For those who are wondering, affected airports are:
Allentown, PA (ABE)
Baltimore, MD (BWI)
Harrisburg, PA (MDT)
Philadelphia, PA (PHL)
New York, NY – Kennedy (JFK)
New York, NY – LaGuardia (LGA)
Newark, NJ ( EWR)
Newburgh, NY (SWF)
Scranton, PA (AVP)
Washington-Dulles, D.C. (IAD)
Washington-Reagan, D.C. (DCA)
White Plains, NY (HPN)
Source:
https://www.delta.com/content/www/en...s-weather.html