View source for 2006–07 South Pacific cyclone season

{{Short description|Tropical cyclone season}}
{{Infobox hurricane season
| Basin=SPac
| Year=2007
| Track=2006-2007 South Pacific cyclone season summary.png
| First storm formed=October 20, 2006
| Last storm dissipated=April 6, 2007
| Strongest storm name=[[Cyclone Xavier (2006)|Xavier]]
| Strongest storm pressure=930
| Strongest storm winds=95
| Average wind speed=10
| Total disturbances=15
| Total depressions=12
| Total hurricanes=6
| Total intense=2
| Fatalities=
| Damages=
| Inflated=
| five seasons=[[2004–05 South Pacific cyclone season|2004–05]], [[2005–06 South Pacific cyclone season|2005–06]], '''2006–07''', [[2007–08 South Pacific cyclone season|2007–08]], [[2008–09 South Pacific cyclone season|2008–09]]
| South Indian season=2006–07 South-West Indian Ocean cyclone season
| South Pacific season=2006–07 Australian region cyclone season
}}
The '''2006–07 South Pacific cyclone season''' was an event in the annual cycle of [[tropical cyclone]] formation. It began on November 1, 2006 and ended on April 30, 2007. These dates conventionally delimit the period of each year when most tropical cyclones form in the southern Pacific Ocean east of [[160th meridian east|160°E]]. Additionally, the regional tropical cyclone operational plan defines a ''tropical cyclone year'' separately from a ''tropical cyclone season'', and the "tropical cyclone year" runs from July 1, 2006 to June 30, 2007.{{RA V Tropical cyclone operational plan}}

Tropical cyclones between [[160th meridian east|160°E]] and [[120th meridian west|120°W]] and north of [[25th parallel south|25°S]] are monitored by the [[Fiji Meteorological Service]] in [[Nadi]]. Those that move south of [[25th parallel south|25°S]] are monitored by the [[Tropical Cyclone Warning Centre]] in [[Wellington]], New Zealand.<ref name="SPAC TCOP"/>

__TOC__
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== Seasonal outlooks ==
{| class="toccolours" cellspacing="0" style="float:right; margin-left:1em;"
|- style="background:#ccccff"
! Source<br />Record !! <small>[[Tropical Cyclone|Tropical<br />Cyclone]]</small> !! <small>[[Severe Tropical Cyclone|Severe<br />Tropical Cyclone]]</small> !! <small>Ref</small>
|-
| ''Record high:'' || align="right"|[[1997–98 South Pacific cyclone season|1997–98]]:16 || align="right"|[[1982–83 South Pacific cyclone season|1982–83]]:10 ||<ref name="GUI">{{cite report|publisher=Fiji Meteorological Service |title=Tropical Cyclone Guidance for Season 2010/11 for the Fiji and the Southwest Pacific |author=Climate Services Division |date=October 26, 2010 |access-date=May 19, 2024 |url=http://www.pacificdisaster.net/doc/FMS_2010_TC_Guide2010_2011.pdf |archive-url=https://web.archive.org/web/20240519224155/http://www.pacificdisaster.net/doc/FMS_2010_TC_Guide2010_2011.pdf |url-status=live |archive-date=May 19, 2024}}</ref>
|-
| ''Record low:'' || align="right"|[[2003–04 South Pacific cyclone season|2003–04]]:&nbsp;3 || align="right"|[[1994–95 South Pacific cyclone season|1994–95]]:&nbsp;1 ||<ref name="GUI"/>
|-
| ''Activity during the season'' || align="right"|6 || align="right"|2
|}

During September 2006, the [[Fiji Meteorological Service]] <small>(FMS)</small> reported that the development of a weak to moderate El Niño episode was likely which could push into the early months of 2007.<ref name="ENSO SEP">{{cite report |publisher=Fiji Meteorological Service |author=Climate Services Division |title=ENSO Update: September 2006 |issue=1 |date=September 2006 |url=http://www.pacificdisaster.net/pdnadmin/data/original/fms_enso_update_06.pdf |accessdate=August 30, 2015 |archivedate=September 24, 2015 |archiveurl=https://web.archive.org/web/20150924063631/http://www.pacificdisaster.net/pdnadmin/data/original/fms_enso_update_06.pdf |url-status=dead |df=mdy-all }}</ref> As a result, the FMS predicted that the El Niño would have a significant effect on tropical cyclone frequency and distribution within the South Pacific basin and beyond during the upcoming season.<ref name="ENSO SEP"/> They also predicted that the season could see an above average number of tropical cyclones occur, with a greater tendency for them to form near and east of the [[International Date Line]].<ref name="ENSO SEP"/> It was also predicted that a tropical cyclone may form during the early part of the season or during the pre season.<ref name="ENSO SEP"/> The FMS also predicted that the island nations of [[Fiji]], [[Tonga]], [[Niue]], [[Samoa]] and the [[Cook Islands]], had a greater than normal chance of being affected by a tropical cyclone.<ref name="ENSO SEP"/>

