The Member States of the Caribbean Community are island states or continental countries with highly populated coastal plains lying below sea level. The Member States are subject to repeated flooding, some on an annual basis, with massive resultant loss in life and significant economic losses. This project proposes to develop a robust, reproducible, and transparent approach to flood forecasting that produces outputs from a quasi-distributed hydrological model designed to simulate the complete hydrologic processes of dendritic watershed system that is forced with numerical precipitation prediction data. The approach overcomes some of the deficiencies encountered in more traditional approaches to flood forecasting in small watershed where there is a short time lag between precipitation events and the onset of flood.