Fronts move across the United States from west to east, and clouds in the atmosphere often give us clues that indicate a front is heading our way. If you pay attention to them you can make an educated guess as to how the weather will progress during the day or even over the next few days. Fronts may produce an improvement in the weather or a storm system. Cold front tend to move into and across the US from the cold NorthWest and warm fronts tend to move NorthEast from the warm Gulf of Mexico. Interesting and active weather usually results when a drier cold front meets a humid warm front.
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3