The FMS along with other Pacific Meteorological services including New Zealand's [[MetService]] and [[National Institute of Water and Atmospheric Research]] <small>(NIWA)</small> and the Australian [[Bureau of Meteorology]] contributed to the [[Island Climate Update tropical cyclone outlook]] that was released during October 2006.<ref name="NIWA">{{cite journal|publisher=New Zealand's National Institute of Water and Atmospheric Research|date=October 1, 2006|title=Tropical cyclone guidance for the 2006–07 season|accessdate=August 30, 2015|journal=Island Climate Update|issue=73|page=2|url=http://www.niwa.co.nz/climate/icu/island-climate-update-73-october-2006/feature-article}}</ref> The outlook took into account the developing weak to moderate El Niño conditions that had been observed across the Pacific.<ref name="NIWA"/> The outlook called for an above average number of tropical cyclones to develop during the 2006–07 season, with ten tropical cyclones occurring on average between 135°E and 120°W during El Niño years.<ref name="NIWA"/> It was also noted that at least half of the tropical cyclones reach hurricane force and become Category 3 Severe Tropical Cyclones.<ref name="NIWA"/> The Island Climate Outlook predicted that the first tropical cyclone of the season could occur, before the end of November or about a month earlier than usual.<ref name="NIWA"/>

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== Seasonal summary ==
<div style="text-align: center;">
<timeline>
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 from:20/10/2006 till:26/10/2006 color:C4 text:[[Cyclone Xavier (2006)|Xavier (C4)]]
 from:24/10/2006 till:29/10/2006 color:TD text:02F (TD)
 from:01/11/2006 till:03/11/2006 color:TD text:03F (TD)
 from:16/11/2006 till:26/11/2006 color:C3 text:Yani (C3)
 from:19/11/2006 till:04/12/2006 color:TD text:05F (TD)
 from:09/12/2006 till:17/12/2006 color:TD text:06F (TD)
 from:18/01/2007 till:25/01/2007 color:C2 text:Zita (C2)
 barset:break
 from:21/01/2007 till:27/01/2007 color:C2 text:[[Cyclone Arthur (2007)|Arthur (C2)]]
 from:01/02/2007 till:05/02/2007 color:TD text:09F (TD)
 from:25/03/2007 till:29/03/2007 color:C2 text:Becky (C2)
 from:01/04/2007 till:06/04/2007 color:C2 text:[[Cyclone Cliff|Cliff (C2)]]

 bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas
 from:01/10/2006 till:01/11/2006 text:October
 from:01/11/2006 till:01/12/2006 text:November
 from:01/12/2006 till:01/01/2007 text:December
 from:01/01/2007 till:01/02/2007 text:January
 from:01/02/2007 till:01/03/2007 text:February
 from:01/03/2007 till:01/04/2007 text:March
 from:01/04/2007 till:01/05/2007 text:April

TextData =
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 text:"(For further details, please see"
 pos:(713,23)
 text:"[[Tropical cyclone scales#Comparisons across basins|scales]])"
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</div>

The 2006–07 South Pacific cyclone season got off to an early start with a tropical disturbance developing into [[Cyclone Xavier (2006)|Cyclone Xavier]], late on October 21. Xavier [[rapid deepening|rapidly intensified]] and became a category three [[Severe Tropical Cyclone]] on the [[Australian tropical cyclone intensity scale]] during the next day. As a Severe Tropical Cyclone, Xavier passed over Tikopia and then continued to intensify and reached its peak wind speeds early on October 24. Xavier then rapidly weakened during the next day which led to the final advisories being issued on October 26. Whilst Xavier was active, [[Tropical Depression 02F (2006)|Tropical Depression 02F]] formed on October 24 to the northeast of [[American Samoa]]. As the depression moved towards the west, it remained weak as it was badly affected by Cyclone Xavier's outflow, the final advisory was released on October 29. Early on November 1, [[Tropical Depression 03F (2006)|Tropical Disturbance 03F]] formed to the northeast of Fiji. It was then upgraded to a Tropical Depression later that day. The depression then meandered around the [[International Date Line]] for a couple days without any significant development, with the final advisory being issued by RSMC Nadi early on November 3. [[Cyclone Yani (2006)|Cyclone Yani]] formed as a weak tropical disturbance on November 16, it was upgraded into Tropical Depression 04F early the next day. Over the next few days the depression moved towards the west gradually developing until a [[Tropical Cyclone Formation Alert]] was issued late on November 21. Early the next day it was upgraded to Cyclone Yali by RSMC Nadi and designated as 02P by the JTWC, after being classified Yani started to intensify quite quickly becoming a Category three severe tropical cyclone early on November 23. Yali then reached its peak windspeeds later that day before starting to rapidly weaken early on November 24, as it entered an area of higher wind shear and was downgraded to a Tropical Depression later that day.

