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Cold air will continue to spread eastward, reaching the Plains late in the weekend and early next week. Warmth will continue, however, across the eastern one-third of the country. Widespread precipitation will precede and accompany the temperature transition, with weekend rain and snow showers possible as far south as southern California and the Four Corners region. Meanwhile, a significant weekend snowstorm will unfold across northern sections of the Rockies and High Plains.

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