I was in Lancaster at Millersville for that event. We got 16" I believe but far eastern Lancaster (Gap, PA I think) got a 20" report as the got nicked a few times by the heavier bands. Ironically, up in PA the GFS came out with an early big storm that had something like 10" - 15" of snow from the turnpike south, backed off at D4, then came back at D2 with the exact same result. Harrisburg only got 5" or 6" out of it. We were really on the edge up here.
Then it melted off in like 72 hours. But it was still a decent event!
The two inch soil temps at Keedysville are down to 35° so that makes sense everything is accumulating more effectively.