Severe Tropical Cyclone George was one of the most powerful Australian tropical cyclones on record, attaining a minimum barometric pressure of 902 mbar. It was also the strongest tropical cyclone worldwide in 2007 and the last Australian region tropical cyclone to achieve this record to date. The cyclone formed on 26 February 2007 in the Northern Territory's Top End, and intensified when it entered the Joseph Bonaparte Gulf, before crossing the northern coast of the Kimberley. It moved over the Indian Ocean, intensifying to a Category 4 cyclone, and eventually crossed the Pilbara coast just east of Port Hedland at peak intensity. After further analysis from the Bureau of Meteorology, George was reclassified to Category 5. The cyclone caused significant damage to the town of Port Hedland and numerous isolated mining camps around the town. Losses in Northern Territory amounted to at least A$12 million. Two people died and more than a dozen others were infected in a melioidosis outbreak following the Northern Territory floods. Insured damage in Western Australia amounted to $8 million, and there were three fatalities.
The 2001–02 Australian region cyclone season was a slightly below average tropical cyclone season. It officially started on 1 November 2001, and ended on 30 April 2002. However, the formation of Tropical Cyclone Alex on 26 October 2001 marked an earlier beginning to the season, and the season extended past the official end of the season when Tropical Cyclone Upia formed on 25 May 2002. The regional tropical cyclone operational plan also defines a "tropical cyclone year" separately from a "tropical cyclone season"; the "tropical cyclone year" began on 1 July 2001 and ended on 30 June 2002. The scope of the Australian region is limited to all areas south of the equator, east of 90°E and west of 160°E. This area includes Australia, Papua New Guinea, western parts of the Solomon Islands, East Timor and southern parts of Indonesia.
The 2008–09 Australian region cyclone season was a near average tropical cyclone season. It officially started on 1 November 2008, and officially ended on 30 April 2009. This season was also the first time that the BoM implemented a "tropical cyclone year." The regional tropical cyclone operational plan defines a "tropical cyclone year" separately from a "tropical cyclone season"; the "tropical cyclone year" began on 1 July 2008 and ended on 30 June 2009.
The 1996–97 Australian region cyclone season was an above average tropical cyclone season. It ran from 1 November 1996 to 30 April 1997. The regional tropical cyclone operational plan also defines a tropical cyclone year separately from a tropical cyclone season, and the "tropical cyclone year" ran from 1 July 1996 to 30 June 1997.
Severe Tropical Cyclone Monica was the most intense tropical cyclone, in terms of maximum sustained winds, on record to impact Australia. The 17th and final storm of the 2005–06 Australian region cyclone season, Monica originated from an area of low pressure off the coast of Papua New Guinea on 16 April 2006. The storm quickly developed into a Category 1 cyclone the next day, at which time it was given the name Monica. Travelling towards the west, the storm intensified into a severe tropical cyclone before making landfall in Far North Queensland, near Lockhart River, on 19 April 2006. After moving over land, convection associated with the storm quickly became disorganised.
The 2009–10 Australian region cyclone season was a below average tropical cyclone season, with eight tropical cyclones forming compared to an average of 12. The season began on 1 November 2009 and ran through until it end on 30 April 2010. The Australian region is defined as being to south of the equator, between the 90th meridian east and 160th meridian east. Tropical cyclones in this area are monitored by five Tropical Cyclone Warning Centres (TCWC's): Jakarta, Port Moresby, Perth, Darwin, and Brisbane, each of which have the power to name a tropical cyclone. The TCWC's in Perth, Darwin, and Brisbane are run by the Australian Bureau of Meteorology, who designate significant tropical lows with a number and the U suffix. The Joint Typhoon Warning Center also issues unofficial warnings for the region, designating significant tropical cyclones with the "S" suffix when they form west of 135°E, and the "P" suffix when they form east of 135°E.
