2024–25 Australian region cyclone season#Tropical Low 23U (Ivone)

Ahead of the season officially starting on 1 November, the Australian Bureau of Meteorology (BoM) and New Zealand's National Institute of Water and Atmospheric Research (NIWA) both issued a tropical cyclone outlook that discussed the upcoming season.{{cite report|url=https://niwa.co.nz/sites/default/files/inline-images/Tropical-cyclone_outlook_2024-25_NIWA.pdf|publisher=New Zealand's National Institute of Water and Atmospheric Research |date=October 9, 2024 |access-date=October 29, 2024|title=2024-25 Southwest Pacific Tropical Cyclone Outlook}} These outlooks took into account a variety of factors such as a developing weak to moderate La Niña event and what had happened in previous seasons such as 1983–84, 1995–96, 2005–06 and 2017–18. The Southwest Pacific tropical cyclone outlook issued by New Zealand's National Institute of Water and Atmospheric Research (NIWA) in conjunction with MetService, the BoM and various other Pacific meteorological services, predicted that six to ten tropical cyclones would occur over the South Pacific Ocean between 135°E and 120°W. The outlook also predicted that three to four of these tropical cyclones would intensify further and become either a Category three, four or five severe tropical cyclone on the Australian tropical cyclone intensity scale. In addition to contributing towards the Southwest Pacific tropical cyclone outlook, the BoM predicted that tropical cyclone activity within the whole region between 90°E – 160°E and each of its self-defined subregions would be near normal. They also warned that the likelihood of a severe tropical cyclone was higher than average because of the warmer than average ocean temperatures that had been forecast for the region.

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The season officially started on 1 November, 2024. On 14 November, the Bureau of Meteorology (BoM) noted that a tropical low may form west of Sumatra. A westerly wind shear enhanced the disturbance's development. Despite moderate to high wind shear displacing deep convection, the tropical low further developed and the Joint Typhoon Warning Center (JTWC) issued a tropical cyclone formation alert. On 28 November, the BoM named Tropical Cyclone Robyn. The storm officially peaked as a high-end tropical storm before increasing wind shear caused the storm to dissipate. On 4 December, Tropical Low 04U formed off the coast of Java and headed west before dissipating on 11 December. Unfortunately, the disturbance caused landslides and floods, killing eleven people and leaving seven missing. The rest of December had Tropical Lows 02U, 06U, 07U, and 08U. Tropical Low 07U formed southeast of the Cocos Islands and JTWC designated it as a tropical storm. 08U later became Category 3 Cyclone Dikeledi in the Southwest Indian Ocean.

The first half of January had Tropical Lows 09U and 10U. The latter half had Sean, 13U, Taliah, and Vince. On 17 January, the BoM designated Tropical Low 11U, which absorbed 10U, and later named Sean on 19 January. A day later, the storm rapidly intensified to a Category 4 major cyclone on the Australian cyclone scale, possessing a distinct eye and intense winds. Sean dissipated a couple days later. The cyclone caused heavy rainfall and gale-force winds across portions of Western Australia. A record amount of rain fell in Karratha, with 274.4 mm recorded within 24 hours on 20 January. Tropical Low 13U briefly tracked along the coast of Queensland and flooding killed a 63 year old woman. On 31 January, the BoM designated Tropical Lows 14U and 15U, which were later named Taliah and Vince. After dealing with moderate wind shear, on 3 February, Taliah peaked as a Category 3 severe tropical cyclone on the Australian cyclone scale and Category 2 on the SSHWS scale. Taliah exited the basin on 12 February. Vince was named on 2 February and also intensified to a Category 3 on the Australian cyclone scale before exiting BoM area of responsibility on 4 February. February started with Tropical Lows 16U and 19U, though both disturbances exited the basin and entered the Fiji Meteorological Service area of responsibility. Meanwhile, the BoM designated Tropical Low 18U on 7 February, which was named Zelia on 11 February. Two days later, Zelia underwent rapid intensification due to warm sea surface temperatures and relatively low wind shear. At 00:00 UTC 13 February, Zelia intensified to a Category 4 severe tropical cyclone and later to Category 5 intensity. Afterward, the cyclone stalled and underwent an eyewall replacement cycle (EWRC), which ended its rapid intensification phase. Radar imagery showed an EWRC, which was later completed before landfall near De Grey, northeast of Port Hedland.

On 18 February, the Bureau of Meteorology designated Tropical Low 21U in the eastern side of the Indian Ocean. BOM later named the system Tropical Cyclone Bianca. On 20 February, a tropical low was spotted by the Bureau of Meteorology in the Coral Sea. The disturbance, initially designated by the agency as 22U, was noted to likely develop into a tropical cyclone over the next several days. Two days later, BOM upgraded the system to a category 1, with the name Alfred being assigned to it. On 25 February, Bianca peaked as a Category 4 severe tropical cyclone on the Australian cyclone scale and Category 3 on the SSHWS scale. Afterward, increasing wind shear and cooler sea surface temperatures caused the storm to rapidly weaken, dissipating on 27 February. Over the next couple of days, the storm continued to gradually move to the east, and was upgraded to a Category 2 tropical cyclone in the Australian scale at 16:00 AEST on 24 February. As Alfred turned south, it intensified to Category 3 status on 26 February at 22:00 AEST. The next day, the BOM further upgraded Alfred to a Category 4 cyclone, with a small eye appearing on visible satellite imagery. Later that night, an eyewall replacement cycle (ERC) occurred, prompting Alfred to fluctuate between Categories 3 and 4 on 1 March, before further weakening down to a Category 1 the following day. The cyclone then restrengthened slightly to Category 2 status by 3 March, before being downgraded to Category 1 intensity on 8 March. Alfred made landfall at Moreton Island on 01:00 AEST March 8 as a Category 1 tropical cyclone, and was downgraded to a tropical low five hours later.{{cite web |author=|date=2025-02-25|title=Tropical Climate Update|url=http://www.bom.gov.au/climate/tropical-note/archive/20250225.archive.shtml|website=Bureau of Meteorology|access-date=2025-02-25}}

