18z NAM soundings at KIAD for 00z MON and 03z MON looked pretty good to me... decent SBCAPE and shear... would suggest that the WF or west to east front is somewhere in C MD
Sim radar didnt look too bad on either of the 18z NAMs or RGEM... 18z long range HRRR did suggest though that the front is in N VA as it has best storms just south of me toward EZF