It always seems like this would happen growing up in Northern Virginia. We'd get a big snow and then a few days later a sneaky little system that uptrended at the last minute to drop a few inches
The RAP hasn't been perfect but it has easily been the best short range model for this storm so far. Consistent on showing the dry slot in the right place and the band from Charlotte extending up to the VA border.
Models are notorious for under doing moisture associated with robust ULLs. I think the Western ULL piece will over perform West of 85 and the coastal generally underperform