File:Cyclone Errol explosively intensifying.gif

Tropical Low 23U formed on 4 March before exiting the basin on 8 March. The system later intensified into Tropical Storm Ivone in the South-West Indian Ocean. Tropical Low 25U formed on 17 March before dissipating on 21 March. Tropical Low 27U formed on 22 March and strengthened into Tropical Cyclone Courtney three days later. Afterward, Courtney intensified to a Category 5 cyclone on the Australian cyclone scale before entering the South-West Indian Ocean on 29 March. Tropical Cyclone Dianne formed near North Australia on 28 March and made landfall near Derby on 29 March. On 8 April, Tropical Low 29U formed in the Arafura Sea. Three days later, JTWC designated Tropical Cyclone 29S. Later on 15 April, 29S was designated as Errol by BoM. Shortly after the designation, the cyclone explosively intensified to a powerful Category 5 equivalent cyclone with peak winds of 260km/h and 919 hPa according to the JTWC.

{{Infobox tropical cyclone small

|Basin=Aus

|Image=Robyn 2024-11-28 0745Z.jpg

|Track=Robyn 2024 path.png

|Formed=18 November

|Dissipated=30 November

|10-min winds=55

|1-min winds=50

|Pressure=985

}}

{{Main|Cyclone Robyn (2024)}}

{{Update section|date=January 2025}}

On 14 November, the Bureau of Meteorology noted that a tropical low could form west of Sumatra.{{cite web |title=Tropical cyclone 7 day forecast |url=http://www.bom.gov.au/cyclone/7dayforecast/ |publisher=Bureau of Meteorology |access-date=24 November 2024 |archive-url=https://archive.today/20241115221700/http://www.bom.gov.au/cyclone/7dayforecast/ |archive-date=15 November 2024 |date=2024-11-15}} Several days later, they noted that the tropical low was developing.{{cite web |title=Tropical cyclone 7 day forecast |url=http://www.bom.gov.au/cyclone/7dayforecast/ |publisher=Bureau of Meteorology |access-date=24 November 2024 |archive-url=https://archive.today/20241118124422/http://www.bom.gov.au/cyclone/7dayforecast/ |archive-date=18 November 2024 |date=2024-11-20}} Further consolidation due to a westerly wind burst, which also spawned a twin cyclone, prompted the Joint Typhoon Warning Center to first track it on 23 November.{{Cite JTWC|type=abio|designation=90S|url=https://wiki.chlod.net/jtwc/text/2024-11-23-1830-abioweb.txt|date=2024-11-23|time=1830Z|reissued=1}} Despite deep convection being displaced due to moderate to high wind shear, the system's circulation became increasingly defined, prompting the JTWC to issue a tropical cyclone formation alert on the disturbance.{{Cite JTWC|date=2024-11-26|type=tcfa|designation=96S|time=2030Z|url=https://wiki.chlod.net/jtwc/text/2024-11-26-2030-sh9625web.txt|reissued=1}}

Robyn finally intensified into a Category 1 on 28 November and peaked with 100 km/h winds and 985 hpa on 29 November, and dissipated the next day due to wind shear.

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{{Infobox tropical cyclone small

|Basin=Aus

|Image=08U 2025-01-01 0225Z.jpg

|Track=Dikeledi 2025 path.png

|Formed=30 December

|Dissipated=4 January (Exited basin)

|10-min winds=25

|1-min winds=

|Pressure=1002

|Type1=low

}}

{{Main|Cyclone Dikeledi}}

Dikeledi formed south of Java, Indonesia as a tropical low on 30 December 2024, traversing the southern Indian Ocean before entering the South-West Indian Ocean basin on 4 January.{{citation needed|date=February 2025}}

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{{Infobox tropical cyclone small

|Basin=Aus

|Image=09U 2025-01-10 0645Z.jpg

|Track=09U 2025 path.png

|Formed=6 January

|Dissipated=12 January

|10-min winds=40

|1-min winds=30

|Pressure=1000

}}

Tropical Low 09U Formed on 6 January and dissipated on 12 January. On 11 March 2025, the BOM announced 09U had been retroactively upgraded to Category 1 on the Australian scale.{{Cite web |date=March 11, 2025 |title=Severe Tropical Cyclone (TC) Alfred impacts south-eastern Queensland and north-eastern New South Wales |url=http://www.bom.gov.au/climate/tropical-note/archive/20250311.archive.shtml |publisher=Bureau of Meteorology}} {{clear}}

