1998–99 Australian region cyclone season#Severe Tropical Cyclone Frederic-Evrina

{{Infobox Hurricane Small

|Basin=Aus

|Image=Zelia 8 October 1998.jpg

|Track=Zelia 1998 track.png

|Formed=7 October

|Dissipated=10 October

|10-min winds=40

|1-min winds=45

|Pressure=990

}}

This storm developed near Cocos Island.

{{-}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=11-09-1998-Alison.png

|Track=Alison 1998 track.png

|Formed=7 November

|Dissipated=13 November (Exited basin)

|10-min winds=85

|1-min winds=70

|Pressure=955

}}

A tropical depression formed on 6 November 1998 near Cocos Island. The tropical depression rapidly strengthened into Tropical Cyclone Alison on the same day. Alison was 130 miles northeast of Cocos Island and was moving southeast.[http://australiasevereweather.com/cyclones/1999/summ9811.htm#9904] Alison passed only 25 miles south of Cocos bringing gale-force winds to the island. On 11 November, Alison encountered wind shear which weakened the storm and by 13 November the storm dissipated.[http://australiasevereweather.com/cyclones/1999/summ9811.htm#9904tle]

{{-}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Billy 1998-12-03 2333Z.png

|Track=Billy 1998 track.png

|Formed=1 December

|Dissipated=6 December

|10-min winds=70

|1-min winds=65

|Pressure=965

}}

Billy formed on 1 December 1998 off the northwestern Australia coast. The storm moved nearly due south before making landfall near Onslow, Western Australia.[http://australiasevereweather.com/cyclones/1999/summ9812.htm#9905] Damage estimates from Australia are unavailable.

{{-}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Thelma 1998-12-10 0502Z.png

|Track=Thelma 1998 track.png

|Formed=3 December

|Dissipated=15 December

|10-min winds=120

|1-min winds=135

|Pressure=920

}}

{{Main|Cyclone Thelma}}

On 3 December a tropical depression formed in the Arafura Sea, 250 miles east-northeast of Darwin. The system drifted southwestward, strengthening into Tropical Cyclone Thelma on 6 December. Thelma continued to intensify as it turned to the south-southwest, reaching Category 5 strengthen on the Australian cyclone scale as it brushed the Tiwi Islands.[http://australiasevereweather.com/cyclones/1999/summ9812.htm#9905] Cyclone Thelma reached a peak of 140 mph with a minimum pressure of 925 mbar on the 8th, and made landfall on the western Australian coastline on the 10th. After making landfall, the storm paralleled the coastline, and rapidly weakened to a tropical storm. Favorable conditions aloft allowed it to remain a tropical storm until the 15th, when the storm dissipated near Port Hedland. Thelma was responsible for moderate rainfall and downed trees, but caused no casualties due to the sparse population of where it hit.

{{clear}}

{{Infobox Hurricane Small

|Basin=Aus

|Formed=7 December

|Dissipated=13 December

|10-min winds=25

|Pressure=1000

}}

On 3 December, an area of concentrated convection developed from a monsoon trough over the Indian Ocean. The next day RSMC La Reunion issued one advisory on this system, labeling it "A3". Over the next few days the area drifted eastward into the Australian region and slowly organized. The warning center at Perth initiated bulletins on the tropical low on 7 December when the system was located 175 nm west-northwest of Cocos Island. The low remained essentially stationary for the next 48 hours while slowly weakening. Perth discontinued bulletins on the 8th, but continued to track the low for the next few days. The remnants of the low drifted eastward to a point about 150 nm north-northwest of Cocos. There is a significant possibility that this low is the same persistent one that developed into Tropical Cyclone Cathy.{{cite web|author=Gary Padgett|year=1999|title=Monthly Global Tropical Cyclone Summary, December 1998|access-date=18 July 2008|url=http://australiasevereweather.com/cyclones/1999/summ9812.htm}}

{{clear}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Cathy 1998-12-26 0532Z.png

|Track=Cathy 1998 track.png

|Formed=22 December

|Dissipated=28 December

|10-min winds=50

|1-min winds=40

|Pressure=991

}}

This storm developed near Cocos Island.

