"The American (GFS) model shows a crushing snowstorm for areas just north and west of Washington and Baltimore. Even Washington and Baltimore would see significant snow, but some of it would melt due to temperatures slightly above freezing."
"In addition, it’s worth noting that the European modeling system has 50 alternative simulations in addition to the primary one. While the primary one shows a miss, almost half of the other simulations show a significant storm for our region. About a third show significant snowfall."
https://www.washingtonpost.com/news/capital-weather-gang/wp/2018/03/07/there-is-potential-for-a-significant-mid-atlantic-storm-sunday-and-monday/?utm_term=.1a0b6cc83d4a