Was just about to post that. It does look like there's a change back to snow trying to occur. Also that's right where the leading edge of the 850/925 temps go back below freezing.
Yup. I know it's only a matter of an hour at most, but this is amazing. Since moving back to Maryland in August 2016, the most snow I've seen is 5" in one event.
For perspective, the average December snowfall at IAD, DCA, and BWI is: 3.5", 3.0", and 2.3" respectively. A lot of folks are going to get their December average snowfall in under 6 hours and there's still two weeks left in the month.