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Weather Underground midday recap for Thursday, July 31, 2014
An area of low pressure continued to inch across the southern Plains on Thursday, while a separate low pressure system lingered over the Southeast.
An area of low pressure inched eastward over eastern Texas on Thursday. As this system drew warm, muggy air from the Gulf of Mexico, heavy rain and thunderstorms developed across the southern Plains and the lower Mississippi Valley. A flood warning was issued in southeast Oklahoma due to heavy rain across the region. McAlester, Okla., reported a midday total of 1.78 inches of rain, while Paris, Texas, reported a midday total of 3.61 inches of rain. Just to the east, a low pressure system retrograded westward over the Southeast. This system ushered rain and thunderstorms over several states, as flash flood watches were issued in western South Carolina and western North Carolina. Greenville, S.C., reported a midday total of 2.55 inches of rain. Additionally, isolated thunderstorms developed across the Northeast as a cold front sank southeastward over the Great Lakes.
Out west, monsoonal moisture spread across the Intermountain West, the Great Basin and the Southwest on Thursday. As this moisture collided with the tail end of a cold front, locally heavy rain developed over the southern Rockies. Flash flood watches were issued across New Mexico and the western tip of Texas. High pressure over the eastern Pacific kept conditions mostly clear across the West coast.