This week features an active weather pattern across much of the U.S. as a strong cold front stirs up storms from the Mid-Atlantic to New England, while daily thunderstorms also affect the Plains, Midwest, and Deep South. Meanwhile, a dangerous heat wave continues across the Southwest, with major heat risks extending into the High Plains and East Coast. Heat alerts cover much of central Canada and wilfire smoke is creating a number of air quality issues across Canada, also.
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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.