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== Systems ==

=== Severe Tropical Cyclone Xavier ===
{{Infobox tropical cyclone small
|Basin=SPac
|Image=Xavier 2006-10-24 0000Z.jpg
|Track=Xavier 2006 track.png
|Formed=October 20
|Dissipated=October 26
|10-min winds=95
|1-min winds=115
|Pressure=930
}}
{{Main|Cyclone Xavier (2006)}}
During October 20, the JTWC and the FMS started to monitor a tropical depression, that had developed within the [[South Pacific Convergence Zone]] to the north of [[Temotu Province]] in the [[Solomon Islands]].<ref name="Seasonal Summary">{{cite report|date=December 8, 2008|accessdate=August 30, 2015|title=Tropical Cyclone Seasonal Summary 2006-07|author=RSMC Nadi&nbsp;— Tropical Cyclone Centre|publisher=Fiji Meteorological Service|url=https://www.wmo.int/pages/prog/www/tcp/Best%20Tracks/documents/TCSeasonalSummary06-07.doc}}</ref><ref name="FIJI BT 06-07">{{cite web|date=May 22, 2009|title=RSMC Nadi&nbsp;— Tropical Cyclone Centre Best Track Data for 2006/07 Cyclone Season|accessdate=August 30, 2015|website=International Best Track Archive for Climate Stewardship|publisher=Fiji Meteorological Service|url=ftp://eclipse.ncdc.noaa.gov/pub/ibtracs/.original_source/nadi/RSMC-Nadi-2006-07-BT-Data.txt.htm|author=RSMC Nadi&nbsp;— Tropical Cyclone Centre}}</ref><ref name="JTWC BT">{{Cite web |url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/2007/2007s-bsh/bsh012007.txt |title=Archived copy |access-date=2015-08-30 |archive-date=2010-03-04 |archive-url=https://web.archive.org/web/20100304055312/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/2007/2007s-bsh/bsh012007.txt |url-status=dead }}</ref> Over the next day conditions surrounding the system rapidly became favourable for further development, with convection starting to wrap into a well defined low level circulation centre.<ref name="Seasonal Summary"/><ref>{{cite web|date=October 21, 2006 |title=Tropical Cyclone Formation Alert October 21, 2006 21z |url=http://australiasevereweather.com/tropical_cyclones/2006_2007/warnings/tropical_cyclone_xavier_jtwc_advisories.htm |publisher=Joint Typhoon Warning Center |accessdate=August 30, 2015 |url-status=live |archiveurl=https://web.archive.org/web/20160303210958/http://australiasevereweather.com/tropical_cyclones/2006_2007/warnings/tropical_cyclone_xavier_jtwc_advisories.htm |archivedate=March 3, 2016 |website=Australian Severe Weather }}</ref> As a result, the depression rapidly developed further and was named Xavier by the FMS during October 22, after it had become a category 1 tropical cyclone on the [[Australian tropical cyclone intensity scale]].<ref name="Seasonal Summary"/><ref name="FIJI BT 06-07"/> After the system was named the JTWC initiated advisories on the system and designated it as Tropical Cyclone 01P, while it was located over the Santa Cruz Islands.<ref name="Seasonal Summary"/><ref>{{cite web|date=October 22, 2006 |publisher=Joint Typhoon Warning Center |accessdate=August 30, 2015 |url=http://australiasevereweather.com/tropical_cyclones/2006_2007/warnings/tropical_cyclone_xavier_jtwc_advisories.htm |title=Tropical Cyclone Warning 1 October 22, 2006 03z |url-status=live |archiveurl=https://web.archive.org/web/20160303210958/http://australiasevereweather.com/tropical_cyclones/2006_2007/warnings/tropical_cyclone_xavier_jtwc_advisories.htm |website=Australian Severe Weather |archivedate=March 3, 2016 }}</ref> Throughout October 22, Xavier's rapid intensification continued with it developing an [[Eye (cyclone)|eye]] feature and becoming a category 3 severe tropical cyclone.<ref name="Seasonal Summary"/><ref name="FIJI BT 06-07"/> During that day the system performed a small cyclonic loop over Temotu Province and passed near or over the [[Santa Cruz Island]] of [[Tikopia]].<ref name="Seasonal Summary"/><ref name="GPOCT06">{{cite web|title=Monthly Global Tropical Cyclone Summary: October 2006 |url=http://www.australiasevereweather.com/cyclones/2007/summ0610.htm |date=February 6, 2007 |url-status=live |accessdate=August 30, 2015 |website=Australian Severe Weather |archivedate=September 23, 2015 |author=Padgett, Gary |archiveurl=https://web.archive.org/web/20150923190641/http://www.australiasevereweather.com/cyclones/2007/summ0610.htm }}</ref> After passing near or over Tikopia the system started to move south-eastwards during that day, as a trough of low pressure created a break in the ridge of high pressure that was steering Xavier.<ref>{{cite web|date=October 23, 2006 |publisher=Joint Typhoon Warning Center |accessdate=August 30, 2015 |title=Tropical Cyclone Warning 3 October 23, 2006 03z |url=http://australiasevereweather.com/tropical_cyclones/2006_2007/warnings/tropical_cyclone_xavier_jtwc_advisories.htm |archivedate=March 3, 2016 |url-status=live |archiveurl=https://web.archive.org/web/20160303210958/http://australiasevereweather.com/tropical_cyclones/2006_2007/warnings/tropical_cyclone_xavier_jtwc_advisories.htm |website=Australian Severe Weather }}</ref>

The [[Fiji Meteorological Service|FMS]] subsequently estimated during October 24, that the system had peaked as a Category 4 Severe Tropical Cyclone with 10-minute sustained wind speeds of {{convert|175|km/h|mph|round=5|abbr=on}}, while it was located about {{convert|220|km|mi|round=5|abbr=on}} to the east of [[Vanua Lava]] in northern [[Vanuatu]].<ref name="Seasonal Summary"/><ref name="FIJI BT 06-07"/> The JTWC also estimated during October 24, that the system had peaked with 1-minute sustained wind speeds of {{convert|215|km/h|mph|round=5|abbr=on}}, which made it equivalent to a category 4 hurricane on the [[Saffir-Simpson hurricane wind scale]].<ref name="JTWC BT"/> Over the next day the system maintained its peak intensity as it moved south-eastwards, before it turned westwards during the next day towards Vanuatu and rapidly weakened after it moved into an area of cooler sea-surface temperatures and strong vertical wind-shear.<ref name="Seasonal Summary"/><ref name="FIJI BT 06-07"/><ref name="GPOCT06"/> As a result, during October 26, The FMS and JTWC both reported that the system had weakened into a tropical depression, before the systems remnants were last noted by the FMS during October 28.<ref name="Seasonal Summary"/><ref>{{cite web|date=October 26, 2006 |publisher=Joint Typhoon Warning Center |accessdate=August 30, 2015 |title=Tropical Cyclone Warning 9 October 26, 2006 03z |archiveurl=https://web.archive.org/web/20160303210958/http://australiasevereweather.com/tropical_cyclones/2006_2007/warnings/tropical_cyclone_xavier_jtwc_advisories.htm |website=Australian Severe Weather |archivedate=March 3, 2016 |url-status=live |url=http://australiasevereweather.com/tropical_cyclones/2006_2007/warnings/tropical_cyclone_xavier_jtwc_advisories.htm }}</ref> On the Santa-Cruz Islands of Utupua and Vanikolo some minor tree damage was reported, while extensive damage to food crops occurred at Tikopia.<ref name="Seasonal Summary"/><ref name="GPOCT06"/> However, Radio New Zealand reported that overall damage at Tikopia was considered to be light given the circumstances.<ref name="GPOCT06"/> Strong and gusty winds, rough seas and moderate to heavy swells were reported within the eastern Vanuatuan islands, however, no significant damage was reported within the islands.<ref name="Seasonal Summary"/><ref name="GPOCT06"/>

