The storm came just a few days after heavy snow and high winds assaulted the region on Friday, killing eight people and knocking out power for 2.7 million.
Some areas are still cleaning up from Friday's storm.
Currently, American computer models forecast the storm will move through the south and bring storms to the Gulf Coast, hitting states stretching from Arkansas to Florida with potential strong winds, hail, and even possible tornadoes, according to ABC News.
Burrillville, Rhode Island, got 15 inches.
How severe will this storm be?
New York City schools remained open.
Interstate 95 is likely to serve as a key dividing line, with areas to its east mainly getting rain and points west due to get as much as 2 feet of snow, Hennen said.
Some communities outside Philadelphia, such as Rosemont and Wrightstown Township, recorded more than 1 foot of snow.
Massachusetts Gov. Charlie Baker urged residents to use caution and stay off the roads during the height of the storm. The website said more than 2,100 flights had been delayed and 2,700 canceled, majority in the Northeast, as of 8 p.m. EST (0100 GMT Thursday).
Connecticut's two major utilities were reporting more than 125,000 power outages Thursday morning.
Utility workers took advantage of milder temperatures and sunshine Tuesday in their scramble to restore power to thousands of customers around the Northeast, as another snowy, blowy nor'easter threatened a new round of outages.
The storm packed gusts of 30 to 50 miles per hour - a far cry from the 90-mph gusts recorded during the weekend storm - but still damaging.
Snow that start falling late Wednesday isn't predicted to stop until Thursday afternoon and evening, according to the National Weather Service.
Workers in a coastal MA town hit particularly hard by last week's nor'easter were working frantically to head off further damage from another severe storm coming this week.
The storm itself doesn't concern Schwindenhammer, but cold air aloft following the storm could produce a coating to an inch.
The snowstorm came with a rare accompaniment of lightning in some parts of Pennsylvania, New Jersey and NY, the weather service said.
The result would be significant snow and wind in parts of the Northeast. Treacherous conditions expected this evening as nor'easter pummels NortheastFour flights from the New York City Area have been cancelled at Mineta-San Jose International. Republican Maine Governor Paul LePage also closed state offices and encouraged residents to stay off roads "unless it is an absolute emergency".