The 2010–11 Australian region cyclone season was a near average tropical cyclone season, with eleven tropical cyclones forming compared to an average of 12. The season was also the costliest recorded in the Australian region basin, with a total of $3.62 billion in damages, mostly from the destructive Cyclone Yasi. The season began on 1 November 2010 and ended on 30 April 2011, although the first tropical cyclone formed on 28 October. The Australian region is defined as being to the south of the equator, between the 90th meridian east and 160th meridian east. Tropical cyclones in this area are monitored by five Tropical Cyclone Warning Centres (TCWC's): Jakarta, Port Moresby, Perth, Darwin, and Brisbane, each of which have the power to name a tropical cyclone. The TCWC's in Perth, Darwin, and Brisbane are run by the Bureau of Meteorology, who designate significant tropical lows with a number and the U suffix. The Joint Typhoon Warning Center also issues unofficial warnings for the region, designating significant tropical cyclones with the "S" suffix when they form west of 135°E, and the "P" suffix when they form east of 135°E.
The 2011–12 Australian region cyclone season was a below average tropical cyclone season, with 7 cyclones forming rather than the usual 11. It began on 1 November 2011, and ended on 14 May 2012. The regional tropical cyclone operational plan defines a "tropical cyclone year" separately from a "tropical cyclone season"; the "tropical cyclone year" began on 1 July 2011 and ended on 30 June 2012.
The 1984–85 Australian region cyclone season was one of the most active seasons on record. It officially started on 1 November 1984, and officially ended on 30 April 1985.
Severe Tropical Cyclone Laurence of December 2009 was the first Category 5 tropical cyclone to make landfall in Australia since Cyclone George in 2007.
The 2012–13 Australian region cyclone season was a slightly below average tropical cyclone season event in the ongoing cycle of tropical cyclone formation. It officially started on 1 November 2012, and officially ended on 30 April 2013, despite Cyclone Zane being an active system at the time. The regional tropical cyclone operational plan defines a "tropical cyclone year" separately from a "tropical cyclone season"; the "tropical cyclone year" began on 1 July 2012 and ended on 30 June 2013.
Tropical Cyclone Helen was the first tropical cyclone to bring gale-force winds to Darwin, Australia since 1985. The fourth named storm of the 2007–08 Australian region cyclone season, Helen developed out of a weak area of low pressure in late December over the Top End region of Australia. Generally tracking westward, the system eventually intensified into a tropical cyclone and was given the name Helen on 2 January. By this time, it was situated over the Joseph Bonaparte Gulf and was beginning to retrograde eastward. Late on 4 January, the storm made landfall near Channel Point with winds of 95 km/h (60 mph) though rapidly weakened to a tropical low within 12 hours. Gradually accelerating, the remnants of Helen moved over the Gulf of Carpentaria before striking land again on 6 January. The system was last noted over the Cape York Peninsula on 7 January.
The 2013–14 Australian region cyclone season was a slightly below-average tropical cyclone season, with 10 tropical cyclones occurring within the Australian region. It officially started on 1 November 2013, and ended on 30 April 2014. The regional tropical cyclone operational plan defines a "tropical cyclone year" separately from a "tropical cyclone season"; the "tropical cyclone year" began on 1 July 2013 and ended on 30 June 2014.
Severe Tropical Cyclone Nina was a significant tropical cyclone which impacted six island nations from December 1992 to January 1993. The system was first noted as a tropical low over the Cape York Peninsula on 21 December. Over the next few days the system moved south-westwards and moved into the Gulf of Carpentaria where it was named Nina, after it had developed into a tropical cyclone during 23 December. The system was subsequently steered south-eastwards by an upper level trough of low pressure, before it made landfall as a Category 2 tropical cyclone on the Cape York Peninsula near Cape Keerweer on 25 December. Over land the system weakened into a tropical low before it regenerated into a tropical cyclone over the Coral Sea on 28 December. The system subsequently moved north-eastwards, under the influence of Severe Tropical Cyclone Kina and an upper level ridge of high pressure. During 1 January 1993, Nina peaked with sustained wind speeds of 140 km/h (85 mph), as it affected Rennell, Bellona and Temotu provinces in the Solomon Islands. The system subsequently gradually weakened as it accelerated eastwards and affected Rotuma, Wallis and Futuna, Tonga and Niue. Nina was subsequently absorbed by Kina, while both systems were located near the Southern Cook Islands during 5 January.
The 2014–15 Australian region cyclone season was a slightly below average tropical cyclone season, though it featured numerous intense cyclones. The season officially ran from 1 November 2014, to 30 April 2015, however, a tropical cyclone could form at any time between 1 July 2014, and 30 June 2015, and would count towards the season total. During the season, tropical cyclones were officially monitored, by one of the five Tropical Cyclone Warning Centres (TCWCs) that are operated in this region.
