights, halted bullet train lines operating between Tokyo and Osaka, and knocked out electricity to approximately 45,000 customer accounts across the Tokyo Electric Power Company service network. Public events, including the final day of the Tokyo Game Show, a major music festival in Chiba, and an Asian Games equestrian competition in Aichi Prefecture, were either cancelled or rescheduled. The Japan Meteorological Agency confirmed that the storm moved northeastward away from the coast into the Pacific Ocean on September 22.