{{Infobox tropical cyclone small

|Basin=Aus

|Image=Sean 2025-01-20 0710Z.jpg

|Track=Sean 2025 path.png

|Formed=17 January

|Dissipated=22 January

|10-min winds=95

|1-min winds=110

|Pressure=945

}}

Tropical low 11U formed on 17 January, before moving westward, and absorbing TL 10U. On 19 January, it was identified by the Bureau of Meteorology to have reached Tropical Cyclone status, and was named Sean. The following day, Sean rapidly intensified, becoming a Category 3 Severe Tropical Cyclone on the Australian scale by 8am on January 20, and a Category 2 tropical cyclone on the Saffir-Simpson scale later the same day. During that day, Sean developed an eye, and by 16:00 AWST, the Bureau of Meteorology identified Sean to have reached 165 km/h 10 minute sustained winds, placing it at Category 4 status on the Australian cyclone scale. The peak 1 minute windspeed reached 110 kt, making it a Category 3 on the Saffir-Simpson scale.{{Cite web |title=2025 Severe Tropical Cyclone SEAN (2025018S19119) |url=https://ncics.org/ibtracs/index.php?name=v04r01-2025018S19119|website=IBTrACS}}{{Cite web |title=Sean 2025 best track data |url=https://science.nrlmry.navy.mil/geoips/tcdat/tc2025/SH/SH102025/txt/trackfile.txt}} Sean started to weaken because of the decreasing sea surface temperatures and wind shear, and finally dissipated on 23 January.

Sean caused intense rainfall, storms, flash flooding and gale-force winds across large sections of the Pilbara, and Gascoyne regions of Western Australia, including Onslow, and Exmouth.{{Cite web |title=Tropical Cyclone Forecast Track Map Image - System 1 |url=http://www.bom.gov.au/products/IDW60281.shtml |archive-url=http://web.archive.org/web/20250114033353/http://www.bom.gov.au/products/IDW60281.shtml |archive-date=2025-01-14 |access-date=2025-01-20 |website=www.bom.gov.au}}

Cyclone Sean caused a record amount of rain to fall in Karratha, with 274.4 mm recorded in the 24 hours until 9:00 AM local time on January 20.{{Cite web |date=2025-01-20 |title=Rainfall records tumble as Cyclone Sean intensifies |url=https://www.weatherzone.com.au/news/rainfall-records-tumble-as-cyclone-sean-intensifies/1890293 |access-date=2025-01-20 |website=www.weatherzone.com.au |language=en}} Roads and homes were inundated, power grids were damaged, and ports were closed.{{Cite web |date=2025-01-21 |title=Tropical Cyclone Sean Lashes Western Australia |url=https://earthobservatory.nasa.gov/images/153852/tropical-cyclone-sean-lashes-western-australia#:~:text=The%20Australian%20Bureau%20of%20Meteorology,the%20closure%20of%20several%20ports. |access-date=2025-02-03 |website=earthobservatory.nasa.gov |language=en}}

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{{Infobox tropical cyclone small

|Basin=Aus

|Image=Taliah 2025-02-04 0200Z.jpg

|Track=Taliah 2025 path.png

|Formed=31 January

|Dissipated=12 February (Exited basin)

|10-min winds=75

|1-min winds=85

|Pressure=965

}}

Tropical Low 14U formed south of Timor-Leste on 31 January. On 1 February, the Bureau of Meteorology noted that the system had a high 65% chance to develop into a tropical cyclone by Sunday, and an 85% chance of forming before Monday.{{Cite web |date=2025-02-01 |title=Tropical cyclone forecast |url=http://www.bom.gov.au/cyclone/7dayforecast/ |access-date=2025-02-01 |archive-url=https://web.archive.org/web/20250201004009/http://www.bom.gov.au/cyclone/7dayforecast/ |archive-date=1 February 2025 }} Later that day, 14U was upgraded to tropical cyclone status and assigned the name Taliah by the BoM. Over the next few days, the system slowly strengthened before being upgraded to a severe tropical cyclone on 3 February.http://www.bom.gov.au/products/IDW60281.shtml On 12 February, the system moved into the South-western Indian Ocean out of BoM area of responsibility.

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{{Infobox tropical cyclone small

|Basin=Aus

|Image=Vince 2025-02-04 0340Z.jpg

|Track=Vince 2025 path.png

|Formed=31 January

|Dissipated=4 February (Exited basin)

|10-min winds=80

|1-min winds=100

|Pressure=967

}}

{{Update section|date=February 2025}}

Tropical Low 15U formed south of Christmas Island on 1 February, then on 2 February it got named Vince. The system strengthened until it reached Category 3 (Australian Scale). The cyclone exited the Bureau of Meteorology area of responsibility on 4 February.{{citation needed|date=February 2025}}