{{-}}

{{Infobox Hurricane Small

|Basin=Aus

|Formed=26 December

|Dissipated=2 January

|10-min winds=30

|Pressure=996

}}

A tropical disturbance was first noted by JTWC over the Gulf of Carpentaria on 25 December. The system deepened as it moved slowly westward over the next two days. The disturbance continued to intensify over the Northern Territory, until it stalled over the border of Queensland for a couple of days. On 30 December the system moved over water and began to develop further, prompting TCWC Brisbane to issue a Tropical Cyclone Watch for portions of the southern Gulf coast. The low turned south-southeast shortly afterwards, and warnings were canceled when it became apparent that the center moved back inland. The system weakened over northwestern Queensland and dissipated on 2 January.

The low brought heavy rains to the state of Queensland, with many centers reporting 24-hour totals over 150 mm. This rainfall activity was enhanced by an upper-level trough which brought showers as far south as Sydney on 1 January. Widespread flooding caused some of river systems which feed into Lake Eyre to reach flood stage. At least one death was indirectly attributed to the storm, when heavy rain and fog caused a car to drive off a road north of Brisbane.

{{clear}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Olinda 1999-01-21 2032Z.png

|Track=Olinda 1999 track.png

|Formed=20 January

|Dissipated=21 January (Exited basin)

|10-min winds=45

|1-min winds=45

|Pressure=987

}}

Tropical Cyclone Olinda existed from 20 to 21 January.

{{-}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Damien 1999-01-24 0932Z.png

|Track=Damien-Birenda 1999 track.png

|Formed=21 January

|Dissipated=28 January (Exited basin)

|10-min winds=85

|1-min winds=80

|Pressure=950

}}

Severe Tropical Cyclone Damien–Birenda existed from 21 to 28 January.

{{-}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Pete 1999-01-23 1932Z.png

|Track=Pete 1999 track.png

|Formed=21 January

|Dissipated=23 January (Exited basin)

|10-min winds=50

|1-min winds=55

|Pressure=985

}}

Tropical Cyclone Pete existed from 21 to 23 January.

{{-}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=16P 1999-01-25 2225Z.png

|Track=16P 1999 track.png

|Formed=24 January

|Dissipated=27 January

|10-min winds=30

|1-min winds=35

|Pressure=993

}}

An elongated monsoon trough spread across northern Australia in late January. On 22 January the Joint Typhoon Warning Center began mentioning a disturbance in the Gulf of Carpentaria in their daily Tropical Weather Outlooks. The disturbance drifted eastward from the north of Arnhem Land into the northern Gulf. The TCWC at Darwin begin issuing warnings on 24 January and a cyclone watch was posted for portions of the southern Gulf Coast. JTWC issued a Formation Alert early that day and began issuing warnings on the 25th.{{cite web|author=Gary Padgett|year=1999|title=Monthly Global Tropical Cyclone Summary, January 1999|access-date=18 July 2008|url=http://australiasevereweather.com/cyclones/1999/summ9901.htm}}

The system drifted slowly in a south-southwesterly direction over the next couple of days. According to JTWC estimates, the system strengthened into a tropical storm at 1200 UTC on 25 January.{{cite web|author=Joint Typhoon Warning Center|year=1999|title=Best Track for Cyclone 16P|access-date=18 July 2008|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/1999/1999s-bsh/bsh161999.txt|archive-url=https://web.archive.org/web/20110607043143/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/1999/1999s-bsh/bsh161999.txt|url-status=dead|archive-date=7 June 2011}} Conditions deteriorated on 26 January when the system ran into some vertical wind shear and weakened. The JTWC noted that a second circulation appeared to the east of the warning position and that dry air entrainment had led to decreased organization of the depressions. When the low was about 125 nm east of Alyangula, Darwin issued the last gale warning, and ceased advices on the slow-moving system 24 hours later.

{{clear}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=18S 1999-02-05 0633Z.png

|Track=18S 1999 track.png

|Type1=low

|Formed=31 January

|Dissipated=14 February

|10-min winds=40

|1-min winds=40

|Pressure=995

}}

A tropical low numbered 18S existed from 31 January to 14 February.

{{clear}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Rona 1999-02-10 2333Z.png

|Track=Rona 1999 track.png

|Formed=9 February

|Dissipated=12 February

|10-min winds=75

|1-min winds=55

|Pressure=970

}}

{{main|Cyclones Rona and Frank}}

Rona formed in the Coral Sea and crossed the Queensland coast on 11 February causing major flooding between Cairns and Townsville with extensive crop damage.{{cite web|url=http://www.bom.gov.au/inside/eiab/reports/ar98-99/appendix7.pdf|title=The Weather of 1998-99|publisher=Bureau of Meteorology}} It eventually reformed into Severe Tropical Cyclone Frank in the South Pacific.

