This book is an accessible introduction to the practice of operational weather forecasting, and describes the end-to-end process of forecasting, from gathering and processing observational data, through data assimilation and running a numerical model, to the production of forecasts for end users. It discusses the latest advances in the area, including ensemble methods, monthly to seasonal range prediction and use of nowcasting tools such as radar and satellite imagery. In full colour throughout and written by a highly respected team of authors with experience in both academia and practice, this book is an ideal addition to the RMetS Advancing Weather and Climate Science Series.