美国首都进入紧急状态，1.6亿人收到警报，多地超市被抢空

Core Viewpoint - A significant winter storm is approaching two-thirds of the United States, affecting approximately 160 million people and leading to widespread flight cancellations and emergency declarations across multiple states [1][2]. Group 1: Weather Impact - The storm is expected to span over 3,000 kilometers and could be one of the largest winter storms in years, bringing severe cold and snowfall to various regions [1]. - Snowfall amounts could reach up to 300 millimeters along the route from Oklahoma to Washington D.C., New York City, and Boston, with temperatures in parts of Minnesota and North Dakota potentially dropping to around -46°C [1]. - The National Weather Service warns that the storm may cause more damage than hurricanes, with many areas facing dual weather alerts for winter storms and extreme cold [1]. Group 2: Emergency Responses - At least 14 states have declared a state of emergency due to the storm, including Missouri, Arkansas, Louisiana, Mississippi, Tennessee, and Texas, with Texas Governor declaring disaster status for 134 counties [2]. - The mayor of Washington D.C. has also announced a state of emergency for the capital [2]. Group 3: Public Reaction and Preparedness - Residents in multiple states are rushing to supermarkets to stock up on supplies, leading to shortages of goods [3][6]. - A 74-year-old resident expressed concern about being trapped at home without supplies due to road closures caused by the storm [5]. - Non-profit organizations are receiving urgent requests for help from individuals unable to afford supplies, highlighting the fear of sudden shortages [8]. Group 4: Additional Weather Warnings - The Midwest is experiencing continued impacts from Arctic air, with lake-effect snow expected to bring 6 to 12 inches of snow in the Great Lakes region, and temperatures in some areas dropping to -30°C, with wind chill making it feel like -50°C [11]. - The Chinese Consulate in Chicago has issued warnings for residents to minimize outdoor activities and prepare for potential emergencies related to the extreme cold [11][12].