Seventeen tropical cyclones occurred in the Australian region during the 1984-85 season compared with the ten-year average of about fourteen. Ten cyclones reached the severe category (120 km h-1 or more). The three most Intense tropical cyclones did not affect the mainland. Nine cyclones crossed the coast compared with the 21-year average of 4.8. Fortunately only two of these were classified as severe. The damage caused by the tropical cyclones was relatively minor and no fatalities or serious injuries were reported. Centre Island in the Gulf of Carpentaria recorded a sustained wind speed of 170 km h-1 and a minimum pressure of 973 mb during the passage of cyclone Sandy. A feature of the season was the relatively large number of oceanic cyclones with long life-spans. In the Australian region there were nineteen days with two cyclones active and five days with three cyclones active.
J. Kuuse (Sun,) studied this question.