A major winter storm is set to impact the Northeastern United States, triggering blizzard warnings from Maryland to Massachusetts. New York City and New Jersey have already announced travel bans, and airlines have canceled thousands of flights in anticipation of the storm. The National Weather Service forecasts 1 to 2 feet of snow in many areas, accompanied by strong winds that could reduce visibility to a quarter-mile or less, creating potential whiteout conditions. Several states, including New Jersey, Delaware, Rhode Island, Connecticut, Massachusetts, and parts of New York, have declared states of emergency. The storm is expected to bring heavy snow overnight Sunday into Monday, with the most intense conditions expected during this period.