Midweek brings flash flooding and severe storm risks from the Mid-Atlantic to Texas, followed by building heat across the central and eastern U.S. heading into the holiday weekend. Florida and the Upper Midwest also face stormy, soggy days ahead. Air quality is an issue throughout central Canada related to the wildfires, plus heat warnings are issued for parts of Alberta this week.
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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.