A Bermuda High will bring increasingly hot, humid conditions to much of the eastern U.S. over the next several days, with temperatures averaging up to 10° above normal from the eastern Plains and Corn Belt to the Atlantic Coast States. Scattered showers are possible in the afternoon heat, though no large organized areas of rain are expected. The high will also prevent a cold front pushing south out of Canada from making much progress into the contiguous U.S., although locally heavy showers and thunderstorms are possible as the front stalls over the Upper Midwest and Great Lakes region. Meanwhile, a pronounced southward dip in the jet stream over the western U.S. will bring chilly conditions (10-20° below normal) from the Pacific Coast into the central Rockies, with locally heavy rain (2-5 inches) possible in northern portions of the Rockies and High Plains as an area of low pressure drifts slowly northeast.
Looking ahead, the 6- to 10-day outlook calls for near- to above-normal temperatures over much of the nation, with the greatest likelihood of hotter-than-normal weather over the Southeast. However, an area of cooler-than-normal weather is anticipated in the Four Corners region. Drier-than-normal conditions are expected along the Gulf Coast and from the Northwest into the central Plains, while above-normal rainfall develops in the Mid-Atlantic States.
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