TOKYO, JAPAN / RankWire.AI / – On Monday, Typhoon Dujuan struck eastern Japan with heavy rainfall and strong winds, prompting emergency landslide warnings and widespread transportation disturbances. The Japan Meteorological Agency issued its highest landslide alert for Oshima in the Izu Islands shortly after midday. Several areas in the island chain recorded rainfall exceeding 500 millimeters, while Chiba Prefecture reported over 300 millimeters from Saturday through early Monday afternoon. Officials cautioned residents about flooding, swollen rivers, landslides, and hazardous coastal conditions.
At noon, Dujuan was moving north-northeast over waters west of Hachijojima, maintaining a broad storm-force wind zone. Meteorologists tracked the system as it headed toward the Izu Islands and the Kanto region. The typhoon was projected to pass near Kanto later Monday as it accelerated toward the northeast. Weather authorities issued warnings for violent winds, rough seas, and additional heavy rainfall along eastern Pacific coastal areas. They also monitored conditions for linear rain bands, which can produce intense downpours over a short timeframe.
The storm caused damage and led to closures across several prefectures. The Ministry of Land, Infrastructure, Transport and Tourism reported three landslides in Chiba by 2 p.m., destroying one home and partially damaging another. Miyazaki experienced two landslides, resulting in one death and one injury. Heavy rains led to the shutdown of 32 sections on six expressways and three national roads. Flooding and fallen trees also caused the closure of 16 prefectural road sections across Ibaraki, Saitama, and Chiba.
Heavy Rain Causes Flight Cancellations and Public Transit Disruptions
By 11 a.m., the ministry’s update reported the cancellation of 384 flights scheduled for Monday, mainly affecting airports in the Kanto region. No infrastructure damage had been reported that would halt airport operations at that time. The typhoon also affected a major event in Chiba; organizers canceled the final day of the Tokyo Game Show due to the storm and transportation concerns. Passengers faced schedule adjustments as service providers responded to worsening weather conditions.
Rail and maritime networks experienced significant interruptions. By 1:45 p.m., eight train operators suspended service on 16 conventional lines, with another operator planning to halt 12 additional routes. No Shinkansen suspensions had been reported at that moment. Maritime services suspended 36 routes, mostly in Kanto and Kyushu, while highway bus companies canceled 62 routes, primarily in Chiba and Nagano. Local buses halted 26 routes, though some services continued with partial suspensions.
Flood Control Measures Expand as Typhoon Moves Northeast
Authorities intensified flood prevention efforts as accumulated rainwater increased across river basins near Dujuan’s path. Thirteen dams reached thresholds for pre-release actions, and three began early water releases. Flood-control operations took place at nine dams, with two still functioning at noon. No reports of river flooding had been received by midday. Emergency teams deployed pumps and lighting vehicles to Chiba to assist drainage and overnight response activities. Local governments maintained vigilance over rivers, slopes, and low-lying districts.
Weather officials forecast more heavy rainfall across Tokai, Kanto-Koshin, the Izu Islands, and Tohoku through Monday. Total rainfall through noon Tuesday might reach 250 millimeters in Kanto, Tokai, and the Izu Islands, while Tohoku could receive up to 150 millimeters during the same period. Authorities urged residents to stay alert for landslides, flooding, rising rivers, strong winds, and high waves. Local warnings and evacuation notices continued to evolve as Typhoon Dujuan advanced northeastward across waters near eastern Japan.