From a reader:

Jonah,
An even better argument against global warming and hurricanes can be found in the Aug 2005 edition of National Geographic (no global warming sceptics they). On pp. 78-79 there is a chart showing ocean temperatures from 1944 to present. Between 1944 and 1961 temperatures were elevated and this corresponded to an increase in the frequency of major hurricanes. Between 1961 and 1994, ocean temps dropped significantly with a corresponding decrease in hurricane intensity. Since 1995, temperatures have again increased to where they were in the 1944-61 time period with another increase in hurricane severity.
How this pattern argues for global warming being a factor is beyond me. As the article in National Geographic states: “…many scientists agree that the present hurricane surge is likely part of a 60- to 70-year cycle that changes the strength of ocean currents distributing heat around the globe.”