Cyclone Orson originated out of a tropical low, monitored by the Australian Bureau of Meteorology, that formed northwest of Darwin, Australia on 17 April 1989.
Continuing on a southerly track, accelerating ahead of an approaching cold front, Cyclone Orson made landfall, near Dampier, around 4:45 am AWST on 23 April (2045 UTC 22 April) [REF].