A severe winter storm has paralyzed parts of the northeastern United States, leaving nearly 400,000 customers without power and placing over 40 million people under blizzard warnings. The storm brought heavy snowfall, with over 30 centimeters recorded in New York, New Jersey, Pennsylvania, Delaware, and Connecticut, and over 38 centimeters in New York's Central Park, the most in over five years for a single storm. Strong winds and wet snow caused trees to fall, damaged power lines, and led to coastal flooding in Massachusetts. Authorities in New York and New Jersey implemented driving bans and closed roads, bridges, and highways due to hazardous conditions. Public life was significantly disrupted, with schools, libraries, and Broadway shows canceled, and major airports like JFK, LaGuardia, and Newark experiencing widespread flight cancellations, with up to 90% of arrivals and departures affected.