East Coast Snowstorms Predicted By Climate Change

I am currently ploughing through Global Climate Change Impacts in the United States, which is a comprehensive 188 page report from June 2009, and produced by a set of government agencies in the US, headed up by the National Oceanic and Atmospheric Administration, looking at the likely impacts of climate change on the U.S.  I'm kind of going through it in a spirit of "How bad is this going to be?" if we make fairly pessimistic assumptions of very high emissions in future, which certainly seem warranted at the moment.  More on that later.

However, I note that climate sceptics have been doing a great deal of crowing lately about how the heavy snowstorms on the East Coast prove global warming must be wrong (eg see here or here).  And so it was interesting to come across this prediction from p38 (written last summer, recall).