A sharp weather contrast is setting up across the country this week. Critical fire weather conditions are developing across parts of the central and southern High Plains, while repeated Pacific storms continue to bring heavy mountain snow to the West. Meanwhile, a strengthening system will spread snow and mixed precipitation from the Northern Plains to New England, and a potential coastal storm this weekend could bring wind and rain — or snow — to parts of the Mid-Atlantic and Northeast. Temperatures will swing dramatically as much colder air settles into the East by early next week.
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An active and impactful weather pattern is setting up across much of North America through next week. Multiple rounds of severe thunderstorms are expected from the eastern Canadian Prairies, U.S. Plains into the Mississippi Valley, bringing the risk of damaging winds, large hail, and tornadoes. Heavy rainfall may lead to localized flooding from the Northern Plains to the Southeast, while wildfire concerns continue across the Four Corners region. At the same time, summer heat is building, with the East experiencing its hottest temperatures of the season late this week before above-average warmth expands westward during the weekend.