A storm system currently crossing the northern Rockies will reach the upper Mississippi Valley on Wednesday morning before turning northeastward. Starting late Tuesday and continuing through Wednesday, wind-driven snow may result in blizzard conditions in parts of the north-central U.S., particularly in the Red River Valley and environs. High winds will also rake the northern and central High Plains.

On Christmas Eve, a secondary low-pressure system forming along the storm system’s trailing cold front will enhance rainfall in the eastern U.S.

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