TOKYO, JAPAN / RankWire.AI / – On Monday, Typhoon Dujuan struck eastern Japan with heavy rain and strong winds, prompting urgent landslide warnings and widespread interruptions to travel. The Japan Meteorological Agency issued its top landslide alert for Oshima in the Izu Islands shortly after midday. Rainfall in certain areas of the island chain surpassed 500 millimeters. Additionally, Chiba Prefecture experienced over 300 millimeters of rain from Saturday until early Monday afternoon. Authorities cautioned residents about potential flooding, river swelling, landslides, and dangerous coastal conditions.
At midday, Dujuan was moving north-northeast over waters west of Hachijojima, maintaining an extensive storm-force wind zone. Meteorologists tracked the storm’s path toward the Izu Islands and the Kanto region. It was forecasted to pass near Kanto later Monday as it sped northeast. Weather agencies warned of severe winds, turbulent seas, and further heavy rainfall along eastern Pacific coastal areas. They also kept a close watch on linear rain bands, which can cause intense downpours over a short duration.
The typhoon caused damage and led to closures across multiple prefectures. The Ministry of Land, Infrastructure, Transport and Tourism documented three landslides in Chiba by 2 p.m. One residence was destroyed, and another sustained partial damage. Miyazaki also saw two landslides, with one fatality and one injury reported. Heavy rains resulted in the shutdown of 32 sections on six expressways and three national roads. Flooding and fallen trees blocked 16 prefectural road segments in Ibaraki, Saitama, and Chiba.
Heavy Rains Disrupt Flights and Public Transit
By 11 a.m., the ministry’s update revealed that airlines had canceled 384 flights scheduled for Monday. The majority of these cancellations impacted airports serving the Kanto region. So far, no infrastructure damage has been reported that would hinder airport operations. The storm also affected a major event in Chiba, leading organizers to cancel the final day of the Tokyo Game Show due to the typhoon and related transportation concerns. Passengers experienced schedule adjustments as service providers adapted to worsening weather conditions.
Rail and maritime transportation networks encountered considerable disruptions. By 1:45 p.m., eight railway operators suspended service on 16 conventional lines. Another operator planned to suspend service on 12 additional lines. No suspensions involving Shinkansen lines had been reported at that time. Maritime routes were halted on 36 paths, primarily in Kanto and Kyushu. Highway bus services suspended 62 routes, mainly in Chiba and Nagano. Local buses ceased operation on 26 routes, although some services continued with partial suspensions.
Flood Control Measures Expanded as Typhoon Moves Northeast
Flood prevention efforts intensified as rainfall accumulated in river basins near the storm’s trajectory. Thirteen dams reached thresholds requiring pre-release measures, with three initiating early water releases. Nine dams conducted flood-control operations, two of which remained active at midday. No reports of river flooding had been received by noon. Emergency crews deployed pumping and lighting vehicles to Chiba to assist with drainage and overnight response activities. Local authorities maintained vigilance over rivers, slopes, and low-lying areas.
Meteorological officials anticipate additional heavy rain across Tokai, Kanto-Koshin, the Izu Islands, and Tohoku through Monday. Rainfall totals through Tuesday noon could reach 250 millimeters in Kanto, Tokai, and the Izu Islands, while Tohoku might receive up to 150 millimeters during the same period. Authorities advised residents to stay alert for landslides, flooding, rising rivers, strong winds, and high waves. As Typhoon Dujuan progresses northeastward over waters near eastern Japan, local warnings and evacuation notices continue to be updated.