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Updated: 5:00 AM GMT on April 20, 2014
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Weather Summary

Weather Underground Forecast for Sunday, April 20, 2014

Low pressure will shift away from the southeastern coast of the country on Sunday, while a cold front will move across the central third of the country.

A low pressure system will trek slowly eastward away from the Southeast on Sunday. This system will continue to push moderate to heavy rain across the Carolinas and the Georgia coast, but conditions should begin to clear up by the late afternoon and evening. High pressure should keep the remainder of the East Coast clear of precipitation.

A separate low pressure system will move eastward over the Four Corners and the southern Plains. Disorganized showers and thunderstorms will be possible across New Mexico and Colorado, as the heaviest rain will likely occur over the southern Rockies. By the afternoon, this low pressure system will tap into a warm, moist air mass from the Gulf of Mexico, which could trigger strong to severe thunderstorms over western Texas. Widespread showers and thunderstorms will also develop across the central Plains and the upper Mississippi Valley as a cold front extends across the region.

Out west, several waves of low pressure will move across the Pacific Northwest and the Intermountain West. Light rain will be possible in western Washington, while snow showers are forecast to push across the Cascades and the northern Rockies. High pressure over the eastern Pacific will keep the remainder of the West Coast clear of wet weather.

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