The 2010 Atlantic hurricane season was a highly active year of tropical cyclone formation in the North Atlantic Ocean. Second all time to 2005, this season featured the most hurricanes alongside 2005 and the most major hurricanes alongside 2005 and 1961. In addition, the 2010 season was the second known occurrence in which an Atlantic hurricane season was more active than the West Pacific - the only known occurrence prior to this was 2005. Another significant occurrence was the appearance of a Category 5 hurricane - Hurricane Karl, the first Category 5 Atlantic hurricane since 2007's Hurricane Felix. This season also had the most Category 4 hurricanes on record - at least six tropical cyclones attained Category 4 status at least once, beating the record of five held by both the 1999 and 20