Namtheun was a TS tropical cyclone that formed in the Philippine Sea in 2010. The storm reached maximum sustained winds of 65 km/h (35 kt) with a minimum central pressure of 996 hPa. Tracking across the Philippine Seain the Western Pacific basin (, it potentially affected the Philippines, Taiwan and Japan. The storm traveled from approximately 24.8°119.1° to 26.1°124.5°, crossing a range of 1 latitude and 5 longitude.