TOKYO, JAPAN / RankWire.AI / – Eastern Japan experienced heavy rainfall and strong winds on Monday as Typhoon Dujuan made landfall, leading to emergency warnings for landslides and widespread disruptions in transportation. The Japan Meteorological Agency issued a Level 5 landslide alert for Oshima in the Izu Islands at 12:40 p.m. Already, parts of the island chain had seen rainfall totals exceeding 500 millimeters. Chiba Prefecture recorded over 300 millimeters from Saturday through early Monday afternoon. Authorities urged residents to stay alert for flooding, swollen rivers, and dangerous waves.
At midday, the large and powerful typhoon was moving north-northeast over waters west of Hachijojima, maintaining a storm-force wind zone as it headed toward the Izu Islands and the Kanto area. Forecasters indicated that the system would accelerate and pass near Kanto later on Monday. They warned of violent winds, very rough seas, and additional heavy rain across eastern Pacific coastal regions. Furthermore, linear rain bands could intensify rainfall across Tokai, Kanto, and the Izu Islands.
The transport ministry reported three landslides in Chiba Prefecture by 2 p.m., which resulted in the destruction of one home and partial damage to another. Additionally, two landslides occurred in Miyazaki Prefecture, leading to one death, one injury, and damage to one residence. Rainfall thresholds caused closures on 32 sections of six expressways and three parts of two national highways. Flooded roads and fallen trees also led to the closure of 16 prefectural road sections across Ibaraki, Saitama, and Chiba.
Heavy Rainfall Elevates Flood and Landslide Threats
Air travel faced significant interruptions, with carriers canceling 384 flights scheduled for Monday according to the ministry’s 11 a.m. update. Japan Airlines canceled 135 flights, ANA canceled 139, and other airlines canceled 110. Most cancellations involved airports in the Kanto region. At that time, airport officials had not reported any damage that would prevent flight operations. The final day of the Tokyo Game Show in Chiba was also canceled due to the typhoon.
Rail services were halted on 16 lines operated by eight companies by 1:45 p.m. One company planned to suspend service on an additional 12 lines, while no Shinkansen suspensions had been reported. Maritime operators suspended 36 routes, primarily serving Kanto and Kyushu. Highway bus services were discontinued on 62 routes, mainly in Chiba and Nagano. Local buses also suspended 26 routes, mainly in Tokyo and Chiba, with some services running partially.
Extensive Disruptions in Transport Systems Due to Typhoon
Flood control measures intensified as rainfall accumulated across river basins in the typhoon’s vicinity. Thirteen dams reached thresholds for pre-release measures, with three conducting early water releases. Nine dams carried out flood-control operations, two of which were still active at noon. By midday, the Ministry of Land, Infrastructure, Transport and Tourism reported no river flooding. Emergency teams deployed pumping and lighting vehicles to Chiba to assist with drainage and nighttime operations.
The weather agency warned of storm-level rainfall across Tokai, Kanto-Koshin, the Izu Islands, and Tohoku through Monday. Forecast totals through noon Tuesday indicated 250 millimeters for Kanto, Tokai, and the Izu Islands, and 150 millimeters for Tohoku. Authorities advised extreme caution regarding landslides, flooding, rising rivers, strong winds, and high waves. The official forecast projected the typhoon near Kanto on Monday night as it accelerated northeastward. As conditions evolved, officials continued issuing local warnings and evacuation alerts.
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