Contents: A summary of upper wind observations over Thailand and neighboring areas; Meteorological studies of Southeast Asia; Some preliminary results of the Barbados field program: A statistical measure of the importance of convection in tropical rainfall; Wind structure over a tropical island: A preliminary survey; Kinematics and dynamics of tropical precipitation; Hailstorms from tropics to mid-latitudes; Atmospheric electricity phenomena in the upper air over Poona, India; Friction over the sea; Comparison of mean seasonal pressure patterns over Africa with synoptic weather developments; Tropical rainfall patterns and associated meso-scale systems; A summary of mesoscale studies of instability patterns and winds in the tropics and subtropics at the University of Miami; Convection on the mesoscale; A circular cloud system south of Japan; Research at the national hurricane research project; Climatological aids to tropical analysis and forecasting; The feasibility of adding gravity waves to a common-model for numerical weather prediction in the tropics.