RSMC Nadi attaches a number and an F suffix to tropical disturbances that form in or move into the South Pacific.

The first numbered tropical disturbance of the season developed within a large area of atmospheric convection on December 4, to the northwest of the Fijian dependency of Rotuma.

[17][18] The system subsequently weakened and lost its organisation because of moderate to strong vertical windshear and was last noted during December 6.

[19][20] Tropical Disturbance 02F was first noted by the FMS during December 16, within an environment conducive for further development, about 340 km (210 mi) to the west of Honiara in the Solomon Islands.

[21][22] Over the next few days, the system remained poorly organised and slow-moving within an area of moderate vertical windshear, before it was last noted by the FMS during December 20, as it entered the Australian region.

[25] The system subsequently moved south-eastwards and remained poorly organised, before it was last noted by the FMS later that day while it was located to the south of San Cristobal Island.

[26] During April 6, the FMS reported that Tropical Depression 11F had developed within a monsoon trough, about 140 km (85 mi) to the north-east of Suva in Fiji.

[28][29][12] On April 18, RSMC Nadi reported that Tropical Disturbance 14F had developed within the monsoon trough, about 515 km (320 mi) to the northeast of Nukuʻalofa in Tonga.

[12] During April 22, the FMS reported that Tropical Disturbance 15F had developed around 500 km (310 mi) to the northeast of Honiara in the Solomon Islands.

[31] Over the next couple of days, the system remained poorly organised and near stationary to the northeast of the Solomon Islands, before it was last noted during April 24.