High and low pressure fronts steer them, and depending on location related to the hurricane, a high pressure front, no matter how weak, can affect a hurricane. A low can act as a target, with the two highs on either side, the gun barrel. A medium high can rip the top off a cat five and destroy it.
It's more than prevailing winds to consider. It's the wind at 17-25K feet that makes or breaks a hurricane season. Seasonal weather depends a lot on sun activity and cycles, and the butterfly effect can change everything on dime. The weather patterns El-N and La-N, are factors in the upper level wind shears but they depend on other factors and so on.
I'd rather predict earthquakes then Hurricanes, but I like Rush's prediction. He said anywhere between 0-25 would be created, and anywhere between 0-25 would hit the US.
Yes, a hurricane needs low pressure to develop but when it passes through a cold ocean it isn’t going to develop very well. That is why we don’t get hurricanes in the upper pacific area it needs to be in warm water.