TC Selwyn formed about 650 km east southeast of Christmas Island from an area of convection within the monsoon trough, this was the first case of cross equatorial flow into the southern hemisphere for the 1997/98 season. During the same period TC Sid developed near the NT coast and moved into the Gulf of Carpentaria. Selwyn intensified rapidly to cyclone status early on the morning of 27 December and peaked at category three intensity during 28 December before weakening over open waters as it moved west. Apart from increasing swell along the NW coast the cyclone had no direct impact on the mainland or Island communities.
For more details see the TC Selwyn Report (pdf)
Track and intensity
All times in WST - subract 8 hours to convert to UTC.