Don't look now, but the GFS, and to a lesser extent the Euro, try to bring some mid latitude cyclone up through up next Wednesday into Thursday. GFS has some 6"+ QPF maximums along and east of I-95.
CAMs appear to have the activity swing down through Loudoun County / WV Panhandle between now and 20z. Wouldn't surprise me to see the watch expanded further south a county or two.