While Hurricane Earl is not likely to make a direct hit on the Chesapeake Bay, it still has potential to cause some rough weather, and if it doesn't make that right turn when expected, it could be even worse. Not to mention Fiona hot on his tail. It would be wise to at least start thinking about anything that you might need to do in preparation. I'm NOT encouraging a run on Graul's for bread, milk and TP, but if you have a boat in the water, just consider what might need to be done if the wind starts blowing and the water gets high.
I found this article online and recommend checking it out if you have a boat.