[1] Most areas including Vanuatu, New Caledonia, Fiji, Tonga, Niue and Tuvalu, were thought to have an average risk of being impacted by one or more tropical cyclones.
[2] As a result, they noted that on average six or seven tropical cyclones, could be expected to develop over the Pacific Ocean, during a season characterised by a weak La Niña.
[2] During the season, a total of fifteen significant tropical disturbances were monitored and numbered by the Fiji Meteorological Service (FMS), within the South Pacific basin between 160°E and 120°W.
Cyclone Jasper then moved into the region early on March 24 at peak intensity, having developed inside TCWC Brisbane's area of responsibility two days earlier.
Early on December 3, RSMC Nadi reported that a Tropical Disturbance had formed near the Southern Cook Islands and was located in a moderately sheared environment and was moving towards the southeast.
[7] Over the next couple of days the depression gradually weakened with convection which was located in the southern and eastern quadrants became sheared and the low level circulation centre became exposed as it moved into an area of cooler sea surface temperatures.
[8] Late on December 6 RSMC Nadi issued their final advisory on the depression as it moved into TCWC Wellingtons area of responsibility and was expected to become a mid latitude low-pressure system within 12 hours.
Late on January 19, RSMC Nadi reported that a tropical disturbance had formed in a monsoonal trough of low pressure about 940 km to the north west of Papeete, in French Polynesia.
On January 24, RSMC Nadi reported that Tropical Disturbance 08F had developed within the monsoon trough and an area of minimal vertical windshear to the north of the Fijian dependency Rotuma.
[3] On February 1, RSMC Nadi reported that Tropical Depression 09F had developed within the monsoon trough about 575 km (355 mi) to the northeast of Port Vila, Vanuatu.
The next morning RSMC Nadi reported that the Low Level Circulation Center was obscured with indications of good inflow bands flowing into the depression from the north and west.
Early on February 5, RSMC Nadi issued its final advisory on the depression, as the systems low level circulation centre had become sheared and exposed.
[3] Over the next two days, the system gradually developed further as it moved westwards, before it passed over Vanuatu during February 15, with hostile environmental conditions influencing the depression's chance of becoming a tropical cyclone.
[3][26] However, during the next day, the FMS resumed issuing advisories on the depression after it had crossed New Caledonia and moved into an area of low vertical windshear.
[3][31] Innis was subsequently declared an extratropical cyclone early on February 18, as it briefly moved into the Australian region and MetService issued their first warning.
[35] During February 19–20, the low containing Innis remnants brought high winds, heavy rain and some minor flooding to several parts off New Zealand including from Auckland to Stewart Island.
[36] The heaviest rain was recorded in Taranaki, Canterbury and Otago, while 1 indirect death was reported after a car rolled over near Opotiki.
[36] On March 10, the FMS reported that Tropical Depression 11F had developed out of an area of low pressure that had spun down from the upper levels of the troposphere, about 380 km (235 mi) to the northeast of Rarotonga in the Southern Cook Islands.
On the evening of the 11th, with the system moving into minimal shear, and outflow aloft becoming well-established, its probability of becoming a tropical cyclone in the next 12 hours was raised to high.
[38] Early that afternoon the JTWC reported that the disturbances low level circulation centre had rapidly consolidated and issued a Tropical Cyclone Formation Alert on the developing system.
[42] Late on March 18, RSMC Nadi reported that Ken had reached its peak intensity with winds of 95 km/h (59 mph), which made it a Category 2 Cyclone.
[49] TCWC Wellington then issued their final advisory early on March 22, as it moved out of their eastern area of responsibility and was tracked by the Bureau of Meteorology for three more days as it crossed the Antarctic Peninsula into the Weddell Sea.
[3][55] 14F subsequently absorbed this shallow tropical disturbance, as it struggled to consolidate and organise to the north of Fiji, under the influence of vertical wind shear.
[56] The JTWC subsequently initiated advisories on Lin and designated it as Tropical Cyclone 25P, while it was located about 382 km (235 mi) to the northwest of Nuku'alofa.
[57] During April 4, Lin intensified further within favourable conditions and was classified as a Category 2 tropical cyclone, as it moved southeastwards towards the Tongan island of Tongatapu.
[65] On December 1, the FMS reported that the first tropical disturbance of the season, had developed to the northeast of the Samoan Islands in an area of moderate vertical wind shear.