A stormy stretch continues across the central and southern Plains early this week, with widespread thunderstorms and a risk of flash flooding and severe weather, including hail and isolated tornadoes. As a cold front advances, the rain shifts eastward, soaking the Ohio Valley, Mid-South, and Gulf Coast midweek before spreading into the Southeast and Mid-Atlantic by Friday. The Southwest also turns wetter later this week as tropical moisture feeds daily downpours. Cooler temperatures will follow the front into the central U.S., while the Northeast and West remain seasonably warm.
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A series of Pacific storms is taking aim at the Northwest this week, delivering heavy rain, mountain snow, and gusty winds that could lead to flooding. While the West braces for more moisture, the Central and Western U.S. will bask in record-challenging warmth, with temperatures soaring 15 to 25 degrees above normal. Meanwhile, the chill that's gripped the Eastern U.S. finally begins to ease midweek, ushering in a brief break from the Arctic air. Flash freeze, snow, and wind will hit much of the Canadian Prairies, first with Alberta on Wednesday, then spreading eastward.