In 1984, the American Meteorological Society, the Cooperative Institute for Mesoscale Meteorological Studies, and the National Oceanic and Atmospheric Administration cosponsored the Intensive Course on Mesoscale Meteorology and Forecasting, held in Boulder, Colorado. This volume is an edited version of the lectures, including complete illustrations and extensive bibliographic references. The 31 chapters consider all aspects of mesoscale meteorology. After an introduction that discusses mesoscale classifications and typical forecast problems, the volume is organized in sections on observing techniques and systems, internally generated circulations, mesoscale convective systems, externally forced circulations, modeling, and short-range forecasting techniques and technology. As a textbook of mesoscale meteorology it will serve both practicing and student meteorologists.