{{-}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=26S 9 March 1999.jpg

|Track=26S 1999 track.png

|Type1=low

|Formed=7 March

|Dissipated=14 March

|10-min winds=33

|1-min winds=35

|Pressure=1000

}}

A tropical low numbered 26S existed from 7 to 14 March.

{{clear}}

{{main|Cyclone Elaine}}

{{Infobox tropical cyclone small

|Basin=Aus

|Image=Elaine 1999-03-18 0502Z.png

|Track=Elaine 1999 track.png

|Formed=15 March

|Dissipated=20 March

|10-min winds=90

|1-min winds=100

|Pressure=945

}}

Making landfall on 20 March, this cyclone devastated the small town of Moora, where houses and commercial properties in the town were inundated by the floodwaters and approximately 1000 people were evacuated.[http://www.bom.gov.au/cyclone/history/wa/1999.shtml]

{{clear}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Vance 1999-03-21 0425Z.png

|Track=Vance 1999 track.png

|Formed=14 March

|Dissipated=23 March

|10-min winds=120

|1-min winds=125

|Pressure=910

}}

{{Main|Cyclone Vance}}

A tropical depression formed in the Timor Sea on 16 March 1999. The storm lingered before being upgraded to cyclone status and was named Vance. By 19 March, Cyclone Vance had reached Category 3 status as it neared the Australian coast. On 20 March, Vance became a Category 5 Australian cyclone as it made landfall near Exmouth. Moving southward, the interaction with land weakened Vance and by 24 March, the storm dissipated before reaching Victoria, Australia.

Vance caused significant flooding and property damage but there were no deaths.[http://www.bom.gov.au/cyclone/history/wa/1999.shtml]

Severe Tropical Cyclone Vance devastated the northwest town of Exmouth. A measured wind gust of 267 km/h, recorded at 11.50 am (WST) 22 March, at Learmonth Meteorological Office, is the highest wind speed ever recorded on mainland Australia. The Bureau's Regional Director Len Broadbridge said that Vance was one of the most severe cyclones in Australia's history. "The wind speeds experienced at Exmouth are possibly the strongest experienced by an Australian town or city in recorded history." [http://www.bom.gov.au/announcements/media_releases/wa/waro_19990323.shtml]

{{-}}

{{Infobox Hurricane Small

|Basin=Aus

|Formed=20 March

|Dissipated=21 March

|Prewinds=≤

|10-min winds=33

|Pressure=996

}}

Another tropical low existed from 20 to 21 March.

{{clear}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Frederic 1999-03-31 0632Z.png

|Track=Frederic-Evrina 1999 track.png

|Formed=25 March

|Dissipated=1 April (Exited basin)

|10-min winds=110

|1-min winds=140

|Pressure=920

}}

This cyclone moved into Reunion area of responsibility on 1 April.

{{-}}

{{Main|Cyclone Gwenda}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Gwenda 1999-04-06 0425Z.png

|Track=Gwenda 1999 track.png

|Formed=2 April

|Dissipated=8 April

|10-min winds=120

|1-min winds=130

|Pressure=900

}}

Cyclone Gwenda was another category 5 cyclone, the strongest of the season and the most powerful cyclone in this region on record. It formed on 4 April, and fortunately weakened before making landfall near Port Hedland, Australia on 7 April. Damage was minimal. [http://www.bom.gov.au/cyclone/history/wa/1999.shtml]

{{Clear}}

{{Infobox Hurricane Small

|Basin=Aus

|Formed=16 April

|Dissipated=19 April

|Gusts=44

|Pressure=999

}}

Another tropical low existed from 16 to 19 April.

{{clear}}

{{Infobox Hurricane Small

|Basin=Aus

|Image=Hamish 1999-04-21 0232Z.png

|Track=Hamish 1999 track.png

|Formed=19 April

|Dissipated=21 April (Exited basin)

|10-min winds=55

|1-min winds=45

|Pressure=980

}}

This cyclone moved into Reunion area of responsibility on 21 April at tropical cyclone intensity. However, it was designated F1 and not named.