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{{Infobox tropical cyclone small

|Basin=Aus

|Image=Zelia 2025-02-13 0000Z.jpg

|Track=Zelia 2025 path.png

|Formed=7 February

|Dissipated=15 February

|10-min winds=110

|1-min winds=130

|Pressure=927

}}

{{main|Cyclone Zelia (2025)}}

Tropical Low 18U formed on 7 February. It began tracking west-southwest, and was upgraded to a Category 1 system, named Zelia on 11 February. The storm then steadily intensified to become a Category 2 by the next morning. That night, the storm slowed, and began rapid intensification, to reach Category 4 status by 06:00 AWST on 13 February,{{cite web|url=https://www.wis-jma.go.jp/d/o/APRF/Alphanumeric/Analysis/Miscellaneous/20250213/011900/A_AXAU02APRF130119_C_RJTD_20250213012116_12.txt|title=Tropical Cyclone Technical Bulletin: Australia - Western Region|publisher=Bureau of Meteorology|date=February 13, 2025|access-date=February 14, 2025|archive-url=https://archive.today/20250216054151/https://www.wis-jma.go.jp/d/o/APRF/Alphanumeric/Analysis/Miscellaneous/20250213/011900/A_AXAU02APRF130119_C_RJTD_20250213012116_12.txt|archive-date=February 16, 2025|url-status=dead}} and Category 5 status by 12:00 AWST that day. The storm then stalled and began an eyewall replacement cycle as shown by radar imagery, causing the rapid intensification phase to end.{{cite web|url=https://www.wis-jma.go.jp/d/o/APRF/Alphanumeric/Analysis/Miscellaneous/20250213/071000/A_AXAU02APRF130710_C_RJTD_20250213071231_2.txt|title=Tropical Cyclone Technical Bulletin: Australia - Western Region|publisher=Bureau of Meteorology|date=February 13, 2025|access-date=February 14, 2025|archive-url=https://archive.today/20250216055049/https://www.wis-jma.go.jp/d/o/APRF/Alphanumeric/Analysis/Miscellaneous/20250213/071000/A_AXAU02APRF130710_C_RJTD_20250213071231_2.txt|archive-date=February 16, 2025|url-status=dead}} Increasing wind shear and the eyewall replacement cycle caused Zelia to peak with 10-minute sustained winds of 205 km/h (125 mph); a Category 5 on the Australian scale. On 14 February, Severe Tropical Cyclone Zelia made landfall at around 12:30 AWST in the afternoon near the De Grey River mouth, northeast of Port Hedland at Category 4 intensity. Zelia quickly weakened after landfall, and it dropped below tropical cyclone intensity later that day.{{cite web|url=https://www.wis-jma.go.jp/d/o/APRF/Alphanumeric/Analysis/Miscellaneous/20250214/191300/A_AXAU02APRF141913_C_RJTD_20250214191517_81.txt|title=Tropical Cyclone Technical Bulletin: Australia - Western Region|publisher=Bureau of Meteorology|date=February 14, 2025|access-date=February 15, 2025|archive-url=https://archive.today/20250216061326/https://www.wis-jma.go.jp/d/o/APRF/Alphanumeric/Analysis/Miscellaneous/20250214/191300/A_AXAU02APRF141913_C_RJTD_20250214191517_81.txt|archive-date=February 16, 2025|url-status=dead}}

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{{Infobox tropical cyclone small

|Basin=Aus

|Image=Bianca 2025-02-25 0250Z.jpg

|Track=Bianca 2025 path.png

|Formed=18 February

|Dissipated=27 February

|10-min winds=95

|1-min winds=100

|Pressure=954

}}

{{Update section|date=February 2025}}

On 18 February, the Bureau of Meteorology (BOM) designated Tropical Low 21U in the eastern side of the Indian Ocean. BOM later named the system Tropical Cyclone Bianca. The cyclone did not pose any significant threat to Western Australia. On 25 February, the storm peaked as a Category 4 severe tropical cyclone on the Australian cyclone scale and Category 3 on the SSHWS scale. Afterward, increasing wind shear and cooler sea surface temperatures caused the storm to rapidly weaken, dissipating on 27 February.

{{clear}}

{{Infobox tropical cyclone small

|Basin=Aus

|Image=Alfred 2025-02-28 0405Z.jpg

|Track=Alfred 2025 path.png

|Formed=20 February

|Dissipated=9 March

|10-min winds=90

|1-min winds=115

|Pressure=951

}}

{{main|Cyclone Alfred (2025)}}

On 20 February, a tropical low was spotted by the Bureau of Meteorology (BOM) in the Coral Sea. The disturbance, initially designated by the agency as 22U, was noted to likely develop into a tropical cyclone over the next several days.{{Cite news |first=Gabrielle |last=Becerra Mellet |date=20 February 2025 |title=Cyclone likely to form off Queensland coast, BOM says |url=https://www.abc.net.au/news/2025-02-21/queensland-weather-cyclone-developing-bom/104960468 |access-date=3 March 2025 |work=ABC News}} Two days later, the Joint Typhoon Warning Center (JTWC) – which unofficially monitors all tropical cyclone basins, including the Australian region – upgraded the system to a tropical storm on the Saffir–Simpson scale (SSHWS). Initially, the BOM did not immediately follow suit and kept it as a tropical low; however, around 16:20 AEST, BOM upgraded the system to a category 1, with the name Alfred being assigned to it. Over the next couple of days, the storm continued to gradually move to the east, and was upgraded to a category 2 tropical cyclone in the Australian scale at 16:00 AEST on 24 February. As Alfred then turned south, it also continued to intensify, attaining category 3 status on 26 February at 22:00 AEST. The next day, the BOM further upgraded Alfred to a category 4 cyclone as a small eye appeared on visible satellite imagery. Later that night, an eyewall replacement cycle (ERC) occurred, prompting Alfred to fluctuate between Categories 3 and 4 on 1 March, before further weakening down to a Category 1 the following day. The cyclone then restrengthened slightly to category 2 status by 3 March, before being downgraded to a Category 1 on 8 March.{{Cite news |date=2025-03-08 |title=Flooding risk for Queensland, northern NSW despite Alfred downgrade |url=https://www.abc.net.au/news/2025-03-08/threat-of-flooding-queensland-northern-nsw-risk-cyclone-alfred/105027148 |access-date=2025-03-08 |work=ABC News |language=en-AU}}

