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The climate models used to construct predictions for anthropogenic contributions to climate change are completely different to those used for predicting the activity of hurricane seasons. Not least because the activity of a given hurricane season is governed by many factors, or which only one is 'global warming'.
It's also worth noting that the guy at NOAA who actually does the hurricane predictions is a certain William Gray, who is a vehement AGW skeptic.
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Completely wrong about Gray in that he doesn't work for NOAA and is often critical of them.
Wrong about NOAA as well and their climate models. From one of the links I posted:
Wind shear is one of the dominant controls of hurricane activity, and the models project substantial increases in the Atlantic," said Gabriel Vecchi, lead author of the paper and a NOAA research oceanographer at GFDL. "Based on historical relationships, the impact of the projected shear change could be comparable in magnitude as that of the warming oceans—with the opposite effect."
Examining possible impacts of anthropogenic greenhouse warming on hurricane activity, the researchers used climate modeling to assess large-scale environmental factors tied to hurricane formation and intensity. They focused on projected changes in vertical wind shear over the tropical Atlantic and how those changes tie to the Pacific Walker circulation. The Walker circulation is a vast loop of winds that influences climate across much of the globe, and varies during El Niño and La Niña oscillations. (Click NOAA image for larger view of the Pacific Walker Circulation. Click here for high resolution version. Please credit “NOAA.”)
Here's another linky that discusses NOAA climate models and the effects on the climate of quadrupling CO2 emissions:
Climate Impact of Quadrupling CO2
An overview of GFDL climate model results is presented from a series of experiments examining the possible climate impact of a quadrupling of atmospheric CO2. Much of the recent anthropogenic climate change research has been focused on the issues of climate change detection and projections of climate change over the next century. On the other hand, analyses of future emission scenarios in the IPCC and elsewhere indicate that on a multi-century time scale, CO2 levels are likely to rise well beyond a doubling unless very substantial emission reductions occur. Therefore, longer term aspects of climate change, based on higher-than-doubling CO2 levels, are becoming an increasing part of the debate. In this report, the possible climate impacts of a CO2 quadrupling are examined.
Thanks for playing though.