Oshima Town under evacuation warning as Dujuan drenches Izu Islands

Officials urged residents of Oshima Town in Tokyo's Izu Islands to evacuate to safer locations as Dujuan brought heavy rain on 21 September 2026. The storm skirted Japan's Pacific coast without mainland landfall, with its track crossing the Izu Islands. Island slopes flood fast, so even an offshore storm can turn dangerous quickly.