This book focuses on the dynamics of clouds and of precipitating mesoscale meteorological systems. Clouds and precipitating mesoscale systems represent some of the most important and scientifically exciting weather systems in the world. These are the systems that produce torrential rains, severe winds including downburst and tornadoes, hail, thunder and lightning, and major snowstorms. Forecasting such storms represents a major challenge because they are too small to be adequately resolved by conventional observing networks and numerical prediction models.