{{-}}

Tropical cyclones are assigned names by the Australian Bureau of Meteorology or Papua New Guinea. Tropical cyclones are named if they are non-frontal low pressure systems of synoptic scale developing over warm waters, or if Dvorak intensity analysis indicate the presence of gale force or stronger winds near the centre. Therefore, tropical systems with gales in one or more quadrants, but not near the centre, are not named.{{cite web|title=Tropical Cyclones: Frequently Asked Questions|access-date=15 August 2008|publisher=Australian Government Bureau of Meteorology|url=http://www.bom.gov.au/weather/cyclone/faq/index.shtml}} All names assigned in the Australian region are selected sequentially. Only the names used during this cyclone season are listed below. The complete list of names for each basin are found in the World Meteorological Organization's official lists.{{cite web|year=1999|title=Tropical Cyclone Operational Plan for the South Pacific and South-East Indian Ocean|access-date=15 August 2008|publisher=World Meteorological Organization|url=http://www.wmo.ch/pages/prog/www/Peng/tcp/documents/doc/Op-pln99.doc}}{{Dead link|date=November 2018 |bot=InternetArchiveBot |fix-attempted=yes }}

Each Australian Tropical Cyclone Warning Centre (Perth, Darwin, and Brisbane) maintains a list of names arranged alphabetically and alternating male and female. Tropical cyclones that develop in the South-East Indian Ocean are assigned names by the Tropical Cyclone Warning Centre in Perth. This region includes the areas east of 90°E, south of the Equator, and west of 125°E. Tropical cyclones that develop south of the Equator between 125°E and 141°E are assigned names by the Tropical Cyclone Warning Centre in Darwin, Northern Territory. This area includes most of the cyclones that form in the Arafura Sea and Western Gulf of Carpentaria. Tropical cyclones in the Coral Sea and Eastern Gulf of Carpentaria between 141°E and 160°E and south of 10°S are assigned names by the Tropical Cyclone Warning Centre in Brisbane, Queensland.

Perth

• Zelia – Alison – Billy – Cathy – Damien – Elaine – Frederic – Gwenda – Hamish

Darwin

• Thelma – Vance

Brisbane

• Olinda – Pete – Rona

Additionally, the Tropical Cyclone Warning Centre in Port Moresby, Papua New Guinea reserves the right to name cyclones that develop in the Solomon Sea and Gulf of Papua, north of 10°S between 141°E and 160°E. Names are selected randomly from their list and retired once they are used.{{cite web|year=2006|title=Tropical Cyclone Operational Plan for the South Pacific and South-East Indian Ocean|access-date=15 August 2008|publisher=World Meteorological Organization|url=http://www.wmo.int/pages/prog/www/tcp/documents/TCP-24-OP-PLN-2006-edition-english.pdf| archive-url= https://web.archive.org/web/20080911050616/http://www.wmo.int/pages/prog/www/tcp/documents/TCP-24-OP-PLN-2006-edition-english.pdf| archive-date= 11 September 2008 | url-status= live}} No cyclones were named by this warning centre during the 1998–99 season.

The Bureau of Meteorology retired the names Elaine, Gwenda, Rona, Thelma and Vance, replacing them with Ellie, Gabrielle, Ruby, Tasha and Verdun respectively.{{cite web|author=Bureau of Meteorology |year=2005 |title=TROPICAL CYCLONE NAMES |publisher=Bureau of Meteorology |accessdate=16 June 2006 |url=http://www.bom.gov.au/catalogue/warnings/cyclone_names.shtml |url-status=dead |archiveurl=https://web.archive.org/web/20060615131914/http://www.bom.gov.au/catalogue/warnings/cyclone_names.shtml |archivedate=15 June 2006 }} Ellie and Gabrielle were first used in the 2008–09 season, Tasha in 2010 and Ruby in 2021. Verdun was not retained after the naming lists were combined prior to the 2008-09 cyclone season.

{{Pacific areas affected (Top)}}

|-

| Zelia || {{Sort|19981007|7–10 October 1998}} || bgcolor=#{{storm colour|A1}}|Category 1 tropical cyclone || bgcolor=#{{storm colour|A1}}|{{convert|40|kn|km/h mph|round=5|order=out|abbr=on|sortable=on}} || bgcolor=#{{storm colour|A1}}|{{convert|990|hPa|inHg|sigfig=4|abbr=on|sortable=on}} || None || {{sort|0|None}} || {{sort|0|None}} ||{{cite report|url=http://www.bom.gov.au/cyclone/history/pdf/zelia.pdf|title=Tropical Cyclone Zelia|publisher=Australian Bureau of Meteorology|access-date=26 May 2022}}

|-

{{Australian cyclone season effects (cyclone)|Name=Alison|System active=No|Single-day system=No|Formation day=7|Formation month=November|Formation year=1998|Dissipation day=13|Dissipation month=November|Dissipation year=1998|Date tiebreak=1|Category=3|Winds=85|Pressure=955|Areas=Cocos Island|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