Beginning on 3 March, watches and warnings were issued in South East Queensland (SEQ) – including Brisbane – as Alfred posed a notable risk to the area, with all major forecast models having predicted an SEQ landfall between 6 and 8 March. A Cyclone Watch was issued between Sandy Cape, and Grafton, including Brisbane – the first for the city since a watch was briefly issued for Cyclone Oma in 2019.{{Cite news |date=25 February 2025 |title=New weather modelling predicts Cyclone Alfred's arrival |url=https://www.abc.net.au/news/2025-02-26/cyclone-alfred-queensland-coast-predicted-to-hit-bom/104981870 |access-date=2 March 2025 |work=ABC News |first=Tom |last=Saunders |language=en-AU}}{{Cite news |last1=Billings |first1=Patrick |last2=Couacaud |first2=Tayla |last3=Koo |first3=Grace |date=2 March 2025 |title=Great southern landfall: Alfred to pack a punch as it makes history |url=https://www.couriermail.com.au/news/queensland/millions-in-the-firing-line-as-tropical-cyclone-alfred-makes-beeline-for-southeast/news-story/2ef0ba84897092acae7747b373858b8a |access-date=3 March 2025 |work=The Courier Mail}} The northeastern part of New South Wales (NSW) is also expected to be under a cyclone warning in preparation for the storm.{{Cite news |last=Millie Roberts |date=2025-03-03 |title='Unusual' warning to be issued for NSW ahead of Cyclone Alfred |url=https://www.abc.net.au/news/2025-03-03/nsw-tropical-cyclone-alfred-preparations-update-ses-bom-weather/105001960 |access-date=3 March 2025 |work=ABC News}} Alfred made landfall at Moreton Island on 01:00 AEST March 8 as a category 1 tropical cyclone, and was downgraded to a tropical low at 06:00 the same day.

{{clear}}

{{Infobox tropical cyclone small

|Basin=Aus

|Image=23U 2025-03-06 0733Z.jpg

|Track=Ivone 2025 path.png

|Formed=5 March

|Dissipated=7 March (Exited basin)

|10-min winds=20

|1-min winds=

|Pressure=1002

|Type1=low

}}

On 5 March, the BoM designated Tropical Low 23U. The disturbance later entered the Southwest Indian basin on 7 March where it was named Ivone by Meteo France a day later.

{{clear}}

{{Infobox tropical cyclone small

|Basin=Aus

|Image=Courtney 2025-03-29 1000Z.jpg

|Track=Courtney 2025 path.png

|Formed=22 March

|Dissipated=29 March (Exited basin)

|10-min winds=110

|1-min winds=120

|Pressure=933

}}

Tropical Low 27U formed on 22 March, located north-west of Australia. The system intensified into a category 1 tropical cyclone on 25 March, receiving the name Courtney. Courtney strengthened for a few days, reaching its peak intensity as a Category 5 tropical cyclone on 29 March. It moved into the South-West Indian Ocean later that day, still at peak intensity.{{cite web |author=|date=2025-04-01|title=Tropical Climate Update|url=http://www.bom.gov.au/climate/tropical-note/archive/20250401.archive.shtml|website=Bureau of Meteorology|access-date=2025-04-04}}

{{clear}}

{{Infobox tropical cyclone small

|Basin=Aus

|Image=Dianne 2025-03-28 2300Z.jpg

|Track=Dianne 2025 path.png

|Formed=25 March

|Dissipated=29 March

|10-min winds=50

|1-min winds=45

|Pressure=984

}}

Tropical Low 28U formed north of Western Australia on 25 March. On 28 March, Joint Typhoon Warning Center marked system as Tropical Cyclone 28S. Tropical Low 28U gained gale force winds in the northern quadrants of the storm. A few hours later the Bureau of Meteorology named it Dianne on 28 March. It peaked at 85km/h. Dianne made landfall just east of Cockatoo Island in the Western Australia region a short time after being named.

130 mm of rain fell in Derby, causing street flooding. However, there were no reports of significant damage.{{Cite news |date=2025-03-29 |title='You can almost surf on it': Locals welcome deluge from cyclone in WA's north |url=https://www.abc.net.au/news/2025-03-29/ex-tropical-cyclone-dianne-brings-flooding-risk-to-wa-kimberley/105112090 |access-date=2025-03-29 |work=ABC News |language=en-AU}}