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=== Tropical Depression 02F ===
{{Infobox tropical cyclone small
|Basin=SPac
|Formed=October 24
|Dissipated=October 29
|Type=spdepression
|Pressure=1004
}}
{{See also|List of off-season South Pacific tropical cyclones}}
During October 24, the FMS reported that the second tropical depression of the season had developed, within a trough of low pressure about {{convert|555|km|mi|abbr=on|round=5}} to the northwest of [[American Samoa]].<ref name="GPOCT06"/><ref name="24/10">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/10/24/text/Severe/Severe_24.txt|title=Severe Weather Warnings issued on 24-10-2006|date=2006-10-24|work=[[Fiji Meteorological Service]], [[Bureau of Meteorology (Australia)|Bureau of Meteorology]]|publisher=MT Archive|accessdate=2009-06-29}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> Deep convection had persisted around the center however it was poorly organised with multiple low level circulation centers being reported with environmental shear around the system minimal.<ref name="24/10"/> During the next day as it moved towards the west and crossed the International Date Line the depression lost all its deep convection.<ref name="25/10">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/10/25/text/Severe/Severe_25.txt|title=Severe Weather Warnings issued on 25-10-2006|date=2006-10-25|work=[[Fiji Meteorological Service]], [[Bureau of Meteorology (Australia)|Bureau of Meteorology]]|publisher=MT Archive|accessdate=2009-06-29}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The low level circulation center had become difficult to locate as the depression was being influenced unfavorably by the outflow from Cyclone Xavier.<ref name="GPOCT06"/><ref name="25/10"/> As a result of the outflow the depression became separated from the southeasterly surge which had been helping to develop the system whilst the [[westerlies]] to the north of the system remained weak.<ref name="25/10"/><ref name="26/10">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/10/26/text/Severe/Severe_26.txt|title=Severe Weather Warnings issued on 26-10-2006|date=2006-10-26|work=[[Fiji Meteorological Service]], [[Bureau of Meteorology (Australia)|Bureau of Meteorology]]|publisher=MT Archive|accessdate=2009-06-29}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The final advisory was then issued on October 29 by RSMC Nadi as the depression had completely dissipated.<ref name="GPOCT06"/>
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=== Tropical Depression 03F ===
{{Infobox tropical cyclone small
|Basin=SPac
|Formed=November 1
|Dissipated=November 3
|Type=spdepression
|Pressure=1004
}}
Early on November 1, RSMC Nadi reported that Tropical Disturbance 03F, had developed to the northeast of Fiji, with multiple circulation centers.<ref name="01/11">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/01/text/Severe/Severe_01.txt|title=Severe Weather Warnings issued on 01-11-2006|date=2006-11-01|work=[[Fiji Meteorological Service]]|publisher=MT Archive|accessdate=2009-06-29}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> Later that day as the convection was now displaced to the north of the low level circulation center and the disturbance had become better organized it was designated as a tropical depression.<ref name="01/11"/> The system then meandered around in the same general area for a couple days without any development until the final advisory was issued by RSMC Nadi early on November 3.<ref name="01/11"/><ref name="02/11">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/02/text/Severe/Severe_02.txt|title=Severe Weather Warnings issued on 02-11-2006|date=2006-11-02|work=[[Fiji Meteorological Service]]|publisher=MT Archive|accessdate=2009-06-29}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref name="03/11">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/03/text/Severe/Severe_03.txt|title=Severe Weather Warnings issued on 03-11-2006|date=2006-11-03|work=[[Fiji Meteorological Service]]|publisher=MT Archive|accessdate=2009-06-29}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
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=== Severe Tropical Cyclone Yani ===
{{Infobox tropical cyclone small
|Basin=SPac
|Image=Yani 2006-11-23 0309Z.jpg
|Track=Yani 2006 track.png
|Formed=November 16
|Dissipated=November 26
|10-min winds=75
|1-min winds=70
|Pressure=960
}}
Late on November 16 a weak tropical disturbance formed to the north-west of Tuvalu embedded within the [[South Pacific Convergence Zone]].<ref name="Seasonal Summary"/><ref name="16-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/16/text/Severe/Severe_16.txt|title=Tropical Cyclone Advisories issued on November 16|date=2006-11-16|work=Fiji Meteorological Service|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The disturbance did not have any organised convection near the low level circulation centre and was located in an area of low vertical wind shear.<ref name="16-11-06"/> Early the next day whilst the organisation of the system had not improved much, there had been enough of an increase in convection in the northern and southern quadrants for RSMC Nadi to designate the disturbance as Tropical Depression 04F.<ref name="17-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/17/text/Severe/Severe_17.txt|title=Tropical Cyclone Advisories issued on November 17|date=2006-11-17|work=[[Fiji Meteorological Service]]|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> Over the next couple of days the depression gradually moved towards the south-west before the low level circulation center was relocated to the north of Vanuatu early on November 19.<ref name="18-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/18/text/Severe/Severe_18.txt|title=Tropical Cyclone Advisories issued on November 18|date=2006-11-18|work=Fiji Meteorological Service|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref name="19-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/19/text/Severe/Severe_19.txt|title=Tropical Cyclone Advisories issued on November 19|date=2006-11-19|work=Fiji Meteorological Service|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The depression continued to gradually develop, with a Tropical Cyclone Formation Alert being issued late on November 21 as convection had erupted about the low level circulation centre with bands of convection wrapping around the low level circulation significantly.<ref name="Seasonal Summary"/><ref name="20-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/20/text/Severe/Severe_20.txt|title=Tropical Cyclone Advisories issued on November 20|date=2006-11-20|work=Fiji Meteorological Service|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref name="21-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/21/text/Severe/Severe_21.txt|title=Tropical Cyclone Advisories issued on November 21|date=2006-11-21|work=Fiji Meteorological Service|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref name="JTWC: Yani">{{cite web|url=http://australiasevereweather.com/tropical_cyclones/2006_2007/warnings/tropical_cyclone_yani_jtwc_advisories.htm|title=Tropical Cyclone Yani: JTWC Advisories|date=2006-11-21|work=Joint Typhoon Warning Center|publisher=Australian Severe Weather|accessdate=2009-07-14}}</ref>

