The season ran year @-@ round , with the first storm , Yanyan , developing west of the Marshall Islands on January 15 . In April , Typhoon Kujira became one of the longest @-@ lasting Pacific typhoons in history and attained climatological records for its unusually early impacts . Typhoon Imbudo in July caused several deaths and extensive damage across the Philippines and China . In September , Typhoon Maemi became one of the costliest typhoons in recorded history after striking South Korea ; Maemi was also the most intense tropical cyclone of the season with a minimum barometric pressure of 910 mbar ( hPa ; 26 @.@ 87 inHg ) . In late November , Typhoon Lupit devastated areas of Yap State in the Federated States of Micronesia . The season closed with the dissipation of a tropical depression east of the Philippines on December 27 .