Let's talk about -- by far -- the most important thing first and that is the major, and perhaps catastrophic, flooding forecast for the Carolinas and adjacent areas.
Rain is developing off the coast that will migrate northwest with time.
Heavy rains will also fall through Virginia and into Maryland with the system and flood is likely there but it will be less serious than over the Carolinas.
Wow...this just doesn't get any easier. The models continue spread from the Carolinas to New England to completely out to sea. Here is the National Hurricane Center's current best estimate.