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Weather Underground Forecast for Saturday, November 01, 2014

A cold front will move over the western third of the country on Saturday, while a trough of low pressure will affect the East Coast.

A strong Pacific cold front will move inland over the western third of the country. This frontal boundary will extend from the upper Intermountain West to the Southwest. Steady rain will develop over portions of the Pacific Northwest and California, while high elevation snow showers will impact the Sierra Nevada mountains. Winter storm warnings are in effect for the Sierra Nevadas in anticipation of this storm system. In addition, heavy snow will develop over the northern Rockies, while a mixture of rain and snow can be expected across the Great Basin and the central Rockies. Temperatures will drop 10 to 20 degrees across the western third of the country as this cold front ushers a cooler air mass across the region.

An arctic high pressure system will dominate the Plains and the Mississippi Valley. Temperatures are forecast to range between the 30s and 40s from the northern Plains to the upper Midwest, while temperatures will range between the 50s and 60s from the southern Plains to the Deep South.

Meanwhile, a trough of low pressure will shift southeastward over the central Appalachians and the Mid-Atlantic. The main weather feature associated with this system will be heavy snow showers over the higher elevations of the Appalachians. Heavy snow will also affect northern New England. In addition, a mixture of rain and snow will develop over the Ohio Valley and the eastern Tennessee Valley, while moderate to heavy rain can be expected over the Mid-Atlantic. .

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