Try these links for a starter:
http://oceancurrents.rsmas.miami.edu/atlan...ulf-stream.html
http://oceancurrents.rsmas.miami.edu/atlan...f-stream_2.html
http://seacoos.org/Model%20Output%20and%20Mapping
A few hints and suggestions. You really want a favorable weather forecast for this trip, or be able to break it up in stages when the weather deteriorates. You do not want to be near Cape Hatteras/Cape Fear when there is a storm. I think the Gulf Stream is closest to shore at Cape Hatteras - check the maps in the links above.
It's easy enough to duck into the ICW and motor south past these capes, come out the other side and continue sailing. If a norther is predicted, stay inside - the north winds against the north-flowing Gulf Stream current makes for dangerous conditions. If you have time constraints and can't wait for better weather, stay in the ICW - it's pretty pleasant from Norfolk as far as Georgia. Georgia is a twisty, turny, confusing part of the ICW and it would be much shorter to go offshore than to stay in the ICW if you didn't have to.
Remember that you have another month of hurricane season, and many insurance carriers increase your deductible dramatically for a named storm if you are in the hurricane zone. Read your insurance policy carefully.
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