Igor chilled much of the Atlantic, making it a lot tougher for anything major to follow him this season.
http://weather.unisys.com/surface/sst_anom.html
http://en.wikipedia.org/wiki/File:Igor_2010_track.png
The remaining band of warm water stretches from Venezuela to Nicaragua.
http://en.wikipedia.org/wiki/2010_Atlantic_hurricane_season
The numbers vary but most agree that the minimum temperature for development is 80 degrees F or 27 C.
http://www.tbd.com/blogs/weather/2010/08/ocean-heat-drives-hurricanes-what-water-temperature-is-needed–1051.html
From this map anything north of 30 will not sustain one except along east coast of US. Storms going parallel to that latitude and south from there could still form.
http://www.sailwx.info/wxobs/watertemp.phtml
Note the storm over Cuba. Last night they showed it coming inland, but now show it going more NE.
http://www.nhc.noaa.gov/refresh/graphics_at1+shtml/100013.shtml?3-daynl?large#contents