A powerful winter storm has already grounded thousands of flights as it threatens to bring heavy snow to New York and Boston while raking the Atlantic coast with blizzard conditions.
New York City is expected to get 6 to 10 inches of snow, while Long Island may see as much as 18 inches, according to the National Weather Service. Boston could see 2 feet of accumulation.
Snow will start in earnest in New York around 7 p.m. Friday and 1 a.m. in Boston, where Mayor Michelle Wu declared a snow emergency and opened 24-hour shelters. Eastern Massachusetts including Cape Cod may end up with 2 feet, the weather service said.