The clouds in the photo are the extreme western edge of Hurricane Arthur, far out over the North Atlantic spinning its way towards the Canadian Maritime provinces.
Quite a rare visitor to BWI!
FedEx 753, daily from Memphis.
CommutAir 9875, a positioning flight from nearby Washington-Dulles Int'l, gives a friendly wave from the Captain.
Flight 457 from Chicago-Midway.
Flight 244 from Fort Lauderdale.