High Quality Content by WIKIPEDIA articles! Typhoon Pongsona (international designation: 0226, JTWC designation: 31W) was the last typhoon of the 2002 Pacific typhoon season, and was the costliest United States disaster in 2002. The name "Pongsona" was contributed by North Korea for the Pacific tropical cyclone list and is the Korean name for the garden balsam. Pongsona developed out of an area of disturbed weather on December 2, and steadily intensified to reach typhoon status on December 5. On December 8 it passed through Guam and the Northern Marianas Islands while near its peak winds of 175 km/h (110 mph 10-min). It ultimately turned to the northeast, weakened, and became extratropical on December 11.