Why is it considered good practice to obtain current weather information to the west and northwest before a cross-country flight?

It is good practice to obtain current weather information to the west and northwest before a cross-country flight primarily because weather patterns in Canada generally move from west to east. By gathering this information, a pilot can anticipate changes in weather conditions that could affect their planned route. Monitoring the weather in these directions allows for proactive planning and decision-making, ensuring that the pilot is prepared for any incoming weather systems.

Specifically, obtaining this weather information helps the pilot assess potential risks such as thunderstorms, low visibility, and other adverse conditions that could develop along the flight path. Understanding the anticipated weather changes is essential for maintaining safety and complying with visual flight rules, which require pilots to have sufficient visibility and a clear understanding of existing weather conditions.