The depression was then upgraded to a category one tropical cyclone on the Australian Tropical Cyclone Intensity scale early on November 22, with the name ''Yani'' being assigned.<ref name="Seasonal Summary"/><ref name="22-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/22/text/Severe/Severe_22.txt|title=Tropical Cyclone Advisories issued on November 22|date=2006-11-22|work=Fiji Meteorological Service|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The JTWC also upgraded Yani to a tropical cyclone whilst the cyclone was located approximately 425&nbsp;km, (265&nbsp;miles), to the southeast of [[Honiara]], in the [[Solomon Islands]].<ref name="JTWC: Yani"/> Yani then intensified fairly rapidly, being upgraded to a category two cyclone later that day while an eye was noted to be beginning to form.<ref name="23-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/23/text/Severe/Severe_23.txt|title=Tropical Cyclone Advisories issued on November 23|date=2006-11-23|work=Fiji Meteorological Service|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> Yani was then upgraded to a category three severe tropical cyclone early the next day as an eye became established.<ref name="23-11-06"/> Later that day, Yani then reached its peak pressure of 960&nbsp;hPa and its peak windspeeds of 140&nbsp;km/h (85&nbsp;mph) (10-min) and 130&nbsp;km/h (80&nbsp;mph) (1-min).<ref name="Seasonal Summary"/><ref name="BT">{{cite web|url=http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/2007/2007s-bsh/bsh022007.txt|title=Tropical Cyclone Yani: JTWC Best track|date=2008-05-12|publisher=Joint Typhoon Warning Center|accessdate=2009-07-14|archive-date=2010-03-04|archive-url=https://web.archive.org/web/20100304055317/http://www.usno.navy.mil/NOOC/nmfc-ph/RSS/jtwc/best_tracks/2007/2007s-bsh/bsh022007.txt|url-status=dead}}</ref> Yani maintained its peak intensity until early on November 24, when the storm began to weaken under the force of strengthening shear that tore away its low level circulation centre and was downgraded to a Tropical Depression by RSMC Nadi later that day.<ref name="Seasonal Summary"/><ref name="24-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/24/text/Severe/Severe_24.txt|title=Tropical Cyclone Advisories issued on November 24|date=2006-11-24|work=Fiji Meteorological Service|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> The JTWC then issued their final advisory early the next day whilst RSMC Nadi kept issuing advisories until late on November 26 as the depression moved into [[Bureau of Meteorology (Australia)|TCWC Brisbane's]] area of responsibility. The JTWC later reported that it had dissipated that day.<ref name="BT"/><ref name="25-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/25/text/Severe/Severe_25.txt|title=Tropical Cyclone Advisories issued on November 25|date=2006-11-25|work=Fiji Meteorological Service|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref><ref name="26-11-06">{{cite web|url=http://mtarchive.geol.iastate.edu/2006/11/26/text/Severe/Severe_26.txt|title=Tropical Cyclone Advisories issued on November 26|date=2006-11-26|work=Fiji Meteorological Service|publisher=MT Archive|accessdate=2009-07-14}}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

{{Clear}}

=== Tropical Depression 05F ===
{{Infobox tropical cyclone small
|Basin=SPac
|Image=05F 2006-12-01 2330Z.jpg
|Track=4-P 2006 track.png
|Formed=November 29
|Dissipated=December 4
|10-min winds=30
|1-min winds=35
|Pressure=997
}}
An area of disturbed weather developed east-northeast of the [[Solomon Islands]] on November 28. RSMC Nadi began monitoring it as a tropical disturbance early on November 29 as it moved westward in a favorable environment for development. The disturbance later that day was classified as a tropical depression. On November 30, the [[Joint Typhoon Warning Center]] initiated advisories on the storm, internally numbered Tropical Cyclone 04P. Under heavy [[wind shear]], the storm never developed further and the JTWC stopped advisories on December 1, shortly after RSMC Nadi.
{{clear}}

