Wind erosion involves the movement and deposition of soil particles by wind. It is most likely to occur when bare or sparsely covered soil is exposed to strong winds.
The effects of wind erosion were clearly evident to many people in Melbourne during the El Nino induced drought of 1982-83. On the 8th February 1983 loose topsoil from western Victoria and South Australia was picked up by a strong cold front and made its way past Melbourne.
The Bureau of Meteorology website provides further information on the Melbourne dust-storm of February 1983 (external link).
Melbourne dust storm