Weather Aid is a term used to describe the use of RADAR technology to help predict and monitor weather patterns. RADAR stands for Radio Detection and Ranging and is a tool used to detect objects and measure distances by sending out radio waves and measuring the time it takes for them to bounce back. RADAR is used in many different fields, including meteorology, where it is used to detect and track storms, measure wind speed, and even measure precipitation. RADAR is an invaluable tool for weather forecasting and can be used to provide early warnings of severe weather events.