Activity was somewhat below average in September, with only one tropical cyclone making landfall, Maemi. However, Maemi was the strongest tropical cyclone of the season and was the costliest with roughly US$4.8 billion in damage, mostly in South Korea. Tropical cyclogenesis and activity continued to decline after August, with October featuring only three tropical storms. However, two, Ketsana and Parma, reached typhoon intensity; both stayed away from land. November featured less storms but was climatologically average, with two typhoons developing. The second typhoon, Lupit, devastated portions of Yap State, resulting in approximately $1.7 million in damage. In December, the JTWC and PAGASA monitored a sole tropical system east of the Philippines, though the JMA did not monitor or classify any tropical cyclones during the month.