I started to write a post on how it is ridiculous to think that some HAARP type technology could be used to modify a hurricane, but now I'm not dismissing it!

Hurricanes are powered by the warmth of the ocean they are over. Although cloud seeding could possibly increase storm potential, is inputting energy to affect an existing hurricane a possibility?

The energy required to raise the temperature of the top foot of water in an area of the ocean that is 100 miles in diameter by one degree Fahrenheit is approximately 14.27 trillion joules (or 14.27 terajoules). A single megaton of TNT is equivalent to about 4.184 terajoules (TJ) of energy. So, a megaton TNT explosion releases approximately 4.184 terajoules of energy, and therefore, less than a 4 megaton TNT explosion could raise that patch of ocean by one degree, and to raise it several degrees, which would be required to significantly alter a storm, it would require multiples of that.

Although seemingly beyond current energy production levels, the energy required is in the ballpark of what could be generated through nuclear fission, and who knows, maybe they already have a way to generate such energy through fusion, or some technology currently hidden from the public.