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A powerful winter storm swept across the United States from Texas to New York, exposing millions to plunging Arctic temperatures and prompting thousands of flight cancellations and widespread travel disruption. Forecasts showed heavy snow for the New York area with sleet and freezing rain transitions that could complicate road and transit operations. Emergency managers warned of hazardous travel, possible power outages and interruptions to public services as crews braced for shifting precipitation types. Images and video from multiple cities captured snow-covered streets and municipal crews working to clear routes. Utilities reported outages affecting large numbers of customers and officials urged residents to prepare with food, medicine and contingency plans while monitoring evolving forecasts.