In early 2000, the Meteorological Service of Canada was contracted by NAV CANADA to study and compile local aviation weather hazards across all of Canada, from Atlantic to Pacific to Arctic Oceans. When completed, the project will have produced six aviation weather manuals, corresponding to the Canadian graphic area forecast regions. During the research for these manuals, weather forecasters conducted interviews with a broad cross-section of the aviation community to glean information on local aviation weather. Although designed for pilots and aviation briefers, meteorologists can take advantage of the information as a learning tool. Through closer scrutiny of these accumulated effects, the underlying meteorology can often be discovered. These discoveries can be used to explain other phenomena or rules of thumb and are essential in the continued efforts to improve aviation weather forecasts.