This course will review atmospheric scales of motion and the equations of motion applicable to meso-scale motions. Topics include: tropical meso-scale systems; Cold and warm fronts; Energy source for meso-scale disturbances; Difficulties in studies of meso-scale systems and the effects of orography; Economic aspects of meso-scale systems; Rainfall production by meso-scale disturbances. Convection (cumulonimbus) models, Lands and sea breezes and their dynamics will also be reviewed.