The 2016–17 Australian region cyclone season, despite a very high number of tropical lows, was a slightly below-average season in terms of activity, with nine tropical cyclones, three of which intensified further into severe tropical cyclones; though it was much more active than the previous season. The season was the first to have a severe tropical cyclone since the 2014–15 season. 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 2016 to 30 April 2017, however, a tropical cyclone could form at any time between 1 July 2016 and 30 June 2017 and would count towards the season total. The first named storm, Yvette, developed during 21 December, and the final named storm, Greg, left the region on 3 May as a remnant low. This season was also the second-costliest tropical cyclone season on record in the Australian region basin, behind only the 2010–11 season, with a total of AUD$3.7 billion in damages incurred by the various storms, mostly from Cyclone Debbie.
Severe Tropical Cyclone Lam was the strongest storm to strike Australia's Northern Territory since Cyclone Monica in 2006. It formed from the monsoon trough on February 12 in the Coral Sea. For much of its duration, the system moved westward due to a ridge to the south. The system crossed over the Cape York Peninsula and moved into the Gulf of Carpentaria, whereupon it gradually organized due to warm waters and favorable outflow. On February 16, the Bureau of Meteorology (BoM) classified it as a Category 1 on the Australian tropical cyclone intensity scale and gave it the name Lam. The storm intensified further while drifting toward the Wessel Islands, developing an eye and strengthening to the equivalence of a minimal hurricane on February 18. It strengthened to reach maximum sustained winds of 185 km/h (115 mph) early on February 19 before turning to the southwest, making it a Category 4 cyclone. That day, it made landfall on Northern Territory between Milingimbi and Elcho Island at peak intensity, and it rapidly weakened over land. About six hours after Lam moved ashore, Cyclone Marcia struck Queensland as a Category 5 cyclone, marking the first time on record that two storms of Category 4 intensity struck Australia on the same day.
Severe Tropical Cyclone Peter was at the time, the wettest tropical cyclone on record in Australia, until it was surpassed by Cyclone Jasper in 2023. The third system and first severe tropical cyclone of the 1978–79 season, Peter developed on 29 December from a weak low pressure area over the Gulf of Carpentaria. Peter moved southeastward and deepened while brushing Arnhem Land. Initially a tropical low, it strengthened into a Category 1 cyclone by 12:00 UTC on 29 December. Peter intensified further on 30 December and became a Category 2 cyclone. On the following day, the cyclone peaked with maximum sustained winds of 110 km/h (70 mph). Peter weakened to a Category 1 cyclone before making landfall near the mouth of the Edward River in Queensland. While crossing the Cape York Peninsula, the storm weakened slowly. After reaching Pacific Ocean near Cooktown, the storm decelerated and meandered offshore, but dissipated just offshore on 4 January.
Severe Tropical Cyclone Owen was an erratic and long-lived tropical cyclone that affected numerous regions within its long trek, especially Queensland, during December 2018. It was the fourth tropical low, the first tropical cyclone, and first severe tropical cyclone of the 2018–19 Australian region cyclone season. Owen developed on 29 November 2018 from an area of low pressure that was situated over the Solomon Islands; the system struggled to strengthen in a conflicting environment and degenerated to a tropical low on 3 December. The low drifted westward, and on 9 December, it made its first landfall in Queensland, before moving over the Gulf of Carpentaria, where more favourable conditions allowed it to re-organise. The system regenerated into a tropical cyclone on 12 December and rapidly intensified into a Category 3 severe tropical cyclone that night. At midnight on 13 December, Owen made landfall in the Northern Territory, before turning eastward and reaching peak intensity, with sustained winds of 150 km/h (95 mph) and a minimum barometric pressure of 958 hPa (28.3 inHg). On 13 December, Owen made landfall on Queensland again, just north of the mouth of the Gilbert River near Kowanyama. The cyclone weakened rapidly after its third landfall, and the final advisory on Owen was issued on 15 December, after it had degenerated into a tropical low. However, the system persisted over the Coral Sea for another several days, before dissipating on 20 December.
Severe Tropical Cyclone Carlos was a strong tropical cyclone that made landfall in Australia and resulted in $12.3 million USD in damages. Carlos was first spotted on 14 February near Batchelor and intensified to a Category 3 cyclone on 22 February. The storm affected Australia for most of its life.
