Explains the shifting weather conditions likely to be encountered by a rapidly growing group of pilots who fly hang gliders, paragliders and hot-air balloons. The book describes local winds, sea breezes and winds over slopes and hills, as well as covering in detail cloud formations, thunderstorms, showers, fog and visibility. It also contains brief discussions of how and why gliders fly and gives sufficient information to enable all pilots to assess varying patterns and so avoid putting themselves at risk. Other material includes an alphabetically arranged set of terms and definitions and useful reference tables that appear throughout the book to summarize complex weather phenomena. The author is experienced in aviation weather forecasting.