{{clear}}

{{Infobox tropical cyclone small

|Basin=Aus

|Image=Errol 2025-04-16 1337Z.jpg

|Track=Errol 2025 path.png

|Formed=9 April

|Dissipated=18 April

|10-min winds=100

|1-min winds=140

|Pressure=945

}}

Errol formed on 9 April as Tropical Low 29U,{{cite web |author=|date=2025-04-08|title=Tropical Climate Update|url=http://www.bom.gov.au/climate/tropical-note/archive/20250408.archive.shtml|website=Bureau of Meteorology|access-date=2025-04-08}} and fluctuated from a Tropical Low to Category 1 from 12 April to 14 April. Starting late on 15 April, Errol begun a period of explosive deepening; 1-minute sustained winds increased from 100 km/h (65 mph) to {{cvt|260|km/h|mph|round=5|abbr=on}} in 24 hours and {{cvt|120|km/h|mph|round=5|abbr=on}} to 220 km/h (140 mph) in 12 hours, and the JTWC described it as 'explosive and extreme rapid intensification'. Early on 16 April, it reached its peak intensity as a Category 5 equivalent tropical cyclone with 1-minute sustained winds of {{convert|140|kn|km/h mph|round=5|order=out|abbr=on|sortable=on}}, according to JTWC, while the BOM estimated 10-minute sustained winds of {{convert|100|kn|km/h mph|round=5|order=out|abbr=on|sortable=on}} which made it a Category 4 severe tropical cyclone. On 16 April, Errol began to turn south, and on 17 April, Errol took a sharp turn southeast-east. Wind shear rapidly increased to 50 knots, causing Errol to rapidly weaken as it made landfall south of Kuri Bay on 18 April as a tropical low.{{cite web |author=|date=2025-04-22|title=Tropical Climate Update|url=http://www.bom.gov.au/climate/tropical-note/archive/20250422.archive.shtml|website=Bureau of Meteorology|access-date=2025-04-22}} After landfall, the BoM ceased advisories on the system as it fell below warning criteria.

Errol was a small tropical cyclone and brought heavy rain to the Northern Kimberley coast including Derby and Kalumburu on 18 and 19 April.{{Cite news |date=2025-04-18 |title=Ex-cyclone Errol 'a dodged bullet' as it crosses Kimberley as tropical low |url=https://www.abc.net.au/news/2025-04-19/ex-cyclone-errol-kimberley-tropical-low-impact-severe-weather/105192150 |access-date=2025-04-19 |work=ABC News |language=en-AU}} Kalumburu received 160.8 mm of rainfall in the 24 hours to 9 am on 19 April. Errol is the latest TC to form or move into the Australian region since TC Karim formed on 7 May 2022.

{{clear}}

• Tropical Low 04U formed off the southwestern coast of Java on 4 December. After heading westward for most of its lifetime, it dissipated on 11 December. The storm caused floods and landslides in Sukabumi Regency, West Java, killing eight people and leaving seven others missing, with one home destroyed and 39 others damaged in the regency.{{cite news|title=Tujuh Orang Masih Hilang Akibat Banjir Bandang di Sukabumi|url=https://www.tempo.co/politik/tujuh-orang-masih-hilang-akibat-banjir-bandang-di-sukabumi-1177926|date=6 December 2024|access-date=6 December 2024|language=id|publisher=Tempo}} Flooding also killed three people in Lebak Regency, Banten.{{cite news|title=Tiga Warga Lebak Meninggal Akibat Banjir dan Longsor|url=https://indoposco.id/nusantara/2024/12/06/tiga-warga-lebak-meninggal-akibat-banjir-dan-longsor|date=6 December 2024|access-date=6 December 2024|language=id|newspaper=Indopos}}
• Tropical Low 02U Formed on 7 December and dissipated on 13 December.
• Tropical Low 06U formed in the Coral Sea on 21 December and dissipated on 23 December.
• Tropical Low 07U formed on 22 December and dissipated on 30 December.
• Tropical Low 10U formed on 13 January, and whilst initially forecasted by many forecast models to become a Severe Tropical Cyclone, it never intensified, and was instead absorbed by the tropical low which would become Severe Tropical Cyclone Sean.
• Tropical Low 13U tracked along the coast of Queensland. It caused major flooding in Northern Queensland which killed a 63 year old woman.{{Cite web |last=Shackelford |first=Helen Regan, Robert |date=2025-02-02 |title=Australia braces for more destruction as deadly floods devastate northeast |url=https://edition.cnn.com/2025/02/02/australia/queensland-townsville-floods-climate-intl-hnk/index.html |access-date=2025-02-22 |website=CNN |language=en}}
• Tropical Low 16U formed on 2 February. It exited the basin on 4 February.
• Tropical Low 19U formed on 7 February, and exited the basin on 11 February.
• Tropical Low 20U formed on 10 February, and dissipated on 13 February.
• Tropical Low 25U formed in the South Indian Ocean on 17 March. On 18 March, Joint Typhoon Warning Center marked system as Tropical Cyclone 26S. 25U dissipated on 21 March and its remnants were absorbed by Tropical Low 27U, which would become Tropical Cyclone Courtney.
• Tropical Low 30U formed in the Arafura Sea on 13 April. On 18 April, JTWC designated 30U as 31P. It was expected to strengthen, but wind shear soon caused it to dissipate on 23 April.

