Global Ensemble Temperature Anomalies (departure from average) through March 22nd:

Latest GFS Ensemble shows Nor’easter developing off the Mid-Atlantic coastline on Tuesday (how close it tracks the coast will determine how much snow if any falls Monday night into Tuesday):

18z GFS (Operational, these update every 6 hours) currently shows a powerful Nor’easter possibly impacting the the DC to Boston corridor (track is subject to change):

Latest GFS Ensembles (image courtesy WxBell) for DC Area Snowfall Accumulation through Wednesday 7 AM (again, I’m just providing you the current ‘tea leaves’ to chew and stew on, this potential event is still 5 days away):