During the 1958-1959 season there were seven depressions detected over the North Western Australian region, of which only one failed to reach cyclone intensity. The depressions are classified into three types according to the diameter of the area affected by gale force winds. The depressions are listed and catalogued. The season is briefly discussed as a whole and finally each depression is discussed in detail under the headings of development, track, rainfall, winds, seas and damage.
Forecasting Section, Divisional Office, Brisbane (Tue,) studied this question.