TOKYO — Tropical Storm Jangmi moved into the Tokyo region on June 2, 2026, dumping heavy rain and raising flood risks across east-central Japan. The storm paralyzed street traffic in Tokyo and prompted widespread disruptions to transportation and utilities.
Hundreds of flights were canceled and train services were suspended or delayed throughout the Tokyo region as the storm passed. More than 5,000 homes lost power, according to Tokyo Electric Power Company Holdings.
The Japan Meteorological Agency issued its highest-level flood warning for multiple areas in central and eastern Japan. The agency urged people living along rivers and in vulnerable locations to move to higher ground for safety. Residents near the Zenpukuji River in downtown Tokyo were advised to take shelter as television footage showed the river swollen with muddy water, nearing overflow.
According to the Japan Meteorological Agency, Tropical Storm Jangmi was located east of Shima city and moving northeast around midmorning, with maximum sustained winds of 90 kph (55 mph). The storm had previously made landfall in Wakayama prefecture at typhoon strength, with winds of 126 kph (78 mph), before moving inland and weakening.
The agency reported that the Owase area in central Japan received 50 centimeters (20 inches) of rain in the 24 hours leading up to June 2. Up to 20 centimeters (8 inches) of additional rain was expected through Thursday morning in some areas, including Tokyo. Forecasters said Tropical Storm Jangmi was expected to maintain tropical-storm strength for much of the day. The storm’s approach prompted evacuation advisories across multiple prefectures, and emergency response teams were deployed to assist residents in flood-prone zones.