{{clear}}

{{Main|Tropical cyclone naming#Australian region (90°E – 160°E)}}

The Australian Bureau of Meteorology (TCWC Melbourne) monitors all tropical cyclones that form within the Australian region, including any within the areas of responsibility of TCWC Jakarta or TCWC Port Moresby. Should a tropical low reach tropical cyclone strength within the BoM's area of responsibility, it will be assigned the next name from the following naming list. The names that will be used for the 2024–25 season are listed below:

Originally, the name Anthony was scheduled to be used, but was switched with Alfred from the next list of names in February 2025 to avoid confusion with Anthony Albanese, the Prime Minister of Australia at the time.{{Cite web |date=17 February 2025 |title=Australia's next tropical cyclone gets name change to avoid confusion with prime minister |url=https://www.theguardian.com/australia-news/2025/feb/17/australia-tropical-cyclone-name-change-anthony-albanese |access-date=18 February 2025 |website=The Guardian}}

TCWC Jakarta monitors Tropical Cyclones from the Equator to 10°S and from 90°E to 145°E. Should a Tropical Depression reach Tropical Cyclone strength within TCWC Jakarta's Area of Responsibility then it will be assigned the next name from the following list.{{cite report|author=RA V Tropical Cyclone Committee |publisher=World Meteorological Organization |title=Tropical Cyclone Operational Plan for the South-East Indian Ocean and the Southern Pacific Ocean 2023|date=2023|format=PDF |url=https://community.wmo.int/tropical-cyclone-operational-plans|access-date=October 23, 2023|archive-url=https://web.archive.org/web/20240702134220/https://www.theedkins.co.uk/storms/2024-2025_RAV_TropicalCycloneOperationalPlan_2023_Approved.pdf|archive-date=2024-07-02}}

Tropical cyclones that develop north of 10°S between 151°E and 160°E are assigned names by the Tropical Cyclone Warning Centre in Port Moresby, Papua New Guinea. Tropical cyclone formation in this area is extremely rare, with no cyclones being named in it since 2007.{{cite web|url=http://www.australiasevereweather.com/cyclones/2008/summ0713a.htm|author=Gary Padgett|publisher=Australian Severe Weather|title=Monthly Global Tropical Cyclone Summary October|year=2008|accessdate=1 July 2013|archive-date=4 July 2013|archive-url=https://archive.today/20130704162357/http://www.australiasevereweather.com/cyclones/2008/summ0713a.htm|url-status=dead}} As names are assigned in a random order, the whole list is shown below:

This table lists all of the tropical cyclones and subtropical cyclones that were monitored during the 2024–2025 Australian region cyclone season. Information on their intensity, duration, name, areas affected, primarily comes from the BoM. Death and damage reports come from either press reports or the relevant national disaster management agency while the damage totals are given in 2024 or 2025 USD.

{{Australian cyclone season effects (top)|Season start year=2024|Season end year=2025|Basin=Aus}}

{{Australian cyclone season effects (cyclone)|Name=Robyn|System active=No|Single-day system=No|Formation day=18|Formation month=November|Formation year=2024|Dissipation day=30|Dissipation month=November|Dissipation year=2024|Category=2|Winds=55|Pressure=985|Areas=Indonesia (Greater Sunda Islands), Cocos Islands|Damage prefix=>|Damage=213000|Deaths prefix=|Deaths=41|References=}}

{{Australian cyclone season effects (cyclone)|Name=04U|System active=No|Single-day system=No|Formation day=4|Formation month=December|Formation year=2024|Dissipation day=11|Dissipation month=December|Dissipation year=2024|Category=TL|Winds=25|Pressure=1001|Areas=Indonesia (Greater Sunda Islands), Cocos Islands|Damage prefix=|Damage=Unknown|Deaths prefix=|Deaths=11|References=}}

{{Australian cyclone season effects (cyclone)|Name=02U|System active=No|Single-day system=No|Formation day=7|Formation month=December|Formation year=2024|Dissipation day=13|Dissipation month=December|Dissipation year=2024|Category=TL|Winds=30|Pressure=998|Areas=None|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=06U|System active=No|Single-day system=No|Formation day=21|Formation month=December|Formation year=2024|Dissipation day=23|Dissipation month=December|Dissipation year=2024|Category=TL|Winds=25|Pressure=998|Areas=Queensland|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=07U|System active=No|Single-day system=No|Formation day=22|Formation month=December|Formation year=2024|Dissipation day=30|Dissipation month=December|Dissipation year=2024|Category=TL|Winds=35|Pressure=999|Areas=Cocos Islands|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=08U (Dikeledi)|System active=No|Single-day system=No|Formation day=30|Formation month=December|Formation year=2024|Dissipation day=4|Dissipation month=January|Dissipation year=2025|Category=TL|Winds=25|Pressure=1002|Areas=None|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=09U|System active=No|Single-day system=No|Formation day=6|Formation month=January|Formation year=2025|Dissipation day=12|Dissipation month=January|Dissipation year=2025|Category=1|Winds=40|Pressure=1000|Areas=None|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=10U|System active=No|Single-day system=No|Formation day=13|Formation month=January|Formation year=2025|Dissipation day=17|Dissipation month=January|Dissipation year=2025|Category=TL|Winds=15|Pressure=1006|Areas=None|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=Sean|System active=No|Single-day system=No|Formation day=17|Formation month=January|Formation year=2025|Dissipation day=22|Dissipation month=January|Dissipation year=2025|Category=4|Winds=95|Pressure=945|Areas=Western Australia|Damage prefix=|Damage=Unknown|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=13U|System active=No|Single-day system=No|Formation day=29|Formation month=January|Formation year=2025|Dissipation day=1|Dissipation month=February|Dissipation year=2025|Category=TL|Winds=30|Pressure=999|Areas=Queensland|Damage prefix=|Damage=None|Deaths prefix=|Deaths=1|References=}}

