The weather front is the point when two masses of air with different densities, temperatures, and humidity collide. There are four types of weather fronts: cold fronts (cold air mass, thunderstorms, and rain), warm fronts (warm air mass, lower density than the cold front), occluded fronts (low pressure areas formed when a cold front passes over a warm front), and stationary fronts (the boundary between two air masses that are not strong enough to be both cold and warm) (clouds, precipitation).
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