It has to do with the direction of the wind. Hurricanes that originate near Cape Verde are pushed toward the Caribbean by east-to-west blowing trade-winds, but slightly north due to subtropical ridge. Once they make their way over to the coast of the United States, they get caught up in the Westerlies, causing them to re-curve and move northeast, thus the common path of Atlantic hurricanes. This map shows the wind directions that explain the movement of the hurricanes.