=== Tropical Depression 06F ===
{{Infobox tropical cyclone small
|Basin=SPac
|Formed=January 9
|Dissipated=January 17
|10-min winds=30
|Pressure=1000
}}

On January 9 RSMC Nadi identified a tropical depression well east of the [[International Date Line]], located in a sheared environment, with convection having persisted for 24 hours. It never developed further and late on January 15 RSMC Nadi noted that 06F had become extratropical. RSMC Nadi last noted it two days later.
{{Clear}}

=== Tropical Cyclone Zita ===
{{Infobox tropical cyclone small
|Basin=SPac
|Image=TC Zita 2007 Terra MODIS.jpg
|Track=Zita 2007 track.png
|Formed=January 18
|Dissipated=January 25
|10-min winds=60
|1-min winds=60
|Pressure=975
}}
On January 16 a [[Fiji Meteorological Service|RSMC Nadi]] marine bulletin identified a tropical disturbance east of the [[International Date Line]]. The low level circulation center was unidentifiable but was estimated to be at the southwestern edge of the major convection. On January 18, RSMC Nadi identified the disturbance as a tropical depression while the system was still poorly organized. On January 20, the [[Joint Typhoon Warning Center]] noted the system and treated it as a tropical disturbance. On January 22, the JTWC issued a [[Tropical Cyclone Formation Alert]] on the system. The system was assigned the name Zita by RSMC Nadi and commented in their tropical disturbance summary that the cyclone had undergone [[Rapid intensification|explosive development]]. It then quickly began [[Extratropical cyclone|extratropical]] transition as it moved south-southeast, with the JTWC declaring it extratropical on January 24. It entered the warning area of [[Tropical Cyclone Warning Center|TCWC]] Wellington later that day as it passed south of [[25th parallel south|25°S]], and completed extratropical transition early on January 25.
{{clear}}

=== Tropical Cyclone Arthur ===
{{Infobox tropical cyclone small
|Basin=SPac
|Image=Arthur 2007-01-25 0040Z.jpg
|Track=Arthur 2007 track.png
|Formed=January 21
|Dissipated=January 27
|10-min winds=60
|1-min winds=65
|Pressure=975
}}
{{Main|Cyclone Arthur (2007)}}
Forming as tropical depression on January&nbsp;25, Arthur [[Rapid intensification|rapidly intensified]] into a strong Category 2 cyclone on the [[Tropical cyclone scales#Australia|Australian intensity scale]] according to the [[Regional Specialized Meteorological Centre]] in [[Nadi, Fiji]]. The [[Joint Typhoon Warning Center]] assessed the storm to have peaked as a minimal [[Category 1 hurricane|Category 1 cyclone]]. Shortly after peaking in intensity, the cyclone began to deteriorate due to unfavorable conditions. Quickly moving towards the east-southeast, the Arthur began to undergo an [[Extratropical cyclone|extratropical transition]]. After turning towards the southeast, the center of circulation was almost fully exposed due to strong [[wind shear]]. However, Arthur briefly re-strengthened late on January&nbsp;26 before becoming extratropical the next day. Tropical Cyclone Arthur affected several small islands during its existence. [[French Polynesia]] observed the most noteworthy effects from the storm, where several landslides damaged a few homes.
{{clear}}

=== Tropical Depression 09F ===
{{Infobox tropical cyclone small
|Basin=SPac
|Image=11P 2007-02-03 2235Z.jpg
|Track=11-P 2006 track.png
|Formed=February 1
|Dissipated=February 5
|10-min winds=30
|1-min winds=35
|Pressure=997
}}
RSMC Nadi noted a tropical disturbance in the general area of [[10th parallel south|10°S]] east of the [[International Date Line]] on January 30. On February 2, RSMC Nadi upgraded it to a tropical depression, and the next day, the [[Joint Typhoon Warning Center]] issued a [[Tropical Cyclone Formation Alert]]. On February 4, the JTWC upgraded the disturbance to a tropical cyclone, giving it the designation 11P. However, it quickly became [[extratropical]], and the final warning was issued just 24 hours later. RSMC Nadi also stopped tracking the low on February 5.
{{clear}}

=== Tropical Depression 12F ===
{{Infobox tropical cyclone small
|Basin=SPac
|Formed=March 21
|Dissipated=March 25
|10-min winds=30
|Pressure=998
}}
An area of disturbed weather formed northwest of [[Fiji]] on March 19 and moved southeast over the next three days with little change in organisation. On March 21, the system began to increase in organization, and [[Fiji Meteorological Service|RSMC Nadi]] designated the system Tropical Depression 12F late that day, noting that the potential for development into a tropical cyclone was low to moderate due to increasing [[wind shear]] to the south. The [[Joint Typhoon Warning Center]] issued a [[Tropical Cyclone Formation Alert]] on the now-quasi-stationary system the next day.<ref>[https://archive.today/20240522135226/https://www.webcitation.org/5NWjQYK5t?url=https://metocph.nmci.navy.mil/jtwc/warnings/sh9007web.txt WebCite query result<!-- Bot generated title -->]</ref> RSMC Nadi upgraded the potential for development to high and began issuing advisories later in the day, but the depression soon became disorganised due to increasing shear. The RSMC issued its last advisory early on March 25.<ref>[https://web.archive.org/web/20070904162649/http://www.met.gov.fj/aifs_prods/20032.txt WebCite query result<!-- Bot generated title -->]</ref>
{{Clear}}

