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Weather Underground Forecast for Monday, April 14, 2014

A strong cold frontal boundary will extend from the southern plains to the central Great Lakes on Monday, while a ridge of high pressure will continue to build over the eastern Pacific.

A strong cold front will stretch from southern Texas to the central Great Lakes. This system will push a cold air mass southward across the central third of the country. As this system interacts with a warm, muggy air mass surging northward from the Gulf of Mexico, numerous showers and thunderstorms will develop across a handful of states. During the first half of the day, stormy weather will push across the Mississippi Valley, the western Gulf Coast, the Tennessee Valley, the upper Midwest and the Ohio Valley. During the afternoon and evening, thunderstorms will shift eastward over portions of the Southeast and the eastern Great Lakes. Severe thunderstorms will be possible across the central Gulf Coast, especially over eastern Louisiana, Mississippi and Alabama.

Meanwhile, a low pressure system is forecast to develop over the central Plains, just east of the central Rockies. Due to a cold air mass across the region, a mixture of rain and snow is expected over Oklahoma, Kansas and Nebraska. Light snow showers will also move across the northern Plains on Monday.

High pressure over the eastern Pacific will keep conditions mostly clear over the western third of the country. Temperatures are forecast to range between the 80s and 90s across the Desert Southwest.

Temperatures in the Lower 48 states Sunday have ranged from a morning low of 7 degrees at Great Falls, Mont. to a high of 93 degrees at Vernon, Texas

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Weather Underground

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