Frontal systems are boundaries that separate two different air masses, typically characterized by varying temperatures and humidity levels. These systems can be classified into cold fronts, warm fronts, stationary fronts, and occluded fronts, each influencing weather patterns in distinct ways. For example, a cold front occurs when a colder air mass pushes into a warmer air mass, often leading to thunderstorms and a drop in temperature. As frontal systems move, they can cause changes in wind direction, precipitation, and temperature. Meteorologists use tools like radar and satellite imagery to track these systems, helping to predict weather events. Understanding frontal systems is essential for forecasting and preparing for various weather conditions.