At 1505 eastern time, a Bombardier Canadair CL600-2B19 experienced smoke in the cockpit shortly after takeoff from Charleston International Airport. The flight diverted to Raleigh Durham International Airport, in Raleigh, North Carolina, and landed without further incident. No one was injured. The crew said they pushed back from the gate in heavy rain and departed. They were cruising at 27,000 feet when they heard a thump. The autopilot disengaged, and all six flight and navigational screens went blank. Power came back on almost immediately and all six screens illuminated. Examination of the avionics and electronics bay found black soot on the wire bundles and relays.