Choi-Wan was a TS tropical cyclone that formed in the Philippine Sea in 2021. The storm reached maximum sustained winds of 74 km/h (40 kt) with a minimum central pressure of 998 hPa. Tracking across the Philippine Seain the Western Pacific basin (, it potentially affected the Philippines, Taiwan and Japan. The storm traveled from approximately 4.8°118.2° to 28.5°142.1°, crossing a range of 24 latitude and 24 longitude.