Japan Issues Warnings Across Eastern Regions as Typhoon Dujuan Intensifies Weather Threat

Japan was placed on heightened alert Monday as Typhoon Dujuan brought heavy rain and strong winds to eastern parts of the country.

More than 1.9 million people were urged to evacuate as authorities warned of flooding, landslides and other weather-related dangers.

The storm was moving close to the Pacific coast and was expected to pass near the Tokyo metropolitan region. The Japan Meteorological Agency warned that conditions could deteriorate rapidly, particularly as heavy rain intensified during the afternoon.

The Izu Islands experienced significant rainfall before the storm moved closer to the mainland. Izu Oshima recorded more than 600 millimeters of rain in 24 hours, while parts of Chiba also recorded more than 300 millimeters.

The rainfall created particularly serious concerns in mountainous and coastal areas.

Authorities issued high-level landslide warnings in parts of the Izu Islands. Several Kanto areas were also placed under warnings for heavy rainfall, flooding and landslides.

Weather officials urged residents to check the latest evacuation information from their local municipalities and to move to safer locations if required.

The threat was not limited to rural communities. Tokyo and surrounding urban areas faced the possibility of flooded roads and underground spaces.

Officials advised people to avoid underground facilities during severe rainfall because water can accumulate rapidly. Drivers were also warned against entering flooded streets.

Transportation services across eastern Japan were significantly affected.

Japan Airlines cancelled about 120 domestic flights, while All Nippon Airways cancelled around 140 flights. Railway operator East Japan Railway also announced service suspensions in several areas.

The disruptions affected holiday travel during Silver Week, potentially leaving travellers stranded or forcing them to change their plans.

The storm also affected major events. The Tokyo Game Show cancelled its Monday programme, while an equestrian event at the Asian Games was postponed.

Government activities were also affected. Prime Minister Sanae Takaichi delayed her departure for New York because of the weather conditions.

The JMA warned about the possibility of linear rain bands developing over Kanto and central Japan. These systems can cause intense rainfall over small areas and increase the danger of flash flooding.

Authorities therefore emphasized that residents should remain alert even if the storm’s centre moved away from their immediate location.

Another concern was the condition of rivers. Heavy rainfall can cause river levels to rise quickly, particularly after several days of continuous rain. Residents near waterways were advised to follow evacuation instructions and avoid approaching swollen rivers.

Landslide risks could also continue after rainfall begins to decrease because water remains trapped in saturated soil.

At least one person was reported dead in Miyazaki Prefecture in connection with the typhoon, and another person suffered minor injuries, according to information cited by The Japan Times.

Emergency agencies remained ready to respond to incidents involving flooding, landslides and infrastructure damage.

Japan has developed extensive disaster-prevention systems because of its exposure to typhoons, earthquakes and heavy rainfall. However, authorities continue to stress the importance of individual preparedness and early evacuation.

Residents were advised to monitor official weather information, avoid unnecessary travel and keep away from locations where water levels could rise suddenly.

As Typhoon Dujuan moved northeast, officials continued assessing the impact and updating evacuation guidance.

The situation remained dynamic, with rainfall and wind conditions capable of changing quickly.

For millions of residents across eastern Japan, the priority remained personal safety, timely evacuation and following instructions from local authorities as the storm passed through the region.