{{Australian cyclone season effects (cyclone)|Name=Taliah|System active=No|Single-day system=No|Formation day=31|Formation month=January|Formation year=2025|Dissipation day=12|Dissipation month=February|Dissipation year=2025|Category=3|Winds=75|Pressure=965|Areas=Christmas Island, Cocos Islands|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=Vince|System active=No|Single-day system=No|Formation day=31|Formation month=January|Formation year=2025|Dissipation day=4|Dissipation month=February|Dissipation year=2025|Category=3|Winds=80|Pressure=967|Areas=None|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=16U|System active=No|Single-day system=No|Formation day=2|Formation month=February|Formation year=2025|Dissipation day=4|Dissipation month=February|Dissipation year=2025|Category=TL|Winds=Not specified|Pressure=1006|Areas=None|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=19U|System active=No|Single-day system=No|Formation day=7|Formation month=February|Formation year=2025|Dissipation day=11|Dissipation month=February|Dissipation year=2025|Category=TL|Winds=Not specified|Pressure=1000|Areas=Queensland|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=Zelia|System active=No|Single-day system=No|Formation day=7|Formation month=February|Formation year=2025|Dissipation day=15|Dissipation month=February|Dissipation year=2025|Category=5|Winds=110|Pressure=927|Areas=Kimberley, Pilbara|Damage prefix=|Damage=733000000|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=20U|System active=No|Single-day system=No|Formation day=10|Formation month=February|Formation year=2025|Dissipation day=13|Dissipation month=February|Dissipation year=2025|Category=TL|Winds=Not specified|Pressure=Not specified|Areas=None|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=Bianca|System active=No|Single-day system=No|Formation day=18|Formation month=February|Formation year=2025|Dissipation day=27|Dissipation month=February|Dissipation year=2025|Category=4|Winds=95|Pressure=954|Areas=None|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=Alfred|System active=No|Single-day system=No|Formation day=20|Formation month=February|Formation year=2025|Dissipation day=9|Dissipation month=March|Dissipation year=2025|Category=4|Winds=90|Pressure=951|Areas=Willis Island, Queensland, New South Wales|Damage prefix=|Damage=821000000|Deaths prefix=|Deaths=1|References=}}

{{Australian cyclone season effects (cyclone)|Name=23U (Ivone)|System active=No|Single-day system=No|Formation day=5|Formation month=March|Formation year=2025|Dissipation day=7|Dissipation month=March|Dissipation year=2025|Category=TL|Winds=20|Pressure=1002|Areas=None|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=25U|System active=No|Single-day system=No|Formation day=17|Formation month=March|Formation year=2025|Dissipation day=21|Dissipation month=March|Dissipation year=2025|Category=TL|Winds=45|Pressure=991|Areas=Christmas Island, Cocos Islands|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=Courtney|System active=No|Single-day system=No|Formation day=22|Formation month=March|Formation year=2025|Dissipation day=29|Dissipation month=March|Dissipation year=2025|Category=5|Winds=110|Pressure=933|Areas=None|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=Dianne|System active=No|Single-day system=No|Formation day=25|Formation month=March|Formation year=2025|Dissipation day=29|Dissipation month=March|Dissipation year=2025|Category=2|Winds=50|Pressure=984|Areas=Kimberley|Damage prefix=|Damage=Minor|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=Errol|System active=No|Single-day system=No|Formation day=9|Formation month=April|Formation year=2025|Dissipation day=18|Dissipation month=April|Dissipation year=2025|Category=4|Winds=100|Pressure=945|Areas=Indonesia (Maluku), Kimberley|Damage prefix=|Damage=Minor|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=30U|System active=No|Single-day system=No|Formation day=13|Formation month=April|Formation year=2025|Dissipation day=23|Dissipation month=April|Dissipation year=2025|Category=TL|Winds=35|Pressure=998|Areas=Indonesia (Maluku), Queensland (Mapoon, Weipa), Northern Territory (Top End)|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (bottom)|Systems=24|Season ongoing=Yes|Start day=18|Start month=November|Start year=2024|End day=|End month=|End year=2025|Highest winds=110|Lowest pressure=927|Damage prefix=>|Total damage=1554213000|Deaths prefix=|Total deaths=54}}

{{Portal|Tropical cyclones}}

• Weather of 2024 and 2025
• List of Southern Hemisphere cyclone seasons
• Tropical cyclones in 2024, 2025
• Atlantic hurricane seasons: 2024, 2025
• Pacific hurricane seasons: 2024, 2025
• Pacific typhoon seasons: 2024, 2025
• North Indian Ocean cyclone seasons: 2024, 2025
• 2024–25 South-West Indian Ocean cyclone season
• 2024–25 South Pacific cyclone season

{{reflist|2}}

{{commons category}}

• [http://www.bom.gov.au/cyclone/ Australian Bureau of Meteorology]
• [https://web.archive.org/web/20171222221633/http://www.metoc.navy.mil/jtwc/jtwc.html Joint Typhoon Warning Center]
• [https://tropicalcyclone.bmkg.go.id TCWC Jakarta] {{in lang|id}}
• [http://www.pngmet.gov.pg Papua New Guinea National Weather Service]

{{2024–25 Australian region cyclone season buttons}}

{{TC Decades|Year=2020|basin=Australian region|type=cyclone|shem=yes}}

{{Tropical cyclone season|2024|split-year=yes}}

{{DEFAULTSORT:2024-25 Australian region cyclone season}}

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