[4] A small, weak tropical low, later named Esther, developed over the Banda Sea on 19 December.
In a favorable environment for intensification, Grace strengthened on January 15 and 16, developing a ragged eye as seen on the satellite images.
On January 17, upper-level shear increased over the circulation and Grace became exposed as the tropical cyclone turned to the east.
Weakening continued during the next few days and Grace decayed into a remnant low on January 21 while located southeast of Nouméa.
[9] The origins of Vivienne-Fanja are unclear as a result of sparseness of data, due to a disruption in satellite imagery coverage.
On February 7, Willy was upgraded to a severe tropical cyclone with an estimated central pressure of 975 mb.
Strong wind shear caused Willy to quickly lose strength and it weakened below tropical cyclone intensity late on February 9.
Steered by a ridge to the south, it moved generally southwestward and intensified into Tropical Cyclone Annette, named by the Bureau of Meteorology.
[15] On 29 February 1984 Chloe crossed the coast near Roebourne, Western Australia where three houses were destroyed and twelve others unroofed.
Fifty people required evacuation as floodwaters from the Harding River rose to the lower steps of the Police Station.
Parts of the Wickham High Schools were severely damaged and two buildings and a boat were destroyed in the Cossack/Point Samson area.
After crossing the Cape York Peninsula, the system emerged into the Gulf of Carpentaria and later made landfall on 9 March at Port Roper, Northern Territory, which is just south of Numbulwar.
Inland, wind gusts as high as 100 km/h (60 mph) downed trees in the vicinity of the Roper River.
Tracking westward, the system attained gale-force winds by 18 March before striking the Cape York Peninsula.
After crossing the area, Kathy entered the Gulf of Carpentaria where environmental conditions favored significant development.
By this time, the storm had been tracking towards the southwest and struck the Sir Edward Pellew Group of Islands later on 22 March before moving over the Australian mainland as a slightly weaker system.
Once over land, Kathy rapidly degraded, losing gale-force winds within 24 hours; the storm dissipated over the Northern Territory on 24 March.
Over the next couple of days the system gradually developed further as it moved westwards into the South Pacific basin.