1979–80 South Pacific cyclone season

[1][2] Over the next few days the system initially moved south-eastwards into the Australian region, as it gradually developed further before it turned south-westwards towards the South Pacific during March 10.

[1] The Australian Bureau of Meteorology, subsequently reported that the depression, had developed into a tropical cyclone and named it Sina during March 11.

During March 13, the system peaked as a Category 3 severe tropical cyclone with 10-minute sustained wind speeds estimated at 120 km/h (75 mph), as it passed about 200 km (125 mi) to the southwest of New Caledonia.

[1] Over the next day the system moved eastwards and into the Australian region, where it ultimately developed into a severe tropical cyclone and impacted Queensland.

[3][1] During February 28, Simon's extratropical remnants moved back into the basin and impacted New Zealand, before they were last noted during March 3.