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Updated: 7:00 AM GMT on August 02, 2014
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Weather Underground Forecast for Saturday, August 02, 2014

A low pressure system will inch across the Eastern Seaboard on Saturday, while a separate area of low pressure will develop over the Four Corners.

A low pressure system will move slowly north northeastward over the Eastern Seaboard on Saturday. This system will bring heavy rain and thunderstorms to a handful of states, especially over the Mid-Atlantic. Flash flooding will be possible over eastern North Carolina and southeast Virginia. Scattered showers and thunderstorms will also develop across the upper Midwest, the Ohio Valley and parts of the Northeast.

An area of low pressure will linger over the Gulf Coast. As warm, humid air collides with this system, showers and thunderstorms will develop over the Gulf Coast and the Deep South. In addition, strong thunderstorms will be possible over Florida on Saturday.

An area of low pressure will interact with monsoonal moisture over the Four Corners to bring a threat of flash flooding to the western tip of Texas, southwest New Mexico and southeast Arizona. Monsoonal moisture will also initiate scattered showers and thunderstorms across the Intermountain West and the Desert Southwest, which could lead to flash flooding in valleys adjacent to sloped terrain. A ridge of high pressure over the eastern Pacific will keep conditions mostly clear across the West Coast on Saturday.

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