Muifa was a TS tropical cyclone that formed in the Philippine Sea in 2004. The storm reached maximum sustained winds of 148 km/h (80 kt) with a minimum central pressure of 950 hPa. Tracking across the Philippine Seain the Western Pacific basin (, it potentially affected the Philippines, Taiwan and Japan. The storm traveled from approximately 8.4°99.6° to 15.9°134.2°, crossing a range of 8 latitude and 35 longitude.