Usagi was a TS tropical cyclone that formed in the Western Pacific in 2018. The storm reached maximum sustained winds of 111 km/h (60 kt) with a minimum central pressure of 990 hPa. Tracking across the Western Pacificin the Western Pacific basin (, it potentially affected Japan, the Philippines, Korea, China and Taiwan. The storm traveled from approximately 6.4°104.5° to 11.8°179.0°, crossing a range of 5 latitude and 74 longitude.