=== Tropical Cyclone Becky ===
{{Infobox tropical cyclone small
|Basin=SPac
|Image=TC Becky 2007 Aqua Modis.jpg
|Track=Becky 2007 track.png
|Formed=March 25
|Dissipated=March 29
|10-min winds=60
|1-min winds=70
|Pressure=975
}}
An area of disturbed weather formed northwest of [[Vanuatu]] on March 24. The [[Tropical Cyclone Warning Centre]] in [[Brisbane]] began monitoring it as a tropical low early on March 25, before it moved eastward into the area of responsibility of [[Fiji Meteorological Service|RSMC Nadi]] later that day. RSMC Nadi designated the system Tropical Depression 13F and noted that it had a moderate potential for development into a tropical cyclone. Tropical disturbance advisories were initiated on March 26 as the system improved in organisation. The [[Joint Typhoon Warning Center]] designated it Tropical Cyclone 21P later that day. RSMC Nadi followed suit and upgraded the system to a tropical cyclone and named it Becky.

Becky initially strengthened quickly while moving south-southeastward, nearly reaching hurricane-equivalent intensity on March 27. RSMC Nadi initially issued a [[storm warning]] for Vanuatu, but the environment began to deteriorate, inhibiting any further strengthening. The cyclone began weakening late that day as it passed to the west of Vanuatu, and RSMC Nadi issued its final tropical disturbance advisory on Becky early on March 29.
{{clear}}

=== Tropical Cyclone Cliff ===
{{Main|Cyclone Cliff}}
{{Infobox tropical cyclone small
|Basin=SPac
|Image=Cliff 2007-04-05 0145Z.jpg
|Track=Cliff 2007 track.png
|Formed=April 1
|Dissipated=April 6
|10-min winds=55
|1-min winds=55
|Pressure=980
}}
Tropical Depression 14F, located around [[15th parallel south|15°S]] just west of the date line, was first warned on by RSMC Nadi on April 1 as a sheared system located in a highly sheared environment.<ref>[https://web.archive.org/web/20070816224452/http://www.met.gov.fj/aifs_prods/20036.txt WebCite query result<!-- Bot generated title -->]</ref> Despite this, the system managed to organise and intensify as it moved southeast, and was named Tropical Cyclone Cliff on April 4 near the [[International Date Line]]. The [[Joint Typhoon Warning Center]] designated it a tropical cyclone, the 23rd in the [[Southern Hemisphere]] for the season, later that day, as deep convective banding began to develop. Continuing to move generally southeast, Cliff peaked in intensity on April 5 before starting to weaken as it crossed into the area of responsibility of TCWC Wellington. Late that night, Cliff started to show signs of [[extratropical transition]], causing [[Dvorak technique|Dvorak]] satellite intensity estimates to fall. The JTWC issued its final advisory the next day, followed later that day by TCWC Wellington as it completed transition.
{{Clear}}

