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Updated: 2:02 AM GMT on August 21, 2014
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Weather Summary

Weather Underground midday recap for Wednesday, August 20, 2014

An area of low pressure moved across the Great Lakes on Wednesday, while a cold front dipped southward over the northern Plains.

A low pressure system moved eastward over the central Great Lakes. This system pushed showers and thunderstorms across the upper Midwest, the Ohio Valley and parts of the Northeast. Flood warnings were issued in eastern Ohio due to heavy rain over the state. New Philadelphia, Ohio, reported a midday total of 2.63 inches of rain. Wheeling, W. Va., reported a midday total of 2.67 inches of rain. An onshore flow from the Gulf of Mexico also triggered isolated thunderstorms across the Tennessee Valley, the Deep South and the Gulf Coast. A tornado warnings was issued in eastern Tennessee, while severe thunderstorm warnings were draped across the Carolinas and Georgia. Kingston, Tenn., reported 1.75 inch sized hail. Hartsville, Tenn., reported 1.00 inch sized hail. High pressure kept conditions mostly clear across the Mid-Atlantic on Wednesday.

Meanwhile, a cold front dipped southward over Montana. Strong thunderstorms developed ahead of this frontal boundary across the northern Plains. Perry, Iowa, reported a midday total of 2.45 inches of rain. Sioux City, Iowa, reported a midday total of 2.11 inches of rain.

Out west, scattered monsoonal thunderstorms popped up across the Four Corners and the Desert Southwest. Flash flood watches were issued across southern California, as Riverside, Calif., reported 1.00 inch sized hail.

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