  Based on realistic estimates of geophysical conditions it is demonstrated
that by practical means; (1) the intensity of a hurricane can be diminished
before making landfall; (2) and other circumstances, a potential hurricane
might be quenched before achieving critical strength. Under the first strategy,
cold deep ocean water cools the hurricane track to weaken it. Analyses are
facilitated by derivation of a novel exact solution that models a tropical
depression, a mesoscale eddy, and the eye of a hurricane. Under the second
strategy, it is shown. the threat of a tropical depression can be diminished,
in a timely manner. Estimates of the power needed to perform timely ocean
mixing show that this might be accomplished by high-performance submarines, and
an exceptional coefficient of performance, O(10^4). The destructive power of a
hurricane is functionally related to its maximal wind speed, Vm. It is shown
that a 20 percent reduction in maximal wind speed produces a 50 percent
reduction in destructive costs. Complementary deliberations show the potential
for producing rainfall in relief of drought. Shown also is the opportunity to
significantly modify vessel architecture to maximize the desired goals. It is
the contention of this paper that a practical framework exists to pursue means
by which to reduce the tragedy and devastation caused by hurricanes.
