Convective precipitation over tropical Brazil is characterized by strong annual variation of precipitation. This precipitation is associated with large scale features such as Intertropical Convergence Zone (ITCZ) over the northeast Brazil in austral autumn, and with South Atlantic Convergence Zone (SACZ) over the region from northwestem Brazil to the southeast. Over these regions convective activity begins in spring, at its peak in summer and seldom appears in winter. This sequence of events seen in the present study using the upper tropospheric wind data and the moisture parameters
