User:Jason Rees/PAGASA

In 1998, PAGASA conducted "Name a Bagyo Contest", a contest designed to revise the naming scheme for typhoons within the Philippine Area of Responsibility with 140 names submitted in 1999 and the contest prompted PAGASA to begin using the revised naming system with four sets of 25 names and 10 auxiliary names, (replacing its list of female names that used since 1963) rotating every four years, in 2001 and later revised in 2005.

Origins
In 1963 the Phillippine Weather Bureau started to independently assign domestic names to tropical cyclones that developed into a tropical depression or moved into their self-defined area of responsibility. One of the key reasons for the introduction of domestic names was the lack of a name for tropical depressions that can cause widespread flooding and rain-induced landslides.