answer:In the first place, you seem to have a very fundamental misconception of the so-called “butterfly effect”, which assuredly DOES NOT state that “the flap of a butterfly’s winds can change the direction of a tornado”. I suggest that you re-examine the term Butterfly Effect, as it is more about the nuance of “tipping points” and “at what point does something as minor as a butterfly influence something as vast as climate”. But that’s on you. (In any case, that misunderstanding has led to the idea that followed it, so I would definitely recommend that you correct that misconception.) Second, while meteorologists describe how “high pressure areas” tend to create barriers to entry for hurricanes and “push” them in various directions, it is actually the low pressure areas which pull them in the directions they follow. High pressure areas move masses of air in the general direction of low pressure areas (with directional / rotational momentum change provided by the Coriolis Effect). In this sense, high pressure and low pressure air masses are only high and low with respect to each other. I do not believe that humanity currently has the physical capability to create a machine – or any network of machines – which could generate an “artificial high pressure area” of the continental size necessary to move a hurricane. With this in mind, there is no combination of air moving fans that could create an artificial high pressure area to blow a hurricane away from a low pressure area that tends to direct its movement. (In addition to which, if you wanted ship-mounted fans to have an effect, they would have to be anchored – and strongly anchored at that – practically right on the shoreline. This would tend to kill massive amounts of sailors manning those ships as the storm destroyed them and moved onshore anyway, if it is wont to do so.) What is wanted, if it really is wanted, to move an actual, formed and organized hurricane, is a mid-sea low pressure area that will tend to attract it. One of the best ways to create a low pressure area, strange as it might seem, would be to heat the air, which would tend to make it less dense, and to rise… and generally to create a new storm. (Massive low pressure areas are, in fact, what we experience as “storms” and are far, far more powerful than hurricanes, but spread over continental areas, not just a few hundred square miles.) One of the best ways to heat the air to this extent, if it’s going to be done artificially, would be… a massive array of thermonuclear explosions. That might work, if you think you could sell it. The trick is, if it can be managed, to prevent the hurricane from forming and organizing “as a hurricane” in the first place. Maybe we should just kill all of the butterflies…