The U.S. weather pattern is locked into a classic early fall transition: a nor’easter-like coastal storm is spinning up off the Southeast, set to lash the Mid-Atlantic coast midweek with rain, wind, and rough surf. Meanwhile, persistent heat grips the Mississippi Valley and Northeast, and storm chances reload late week across the Central and Northern Plains. A soggy setup also lingers over California, South Florida, and parts of the Southwest through the weekend.
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A highly active weather pattern is setting up across the southern and central United States this week. The biggest concern is a prolonged flooding threat from South Texas through Louisiana and into portions of the Lower Mississippi Valley, where repeated rounds of tropical downpours could produce significant flash flooding. Meanwhile, a powerful storm system will bring the risk of severe thunderstorms from the Midwest into the Great Lakes and Ohio Valley on Wednesday, with damaging winds, large hail, and a few tornadoes possible. While heat eases somewhat across the West, temperatures will remain above average in parts of the Pacific Northwest and California before additional cooling arrives later this week.