
Dry Line
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High Quality Content by WIKIPEDIA articles! A dry line is an important factor in severe weather frequency in the Great Plains of North America. It typically lies north-south across the High Plains states and stretching into the Canadian Prairies during the spring and early summer, where it separates moist air from the Gulf of Mexico and dry desert air from the south-western states. The dry line is also sometimes important for severe convective storms in other smaller regions of the world, particularly Bangladesh and adjacent eastern India, and south-eastern South America. A dry line is a bound...
High Quality Content by WIKIPEDIA articles! A dry line is an important factor in severe weather frequency in the Great Plains of North America. It typically lies north-south across the High Plains states and stretching into the Canadian Prairies during the spring and early summer, where it separates moist air from the Gulf of Mexico and dry desert air from the south-western states. The dry line is also sometimes important for severe convective storms in other smaller regions of the world, particularly Bangladesh and adjacent eastern India, and south-eastern South America. A dry line is a boundary that separates a warm moist air mass from a warm dry air mass. Near the surface, warm moist air is denser than dry air of greater temperature, and thus the warm moist air wedges under the drier air like a cold front. At higher altitudes, the warm moist air is less dense than the cooler, drier air and the boundary slope reverses. In the vicinity of the reversal aloft, severe weather is possible, especially when a triple point is formed with a cold front.