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2006–07 South Pacific 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 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.
Tropical cyclones between 160°E and 120°W and north of 25°S are monitored by the Fiji Meteorological Service in Nadi. Those that move south of 25°S are monitored by the Tropical Cyclone Warning Centre in Wellington, New Zealand.〔
==Seasonal outlooks==
During September 2006, the Fiji Meteorological Service (FMS) reported that the development of a weak to moderate El Niño episode was likely which could push into the early months of 2007. 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.〔 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 Dateline.〔 It was also predicted that a tropical cyclone may form during the early part of the season or during the pre season.〔 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.〔
The FMS along with other Pacific Meteorological services including New Zealand's MetService and National Institute of Water and Atmospheric Research (NIWA) and the Australian Bureau of Meteorology contributed to the Island Climate Update tropical cyclone outlook that was released during October 2006. The outlook took into account the developing weak to moderate El Niño conditions that had been observed across the Pacific.〔 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 Nino years.〔 It was also noted that at least half of the tropical cyclones reach hurricane force and become Category 3 Severe Tropical Cyclones.〔 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.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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