2018 - 19 Australian Region Cyclone Season (GiedriusforCat5)

The 2018-19 Australian region cyclone season was an average year in terms of activity, but hyperactive in terms of intensity, breaking the record for most Category 5 cyclones in one season with Trevor, Ann and Blake. It was the third season in a row to have a Category 5 cyclone. It was the period of the year when most tropical cyclones form in the Southern Indian Ocean and Pacific Oceans between 90°E and 160°E. The season officially ran from 1 November 2018 to 30 April 2019, however, a tropical cyclone could form at any time between 1 July 2018 and 30 June 2019 and would count towards the season total. The first named storm, Owen, developed during 7 October, and the final named storm, Claudia, dissipated on 17 March.

During the season, tropical cyclones were officially monitored by one of the five Tropical Cyclone Warning Centres (TCWCs) that operated in this region. Three of the five centres were operated by the Australian Bureau of Meteorology (BoM) in Perth, Darwin, and Brisbane, while the other two were operated by the National Weather Service of Papua New Guinea in Port Moresby and the Indonesian Agency for Meteorology, Climatology and Geophysics in Jakarta, Indonesia. The United States' Joint Typhoon Warning Center (JTWC) and other national meteorological services, including Météo-France, also monitored the basin during the season.

Systems
Tropical Cyclone Owen

Tropical Cyclone Penny

Severe Tropical Cyclone Riley

Tropical Low 4U

Severe Tropical Cyclone Alu

Tropical Cyclone Savannah

Severe Tropical Cyclone Trevor