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Weather Underground Forecast for Tuesday, July 29, 2014
A strong low pressure system will move across the Northeast on Tuesday, while monsoonal moisture will surge across the western half of the country.
A strong area of low pressure will move northeastward over the northeastern corner of the country. This system will bring moderate to heavy rain to New England, while the northern Mid-Atlantic will stay mostly clear of precipitation. In addition, a cold front associated with this system will extend across the Eastern Seaboard, the Gulf Coast and the southern Plains. As warm, humid air from the Gulf of Mexico interacts with this frontal boundary, showers and thunderstorms will develop over the southern Mid-Atlantic, parts of the Southeast, the Gulf Coast and the southern Plains. A separate low pressure system will inch across the Great Lakes on Tuesday. This system will bring a chance of rain and thunderstorms to the Great Lakes, the Ohio Valley and the upper Mississippi Valley.
Meanwhile, monsoonal moisture will continue to surge across the Intermountain West, the Great Basin and the Desert Southwest. Widespread thunderstorms will develop across the western half of the country, as flash flooding will be possible over northern Texas, western Oklahoma, southwest Kansas, northeast New Mexico and southeast Colorado. There will also be a chance of flash flooding over the Southwest and the Great Basin, especially across valleys adjacent to sloped terrain. High pressure over the eastern Pacific will keep conditions mostly clear across the West Coast on Tuesday.