== Season effects ==
{{Pacific areas affected (Top)}}
|-
| {{Sort|01|Xavier}} || {{Sort|1021|October 21–28}} || bgcolor=#{{storm colour|A4}}|{{Sort|4|Category 4 severe tropical cyclone}} || bgcolor=#{{storm colour|A4}}|{{Sort|175|175&nbsp;km/h (110&nbsp;mph)}} || bgcolor=#{{storm colour|A4}}|{{Sort|0930|{{convert|930|hPa|inHg|sigfig=4|abbr=on}}}} || Solomon Islands, Vanuatu || Minimal || None ||
|-
| {{Sort|02|02F}} || {{Sort|1024|October 24&nbsp;— 29}} || bgcolor=#{{storm colour|TD}}|Tropical Depression || bgcolor=#{{storm colour|TD}}|{{Sort|020|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|{{convert|1004|hPa|inHg|sigfig=4|abbr=on}}}} || None || None || None ||
|-
| {{Sort|03|03F}} || {{Sort|1101|November 24&nbsp;— 3}} || bgcolor=#{{storm colour|TD}}|Tropical Depression || bgcolor=#{{storm colour|TD}}|{{Sort|020|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1004|{{convert|1004|hPa|inHg|sigfig=4|abbr=on}}}} || None || None || None ||
|-
| {{Sort|04|Yani}} || {{Sort|1126|November 16–26}} || bgcolor=#{{storm colour|A3}}|{{Sort|4|Category 3 severe tropical cyclone}} || bgcolor=#{{storm colour|A3}}|{{Sort|100|140&nbsp;km/h (85&nbsp;mph)}} || bgcolor=#{{storm colour|A3}}|{{Sort|0960|{{convert|960|hPa|inHg|sigfig=4|abbr=on}}}} || Solomon Islands || || ||
|-
| {{Sort|05|05F}} || {{Sort|1129|November 29&nbsp;–<br />December 4}} || bgcolor=#{{storm colour|TD}}|{{Sort|4|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|55&nbsp;km/h (35&nbsp;mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|0997|{{convert|997|hPa|inHg|sigfig=4|abbr=on}}}} || || || ||
|-
| {{Sort|06|06F}} || {{Sort|0109|January 9–17}} || bgcolor=#{{storm colour|TD}}|{{Sort|4|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|55&nbsp;km/h (35&nbsp;mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|1000|{{convert|1000|hPa|inHg|sigfig=4|abbr=on}}}} || || || ||
|-
| {{Sort|07|Zita}} || {{Sort|0118|January 18–25}} || bgcolor=#{{storm colour|A2}}|{{Sort|4|Category 2 tropical cyclone}} || bgcolor=#{{storm colour|A2}}|{{Sort|100|100&nbsp;km/h (65&nbsp;mph)}} || bgcolor=#{{storm colour|A2}}|{{Sort|0975|{{convert|975|hPa|inHg|sigfig=4|abbr=on}}}} || French Polynesia || || ||
|-
| {{Sort|08|Arthur}} || {{Sort|0121|January 21–27}} || bgcolor=#{{storm colour|A2}}|{{Sort|4|Category 2 tropical cyclone}} || bgcolor=#{{storm colour|A2}}|{{Sort|100|100&nbsp;km/h (65&nbsp;mph)}} || bgcolor=#{{storm colour|A2}}|{{Sort|0975|{{convert|975|hPa|inHg|sigfig=4|abbr=on}}}} || Samoan Islands, French Polynesia || || ||
|-
| {{Sort|09|09F}} || {{Sort|0321|February 1–5}} || bgcolor=#{{storm colour|TD}}|{{Sort|4|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|020|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|0998|{{convert|997|hPa|inHg|sigfig=4|abbr=on}}}} || Fiji || || ||
|-
| {{Sort|10|10F}} || {{Sort|1020|Not specified}} || bgcolor=#{{storm colour|disturbance}}|{{Sort|4|Tropical disturbance}} || bgcolor=#{{storm colour|disturbance}}|{{Sort|020|Not specified}} || bgcolor=#{{storm colour|disturbance}}|{{Sort|1020|Not specified}} || || || ||
|-
| {{Sort|11|11F}} || {{Sort|1020|Not specified}} || bgcolor=#{{storm colour|disturbance}}|{{Sort|4|Tropical disturbance}} || bgcolor=#{{storm colour|disturbance}}|{{Sort|020|Not specified}} || bgcolor=#{{storm colour|disturbance}}|{{Sort|1020|Not specified}} || || || ||
|-
| {{Sort|12|12F}} || {{Sort|0321|March 21–25}} || bgcolor=#{{storm colour|TD}}|{{Sort|4|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|055|55&nbsp;km/h (35&nbsp;mph)}} || bgcolor=#{{storm colour|TD}}|{{Sort|0998|{{convert|998|hPa|inHg|sigfig=4|abbr=on}}}} || || || ||
|-
| {{Sort|13|Becky}} || {{Sort|0325|March 25–29}} || bgcolor=#{{storm colour|A2}}|{{Sort|4|Category 2 tropical cyclone}} || bgcolor=#{{storm colour|A2}}|{{Sort|100|110&nbsp;km/h (70&nbsp;mph)}} || bgcolor=#{{storm colour|A2}}|{{Sort|0975|{{convert|975|hPa|inHg|sigfig=4|abbr=on}}}} || Solomon Islands, Vanuatu<br />New Caledonia || || ||
|-
| {{Sort|14|Cliff}} || {{Sort|0401|April 1–6}} || bgcolor=#{{storm colour|A2}}|{{Sort|4|Category 2 tropical cyclone}} || bgcolor=#{{storm colour|A2}}|{{Sort|100|100&nbsp;km/h (65&nbsp;mph)}} || bgcolor=#{{storm colour|A2}}|{{Sort|0980|{{convert|980|hPa|inHg|sigfig=4|abbr=on}}}} || Fiji || || ||
|-
| {{Sort|15|15F}} || {{Sort|1020|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|4|Tropical depression}} || bgcolor=#{{storm colour|TD}}|{{Sort|020|Not specified}} || bgcolor=#{{storm colour|TD}}|{{Sort|1020|Not specified}} || || || ||
|-
|-
{{TC Areas affected (Bottom)|TC's=15&nbsp;systems|dates=October 21&nbsp;– April 6|winds=175&nbsp;km/h (110&nbsp;mph)|pres={{convert|930|hPa|inHg|sigfig=4|abbr=on}}|damage=|deaths=|Refs=}}

== See also ==
{{Portal|Tropical cyclones}}
* Tropical cyclones in [[Tropical cyclones in 2006|2006]] and [[Tropical cyclones in 2007|2007]]
* Atlantic hurricane seasons: [[2006 Atlantic hurricane season|2006]], [[2007 Atlantic hurricane season|2007]]
* Pacific hurricane seasons: [[2006 Pacific hurricane season|2006]], [[2007 Pacific hurricane season|2007]]
* Pacific typhoon seasons: [[2006 Pacific typhoon season|2006]], [[2007 Pacific typhoon season|2007]]
* North Indian Ocean cyclone seasons: [[2006 North Indian Ocean cyclone season|2006]], [[2007 North Indian Ocean cyclone season|2007]]

== Notes ==
<references group=nb/>

== References ==
{{Reflist|30em}}

== External links ==
{{SPAC EL's}}
{{2006–07 South Pacific cyclone season buttons}}
{{Tropical cyclone season|2006|split-year=y}}
{{TC Decades|Year=2000|basin=South Pacific|type=cyclone|shem=yes}}

{{DEFAULTSORT:2006-07 South Pacific Cyclone Season}}
[[Category:2006–07 South Pacific cyclone season| ]]
[[Category:South Pacific cyclone seasons]]
[[Category:Articles which contain graphical timelines]]
[[Category:Tropical cyclones in 2006|Tropical cyclones in 2006]]
[[Category:Tropical cyclones in 2007|Tropical cyclones in 2007]]