2019–20 South Pacific cyclone season (HurricaneLucas4064)

The 2019–20 South Pacific cyclone season was the period of the year when most tropical cyclones form within the South Pacific Ocean to the east of 160°E. The season officially ran from November 1, 2019 to April 30, 2020; however, a tropical cyclone could form at any time between July 1, 2019 and June 30, 2020 and would count towards the season total. During the season, tropical cyclones will be officially monitored by the Fiji Meteorological Service, Australian Bureau of Meteorology, and New Zealand's MetService. The United States Armed Forces through the Joint Typhoon Warning Center  (JTWC)  also monitored the basin and issued warnings for American interests. RSMC Nadi attaches a number and an F suffix to tropical disturbances that form in or move into the basin, while the JTWC designates significant tropical cyclones with a number and a P suffix. The FMS, the BoM and MetService all use the Australian Tropical Cyclone Intensity Scale and estimate wind speeds over a period of ten minutes, while the JTWC estimates sustained winds over a 1-minute period, which are subsequently compared to the Saffir–Simpson hurricane wind scale  (SSHWS).

The first tropical cyclone was Intense Tropical Cyclone Ann. One cyclones formed in the month of December: Tropical Cyclone Lili. Severe Tropical Cyclone Calvinia cross into the Australian region from the South-West Indian Ocean. Two tropical cyclones formed in the month of January, Blake and Claudia. February featured Severe Tropical Cyclone Damien, the first Category 5 storm on the Australian scale since 2017. March saw the formation of Esther and Ferdinand. Severe Tropical Cyclone Vicky crossed into the basin from the South Pacific. Tropical Cyclone Gretel and Tropical Cyclone Harold developed in April, with Tropical Cyclone Lisebo crossing into the basin from the South-West Indian Ocean. May saw the final storm of the season, Wasi, which crossed over into the basin from the South Pacific.

System Names
Within the Southern Pacific a tropical depression is judged to have reached tropical cyclone intensity should it reach winds of 65 km/h, (40 mph) and it is evident that gales are occurring at least halfway around the center. With tropical depressions intensifying into a tropical cyclone between the Equator and 25°S and between 160°E - 120°W named by the FMS. However should a tropical depression intensify to the south of 25°S between 160°E and 120°W it will be named by MetService in conjunction with the FMS. Should a tropical cyclone move into the basin from the Australian region it will retain its original name. The next 10 names on the naming list are listed here below.

Ferdinand entered the basin from the Australian region on March 21, as a Category 1 tropical cyclone; its name was assigned by the Bureau of Meteorology, while it was still in the Australian region basin.