{{Australian cyclone season effects (cyclone)|Name=Billy|System active=No|Single-day system=No|Formation day=1|Formation month=December|Formation year=1998|Dissipation day=6|Dissipation month=December|Dissipation year=1998|Date tiebreak=1|Category=3|Winds=70|Pressure=965|Areas=Cocos Island|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

|-

{{Australian cyclone season effects (cyclone)|Name=Thelma|System active=No|Single-day system=No|Formation day=3|Formation month=December|Formation year=1998|Dissipation day=15|Dissipation month=December|Dissipation year=1998|Date tiebreak=1|Category=5|Winds=120|Pressure=920|Areas=Northern Territory, Western Australia|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

|-

{{Australian cyclone season effects (cyclone)|Name=TL|System active=No|Single-day system=No|Formation day=7|Formation month=December|Formation year=1998|Dissipation day=13|Dissipation month=December|Dissipation year=1998|Date tiebreak=1|Category=TL|Winds=25|Pressure=1000|Areas=|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

|-

| Cathy || {{sort|19980121|21 January – 2 February}} || bgcolor=#{{storm colour|A2}}|Category 2 tropical cyclone || bgcolor=#{{storm colour|A2}}|{{convert|50|kn|km/h mph|round=5|order=out|abbr=on|sortable=on}} || bgcolor=#{{storm colour|A2}}|{{convert|991|hPa|inHg|sigfig=4|abbr=on|sortable=on}} || None || {{sort|0|None}} || {{sort|0|None}} ||{{cite web|publisher=International Best Track Archive for Climate Stewardship|url={{IBTRACS url|id=1998357S11101}}|access-date=25 May 2022|title=1998 Tropical Cyclone Cathy (1998357S11101)}}

|-

{{Australian cyclone season effects (cyclone)|Name=TL|System active=No|Single-day system=No|Formation day=26|Formation month=December|Formation year=1998|Dissipation day=2|Dissipation month=January|Dissipation year=1999|Date tiebreak=1|Category=TL|Winds=30|Pressure=996|Areas=|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

|-

| Olinda || {{Sort|19990120|20 – 21 January}} || bgcolor=#{{storm colour|A1}}|Category 1 tropical cyclone || bgcolor=#{{storm colour|A1}}|{{convert|45|kn|km/h mph|round=5|order=out|abbr=on|sortable=on}} || bgcolor=#{{storm colour|A1}}|{{convert|990|hPa|inHg|sigfig=4|abbr=on|sortable=on}} || New Caledonia || {{sort|1|Unknown}} || {{sort|1|Unknown}} ||{{cite web|title=1998 Tropical Cyclone Olinda (1999020S17158)|publisher=International Best Track Archive for Climate Stewardship|url={{IBTRACS url|id=1999020S17158}}|access-date=25 May 2022}}

|-

{{Australian cyclone season effects (cyclone)|Name=Damien-Birenda|System active=No|Single-day system=No|Formation day=21|Formation month=January|Formation year=1999|Dissipation day=28|Dissipation month=January|Dissipation year=1999|Date tiebreak=1|Category=3|Winds=85|Pressure=950|Areas=|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

|-

| Pete || {{sort|19980121|21 January – 2 February 1999}} || bgcolor=#{{storm colour|A2}}|Category 2 tropical cyclone || bgcolor=#{{storm colour|A2}}|{{convert|50|kn|km/h mph|round=5|order=out|abbr=on|sortable=on}} || bgcolor=#{{storm colour|A2}}|{{convert|985|hPa|inHg|sigfig=4|abbr=on|sortable=on}} || New Caledonia || {{sort|1|Unknown}} || {{sort|1|Unknown}} ||{{cite web|publisher=International Best Track Archive for Climate Stewardship|url={{IBTRACS url|id=1999021S15149}}|access-date=25 May 2022|title=1999 Tropical Cyclone Pete (1999021S15149)}}

