Bolaven was a C2 tropical cyclone that formed in the East China Sea in 2012. The storm reached maximum sustained winds of 185 km/h (100 kt) with a minimum central pressure of 910 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 13.2°124.5° to 45.4°142.4°, crossing a range of 32 latitude and 18 longitude.