As has been variously pointed out, this is extraordinarily unlikely to work. But, the discussion did get me wondering if it is possible to _cause_ a hurricane (or tropical storm). If you could cause them to happen on a more frequent basis, presumably each one would have a lot less energy. In other words, if the energy built up in the temperature imbalance of warm water on the surface is more regularly dispersed by storms, perhaps you could reduce the chance of a level 4 or 5 hurricane ever forming.

The "only" problem being you're creating hurricanes, of whatever size, and they will eventually hit somewhere, and that's not a neighborly thing to do. :)