Weak low pressure will remain over the New York/New Jersey area through Thursday. A low pressure area will then develop off the Mid Atlantic coast and will bring an extreme change back to wintry conditions for the later part of the week. Snow will develop Thursday night into Friday.Much colder conditions will exist as Arctic High Pressure builds from Canada. The chart below shows the 72 hour projected snow totals.
Another low will form well south of the region on Sunday. It is possible that another low pressure will form and possibly affect the region again around the middle of next week.
New York / New Jersey Forecast and Radar:
http://www.joesdiscoweathercentral.com/New_York_and_Vicinity_Forecast.html