Honestly, nothing unexpected with these storms given history. I lived not far from DCA for 15 years starting in the early 2000s and what you're describing is SOP. And the orientation and track of storms this year has not been good for areas around and below DCA's latitude. It's not just BL temps that have been poor, the upper levels haven't worked out either. We're not doing any better out here in Fairfax.
We had less than DCA here for this one... about 0.1" at best.