THEMES Extreme Weather and Climate -- with emphasis on linkages across the weather-climate interface. Simulation of Mesoscale Phenomena -- with emphasis on contemporary models (e.g., leading Chinese model and WRF) and data assimilation and ensemble forecasting systems. Severe Weather Processes and Predictability -- with emphasis on high impact convective and mesoscale systems Climate Predictability at Seasonal-to-Interannual Timescales -- with emphasis on dynamical and statistical downscaling. Long-Term (Decadal and Beyond) Climate Simulation and Projection -- with emphasis on regional and continental scales. The Symposium is the second in a series. The First Symposium was held at The University of Oklahoma in February 2007.