A pool of atmospheric moisture will remain parked across the South, with individual disturbances helping to wring out that moisture in the form of heavy rain.  A storm currently crossing the western U.S. will be the last system to interact with the Southern moisture.  That storm is expected to cross the Tennessee Valley on Saturday and reach the middle Atlantic Coast by Sunday.  Before drier weather arrives, additional Southern precipitation should total 2 to 4 inches or more from the central Gulf Coast region into the middle Atlantic States. 

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