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Associated Press

Posted on April 5, 2014 at 3:34 AM

Updated Saturday, Apr 5 at 3:36 AM

Weather Underground Forecast for Saturday, April 05, 2014

A cold frontal boundary will extend across the Eastern Seaboard on Saturday, while a wave of low pressure will move across the western third of the country.

A cold front will trek eastward across the East Coast on Saturday, stretching from the eastern Gulf Coast to New England. Strong showers and thunderstorms are expected to develop along the southern Plains, the Gulf Coast and the Southeast due to an onshore flow from the Gulf of Mexico. This system will also bring a mixture of rain and snow to the Mid-Atlantic eastern Great Lakes, while heavy snow will be possible across northern New England. High pressure will build across the Ohio Valley, keeping conditions mostly clear from the northern Plains to the central Great Lakes.

Just to the west, a wave of low pressure will shift eastward over the Intermountain West. Scattered snow showers are expected across the Rockies throughout the day, while light rain will be possible over the Four Corners.

Along the West Coast, a cold front will approach the Pacific Northwest. This system will influence an onshore flow from the Pacific, which will usher wet weather across Washington, Oregon and parts of northern California. A mixture of rain and snow will also move over the Cascades. High pressure will build along the coast of southern California, keeping conditions mostly clear across the state on Saturday.

Temperatures in the Lower 48 states Friday have ranged from a morning low of -2 degrees at Yellowstone, Wyo. to a high of 89 degrees at New Bern, N.C.

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