[5] On January 27, a shallow tropical depression formed within the South Pacific Convergence Zone, about 430 km (265 mi) to the southeast of Funafuti, Tuvalu.

Ofa subsequently passed about 110 km (70 mi) to the west of the Western Samoan Island of Savai'i between 10:00 and 18:00 UTC during February 3.

[9] Early the next day as the system started to accelerate towards the south-southeast towards the island nation of Niue, the NWOC estimated that Ofa had peaked with 1-minute sustained wind speeds of 215 km/h (130 mph), which made it equivalent to a category 4 hurricane on the SSHWS.

[11] Later that day TCWC Nadi also estimated that the system had peaked with 10-minute sustained wind speeds of 185 km/h (115 mph) as a category 4 severe tropical cyclone,.

[7] Cyclone Ofa affected seven different island nations and caused gales or much stronger winds in six of those countries which resulted in damage ranging from moderate to very severe.

[12][13] During that day, Nancy recurved south-westwards around the southern extension of an upper-level trough of low pressure and moved back into the Australian region.

[14] The JTWC also monitored the system while it was in the basin and estimated that Nancy had peak 1-minute sustained winds of 120 km/h (75 mph), which made it equivalent to a category 1 hurricane on the SSHWS.

[14] The BoM later reanalysed the system and found that it had peaked as a category 2 tropical cyclone, with 10-minute sustained winds of 110 km/h (70 mph) while it was located within the basin.

[17] Over the next couple of days, the system moved through the Tasman Sea and passed near New Zealand's South Island, before it was absorbed into a high-latitude trough of low pressure.

[7] During March 16, the FMS started to monitor a shallow tropical depression, that had developed within the South Pacific Convergence Zone in between Vanuatu and Fiji.

[7][18] Over the next couple of days, the system caused strong winds and heavy rain over the island nation of Tuvalu, as it slowly moved south-eastwards, before it passed around 110 km (70 mi) to the east of Rotuma.

[10][19] The JTWC and the FMS both estimated during March 23, that the system had peaked with winds of 95 km/h (60 mph), which made it a Category 2 tropical cyclone on the Australian Scale.

[20] At this time, the system was located about 225 km (140 mi) to the south of Kadavu in Fiji and had started to move south-eastwards towards higher latitudes.

[7] The system impacted Fiji between March 19 - 24, where it caused strong winds and landslides, as well as minor damage to trees, houses and crops.

[22] On March 15, the precursor shallow tropical depression to Cyclone Ivor developed within the South Pacific convergence zone, about 390 km (240 mi) to the northeast of Port Villa in Vanuatu.