How about 7" on that day...1984 seems like yesterday!
https://www.wbaltv.com/article/1984-report-colts-leave-baltimore-overnight/6802490
I remember that storm. Strong Noreaster. Frequent gusts of wind to 50-55mph on the evening of the 27th. Official forecast was rain changing to snow before ending, little or no accumulation. Here in Harford we got 7" maybe more. And it was heavy AF. Broke two shovels at the bottom of the lane with lots of water running beneath.
Also woke up to the lowest recorded barometric pressure of 28.87". Well until 03/13/93 (28.53") March can be amazing here.
And fickle too! 3/1/80 we got 7" and exactly a week later it was close to 80 and we had severe that evening.
What I do NOT enjoy is cold April fog/drizzle cold air damming nonsense. Typically ends suddenly with summer DPs in the 70s. 1989 had a lot of that.