Tropical Storm Jangmi struck Japan on June 2–3, 2026, sweeping northward from Okinawa through Kyushu before making landfall over Wakayama Prefecture — becoming one of the most disruptive early-season tropical storms to strike the Japanese mainland in recent memory.
Impact
The storm, initially classified as a typhoon, weakened before landfall but still packed damaging winds, heavy rainfall, and flooding across a wide area of Japan. Japan's Fire and Disaster Management Agency confirmed at least 23 people injured nationwide and 57 houses damaged. More than 60,000 households in Okinawa and Kagoshima prefectures lost power, and floodwaters reached 30 centimeters in parts of the Greater Tokyo Area.
Authorities issued evacuation advisories for more than 400,000 residents across multiple prefectures, including the entire population of Miyazaki City (approximately 390,000 people). The storm also triggered Japan's first Level 5 Special Flood Warning under the country's new five-level disaster alert system, the highest designation for imminent catastrophic flooding risk.
Transportation was severely disrupted: nearly 900 domestic and international flights were cancelled, and several Shinkansen bullet train services were suspended across western and central Japan.
Response
The Japanese Red Cross Society dispatched emergency relief teams to affected prefectures, providing support at evacuation centers and distributing emergency supplies to displaced residents. Save the Children supports vulnerable communities in disaster-affected areas of Japan.
Support Relief Efforts
Support the communities affected by Tropical Storm Jangmi and Japan's disaster response capacity through the Tropical Storm Jangmi disaster page, where you can find ways to donate through the Red Cross and other relief organizations.