|-

{{Australian cyclone season effects (cyclone)|Name=16P|System active=No|Single-day system=No|Formation day=24|Formation month=January|Formation year=1999|Dissipation day=27|Dissipation month=January|Dissipation year=1999|Date tiebreak=1|Category=TL|Winds=30|Pressure=993|Areas=|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

|-

{{Australian cyclone season effects (cyclone)|Name=18S|System active=No|Single-day system=No|Formation day=21|Formation month=January|Formation year=1999|Dissipation day=28|Dissipation month=January|Dissipation year=1999|Date tiebreak=1|Category=TL|Winds=40|Pressure=995|Areas=|Damage prefix=|Damage=None|Deaths prefix=|Deaths=None|References=}}

|-

{{Australian cyclone season effects (cyclone)|Name=Rona|System active=No|Single-day system=No|Formation day=9|Formation month=February|Formation year=1999|Dissipation day=12|Dissipation month=February|Dissipation year=1999|Date tiebreak=1|Category=3|Winds=75|Pressure=970|Areas=|Damage prefix=|Damage=None|Deaths prefix=None|Deaths=None|References=}}

|-

| Hamish || {{sort|19980419|19 – 21 April 1999}} || bgcolor=#{{storm colour|A2}}|Category 2 tropical cyclone || bgcolor=#{{storm colour|A2}}|{{convert|55|kn|km/h mph|round=5|order=out|abbr=on|sortable=on}} || bgcolor=#{{storm colour|A2}}|{{convert|980|hPa|inHg|sigfig=4|abbr=on|sortable=on}} || None || {{sort|0|None}} || {{sort|0|None}} ||{{cite report|title=Tropical Cyclone Hamish|publisher=Australian Bureau of Meteorology|url=http://www.bom.gov.au/cyclone/history/pdf/hamish.pdf|date=29 April 2009|access-date=31 May 2022}}

{{Tropical cyclone season effects (bottom)|TC's=21 systems|dates=|winds=|pres=|damage=|deaths=}}

{{Portal|Tropical cyclones}}

• List of Southern Hemisphere tropical cyclone seasons
• Atlantic hurricane seasons: 1998, 1999
• Pacific hurricane seasons: 1998, 1999
• Pacific typhoon seasons: 1998, 1999
• North Indian Ocean cyclone seasons: 1998, 1999

{{Reflist}}

• [http://www.usno.navy.mil/JTWC Joint Typhoon Warning Center (JTWC)] {{Webarchive|url=https://web.archive.org/web/20100301105349/http://www.usno.navy.mil/JTWC |date=1 March 2010 }}.
• [https://web.archive.org/web/20080723222148/http://www.bom.gov.au/weather/cyclone/index.shtml Australian Government Bureau of Meteorology].
• [https://web.archive.org/web/20070421094952/http://www.wmo.int/index-en.html World Meteorological Organization]
• [http://ftp.wmo.int/pages/prog/www/TCP_vO/Reports/RA%20V%20TCC-VIII%20FINAL%20REPORT.pdf RA V Tropical Cyclone Committee Final Report]
• [http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/atcr/1999atcr/pdf.html Joint Typhoon Warning Center 1999 ATCR] {{Webarchive|url=https://web.archive.org/web/20110607041939/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/atcr/1999atcr/pdf.html |date=7 June 2011 }}
• [ftp://ftp.bom.gov.au/anon2/home/ncc/cyclone/cyclones_newformat.zip Raw cyclone track data]{{dead link|date=May 2025|bot=medic}}{{cbignore|bot=medic}}
• [http://www.bom.gov.au/inside/services_policy/public/sigwxsum/sigwmenu.shtml BoM Monthly Significant Weather Summaries]
• [http://www.bom.gov.au/cyclone/history/wa/1999.shtml 1998–99 Annual Summary (Western Australia)]
• [http://australiasevereweather.com/cyclones/tropical_cyclones_1999_summaries_and_track_data.htm July 1998 to June 1999 Tropical Cyclone Summaries and Operational Track Data]
• [https://archive.today/20090512011942/http://australiasevereweather.com/cyclones/1999/summ1998-99.htm Gary Padgett's Southern Hemisphere 1998–1999 Tropical Cyclone Season Review]

{{1998–99 Australian region cyclone season buttons}}

{{Tropical cyclone season|1998|split-year=y}}

{{TC Decades|Year=1990|basin=Australian region|type=cyclone|shem=yes}}

{{DEFAULTSORT:1998-99 Australian Region Cyclone Season}}

Category:Australian region cyclone seasons