Dujuan was a TS tropical cyclone that formed in the East China Sea in 2009. The storm reached maximum sustained winds of 93 km/h (50 kt) with a minimum central pressure of 980 hPa. Tracking across the East China Seain the Western Pacific basin (, it potentially affected Japan, Korea, Taiwan and eastern China. The storm traveled from approximately 17.3°128.1° to 44.3°165.7°, crossing a range of 27 latitude and 38 longitude.