Typhoon Dujuan hits Kanto: JR East suspensions and Tokyo travel advice

Updated 21 September 2026, evening JST. Typhoon Dujuan is causing severe disruption across Kanto as it approaches Japan’s Pacific coast. Reuters reported that at least 275 flights had been cancelled on 21 September, while the Japan Meteorological Agency and local authorities warned of torrential rain, violent winds, flooding and landslide danger. Oshima in the Izu Islands was placed under a Level 5 landslide emergency warning, the highest alert level. Japan’s Fire and Disaster Management Agency’s 20:00 JST update on 21 September said 1,908,645 people were under evacuation orders and another 204,153 people were covered by Level 5 emergency safety measures. It listed one confirmed death in Nichinan, Miyazaki, one person in cardiopulmonary arrest after a landslide in Yokosuka, and one serious injury following a landslide in Miura. More than 9,000 households near Tokyo had also lost power earlier on Monday, while the final day of the Tokyo Game Show was cancelled because of the storm.

JR East disruption remains widespread, particularly in Chiba and on regional Kanto lines. Earlier on 21 September, the operator reported suspensions on sections of the Sobu Main, Uchibo, Sotobo, Togane, Narita and Kururi lines, while major Tokyo-area routes remained at risk of delays and cancellations into the early morning of 22 September. Travellers should treat the live JR East page, airline status and road-operator information as the final authority for any journey.

If you are travelling in Tokyo, Chiba, Saitama, Ibaraki, the Izu Islands or to Haneda or Narita, allow substantial extra time and avoid non-essential journeys into areas under severe weather warnings.

What is disrupted now?

JR East’s 21 September operational updates showed major disruption across Kanto. Earlier in the day, the Sobu Main Line was suspended between Sakura and Naruto, sections of the Uchibo and Sotobo lines were suspended, the Togane Line was stopped and the Kururi Line was suspended for the day. Narita Line services were also affected after a fallen tree, while trains serving Narita Airport experienced delays.

Because conditions are changing during the evening, do not rely on a static timetable in this article. Check JR East’s live Kanto status immediately before travelling.

Which routes were expected to face disruption?

JR East had warned that the Yamanote, Ueno-Tokyo, Shonan-Shinjuku, Tokaido, Keihin-Tohoku, Yokosuka, Chuo, Keiyo and other major Tokyo-area lines could face delays or cancellations into early 22 September. Planned suspensions also affected regional routes in western Tokyo, Chiba and Ibaraki during 21 September.

The key practical point is that disruption can spread beyond the line closest to the storm because trains share tracks, rolling stock and through-services.

What should Haneda and Narita passengers do?

Do not rely on normal transfer times. At least 275 flights were reported cancelled across Japan on 21 September as Dujuan approached eastern Japan. Even if your own flight still shows as operating, rail or road disruption can affect access to Haneda and Narita.

• Check your airline before leaving home or your hotel.
• Check JR East and airport rail operators before setting out.
• Allow substantial extra time and avoid tight connections.
• Keep tickets, booking references and travel-insurance details accessible.

Road closures remain possible

NEXCO Central warned that closures could affect the Tomei, Chuo and other expressways simultaneously as conditions developed. NEXCO East also listed rain-related closures on sections of the Ken-O Expressway, Chiba-Togane Road, Keiyo/Tateyama Expressway and the Tokyo Bay Aqua-Line connection in Chiba.

Drivers should check live NEXCO/iHighway information immediately before setting out and avoid non-essential road travel in areas under severe rain or landslide warnings.

Flood and landslide risk is now a major concern

The weather risk is no longer only about transport delays. Reuters reported more than 300 mm of rain in some areas, with authorities warning that intense rain bands could trigger flash flooding and landslides. Oshima in the Izu Islands was placed under a Level 5 landslide emergency warning.

Residents should follow municipal evacuation instructions and the Japan Meteorological Agency’s live disaster information. A Level 5 warning indicates an immediate threat to life and is not a signal to begin ordinary travel preparations.

Tokyo events are changing because of the typhoon

The Tokyo Metropolitan Government says the Asian Games eventing dressage session scheduled for 21 September was moved to 22 September because heavy rain was expected to delay arena preparation. The 21 September session is refund-eligible. On 22 September, eventing dressage is scheduled for 08:00-11:42 and cross-country for 13:00-16:20.

What international residents and visitors should do

• Check JR East live status immediately before every journey.
• Check airline and airport-transport status before travelling to Haneda or Narita.
• Follow municipal and JMA evacuation or landslide warnings.
• Check NEXCO/iHighway before driving.
• Recheck event organisers before travelling to sports, concerts or festivals.
• Keep phones and power banks charged.

Sources

• JR East Kanto train status
• Japan Meteorological Agency disaster information
• NEXCO Central typhoon road information
• Reuters: Dujuan disruption and JMA warnings, 21 September 2026
• Tokyo Metropolitan Government Asian Games information

This article is being refreshed as operators publish confirmed information. Always use the live operator and local-authority pages for your specific journey or safety decision.