2023–24 South Pacific cyclone season
cyclone season in the South Pacific Ocean
The 2023–24 South Pacific cyclone season was a below-average season within the South Pacific Ocean to the east of 160°E. The season officially started on 1 November 2023 and ended on 30 April 2024, however a tropical cyclone could form between 1 July 2023, and 30 June 2024 and still be included in the season, as shown by Cyclone Lola which formed in October. 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) will also monitor the basin and issue unofficial warnings for American interests. The FMS attaches a number and an F suffix to systems that are active in the basin while the JTWC designates significant tropical cyclones with a number and a P suffix. The BoM, FMS and MetService all use the Australian Tropical Cyclone Intensity Scale and estimate winds with a 10-minute period, while the JTWC estimates winds over a 1-minute period, which are subsequently compared to the Saffir–Simpson hurricane wind scale (SSHWS).
Seasonal forecasts
Ahead of the season officially starting on 1 November, the Fiji Meteorological Service (FMS), Australian Bureau of Meteorology (BoM), National Institute of Water and Atmospheric Research (NIWA) and the University of Newcastle's Australian Centre for Water, Climate and Land (ACWCL), each issued a tropical cyclone outlook that discussed the upcoming season. These outlooks took into account a variety of factors such as a developing El Niño event and what had happened in previous seasons such as 1972–73, 1982–83, 1987–88, 1991–92, 1997–98, 2002–03, 2004–05, 2009–10 and 2015–16.
The first two of these outlooks were issued in July and August by the ACWCL who suggested that it would be a near-normal season, with eight and eleven tropical cyclones occurring between 135°E and 120°W during the season. The ACWCL tweaked its forecast during September and suggested that up to fourteen tropical cyclones would occur between 135°E and 120°W during the season. They subsequently joined NIWA, the FMS, BoM, MetService and various other Pacific meteorological services and contributed towards the Southwest Pacific tropical cyclone outlook.
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