This week kicks off with widespread showers and a few storms pushing across the Mid-South to the Mid-Atlantic, bringing the potential for heavy rain and some localized flooding. Temperatures will trend cooler across much of the central and eastern U.S., while the Pacific Northwest faces another round of rain and high-elevation snow. Meanwhile, a dangerous Category 5 Hurricane Melissa is set to cross Jamaica and Cuba, posing serious hazards in the Caribbean.
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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.