A stormy weather pattern will affect the East Coast on Friday, while active weather persists in the central Plains.
A stationary front will extend over the Southeast and the Deep South. This frontal boundary will continue to be the focal point for showers and thunderstorms. By the afternoon and evening, stormy weather will wind down over the Deep South.
Meanwhile, a low pressure system will swing across the Great Lakes and southeast Canada. A cold frontal boundary associated with this system will stretch southwestward over the Midwest, the middle Mississippi Valley and the Plains. As this frontal boundary transitions eastward, it will initiate moderate to heavy rain and embedded thunderstorms across New England, the Mid-Atlantic, the Midwest, the middle Mississippi Valley and the central Plains. Prolonged heavy rain will bring threats of flash flooding to northeast Kansas and southeast Nebraska.
Daytime heating will interact with monsoonal moisture over the western third of the country, keeping showers and thunderstorms in the forecast for a large portion of the Intermountain West, the Great Basin and the Southwest. Temperatures will remain 5 to 15 degrees above normal from the West Coast to the upper Intermountain West.
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